BMW Coolant Expansion Tanks

Coolant Expansion Tank - E46 (non-M), X3, X5 3.0

T#:338020

Part#: 17117573781

In Stock at Vendor

Sale - Save 2% $ 140.99

This product was last offered at the strikethrough price on
04-01-2026

Starting at $ 137.98 USD

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Sale - Save 2%

$ 140.99

This product was last offered at the strikethrough price on
04-01-2026

Starting at $ 137.98 USD

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This coolant reservoir is for the non-M E46 3-series models from 1999-2006 (M3 takes a different expansion tank). We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on. This is the most recent expansion tank design from Hella-Behr, the OEM supplier to BMW. It replaces the original BMW part number 17137787039.

Other items to consider replacing at the same time are the radiator cap, coolant level sensor, lower radiator hose, coolant temp sensor in the lower hose, and the hose clamps. If your car has an automatic transmission you should also replace the oil cooler thermostat in the radiator frame, which is a common source for leaks.

This coolant expansion tank fits:

1999-2006 E46 3 series - 323i, 323Ci, 325i, 325Ci, 325xi, 328i, 328Ci, 330i, 330Ci & 330xi (**no M)
2004-2008 X3 SAV - X3 2.5, X3 3.0, X3 3.0si
2000-2005 X5 SAV - X5 3.0

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Coolant Expansion Tank - E36/E39/Z3 6 cylinder 1992-1998

T#:338018

Part#: 17111723520

In Stock at Vendor

$ 97.99

This product was last offered at the strikethrough price on
05-03-2026

Starting at $ 77.22 USD

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Starting at $ 77.22 USD

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This high quality BEHR brand expansion tank is used on M50, M52, S50 and S52 engines, and is a common failure item on all E36 3 series with 6 cylinder engines (325/328/323 and M3) 1992-1999, Z3 with 2.8 liter, MZ3 Roadster/Coupe (S52), and E39 528i from 1997-1998. BEHR was the original equipment supplier to BMW, so you know the BEHR made expansion tank will be the highest quality available. Be leary of competitors selling this part for less -- is it a BEHR? Probably not. We only carry the BEHR brand expansion tank as it is the only one we use in our own BMWs.

If you are overhauling your coolant system, now is the time to consider preventative replacing this expansion tank. These are known to go bad, causing a leak which can leave you stranded. We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.

Need a new coolant level sensor too? If your coolant level sender is bad, your on board computer will constantly display a "low coolant" message (unless your coolant is actually low...). If you're replacing your expansion tank, now is a great time to replace this failure prone sensor. If you want a new coolant level sensor, simply choose from the option below. Because there are different sensors for different year/model BMWs, please be as specific as possible when you give us your car info during checkout (model, year, production date). Thanks!

This item fits the following BMWs:
1992-1998 E36 BMW 323ic 325i 325is 325ic 328i 328is 328ic M3
1997-1998 E39 BMW 528i
1997-1998 Z3 BMW Z3 2.8
1998-2000 Z3 BMW M Roadster M Coupe (S52)

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OEM Coolant Expansion Tanks Kit - F22/23 F3X B48 B58

T#:27605427

Part#: 17138677649TKT

Ships in 1 Business Day

Sale - Save 4% $ 208.99

This product was last offered at the strikethrough price on
05-03-2026

$ 200.88 USD

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$ 208.99

This product was last offered at the strikethrough price on
05-03-2026

$ 200.88 USD

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Genuine BMW expansion tanks have a bad habit of failing after a few years. This has primarily been caused by the plastic construction of the expansion tanks. After enough heat cycles, the plastic becomes brittle and can crack, causing coolant to leak out and air to enter the coolant system. If a failing expansion tank is not addressed soon enough, the coolant loss can lead to an overheating engine. This kit includes two brand new high quality expansion tanks and caps

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Expansion Tank Replacement Kit

T#:15744017

Part#: N524ECSTNKKT-KT

In Stock

Sale - Save 40% $ 166.99

This product was last offered at the strikethrough price on
04-03-2026

$ 100.95 USD

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$ 100.95 USD

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The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes on a regular basis, it can often crack or break. You want to keep all the coolant in your vehicle in the cooling system. If your tank has experienced damage such as cracking, nipples breaking off, or mounting point damage, you will need to replace it. The kit includes: Expansion tank with level sensor URO expansion tank cap Genuine BMW expansion tank grommet Genuine BMW mounting bolts

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ECS Cooling System Refresh Kit - Level 2

T#:15677514

Part#: 11281706545-KT

In Stock

Sale - Save 4% $ 474.99

This product was last offered at the strikethrough price on
05-03-2026

$ 457.71 USD

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$ 474.99

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Stop the problems before they arise. If your BMW has 80,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. Avoid water pump failure, cracked thermostat housings, and expansion tank leaks, which all lead to overheating and subsequent damage. This kit was put together by Turner for a complete cooling system service. GEBA water pump with metal impeller ECS aluminum water pump pulley Fan switch Thermostat and thermostat housing Sealing gaskets Expansion tank with level sensor, clamp and cap 1 Gallon Coolant Upper & lower radiator hoses Accessory drive belts Radiator drain plug

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ECS Cooling System Refresh Kit - Level 1

T#:15677493

Part#: 11517527910-KT

In Stock

Sale - Save 5% $ 337.99

This product was last offered at the strikethrough price on
02-27-2026

$ 321.90 USD

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Sale - Save 5%

$ 337.99

This product was last offered at the strikethrough price on
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$ 321.90 USD

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Stop the problems before they arise. If you vehicle has 80,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. To keep everything in top order, continue to replace these components at 80,000 mile intervals. Water pump failure, cracked plastic housings, and expansion tank leaks will not be a concern once all these problem parts are replaced. This kit was put together by Turner including the basic parts that need replaced. Water pump with metal impeller Fan switch Thermostat and thermostat housing Sealing gaskets Expansion tank with level sensor, clamp and cap 1 Gallon Coolant Upper & lower radiator hoses

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Expansion Tank Replacement Kit - E60 M5,E63 M6

T#:584232

Part#: 17112283345KT

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$ 250.99 USD

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The expansion tank in your BMW is a vital component of the cooling system, and because of the constant abuse from heat and temperature changes, it often fails. This kit contains all of the basic items needed for a tank replacement.

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ECS Cooling System Refresh Kit - Level 2

T#:15710821

Part#: 17137607482-KT

In Stock

Sale - Save 6% $ 781.99

This product was last offered at the strikethrough price on
04-06-2026

$ 734.48 USD

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$ 781.99

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$ 734.48 USD

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As your mileage increases, so does wear and tear on your engine's cooling components. Cooling system components live a rough life, going through extreme temperature changes and being exposed to the elements. A cooling system failure can, and probably will leave you stranded. Included in this kit Water pump with new bolts Thermostat & housing Expansion tank with level sensor Expansion tank cap 1 Gallon of OEM Coolant Waterpump & thermostat hoses Upper and lower radiator hoses Accessory belt

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Cooling System Refresh Kit - Level 2

T#:15744066

Part#: 11287837898-KT

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Sale - Save 9% $ 808.99

This product was last offered at the strikethrough price on
07-15-2026

$ 738.48 USD

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$ 808.99

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BMW has been designing notoriously failure-prone cooling systems since the late 1980s. The coolant capacity in most BMW engines is not sufficient to accommodate any driving or overheating near red zone temperatures. After the gauge reaches this critical area, it is common for thousands of dollars in damage to occur. Stop the problems before they arise. If your vehicle has 80,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. To keep everything in top order, continue to replace these components at 80,000 mile intervals. Water pump failure, cracked housings, and expansion tank leaks will not be a concern once all these problem parts are replaced. Saleri water pump with metal impeller ECS aluminum water pump pulley Fan switch Vaico Q+ thermostat - made in Germany! Sealing gaskets Expansion tank with level sensor, clamp and cap 1 Gallon Coolant Upper & lower radiator hoses Accessory drive belts Radiator drain plug

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Cooling System Refresh Kit - Level 2 - E9x, E82, E88, Z4

T#:42099868

Part#: 11537558523TKT

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Sale - Save 19% $ 829.99

This product was last offered at the strikethrough price on
05-03-2026

$ 671.10 USD

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$ 829.99

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$ 671.10 USD

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Keep your BMW running at the proper temperature and avoid costly engine repairs with the Cooling System Refresh Kit, the complete maintenance solution trusted by enthusiasts and professionals alike.

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Cooling System Refresh Kit - Level 2

T#:15677500

Part#: 82141467704-KT

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Sale - Save 19% $ 832.99

This product was last offered at the strikethrough price on
05-03-2026

$ 672.89 USD

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As your mileage increases, so does wear and tear on your engine's cooling components. Cooling system components live a rough life, going through extreme temperature changes and being exposed to the elements. A cooling system failure can, and probably will leave you stranded. For automatic transmission (or DCT) vehicles only This kit includes: Thermostat with mounting hardware 1 gallon of BMW coolant Water pump with mounting hardware Primary cooling system hoses and radiator hose gasket, and bleeder screw Expansion tank with cap Accessory belt

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OE BMW Coolant Expansion Tank Cap - E90 E92 F30 F32 F10 F12 F06 ...

T#:19454

Part#: 17117639020

In Stock

21% off MSRP $ 34.96

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 27.70 USD

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21% off MSRP

$ 34.96

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 27.70 USD

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This radiator expansion tank cap is used most BMW's from 2006+. It is a common failure item. When this item fails, it cannot hold pressure which results in your BMW overheating. If you are overhauling your coolant system, now is the time to consider preventative replacing this cap. It is also referred to as the coolant reservoir cap.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
2008-2013 E82 BMW 128i 135i 135is 1M Coupe
2014+ F22 BMW 228i 228i xDrive M235i M235i xDrive
2012+ F30 BMW 320i 320i xDrive 328d 328d xDrive 328i 328i xDrive 335i 335i xDrive - Sedan
2013+ F31 BMW 328i xDrive 328d xDrive - Wagon
2014+ F34 BMW 328i xDrive GT, 335i xDrive GT - Gran Tourismo
2013+ F32 BMW 428i 428i xDrive 435i 435i xDrive - Coupe
2013+ F33 BMW 428i Convertible 428i xDrive Convertible 435i Convertible 435i xDrive Convertible- Convertible
2014+ F36 BMW 428i Gran Coupe 428i xDrive Gran Coupe 435i Gran Coupe 435i xDrive Gran Coupe
2014+ F07 BMW 535i GT, 535i xDrive GT
2012+ F10 BMW 528i 528i xDrive 535i 535i xDrive 535d 535d xDrive
2011+ F10 BMW 528i 528i xDrive 535i 535i xDrive 535d 535d xDrive
2012+ F12 BMW 640i 640i xDrive 650i 650i xDrive
2013+ F06 BMW 640i Gran Coupe 640i xDrive Gran Coupe 650i Gran Coupe 650i xDrive Gran Coupe
2009+ F01 BMW 740i 740li 740li xDrive 740ld xDrive 750i 750li 750i xDrive 750li xDrive 760li
2013+ E84 BMW X1 sDrive28i X1 xDrive28i X1 xDrive35i
2011+ F25 BMW X3 xDrive28i X3 xDrive28d X3 xDrive35i
2015+ F26 BMW X4 xDrive28i X4 xDrive35i
2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive35d X5 xDrive35i X5 xDrive48i X5 xDrive50i X5M
2014+ F15 BMW X5 sDrive35i X5 xDrive35d X5 xDrive35i X5 xDrive50i
2008-2014 E71 BMW X6 xDrive35i X6 xDrive50i X6M

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Genuine BMW Expansion Tank - F80 M3,F82 M4,F83

T#:198696

Part#: 17132284600

In Stock

9% off MSRP $ 318.56

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 290.92 USD

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9% off MSRP

$ 318.56

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 290.92 USD

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Replace your damaged expansion tank to prevent coolant loss or potential overheating issues.

Coolant Expansion Tank Cap - E9x M3, E60 E63 F01 E70 E71

T#:194502

Part#: 17117639021

In Stock

22% off MSRP $ 34.96

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 27.29 USD

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22% off MSRP

$ 34.96

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 27.29 USD

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This radiator expansion tank cap is used most BMW's from 2006+. It is a common failure item. When this item fails, it cannot hold pressure which results in your BMW overheating. If you are overhauling your coolant system, now is the time to consider preventative replacing this cap. It is also referred to as the coolant reservoir cap.

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Genuine BMW Expansion Tank Cap - E3X / E53 / Z4

T#:207187

Part#: 17117639022

In Stock

21% off MSRP $ 34.96

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 27.67 USD

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21% off MSRP

$ 34.96

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 27.67 USD

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Genuine BMW Radiator Cap - 2,0Bar
This item fits the following BMW Chassis:
E36 M3,E39 M5,E46 M3,E85 Z4M,E53 48IS,E36,E38,E39,E46,E53 X5,E65,E83 X3,E85 Z4,E86 Z4,F06,F10,F12,F13

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Precision Raceworks Coolant Tank & Power Steering Bracket W/ Harness ...

T#:38229115

Part#: 622-0079

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$ 69.99 USD

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$ 69.99 USD

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The E9X / E8X Coolant Tank & Power Steering Bracket w/ Harness is all of the hardware necessary to relocate your power steering pump and install a factory coolant tank on the driver's side of your vehicle. These are the same high-quality components that are included with our E9X/ E8X relocated inlet kits.

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Genuine BMW Engine Coolant Expansion Tank Cap - 17135A1BD89

T#:29699315

Part#: 17135A1BD89

In Stock

6% off MSRP $ 34.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 32.99 USD

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6% off MSRP

$ 34.99

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$ 32.99 USD

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Genuine BMW Cover Lid
This item fits the following BMW Chassis:
E70 X5M,E71 X6M,E70 X5,E71 X6,F01,F02,F06,F10,F12,F13,F15,F16,F30,F80 M3,F82 M4,F83,i3i12

Genuine BMW Coolant Expansion Tank - E53 X5, E46 M52/54, E83 X3 ...

T#:360752

Part#: 17117573781

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$ 173.21 USD

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$ 173.21 USD

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We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.

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Genuine BMW Coolant Expansion Tank - E46 M3

T#:13185

Part#: 17112283344

Ships in 1-3 days

7% off MSRP $ 215.23

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 199.98 USD

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7% off MSRP

$ 215.23

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 199.98 USD

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This radiator coolant reservoir/expansion tank for E46 M3 is a common failure item as the plastic weakens over time and stress crack will lead to coolant leaks. If your car has over 80k miles and hasn't had one of these replaced, we highly recommend it during your next major service. We have found that the aftermarket coolant reservoirs fail easier than the original BMW piece so we only offer the BMW type on this part.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
2001-2006 E46 BMW M3

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Genuine BMW Radiator Cap 1,4Bar - 17112227683 - E30,E30 M3, E28 M5 ...

T#:22513

Part#: 17112227683

In Stock

4% off MSRP $ 27.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 26.99 USD

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4% off MSRP

$ 27.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 26.99 USD

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Genuine BMW Radiator Cap - 1,4Bar
This item fits the following BMW Chassis:
E30 M3,E30

Fits BMW Engines including:
S14,S38

Genuine BMW Expansion Tank - E90,E92,E93 M3

T#:22515

Part#: 17112283500

Ships in 1 day

6% off MSRP $ 266.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 251.99 USD

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6% off MSRP

$ 266.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 251.99 USD

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This high-quality Genuine BMW expansion tank is used on the S65 V8 engines and is a common failure item. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.

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Genuine BMW Expansion Tank Cap

T#:384985

Part#: 17137639023

In Stock

$ 21.99 USD

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$ 21.99 USD

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Expansion Tank - F90, F91, F92, F93

T#:10225927

Part#: 17137889450

In Stock

Sale - Save 3% $ 226.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 220.50 USD

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$ 226.99

This product was last offered at the strikethrough price on
05-15-2026

$ 220.50 USD

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Coolant Expansion Tank - E30 325e 325i thru 1987 528e thru 88 ...

T#:2061

Part#: 17111707540

Ships in 1 day

2% off MSRP $ 164.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 160.99 USD

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2% off MSRP

$ 164.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 160.99 USD

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This radiator expansion tank (coolant reservoir) is used on E30 325e 325es 325i 325is 325ic from 1984-1987 and E28 528e 1982-1987.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1984-1987 E30 BMW 325e 325es 325i 325is 325ic 325ix
1982-1988 E28 BMW 528e

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Coolant Expansion Tank - E9X E82 E84 E89 Z4

T#:19515

Part#: 17137640514

In Stock

6% off MSRP $ 189.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 178.99 USD

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6% off MSRP

$ 189.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 178.99 USD

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This Genuine BMW radiator expansion tank (coolant reservoir) is used on many BMW's with the N20, N51, N52 and N54 engines. Due to the higher operating temperatures of these engines plastic components are more susceptible to failure. If you are overhauling your coolant system, now is the time to consider preventative replacing this expansion tank.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
2008-2010 E82 BMW 128i 135i
2011+ E82 BMW 128i 1M Coupe
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi - Sedan
2006-2010 E90 BMW 335i 335xi 335i xDrive - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2010 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
2011-2013 E92 BMW 335is - Coupe
2007-2013 E93 BMW 328i - Convertible
2007-2010 E93 BMW 335i - Convertible
2013+ E84 BMW X1 sDrive28i X1 xDrive28i
2009+ Z4 BMW Z4 sDrive28i Z4 sDrive30i Z4 sDrive35i Z4 sDrive35is

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Genuine BMW Expansion Tank - F22/23 F3X F87

T#:185110

Part#: 17137642160

In Stock

6% off MSRP $ 180.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 169.99 USD

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6% off MSRP

$ 180.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 169.99 USD

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Replace your damaged expansion tank to prevent coolant loss or potential overheating issues.

Genuine BMW Expansion Tank -
This item fits the following BMW Chassis:
F22,F30,F31,F32,F33,F34,F36

Fits BMW Engines including:
N55

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Coolant Expansion Tank - E85 E86 Z4

T#:7457

Part#: 17117573751

In Stock at Vendor

$ 289.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 281.99 USD

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$ 281.99 USD

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This high quality Genuine BMW brand expansion tank is used on M54 and N52 engines, and is a common failure item on all E85 Z4's. Be leary of competitors selling this part for less -- is it a Genuine BMW? Probably not.

If you are overhauling your coolant system, now is the time to consider preventative replacing this expansion tank. These are known to go bad, causing a leak which can leave you stranded. We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si

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Genuine BMW Expansion Tank - F01,F06,F10,F12,F13

T#:187362

Part#: 17137647283

Ships in 1-3 days

6% off MSRP $ 189.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 178.99 USD

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6% off MSRP

$ 189.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 178.99 USD

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Replace your damaged expansion tank to prevent coolant loss or potential overheating issues.

his item fits the following BMW Chassis:
F01,F02,F06,F10,F12,F13

Fits BMW Engines including:
N54,N55,N57N

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Genuine BMW Coolant Expansion Tank - 17137542986 - E60/61 E63/64 Non-...

T#:367922

Part#: 17137542986

Ships in 1 day

5% off MSRP $ 143.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 136.99 USD

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5% off MSRP

$ 143.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 136.99 USD

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If your tank is cracked or leaking, this OE BMW expansion tank is the perfect option to get rid of the leak and prevent coolant loss.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

Genuine BMW Expansion Tank-
Fits the following BMW chassis's:
E60,E61,E62,E63

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Genuine BMW Coolant Expansion Tank - M50 M52 S50 S52

T#:360745

Part#: 17111723520

Ships in 1 day

5% off MSRP $ 215.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 205.99 USD

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5% off MSRP

$ 215.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 205.99 USD

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Genuine BMW Coolant Expansion Tank - F30 F22 F23 F32 F33

T#:527196

Part#: 17138677649

Ships in 1 day

6% off MSRP $ 189.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 178.99 USD

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Qty

6% off MSRP

$ 189.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 178.99 USD

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The coolant expansion tank in your vehicle gives additional fluid a place to go after expansion and contraction from temperature change. Because it is subjected to such drastic changes regularly, the plastic will become brittle and will often crack or break. You want to keep all the coolant in your vehicle in the cooling system to prevent overheating issues. If your tank has experienced damage such as cracking, nipples breaking off, or mounting point damage, you will need to replace it.

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Genuine BMW Coolant Level Sensor

T#:360963

Part#: 61311384739

Ships in 4 Business Days

2% off MSRP $ 92.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 90.99 USD

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2% off MSRP

$ 92.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 90.99 USD

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BMW Blue Engine Coolant Reservoir Cap

T#:38161689

Part#: 201-0393-BLU

In Stock

$ 109.99 USD

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$ 109.99 USD

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BMW Blue Engine Coolant Reservoir Cap is the perfect upgrade for BMW owners looking to enhance both the performance and appearance of their engine bay. Constructed from high-quality billet aluminum, this cap replaces the flimsy plastic factory cap, offering improved durability and a sleek, high-performance aesthetic.

Designed with precision, this coolant reservoir cap incorporates the OEM pressure relief function to maintain proper cooling system operation. Unlike inferior stick-on covers that may loosen over time, this cap is a complete replacement, ensuring a secure, leak-free fit. The blue anodized finish provides superior corrosion resistance, making it a reliable upgrade for daily drivers and track enthusiasts alike.

OEM pressure relief function – Ensures proper cooling system performance and safety
Billet aluminum construction – Provides enhanced durability and strength over factory plastic caps
Direct-fit replacement – Fully replaces the stock cap for a precise, secure fit
Blue anodized finish – Resists corrosion, heat, and wear for long-lasting performance
Motorsport-inspired design – Adds a sleek, professional look to the engine bay
Built for longevity – Engineered to withstand extreme temperatures and coolant exposure

Upgrade your BMW’s cooling system with the BMW Blue Engine Coolant Reservoir Cap, designed for superior reliability and style.

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Coolant Expansion Tank - E70 X5, E71 X6

T#:217490

Part#: 17138621092

Ships in 1 day

6% off MSRP $ 236.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 222.99 USD

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6% off MSRP

$ 236.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 222.99 USD

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Genuine BMW Expansion Tank -

This item fits the following BMW Chassis:
E70,E71,F15,F16,

This item fits the following BMW Engines:
N63,N63N,S63,N62N

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Genuine BMW Expansion Tank - 17137640515 - E82,E90,E92,E93

T#:186538

Part#: 17137640515

In Stock

6% off MSRP $ 189.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 178.99 USD

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Qty

6% off MSRP

$ 189.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 178.99 USD

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Includes the fluid level sensor. Allows for the reserve and overflow of coolant from heating and cooling expansion.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

Genuine BMW Expansion Tank -
This item fits the following BMW Chassis:
E82,E90,E92,E93

Fits BMW Engines including:
N55

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Genuine BMW - Expansion Tank Replacement Kit - Level 1

T#:374557

Part#: 17117573781OEKT

In Stock

$ 273.99 USD

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$ 273.99 USD

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The expansion tank in your BMW is a vital component of the cooling system, and because of the constant abuse from heat and temperature changes, it often fails. This kit contains all of the basic items needed for a tank replacement.

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Genuine BMW Coolant Expansion Tank

T#:21637227

Part#: 17135A7BC90

In Stock

6% off MSRP $ 198.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 187.99 USD

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Qty

6% off MSRP

$ 198.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 187.99 USD

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Coolant Expansion Tank - E60 M5,E63 M6

T#:22514

Part#: 17112283345

Ships in 4 Business Days

5% off MSRP $ 215.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 205.99 USD

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Qty

5% off MSRP

$ 215.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 205.99 USD

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This high quality Genuine BMW expansion tank is used on the S85 V10 engines, and is a common failure item. Be leary of competitors selling this part for less -- is it a Genuine BMW? Probably not. We only carry the Genuine BMW brand expansion tank as it is the only one we use in our own BMWs. If you are overhauling your coolant system, now is the time to consider preventative replacing this expansion tank. We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on. While replacing the expansion tank we recommend replacing the level sensor (sold below) as these are also common failure items.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
2004-2010 E60 BMW M5
2004-2010 E63 BMW M6

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Expansion Tank - E39 M5

T#:3026

Part#: 17112229114

In Stock

4% off MSRP $ 329.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 315.99 USD

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Qty

4% off MSRP

$ 329.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 315.99 USD

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This radiator expansion tank (coolant reservoir) is used on E39 M5 from 1999-2003. It is a common failure item. If you are overhauling your coolant system, now is the time to consider preventative replacing this expansion tank.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1999-2003 E39 BMW M5

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Expansion Tank - F80, F82, F83

T#:200338

Part#: 17132284601

Ships in 1 day

6% off MSRP $ 202.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 190.99 USD

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Qty

6% off MSRP

$ 202.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 190.99 USD

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Genuine BMW Expansion Tank -
This item fits the following BMW Chassis:
F80 M3,F82 M4,F83

Fits BMW Engines including:
S55

Expansion Tank Mounting Bracket - E46 - Manual Trans

T#:13180

Part#: 17111436250

Ships in 1 day

2% off MSRP $ 134.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 131.99 USD

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Qty

2% off MSRP

$ 134.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 131.99 USD

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This Genuine BMW part is the mounting bracket from the radiator to the expansion tank on E46 3 series Manual Transmission.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi

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Coolant Expansion Tank - E30 M3 1988-1991

T#:12562

Part#: 17112225543

In Stock

5% off MSRP $ 215.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 205.99 USD

Add to Wish List

Qty

5% off MSRP

$ 215.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 205.99 USD

Add to Wish List

This Genuine BMW cooling system expansion tank / coolant reservoir is a direct replacement for the factory unit. Replace your cracked or leaking radiator expansion tank today and save your valuable S14 engine for damage.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1988-1991 E30 BMW M3

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Genuine BMW Cap - 17121719356 - E30,E46,E46 M3

T#:46115

Part#: 17121719356

Ships in 4 Business Days

3% off MSRP $ 31.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 30.99 USD

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Qty

3% off MSRP

$ 31.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 30.99 USD

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Genuine BMW Cap
This item fits the following BMW Chassis:
E46 M3,E30,E46

Fits BMW Engines including:
M20,S54,S62

Genuine BMW Coolant Expansion Tank - E28 535i 535is 533i

T#:7405

Part#: 17111178252

Ships in 2 Business Days

2% off MSRP $ 164.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 160.99 USD

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2% off MSRP

$ 164.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 160.99 USD

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GENUINE BMW RADIATOR EXPANSION TANK 17111178252.--

This item fits the following BMWs:
BMW 5 Series - 533i, 535i

--. Fits BMW Engines including:
M30

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Silver Auxiliary Coolant Reservoir Cap

T#:38128032

Part#: 201-0394-SIL

Ships in 7 Business Days

$ 94.99 USD

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$ 94.99 USD

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BMW Silver Auxiliary Coolant Reservoir Cap is the perfect upgrade for BMW owners looking to enhance both the aesthetics and functionality of their engine bay. Unlike generic aftermarket caps that overlook critical pressure regulation, this precision-engineered cap retains the OEM pressure release functionality, ensuring safe and reliable coolant system performance.

Crafted from high-quality billet aluminum, this reservoir cap offers superior durability and resistance to heat and fluids, preventing warping or degradation over time. Unlike adhesive-based cap covers that can loosen or fall off, this cap is a direct replacement for the factory component, providing a secure, high-performance solution.

OEM pressure release functionality – Maintains proper system regulation for optimal coolant performance
Premium billet aluminum construction – Offers enhanced durability and longevity
Direct replacement design – Secure fit without adhesives or modifications
Resistant to heat and fluids – Ensures long-lasting reliability in extreme conditions
Performance-inspired look – Adds a sleek, high-end appearance to your engine bay
Upgraded durability – Prevents cracking, leaks, and premature wear

Upgrade your BMW’s cooling system with the BMW Silver Auxiliary Coolant Reservoir Cap, blending performance, reliability, and premium styling.

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Genuine BMW Expansion Tank Cap - G2x G4x G6x G7x

T#:628106

Part#: 17138665638

In Stock

11% off MSRP $ 34.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 30.99 USD

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Qty

11% off MSRP

$ 34.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 30.99 USD

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A failing expansion tank cap can compromise your entire cooling system, leading to lost pressure, fluid boil-off, and dangerous temperature spikes under load. This Genuine BMW Coolant Reservoir Cap restores factory pressure thresholds to keep your coolant boiling point elevated during spirited driving and track sessions.

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Genuine BMW Expansion Tank Replacement Kit - E82 E88 E90 E92 E93 N55 ...

T#:377422

Part#: 17137640515KT

In Stock

$ 225.99

This product was last offered at the strikethrough price on
06-08-2026

$ 222.99 USD

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$ 222.99 USD

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Genuine BMW Radiator Mounting Plate for Expansion Tank - Z4

T#:45825

Part#: 17112248408

In Stock

2% off MSRP $ 97.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 95.99 USD

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Qty

2% off MSRP

$ 97.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 95.99 USD

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Genuine BMW Mounting Plate -
This item fits the following BMW Chassis:
E85,E86

Fits BMW Engines including:
M54,N52

Genuine BMW - Expansion Tank Replacement Kit - E39 M5

T#:376939

Part#: 17112229114KT

In Stock

$ 353.99 USD

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Qty

$ 353.99 USD

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Expansion Tank Mounting Bracket - E46 E85 Z4 - Auto Trans

T#:12560

Part#: 17111436251

In Stock

3% off MSRP $ 112.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 109.99 USD

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Qty

3% off MSRP

$ 112.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 109.99 USD

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This Genuine BMW part is the mounting bracket from the radiator to the expansion tank on E46 3 series and E85/E86 Z4 with Automatic Transmission.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si

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