BMW Coolant Expansion Tanks for BMW 3 Series F34 (2014+)

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On certain models, namely E36, E46, and E90, the factory BMW expansion tank is prone to either breaking at connection points or blowing apart altogether. If you're starting to feel like your expansion tank is on borrowed time, it's probably time to replace with either a direct OE replacement, or strengthen your cooling setup with an aluminum expansion tank - we offer numerous performance upgrades for your expansion tank. Especially if you're someone who likes to track your BMW, we recommend upgrading your expansion tank to avoid ruining your track day.
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OEM Coolant Expansion Tanks Kit - F22/23 F3X B48 B58
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Packaged by Turner - Corporate Logo
T#:27605427
Part#: 17138677649TKT
Ships on Oct 1, 2026
Sale - Save 17% $ 208.99

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

$ 173.05 USD
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Sale - Save 17%
$ 208.99

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

$ 173.05 USD
Free Shipping on orders $49 and up
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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OE BMW Coolant Expansion Tank Cap - E90 E92 F30 F32 F10 F12 F06 ...
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Genuine BMW - Corporate Logo
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
Free Shipping on orders $49 and up
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
Free Shipping on orders $49 and up
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 Engine Coolant Expansion Tank Cap - 17135A1BD89
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Genuine BMW - Corporate Logo
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
Free Shipping on orders $49 and up
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
Free Shipping on orders $49 and up


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


Engine Coolant Expansion Tank
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Bremmen Parts - Corporate Logo
T#:30729009
Part#: 17138677649
In Stock
Sale - Save 12% $ 85.99

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

$ 75.59 USD
Free Shipping on orders $49 and up
Sale - Save 12%
$ 85.99

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

$ 75.59 USD
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Genuine BMW Expansion Tank - F22/23 F3X F87
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Genuine BMW - Corporate Logo
T#:185110
Part#: 17137642160
In Stock
7% 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.

$ 168.99 USD
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7% 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.

$ 168.99 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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Genuine BMW Coolant Expansion Tank - F30 F22 F23 F32 F33
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Genuine BMW - Corporate Logo
T#:527196
Part#: 17138677649
Ships in 3 Business Days
7% 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.

$ 176.99 USD
Free Shipping
7% 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.

$ 176.99 USD
Free Shipping
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 MINI Engine Coolant Expansion Tank Cap - 17135A1BD89 ...
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Genuine MINI - Corporate Logo
T#:28337931
Part#: 17135A1BD89
Ships in 3 Business Days
9% 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.

$ 31.99 USD
Free Shipping on orders $49 and up
9% 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.

$ 31.99 USD
Free Shipping on orders $49 and up
Charge Air Cooler Expansion Tank - Rein | BMW F22/23, F3X B48/B46 B58...
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:38229110
Part#: 17138617045
Ships in 4 Business Days
Sale - Save 6% $ 73.99

This product was last offered at the strikethrough price on
06-29-2026

$ 69.55 USD
Free Shipping on orders $49 and up
Sale - Save 6%
$ 73.99

This product was last offered at the strikethrough price on
06-29-2026

$ 69.55 USD
Free Shipping on orders $49 and up

Charge Air Cooler Expansion Tank - Rein | BMW F22/23, F3X B48/B46 B58 is an essential component that ensures proper coolant circulation in the charge air cooling system. Acting as a reservoir, this expansion tank allows coolant to expand and contract with temperature fluctuations, preventing excessive pressure buildup. Over time, plastic tanks can become brittle due to constant exposure to heat cycles, leading to cracks and leaks. A failing tank can cause coolant loss, reducing the efficiency of the charge air cooler and leading to increased intake temperatures, which negatively impact horsepower and engine performance. Rein offers a high-quality direct replacement designed for durability and a perfect fit on BMW F22, F23, and F3X models with B48, B46, and B58 engines.

  • Maintains proper coolant circulation within the charge air cooling system
  • Prevents excessive pressure buildup caused by temperature fluctuations
  • Durable construction resists cracking and leaks for long-lasting performance
  • Direct replacement for BMW F22, F23, and F3X models with B48, B46, and B58 engines
  • Helps maintain optimal intake air temperatures, preserving horsepower and efficiency
  • OE-quality fitment ensures hassle-free installation and reliable function
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URO Parts Expansion Tank - 17137642160
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URO - Corporate Logo
T#:29002182
Part#: 17137642160
Back Ordered
$ 80.81 USD
Free Shipping on orders $49 and up

Expansion tanks are susceptible to damage due to constant exposure to high ambient temperatures and chemical degradation. If your expansion tank is cracked, replacing it is crucial to prevent catastrophic engine damage from overheating.

Features:

Guaranteed fitment Precision-molded to OE dimensions for compatibility with original sensors and connections Quality materials resist engine heat and harsh cooling system environments Factory pressure-tested 24-Month Unlimited Mileage Warranty URO Parts offers more than 8,000 high-quality spare parts, many of which are specifically designed to replace factory BMW components. Their business was founded on the premise of producing parts that adhere to the highest standards of precision, materials, and workmanship. Each part is closely evaluated by a team of industry professionals to determine how to offer the best blend of durability, function, and price. If you're looking for quality replacement components at a reasonable price, look no further than URO Parts.

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Genuine BMW Charge Air Cooler Expansion Tank - BMW F22/23, F3X B48/B4...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:222912
Part#: 17138617045
Ships in 6 Business Days
7% off MSRP $ 162.99

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

$ 151.99 USD
Free Shipping
7% off MSRP
$ 162.99

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

$ 151.99 USD
Free Shipping
Your charge air cooler's coolant expansion tank acts as a reservoir, housing extra coolant, and gives fluid a place to go after expansion and contraction from temperature change. Because the plastic tank is subjected to regular temperature changes, the plastic can become brittle over time and will often crack or break. If your tank is leaking and you lose too much coolant, your charge air cooler will not function properly and your air intake temperatures will begin to rise, reducing horsepower and efficiency. 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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BMW Coolant Expansion Tank - 17137642160
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Rein - Corporate Logo
T#:45791749
Part#: 17137642160
Back Ordered
Sale - Save 11% $ 85.00

This product was last offered at the strikethrough price on
04-28-2026

$ 75.69 USD
Free Shipping on orders $49 and up
Sale - Save 11%
$ 85.00

This product was last offered at the strikethrough price on
04-28-2026

$ 75.69 USD
Free Shipping on orders $49 and up
Expansion tanks take constant abuse from high heat and harsh coolant, making them prone to cracking or failure over time. A damaged tank can quickly lead to overheating and serious engine damage, so replacement is critical at the first sign of trouble. Features: Direct fitment for hassle-free installation Precision-molded to OE specs for perfect sensor and hose connections Durable construction stands up to extreme heat and coolant chemicals Factory pressure-tested for reliable performance
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Coolant Expansion Tank Cap
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bremmen Parts - Corporate Logo
T#:36032339
Part#: 17117639020
In Stock
Sale - Save 20% $ 14.99

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

$ 11.99 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 14.99

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

$ 11.99 USD
Free Shipping on orders $49 and up


Coolant Expansion Tank
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2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:17704748
Part#: 17138677649
In Stock
Sale - Save 24% $ 148.99

This product was last offered at the strikethrough price on
03-16-2026

$ 113.04 USD
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Sale - Save 24%
$ 148.99

This product was last offered at the strikethrough price on
03-16-2026

$ 113.04 USD
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Febi Coolant Expansion Tank Cap - E90 E92 F30 F32 F10 F12 F06 ...
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We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:340719
Part#: 17117639020
In Stock
$ 23.99

This product was last offered at the strikethrough price on
01-08-2026

$ 16.99 USD
Free Shipping on orders $49 and up
$ 16.99 USD
Free Shipping on orders $49 and up
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. 

Since the late 1800’s Febi has been fabricating replacement metal parts. This history is self evident in the quality and vast amount of applications they service. With more than 34,000 repair solutions for cars and commercial vehicles you can be sure Febi has you covered.

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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Meyle Coolant Expansion Tank - F22/23 230/M240, F3X 330/340/430/440 B...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:5704977
Part#: 17138677649
In Stock at Vendor
$ 164.99

This product was last offered at the strikethrough price on
03-20-2026

$ 123.99 USD
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$ 123.99 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 fewer than six to eight 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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Febi Charge Air Cooler Expansion Tank - BMW F22/23, F3X B48/B46 B58 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:27405536
Part#: 17138617045
Special Order: No Guaranteed ETA
$ 101.99

This product was last offered at the strikethrough price on
05-08-2026

$ 70.99 USD
Free Shipping on orders $49 and up
$ 70.99 USD
Free Shipping on orders $49 and up
Your charge air cooler's coolant expansion tank acts as a reservoir, housing extra coolant, and gives fluid a place to go after expansion and contraction from temperature change. Because the plastic tank is subjected to regular temperature changes, the plastic can become brittle over time and will often crack or break. If your tank is leaking and you lose too much coolant, your charge air cooler will not function properly and your air intake temperatures will begin to rise, reducing horsepower and efficiency. 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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MTC Charge Air Cooler Expansion Tank - BMW F22/23 F3X B48/B46 B58 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
MTC - Corporate Logo
T#:27405534
Part#: 17138617045
Ships in 10 Business Days
$ 64.46 USD
Free Shipping on orders $49 and up
Your charge air cooler's coolant expansion tank acts as a reservoir, housing extra coolant, and gives fluid a place to go after expansion and contraction from temperature change. Because the plastic tank is subjected to regular temperature changes, the plastic can become brittle over time and will often crack or break. If your tank is leaking and you lose too much coolant, your charge air cooler will not function properly and your air intake temperatures will begin to rise, reducing horsepower and efficiency. 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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Meyle Charge Air Cooler Expansion Tank - F22, F23, F30, F31, F32, F33...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Meyle - Corporate Logo
T#:40714794
Part#: 17138617045
Special Order: No Guaranteed ETA
$ 72.99 USD
Free Shipping on orders $49 and up
Keep your turbocharged BMW operating at its best with the Meyle Charge Air Cooler Expansion Tank 314 223 0025.

Coolant Expansion Tank Cap
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Meistersatz - Corporate Logo
T#:379621
Part#: 17117639020
Ships in 4 Business Days
$ 17.99 USD
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Quality aftermarket coolant expansion tank cap.
URO Parts Expansion Tank - 17138677649
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
URO - Corporate Logo
T#:29002185
Part#: 17138677649
Ships in 2 Business Days
$ 87.99 USD
Free Shipping on orders $49 and up

Expansion tanks are susceptible to damage due to constant exposure to high ambient temperatures and chemical degradation. If your expansion tank is cracked, replacing it is crucial to prevent catastrophic engine damage from overheating.

Features:

Guaranteed fitment Precision-molded to OE dimensions for compatibility with original sensors and connections Quality materials resist engine heat and harsh cooling system environments Factory pressure-tested 24-Month Unlimited Mileage Warranty URO Parts offers more than 8,000 high-quality spare parts, many of which are specifically designed to replace factory BMW components. Their business was founded on the premise of producing parts that adhere to the highest standards of precision, materials, and workmanship. Each part is closely evaluated by a team of industry professionals to determine how to offer the best blend of durability, function, and price. If you're looking for quality replacement components at a reasonable price, look no further than URO Parts.

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