BMW Coolant & Radiator Hoses for BMW 5 Series E39 (1996-2003)

Transmission Cooler Hose Set - E39 540i 99-03, E38 740i/iL 99-01 ...

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T#:338705

Part#: TMS16592

Ships in 3 Business Days

Sale - Save 5% $ 171.99

This product was last offered at the strikethrough price on
08-13-2026

Starting at $ 163.48 USD

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Sale - Save 5%

$ 171.99

This product was last offered at the strikethrough price on
08-13-2026

Starting at $ 163.48 USD

Add to Wish List

The oil cooler/heat exchanger for the automatic transmission is one of the most overlooked sections of the 540i and 740i cooling system. The cooler (heat exchanger) is a part of the overall cooling system and uses coolant circulated from the regular cooling system to cool the transmission oil running through this small cooling block. Some of the hoses are shared with the rest of the cooling system as well. The E38/E39 heat exchanger is located along the driver's side frame rail and is accessed from the wheel well. We recommend servicing or cleaning the heat exchanger along with any cooling system overhaul. Or if you're having transmission faults (especially for temperature) you may want to clean the transmission cooler anyway and these hoses will be a nice finishing touch.

Replacing or cleaning the heat exchanger components could lead to better shifting of the automatic as the cooler itself can become clogged. If you're experiencing harder or hesitating shifts, and the internal transmission temperature is rising without being regulated, the components in this system are the likely cause. Staying on top of the cooling needs of the transmission will help prevent a very costly transmission repair in the future. These hoses are easily replaced and you can clean the heat exchanger easily with brake cleaner and some brushes.

Included in this handy package are:

11531711381 - transmission cooling hose from water pump to radiator (with t-connector)

11531711385 - transmission cooling hose from radiator to cooler

11531711384 - transmission cooling hose from cooler to water pump

11537511207 - transmission cooling hose from cooler to chassis

hose clamp

o-ring

This hose set fits the following BMWs:
1999-2003 E39 BMW 540i
1999-2001 E38 BMW 740i 740il

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Heater Hard Line replacement Kit

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T#:15777306

Part#: 11531705210-KT

Ships on Nov 12, 2026

$ 259.99

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

$ 250.99 USD

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$ 250.99 USD

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Includes every thing needed to replace heater coolant hard lines, includes gaskets, hoses, and a URO aluminum return line!

Genuine BMW Heater Inlet Pipe - E46 E39 E53 E83 E85 Z3

T#:6939

Part#: 11531705210

In Stock

$ 66.99 USD

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$ 66.99 USD

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This is the Genuine BMW plastic heater inlet pipe that connects the cylinder head to the heater inlet on cars with the M52 or M54 engine.The plastic on this hose becomes brittle over time and eventually leads to failure.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1999-2003 E39 BMW 525i 528i 530i
2004-2006 E83 BMW X3 2.5i X3 3.0i - M54 engine
2000-2006 E53 BMW X5 3.0i
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 E85 BMW Z4 2.5i Z4 3.0i

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Genuine BMW Water Pipe - E46 E39 Z4 Z3 (M52 M54)

T#:360688

Part#: 11537502525

In Stock

$ 90.99 USD

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$ 90.99 USD

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Replace your cracked/broken coolant pipe with this Genuine BMW pipe to ensure long term reliability and perfect fitment.

Heater Inlet Pipe

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T#:594330

Part#: 11531705210

In Stock

$ 42.39 USD

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$ 42.39 USD

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This is the plastic heater inlet pipe that connects the cylinder head to the heater inlet on cars with the M52 or M54 engine.The plastic on this hose becomes brittle over time and eventually leads to failure.

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BMW M52 M54 Water Pipe

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T#:594294

Part#: 11537502525

In Stock

$ 55.99 USD

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$ 55.99 USD

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BMW M52 M54 Water Pipe is an essential replacement part designed to ensure long-term reliability and optimal performance for your BMW's cooling system. Engineered to replace cracked or broken coolant pipes, this high-quality water pipe from Turner Motorsport guarantees a perfect fit and dependable service. Investing in this replacement pipe helps prevent overheating and potential engine damage, maintaining your vehicle's performance and longevity.

Reliable replacement: Designed to replace cracked or broken coolant pipes for improved engine cooling.
Optimal fitment: Engineered to ensure a perfect fit and seamless installation.
Durable construction: Built with high-quality materials to withstand engine temperatures and environmental conditions.
Preventative maintenance: Helps avoid overheating and potential engine damage by ensuring a reliable coolant flow.
Vehicle compatibility: Specifically designed for BMW M52 and M54 engine models.

Upgrade your BMW’s cooling system with the BMW M52 M54 Water Pipe from Turner Motorsport for enhanced reliability and performance.

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Genuine BMW Upper Radiator Hose - E39 M5

T#:14567

Part#: 11531406766

Ships in 3 Business Days

$ 70.99 USD

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$ 70.99 USD

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Replacement upper radiator hose for the E39 M5. This is a Genuine BMW part.

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

Genuine BMW Lower Radiator Hose - E39 M5

T#:14568

Part#: 11531407812

Ships in 1-2 days

$ 88.99 USD

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$ 88.99 USD

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Replacement lower radiator hose for E39 M5. A Genuine BMW part.

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

Genuine BMW Lower Radiator Hose - E39 M5

T#:6934

Part#: 11531407451

Ships in 1-2 days

$ 65.99 USD

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$ 65.99 USD

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GENUINE BMW ENGINE WATER HOSE 11531407451.--

This item fits the following BMWs:
BMW M Series - M5

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Genuine BMW Lower Radiator Hose - E39 540i, E38 740i/iL

T#:16593

Part#: 11537505229

In Stock

2% off MSRP $ 45.99

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

$ 44.99 USD

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2% off MSRP

$ 45.99

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

$ 44.99 USD

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Replacement lower radiator hose - to thermostat. This is an OE BMW replacement hose, with the plastic fittings and clamps installed.

This item fits the following BMWs:
1999-2003 E39 BMW 540i
1999-2001 E38 BMW 740i 740il

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Genuine BMW Upper Radiator Hose - E39 540i, E38 740i/iL

T#:6983

Part#: 11537505228

In Stock

2% off MSRP $ 45.99

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

$ 44.99 USD

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2% off MSRP

$ 45.99

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

$ 44.99 USD

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Replacement upper radiator hose - to water pump and alternator. This is an OE BMW replacement hose, with the plastic fittings and clamps installed.

This item fits the following BMWs:
1999-2003 E39 BMW 540i
1999-2001 E38 BMW 740i 740il

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Transmission Cooling Hose from Radiator to Oil Cooler - E39 540i, E38...

T#:6946

Part#: 11531711385

Ships in 1-2 days

$ 31.99 USD

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$ 31.99 USD

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This the the transmission cooling hose that goes from the radiator to the transmission oil regulator (# 17211437772 ) /oil cooler (# 17217505823 )/.

We offer all these hoses in our Transmission Cooling Hose Kit

This hose set fits the following BMWs:
1999-2003 E39 BMW 540i
1999-2001 E38 BMW 740i 740il

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Genuine BMW Coolant Hose

For vehicles with production date up to 09/1998

T#:367831

Part#: 13541703945

Ships in 1-2 days

3% 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.

$ 33.99 USD

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3% 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.

$ 33.99 USD

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Coolant Pipe

T#:46203522

Part#: 11531741202

Ships in 1-2 days

$ 31.99 USD

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$ 31.99 USD

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Genuine BMW Coolant Hose - E52 Z8 E39 540i

For vehicles with manual transmission and production date from 09/1998

T#:367677

Part#: 11531711377

In Stock

$ 43.99 USD

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$ 43.99 USD

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Genuine BMW Transmission Cooling Hose from Oil Cooler to Metal Line -...

T#:6986

Part#: 11537511207

Ships in 1-2 days

$ 28.99 USD

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$ 28.99 USD

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This the the transmission cooling hose that goes from the transmission oil regulator (# 17211437772 ) /oil cooler (# 17217505823 ) to the metal line mounted to the chassis.

We offer all these hoses in our Transmission Cooling Hose Kit

This hose set fits the following BMWs:
1999-2003 E39 BMW 540i
1999-2001 E38 BMW 740i 740il

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URO Premium Aluminum Water Pipe - BMW M52TU M54

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T#:587659

Part#: 11537502525PRM

Ships in 2 Business Days

$ 71.99 USD

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$ 71.99 USD

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This plastic coolant water pipe connects the expansion tank return hose with the engine block

Upper Radiator Hose - E38 E39 M62

For vehicles with production date from 09/1998

10X Entries Into Our F80 M3 Sweepstakes

T#:36100134

Part#: 11537505228

In Stock

$ 52.99

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

$ 38.99 USD

Limited Qty Sale

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Qty

$ 52.99

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

$ 38.99 USD

Limited Qty Sale

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This OEM-style upper radiator hose connects the upper radiator outlet to the thermostat housing.

If you're experiencing a leak or wear in your radiator hose, replace it with this high-quality, cost-effective replacement from Bremmen Parts to restore optimal cooling system performance.

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Expansion Tank Hose

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T#:375747

Part#: 11531438632

Ships in 2 Business Days

$ 24.99 USD

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$ 24.99 USD

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E39 Upper Radiator Hose - E39 525i 528i 530i

2X Entries Into Our F80 M3 Sweepstakes

T#:4473

Part#: 11531705223

Ships in 4 Business Days

$ 47.99 USD

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$ 47.99 USD

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This cooling hose goes from the upper radiator port to the water pump. It includes a new bleed screw.

This item fits the following BMWs:
1999-2003 E39 BMW 525i 528i 530i

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Engine Coolant Recovery Tank Hose - E39, E52

T#:45574

Part#: 17102693701

In Stock

8% off MSRP $ 77.99

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

$ 71.99 USD

Limited Qty Sale

Add to Wish List

Qty

8% off MSRP

$ 77.99

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

$ 71.99 USD

Limited Qty Sale

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Genuine BMW Vent Pipe
This item fits the following BMW Chassis:
E39 M5,E39

Fits BMW Engines including:
S62

Genuine BMW Radiator Hose - Lower - E39 525i 528i 530i

For vehicles with production date from 09/1998

T#:360673

Part#: 11531705224

Ships in 3 Business Days

$ 55.99 USD

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$ 55.99 USD

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URO - Heater Inlet Pipe - E46, Z3, E39

2X Entries Into Our F80 M3 Sweepstakes

T#:34080697

Part#: 11531705210

Ships in 2 Business Days

$ 34.49 USD

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$ 34.49 USD

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This runs from the front left side of the cylinder head under the intake manifold toward the firewall.

OEM Coolant Return Pipe from Water Pump Hose to Transmission Cooler T...

2X Entries Into Our F80 M3 Sweepstakes

T#:6945

Part#: 11531711384

In Stock at Vendor

$ 68.99 USD

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$ 68.99 USD

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This is the cooling system return hose that goes from the automatic transmission cooling thermostat to the hose that comes off the lower water pump outlet.1999-2003 E39 BMW 540i
1999-2001 E38 BMW 740i 740il

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Rein Radiator Hose - Lower - E39

For vehicles with production date from 09/1998

2X Entries Into Our F80 M3 Sweepstakes

T#:341242

Part#: 11531705224

Ships in 2 Business Days

$ 37.99 USD

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$ 37.99 USD

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Includes retaining clips

OEM Rein Coolant Hose - E38 E39 M62 4.4L

For vehicles with production date from 09/1998

2X Entries Into Our F80 M3 Sweepstakes

T#:375752

Part#: 11537511207

Ships in 4 Business Days

$ 25.83

This product was last offered at the strikethrough price on
08-13-2026

$ 19.34 USD

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$ 19.34 USD

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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

Genuine BMW Radiator Hose - E39 525i 528i 530i

For vehicles with production date from 09/1998

T#:360672

Part#: 11531705223

Ships in 3 Business Days

$ 66.94 USD

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$ 66.94 USD

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Genuine BMW Coolant Connecting Pipe - S62

T#:35856

Part#: 11531406697

Ships in 1-2 days

3% off MSRP $ 39.99

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

$ 38.99 USD

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3% off MSRP

$ 39.99

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

$ 38.99 USD

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Genuine BMW Connection Pipe
This item fits the following BMW Chassis:
E39 M5,E39

Fits BMW Engines including:
S62

Genuine BMW Coolant Hose - E39 525i 528i 530i 540i M5

T#:368726

Part#: 64218367929

Ships in 1-2 days

3% off MSRP $ 35.99

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

$ 34.99 USD

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Qty

3% off MSRP

$ 35.99

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

$ 34.99 USD

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Genuine BMW Transmission Cooling Hose - Water Pump to Radiator - E39 ...

T#:6944

Part#: 11531711381

Ships in 1-2 days

$ 34.99 USD

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$ 34.99 USD

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This the the transmission cooling hose that goes from the radiator to the water pump. It also connects to the transmission cooling hose from cooler to water pump #11531711384.

We offer all these hoses in our Transmission Cooling Hose Kit

This hose set fits the following BMWs:
1999-2003 E39 BMW 540i
1999-2001 E38 BMW 740i 740il

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Uro - Aluminum Coolant Hose Connector for E9x, and Z4

2X Entries Into Our F80 M3 Sweepstakes

T#:37757289

Part#: 11537545890PRMK

In Stock

$ 24.99 USD

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$ 24.99 USD

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Aluminum Connector that replaces the OEM brittle Plastic

URO Radiator Hose - E38, E39

2X Entries Into Our F80 M3 Sweepstakes

T#:38094316

Part#: 11531711385

Ships in 2 Business Days

$ 47.99 USD

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$ 47.99 USD

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This radiator hose is routed from the lower left of the radiator and goes to the heat exchanger.

Febi Radiator Hose - Lower - E39

For vehicles with production date from 09/1998

We Price Match - Give Us A Call or Chat!

T#:4474

Part#: 11531705224

In Stock

$ 53.99

This product was last offered at the strikethrough price on
05-02-2026

$ 42.99 USD

Limited Qty Sale

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Qty

$ 53.99

This product was last offered at the strikethrough price on
05-02-2026

$ 42.99 USD

Limited Qty Sale

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This coolant hose goes from the lower radiator to the water pump. This hose has a temperature sensor in it. (sold separately- see below).

This item fits the following BMWs:
1999-2003 E39 BMW 525i 528i 530i

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Febi Radiator Hose - Upper - E39

For vehicles with production date from 09/1998

We Price Match - Give Us A Call or Chat!

T#:363755

Part#: 11531705223

Ships in 2 Business Days

$ 68.99 USD

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$ 68.99 USD

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Includes retaining clips

BMW Radiator Hose Kit - 11537505229

2X Entries Into Our F80 M3 Sweepstakes

T#:46719191

Part#: CHK0008P

Ships in 4 Business Days

$ 61.99 USD

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Qty

$ 61.99 USD

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Keep your cooling system sealed, strong, and ready for anything with this Rein radiator hose kit—your all-in-one fix for cracked, leaking, or worn factory hoses. Years of heat, pressure, and age can cause rubber to weaken, split, or swell, setting the stage for coolant leaks and potential overheating. Rein hoses are engineered to meet or exceed OEM standards, built from premium, heat-resistant materials that can take on extreme temperatures and system pressures without faltering. Each hose features factory-correct bends, fittings, and diameters for an exact, hassle-free installation—no cutting or forcing required. Whether you’re tackling a full cooling system refresh or chasing down a small coolant leak, this Rein kit provides everything needed to restore confidence and performance under the hood. Why choose this Rein radiator hose kit: Factory-level precision – Direct-fit replacements that deliver OEM-quality reliability. Built to last – Resists cracking, swelling, and chemical damage from daily heat cycling. Confidence restored – Prevents coolant loss, overheating, and on-road breakdowns. All-in-one upgrade – Includes upper and lower hoses for a complete system refresh. If keeping your BMW’s cooling system running tight and trouble-free is the goal, Rein brings the dependable quality and fitment you can count on—engineered to perform just like factory, mile after mile.

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Genuine BMW Coolant Overflow Hose

T#:360736

Part#: 17111427156

Ships in 1-2 days

3% off MSRP $ 79.99

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

$ 77.99 USD

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3% off MSRP

$ 79.99

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

$ 77.99 USD

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Genuine BMW Coolant Crossover Pipe

For vehicles with a production date from 09/1998

T#:35866

Part#: 11531437493

Ships in 8 Business Days

3% off MSRP $ 358.99

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

$ 347.99 USD

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Qty

3% off MSRP

$ 358.99

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

$ 347.99 USD

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Genuine BMW Cooling System Accumulator -
This item fits the following BMW Chassis:
E38,E39,E53 X5

Fits BMW Engines including:
M62

Genuine BMW Radiator Hose - Lower - E38 740i 740iL E39 540i

For vehicles with production date up to 09/1998

T#:13006

Part#: 11531741409

Ships in 1-2 days

2% off MSRP $ 45.99

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

$ 44.99 USD

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Qty

2% off MSRP

$ 45.99

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

$ 44.99 USD

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WATER HOSE:115050

Genuine BMW Water Pipe - E38 740i 740iL E39 540i

For vehicles with automatic transmission and a production date from 09/1998

T#:367678

Part#: 11531711384

In Stock

3% off MSRP $ 85.99

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

$ 82.99 USD

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Qty

3% off MSRP

$ 85.99

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

$ 82.99 USD

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Genuine BMW Expansion Tank Hose - E39 540i E38 740iL 740i E31 840Ci ...

T#:367696

Part#: 11531741404

Ships in 1-2 days

$ 34.99 USD

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Qty

$ 34.99 USD

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Genuine BMW Cooling Hose

T#:367830

Part#: 13541703865

In Stock

$ 53.99 USD

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Qty

$ 53.99 USD

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Genuine BMW Heater Return Hose

For vehicles with production date up to 09/1998

T#:22318

Part#: 11531433059

Ships in 1-2 days

2% off MSRP $ 252.00

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

$ 247.00 USD

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Qty

2% off MSRP

$ 252.00

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

$ 247.00 USD

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Genuine BMW Heater Return Pipe -
This item fits the following BMW Chassis:
E36,E39

Fits BMW Engines including:
M52,S52

Genuine BMW Coolant Hose - E38 740i 740iL E39 540i

For vehicles with production date up to 09/1998

T#:360686

Part#: 11531745595

Ships in 1-2 days

2% off MSRP $ 45.99

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

$ 44.99 USD

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Qty

2% off MSRP

$ 45.99

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

$ 44.99 USD

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Genuine BMW Radiator Hose - Upper - E39 528i

For vehicles with production date up to 09/1998

T#:360683

Part#: 11531740832

Ships in 5 Business Days

$ 34.99 USD

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Qty

$ 34.99 USD

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Genuine BMW Coolant inlet hose - E39 525i 530i

T#:150804

Part#: 64218375524

Special Order: No Guaranteed ETA

4% off MSRP $ 49.99

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

$ 47.99 USD

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Qty

4% off MSRP

$ 49.99

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

$ 47.99 USD

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Genuine BMW Hose, Inlet, With Branch Piece -
This item fits the following BMW Chassis:
E39

Heater Inlet Pipe

We Price Match - Give Us A Call or Chat!

T#:594084

Part#: 11531705210

Ships on Oct 14, 2026

$ 47.46 USD

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$ 47.46 USD

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Runs from the front left side of the engine to the heater inlet

Gates Expansion Tank Hose - E39

For vehicles with production date from 09/1998

T#:591765

Part#: 11531438633

Ships on Oct 16, 2026

$ 59.99 USD

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$ 59.99 USD

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Runs from the expansion tank to auxiliary water pump

Genuine BMW Coolant Transfer Pipe

T#:35937

Part#: 11531741202

Special Order: No Guaranteed ETA

6% off MSRP $ 100.99

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

$ 94.99 USD

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6% off MSRP

$ 100.99

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

$ 94.99 USD

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Genuine BMW Pipe -
This item fits the following BMW Chassis:
E38,E39,E53 X5

Fits BMW Engines including:
M62

Genuine BMW Coolant Bleeder Screw 17111712788

T#:7432

Part#: 17111712788

Ships in 1-2 days

$ 5.94 USD

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Qty

$ 5.94 USD

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This is the Genuine BMW Coolant bleeder screw. We recommend a heavy duty Aluminum replacement from ECS Tuning if you do not want to replace this part again when it fails.

Genuine BMW Vent Screw
This item fits the following BMW Chassis:
E36 M3,E46 M3,E85 Z4M,E53 48IS,E30,E34,E36,E38,E39,E46,E53 X5 X5,E83 X3,E85 Z4,E86 Z4,E90

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Bremmen Coolant Bleeder Screw - BMW E30 E36 E38 E39 E46 E83 E90 Z4 ...

10X Entries Into Our F80 M3 Sweepstakes

T#:640140

Part#: 17111712788

Ships on Dec 24, 2026

Sale - Save 39% $ 3.99

This product was last offered at the strikethrough price on
09-02-2026

$ 2.44 USD

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Qty

Sale - Save 39%

$ 3.99

This product was last offered at the strikethrough price on
09-02-2026

$ 2.44 USD

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Plastic bleeder screw for cooling system is used to bleed air that would otherwise create an air pocket and lead to overheating. Includes o-ring seal.

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BMW Coolant & Radiator Hoses for BMW 5 Series E39 (1996-2003)

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