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BMW Cooling System Parts & Accessories

The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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Gates Performance Thermostat - 71*C - BMW S65 S85

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T#:394624

Part#: 11537836155

In Stock

$ 78.99 USD

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$ 78.99 USD

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Performance low-temperature thermostat for E90, E92, E93 M3 - S65 engine- E60 M5 E63 M6 with S85 engine. Your car may still operate fine according to the instrument display but the electrically-operated thermostat may be going bad.

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Gates Upper Radiator Hose - E82, E88, E90, E92, E93, Z4

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:592003

Part#: 17127540127

Ships in 5 Business Days

$ 55.99 USD

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$ 55.99 USD

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The hose that comes off of the top outlet on the radiator

Gates Radiator Hose - Lower - E82, E88, E90, E91, E92

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T#:340651

Part#: 17127531581

In Stock at Vendor

$ 74.99

This product was last offered at the strikethrough price on
05-07-2026

$ 71.99 USD

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$ 71.99 USD

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Take care of your cooling system - replace old hoses

Automatic Transmission Cooler - E36 Z3 E34

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T#:2069

Part#: 17201728770

Ships in 1 Business Day

$ 207.15

This product was last offered at the strikethrough price on
05-11-2026

$ 201.97 USD

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$ 201.97 USD

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This transmission fluid/oil cooler fits E36 318i 318is 318ti 323i 323is 325i 325is 328i 328is M3, E34 525i 530i 1993-1995 and Z3 1.9 2.3 2.5i 2.8 3.0i with automatic transmission.

This oil cooler fits the following BMWs:
1992-1998 E36 BMW 318i 318is 318ti 323is 325i 325is 328i 328is M3
1993-1995 E34 BMW 525i 525i Wagon
1994-1995 E34 BMW 530i 530i Wagon
1996-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0ibr>

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Gates Radiator Hose - Lower - E82, E88, E90, E91, E92, E93, Z4 ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:362198

Part#: 17127564478

In Stock at Vendor

$ 68.99

This product was last offered at the strikethrough price on
05-07-2026

$ 66.99 USD

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$ 66.99 USD

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Replace split, hard, or bulging hoses

Gates Coolant Hose - E30

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T#:592901

Part#: 11531276541

In Stock at Vendor

$ 21.99

This product was last offered at the strikethrough price on
05-07-2026

$ 21.00 USD

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$ 21.00 USD

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Hose that connects the thermostat to the temperature time switch housing

Gates Radiator Hose - Upper - E83

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T#:363924

Part#: 11533400207

In Stock at Vendor

$ 68.99

This product was last offered at the strikethrough price on
05-07-2026

$ 66.99 USD

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$ 66.99 USD

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Aftermarket replacement

Gates Radiator Hose - Lower - E30

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:591753

Part#: 11531279895

Ships in 10 Business Days

$ 29.99

This product was last offered at the strikethrough price on
06-03-2026

$ 26.99 USD

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$ 26.99 USD

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Replace your radiator hose before a blown hose leaves you stranded

Gates Coolant Hose - E36

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T#:591787

Part#: 11531730351

Ships on Jul 29, 2026

$ 51.99 USD

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$ 51.99 USD

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Attaches the expansion tank to the heater return hose

Gates Expansion Tank Hose - E39

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T#:591765

Part#: 11531438633

Ships on Jul 29, 2026

$ 47.99 USD

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$ 47.99 USD

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Runs from the expansion tank to auxiliary water pump

Lower Radiator Hose To Thermostat Housing - Front 23485

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T#:592163

Part#: 17122754223

Ships on Jul 29, 2026

$ 41.99 USD

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$ 41.99 USD

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Gates Radiator Hose - Upper - E30

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:591754

Part#: 11531286914

Ships on Jul 29, 2026

$ 21.99 USD

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Qty

$ 21.99 USD

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Hose from radiator to water pump

Gates Radiator Hose - lower - E28

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T#:591752

Part#: 11531278045

Ships on Jul 29, 2026

$ 23.99 USD

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$ 23.99 USD

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Replace your radiator hose before a blown hose leaves you stranded.

Gates Radiator Hose - Upper - E46

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T#:1673

Part#: 17127510952

Ships on Jul 29, 2026

$ 53.99 USD

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$ 53.99 USD

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This upper radiator hose fits the following BMWs:
1999-2000 E46 3 Series Sedan/Wagon - 323i & 328i
1999-2000 E46 3 Series Coupe/Conbertible - 323Ci & 328Ci
2001-2005 E46 3 Series Sedan/Wagon - 325i, 325xi, 330i, 330xi
2001-2006 E46 3 Series Coupe/Convertible - 325Ci, 330Ci

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Gates Radiator Hose - Upper - E46

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:362110

Part#: 11537830716

In Stock at Vendor

$ 48.99

This product was last offered at the strikethrough price on
05-07-2026

$ 46.99 USD

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$ 46.99 USD

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Connects the radiator to the thermostat housing

ACM Auxiliary Fan Assembly - Suction - E36, Z3

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T#:371894

Part#: 64508372039

Back Ordered

$ 166.99 USD

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$ 166.99 USD

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Mounted behind the radiator

Gates Radiator Hose - Lower - E36

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:591785

Part#: 11531726344

In Stock at Vendor

$ 40.99

This product was last offered at the strikethrough price on
05-07-2026

$ 39.99 USD

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$ 39.99 USD

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Replace your radiator hose before a blown hose leaves you stranded.

Mounting Part

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T#:5095677

Part#: 64113422668

In Stock at Vendor

$ 25.99 USD

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$ 25.99 USD

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ACM Air Conditioning Fan - E39

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T#:374495

Part#: 64548380780

Ships in 1-2 days

$ 229.99

This product was last offered at the strikethrough price on
05-07-2026

$ 223.99 USD

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$ 223.99 USD

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Also known as "pusher fan"

Upper Radiator Hose 23377

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:592181

Part#: 17127515501

Ships on Jul 29, 2026

$ 124.99 USD

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Qty

$ 124.99 USD

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Gates Radiator Hose - Upper - E36, Z3

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:401921

Part#: 11531708499

Ships on Jul 29, 2026

$ 39.99 USD

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Qty

$ 39.99 USD

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New upper radiator hose for your BMW

BMW N54 N55 Water Pump

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T#:592891

Part#: 11517563659

Ships on Jul 29, 2026

$ 759.99 USD

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Qty

$ 759.99 USD

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BMW N54 N55 Water Pump ensures reliable cooling performance for your BMW's engine. This high-quality water pump is designed for late-model N54 and N55 engines, offering enhanced reliability and ease of service. Unlike older models, it does not require a gasket or o-ring, simplifying installation and maintenance. Replacing worn water pumps during routine cooling system services is crucial for maintaining optimal engine performance and preventing overheating issues.

Enhanced reliability for peace of mind
Easy installation and serviceability
No need for gasket or o-ring
Maintains optimal engine cooling efficiency
Designed specifically for BMW N54 and N55 engines

Ensure your BMW's engine stays cool and performs efficiently with the BMW N54 N55 Water Pump.

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Radiator Hose

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:593065

Part#: 17127537108

Ships on Jul 29, 2026

$ 66.99 USD

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Qty

$ 66.99 USD

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Gates Throttle Body Return Hose - E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:591790

Part#: 11531738054

Ships on Jul 29, 2026

$ 64.99 USD

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Qty

$ 64.99 USD

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Replace your leaking hose

Coolant Hose 51756

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:9642133

Part#: 17122754573

Ships on Jul 29, 2026

$ 44.99 USD

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Qty

$ 44.99 USD

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Gates Water Valve - E53, E70, E71, F15, F16 , F85, F86

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:553629

Part#: 64116910544

Ships on Jul 29, 2026

$ 280.00 USD

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Qty

$ 280.00 USD

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With additional water pump

Gates Radiator Hose - Lower - E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:591784

Part#: 11531722852

Ships on Jul 29, 2026

$ 15.99 USD

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Qty

$ 15.99 USD

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Hose from radiator to thermostat housing

Gates Water Hose - Z3

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:385314

Part#: 11531436988

Ships on Jul 29, 2026

$ 37.99 USD

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Qty

$ 37.99 USD

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Serves as a supply line to the radiator

Coolant Hose - Upper

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:9642134

Part#: 17127535901

Ships on Jul 29, 2026

$ 30.99 USD

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Qty

$ 30.99 USD

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Gates Coolant Hose - E30

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:593004

Part#: 13541719967

Ships on Jul 29, 2026

$ 13.99 USD

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Qty

$ 13.99 USD

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Throttle housing small hose

Gates Water Pump - E30, E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:591715

Part#: 11511719836

Ships on Jul 29, 2026

$ 122.99 USD

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Qty

$ 122.99 USD

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Includes gasket. New - not remanufactured!

Gates Radiator Hose - Upper - E28

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:557799

Part#: 11531287682

Ships on Jul 29, 2026

$ 15.99 USD

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Qty

$ 15.99 USD

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Replace your radiator hose before a blown connection leaves you stranded

Gates Upper Radiator Hose - E30

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:591774

Part#: 11531717622

Ships on Jul 29, 2026

$ 17.99 USD

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Qty

$ 17.99 USD

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A common source of cooling system failure

Gates Radiator Hose - Upper - E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:591781

Part#: 11531722215

Ships on Jul 29, 2026

$ 42.99 USD

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$ 42.99 USD

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Upper hose that connects your radiator to the flange

Thermostat

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:393494

Part#: 11537601158

Ships on Jul 29, 2026

$ 108.99 USD

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Qty

$ 108.99 USD

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Thermostat Housing Cap / Radiator Cap

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:637163

Part#: 11531486703

Ships on Jul 29, 2026

$ 6.99 USD

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Qty

$ 6.99 USD

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Gates Heater Hose - E30

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:596346

Part#: 64211380527

Back Ordered

$ 18.99 USD

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Qty

$ 18.99 USD

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Inlet hose to the heater core

Gates Coolant Hose - Molded - E30, E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:592918

Part#: 11531718982

Back Ordered

$ 20.99 USD

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Qty

$ 20.99 USD

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Connects between the Water pump and the thermostat

Gates Radiator Hose - Upper - E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:591777

Part#: 11531720678

Back Ordered

$ 18.99 USD

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Qty

$ 18.99 USD

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Hose from radiator to water pump

Gates Coolant Hose - E34

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:592903

Part#: 11531287651

Back Ordered

$ 20.99 USD

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Qty

$ 20.99 USD

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From water pump to thermostat housing

Gates Coolant Hose - E39

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:596352

Part#: 64218387521

Back Ordered

$ 64.99 USD

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Qty

$ 64.99 USD

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From heater core to engine

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