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Bremmen Parts BMW Cooling System Parts & Accessories for BMW 1 Series

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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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Thermostat

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T#:15511826

Part#: 11537549476

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Overheating your N52 or N54 engine can be detrimental to the longevity of your engine. We also recommend replacing your hardware 07119903851 x2

Expansion Tank Vent Hose

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T#:30729012

Part#: 17127618510

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Lower Radiator Hose

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T#:30729018

Part#: 17127564480

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Upper Radiator Hose

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T#:30729022

Part#: 17127540127

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Heater Return Line

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T#:27572099

Part#: 17127548230

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Coolant Hose - Priced Each

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T#:30729023

Part#: 17127540020

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Coolant return line

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T#:30729019

Part#: 17127548229

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Radiator Hose

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T#:5649971

Part#: 64216951946

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Connects from the top side of the radiator to the expansion tank. Often an overlooked maintenance part.

Thermostat

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T#:26538316

Part#: 11537601158

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Radiator Hose - Upper

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T#:38621422

Part#: 17127531579

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Coolant Hose Assembly

For manual transmission models only

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T#:30729020

Part#: 17127548223

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Radiator Hose - Lower

Lower

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T#:30729025

Part#: 17127531581

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Lower Cooling Hose - 17117524710

For vehicles with automatic transmission only

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T#:36913374

Part#: 17117524710

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This hose connects to the lower coolant pipe on the passenger side of vehicles equipped with automatic transmissions.

N54 Coolant Outlet Hose - 11537541992

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T#:36981059

Part#: 11537541992

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This coolant outlet hose connects the cylinder head to the thermostat housing and is a critical component of the cooling system. For many N54 owners, the "Mickey Mouse" flange is a common failure point. This plastic connector is vulnerable to degradation from heat, exposure to chemicals, and wear over time.

If your outlet hose has failed or the cylinder head flange is leaking, it’s best to replace the entire assembly for a reliable and long-lasting repair.

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Coolant Hose

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T#:30729015

Part#: 17127599450

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Coolant Inlet Pipe

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T#:36032354

Part#: 11537516414

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Low Temperature Thermostat - 97C

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T#:33612901

Part#: 11537601158-97C

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Coolant Expansion Tank Cap

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T#:36032339

Part#: 17117639020

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Bremmen Parts Coolant Hose - E82, E88, E90, E92, E93, Z4

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T#:1195934

Part#: 17127548203

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Low temperature cooling module hose.

Bremmen Parts O-Ring

Found at the flange end of the upper thermostat hose

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T#:399143

Part#: 11537545278

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Seals your cooling system

Water Pump Bolt

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T#:15478736

Part#: 11 510392553

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Secures the water pump in place.

Water Pipe

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T#:39295542

Part#: 11537545890

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Bremmen Parts Coolant Hose - E9X N52

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T#:38621425

Part#: 11537521049

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Over the years and with exposure to extremely hot coolant, the coolant hoses in your vehicle can take a beating. Being made of reinforced rubber, these hoses can fail in a number of ways. Splitting at a hose clamp, swelling, cracking, and breaking are just a few of the ways this hose can leave you stranded. Replace it at the first sign of wear to keep your coolant in your engine.

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Radiator Hose - Lower

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T#:53008808

Part#: 17127564478

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N54 Coolant Hose/Elbow - 11537545665

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T#:36100140

Part#: 11537545665

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This Coolant Hose is located behind the thermostat on N54-equipped BMW models. Due to weak rubber construction and its close proximity to the bank one turbocharger, this hose is a common failure item on high-mileage vehicles.

Whether you are replacing a failed hose or preemptively servicing your cooling system, choose this high-quality replacement from Bremmen Parts for a lasting repair.

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