BMW Cooling System Parts & Accessories for BMW 3 Series E46 (1999-2005)

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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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Genuine BMW Water Connection Pipe - E46 M54 M53
For vehicles with automatic transmission only
Genuine BMW - Corporate Logo
T#:7419
Part#: 17111707817
Ships in 1 day
5% off MSRP $ 43.99

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

$ 41.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 43.99

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

$ 41.99 USD
Free Shipping on orders $49 and up


Genuine BMW Coolant Connection Fitting -
This item fits the following BMW Chassis:
E46

Fits BMW Engines including:
M52,M54,M56

Genuine BMW Radiator - Automatic Transmission - E46 Z4
For vehicles with automatic transmission only
Genuine BMW - Corporate Logo
T#:360754
Part#: 17119071519
Ships in 1 day
6% off MSRP $ 487.99

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

$ 459.99 USD
6% off MSRP
$ 487.99

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

$ 459.99 USD
This is a Genuine BMW brand replacement radiator for a E46 and Z4 BMW. Save big, while still getting the highest quality radiator available for your BMW. 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.
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Genuine BMW - Corporate Logo
T#:367652
Part#: 11527505302
Ships in 2 Business Days
3% off MSRP $ 401.99

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

$ 388.99 USD
Free Shipping
3% off MSRP
$ 401.99

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

$ 388.99 USD
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Genuine BMW - Corporate Logo
T#:49516
Part#: 22321096931
Ships in 2 Business Days
3% off MSRP $ 263.99

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

$ 254.99 USD
Free Shipping
3% off MSRP
$ 263.99

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

$ 254.99 USD
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Genuine BMW Gearbox Support -
This item fits the following BMW Chassis:
E46,E85


Genuine BMW - Corporate Logo
T#:14858
Part#: 12521741900
Ships in 2 Business Days
6% off MSRP $ 82.99

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

$ 77.99 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 82.99

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

$ 77.99 USD
Free Shipping on orders $49 and up


Genuine BMW Temperature Switch - 35 Cel
This item fits the following BMW Chassis:
E39 M5,E46 M3,E38,E39,E46,E53 X5 X5,E85 Z4

Fits BMW Engines including:
M52,M54,M56,M60,M62,M73,M73N,S54,S62

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Genuine BMW Radiator - Automatic
For vehicles with manual transmission only and production date up to 05/2005 For vehicles with manual transmission only and with production date from 10/1998 For vehicles with manual transmission only
Genuine BMW - Corporate Logo
T#:360753
Part#: 17119071518
Ships in 2 Business Days
6% off MSRP $ 487.99

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

$ 459.99 USD
6% off MSRP
$ 487.99

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

$ 459.99 USD

Genuine BMW - Corporate Logo
T#:7409
Part#: 17111436259
Ships in 2 Business Days
3% off MSRP $ 108.99

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

$ 105.99 USD
3% off MSRP
$ 108.99

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

$ 105.99 USD
This radiator fan shroud mounts to your radiator and helps to direct airflow through the radiator. It's also the mounting point for the coolant reservoir.

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:
2001-2005 E46 BMW 325i 325ci 325xi 330i 330ci 330xi
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Genuine BMW - Corporate Logo
T#:13727086
Part#: 17115A7DEF2
Ships in 2 Business Days
6% off MSRP $ 756.99

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

$ 713.99 USD
6% off MSRP
$ 756.99

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

$ 713.99 USD
More than likely, you are going to replace the radiator in your vehicle at least once. The joints where the cores meet the end tanks tend to get weak and are the first place to spring a leak. Impacts to the fins themselves can cause holes to form. Corrosion and clogging from the inside can make cooling less than effective and compromise coolant flow. Replace your leaking unit with a factory replacement and get that jug of coolant out of your back seat. This is a factory original style radiator from Genuine BMW and will fit perfectly into the stock location. Cooling will be identical to what your car came with originally. A great replacement with all the proper connections and in all of the proper locations. When doing radiator and cooling service, you will obviously lose coolant. Browse through the cooling section of your model to see factory correct coolants, seals, and caps. Before beginning, check your hoses to make sure everything is in good shape.
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Genuine BMW - Corporate Logo
T#:13187
Part#: 17117530254
Ships in 2 Business Days
4% off MSRP $ 55.99

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

$ 53.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 55.99

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

$ 53.99 USD
Free Shipping on orders $49 and up
Engineered to official BMW standards, this high strength plastic bracket locks the radiator into place while allowing necessary thermal movement, preventing stressed hose fittings or fatigue on radiator core seams. Ideal for cooling system overhauls, front end repairs, or replacing aged hardware, this genuine service part restores structural integrity to your front end cooling setup.
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Genuine BMW - Corporate Logo
T#:369665
Part#: ECSE461711-2
Ships in 5 Business Days
$ 1,105.99 USD
Free Shipping
$ 1,105.99 USD
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A Level 2 kit that includes belt service components
Genuine BMW - Corporate Logo
T#:367654
Part#: 11527831619
Ships in 2 Business Days
3% off MSRP $ 401.99

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

$ 388.99 USD
Free Shipping
3% off MSRP
$ 401.99

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

$ 388.99 USD
Free Shipping

Ensure optimal engine cooling for your BMW with this Fan Clutch, designed to adapt the fan speed based on the engine's rotational speed. Perfect for city driving and traffic, this fan clutch minimizes rotational load and drag when cooling is not critical.

  • Compatible with various BMW models
  • Adjusts fan speed based on engine rotational speed
  • Ideal for city driving and traffic conditions
  • Reduces rotational load and drag when cooling is not critical
  • Enhances engine cooling efficiency
  • Suitable for vehicles with mechanical fans
  • Easy solution for vehicles running hot in traffic

Upgrade your BMW's cooling system with this Fan Clutch, ensuring a cool and efficient engine performance, especially during city driving and traffic stops.

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Genuine BMW - Corporate Logo
T#:150725
Part#: 64216902678
Ships in 2 Business Days
2% off MSRP $ 55.99

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

$ 54.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 55.99

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

$ 54.99 USD
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Genuine BMW Hose F Engine Inlet And Water Valve
This item fits the following BMW Chassis:
E46 M3,E46



Genuine BMW - Corporate Logo
T#:20181
Part#: 64546988914
Ships in 5 Business Days
2% off MSRP $ 938.99

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

$ 915.99 USD
2% off MSRP
$ 938.99

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

$ 915.99 USD
This electric auxiliary fan for BMW E46 mounts in front of the radiator and is designed to push air through the A/C Condenser and main radiator. It provides additional cooling for when the car is in traffic. It is a common failure item. If your engine temps are creeping up or if your A/C isn't blowing cold this could be the cause.

Genuine BMW Pusher Fan
This item fits the following BMW Chassis:
E46 M3,E46

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Genuine BMW - Corporate Logo
T#:55245856
Part#: 0711990XXKTKT
Ships in 1 day
New Item
$ 35.31 USD
Free Shipping on orders $49 and up
Turner Motorsport offers this Genuine BMW Hex Bolt and Washer Kit to keep your chassis maintenance or engine refresh completely up to factory standard.
Genuine BMW Motorsport - Corporate Logo
T#:1171
Part#: TMS1171
Ships in 6 Business Days
$ 415.45 USD
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$ 415.45 USD
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This is a genuine BMW Motorsport part, designed specifically for BMW racing applications. We use this exact thermostat setup in our Championship-winning E46 330i race car. It is designed to be used on all M54 and M52TU double-VAN0S engines, as used in the 1999-2000 E46 323/328 and 2001-2005 E46 325/330. This 60 degree C (140 defrees F) thermostat comes complete with plastic thermostat housing. It does not use the plug and wiring for the stock DME so this should only be used with an aftermarket engine management system (Motec, Bosch, etc).

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.
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Heater Inlet Pipe
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:594084
Part#: 11531705210
Ships on Sep 17, 2026
$ 47.46 USD
Free Shipping on orders $49 and up
Runs from the front left side of the engine to the heater inlet

CTA Tools - Corporate Logo
T#:641760
Part#: CTAA878
Ships on Sep 17, 2026
$ 23.57 USD
Free Shipping on orders $49 and up
Use to remove and install Fan Clutch Assemblies when replacing Water Pumps or doing other Engine Services
Automatic Transmission Thermostat
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:13661147
Part#: 17111437362
In Stock
Sale - Save 37% $ 43.99

This product was last offered at the strikethrough price on
07-14-2026

$ 27.54 USD
Free Shipping on orders $49 and up
Sale - Save 37%
$ 43.99

This product was last offered at the strikethrough price on
07-14-2026

$ 27.54 USD
Free Shipping on orders $49 and up
This unit controls the temperature of your automatic transmission fluid

DO88 - Corporate Logo
T#:14155765
Part#: KIT219S
Ships on Sep 21, 2026
$ 360.99 USD
Free Shipping on orders $49 and up
These hoses are entirely manufactured in high-quality silicone for best finish and durability. With three to five layers of armory, depending of the inner diameter, the hoses withstand high-pressure rates and high temperatures for a long time. The original hoses are manufactured in rubber that not seldom cracks from age. This is the durable solution for you that in addition improves the looks!
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Gates - Corporate Logo
T#:1673
Part#: 17127510952
Ships on Sep 21, 2026
$ 53.99 USD
Free Shipping on orders $49 and up

 


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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DO88 - Corporate Logo
T#:13924829
Part#: DO88KIT70S
Ships on Sep 21, 2026
$ 256.99 USD
Free Shipping on orders $49 and up
Made out of high-quality silicone, these hoses display the highest levels of durability and quality. With three to five layers of armory the hoses are designed to withstand high pressure and heat for an extended period of time. The OE hoses are known to crack and leak but this hose kit eliminates any chance of that.
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DO88 - Corporate Logo
T#:13891810
Part#: WC310R
Ships on Sep 21, 2026
$ 735.99 USD
$ 735.99 USD
The team at DO88 has vigorously tested this radiator to deliver peak performance with the peace of mind of quality for your E46 M3. They guarantee reliability and endurance in all situations to let your car breathe better than before! Boasting a 17% increase in core volume, this upgrade is a no-brainer for petrol heads like us. Keeping core temperatures low eliminates the risk of heat soak leading to overheating giving you max performance at any given moment. no compromise has been made at DO88 leaving you with one of the best radiator options on the market!
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BMW Radiator Expansion Tank Pressure Fitting
Requires the use of a Motive Power Bleeder, sold separately
Motive - Corporate Logo
T#:380462
Part#: 1175
Ships on Sep 24, 2026
$ 24.99 USD
Free Shipping on orders $49 and up
Allows you to check for leaks in the coolant system
Automatic Transmission Thermostat
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:15511829
Part#: 17 111437362
Ships on Sep 24, 2026
Sale - Save 3% $ 37.99

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

$ 36.85 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 37.99

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

$ 36.85 USD
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Heat exchanger for your automatic transmission, usually changed when you replace your expansion tank.


Zionsville Autosport - Corporate Logo
T#:55533523
Part#: RAD-17-SHR
Ships on Sep 25, 2026
New Item
$ 505.00 USD
$ 505.00 USD
Enthusiast Bundles - Corporate Logo
T#:37419798
Part#: 008363LA02EB1KT
Ships on Nov 12, 2026
Sale - Save 24% $ 1,055.95

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

$ 799.04 USD
Free Shipping on orders $49 and up
Sale - Save 24%
$ 1,055.95

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

$ 799.04 USD
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Take your BMW’s cooling system to the next level with this Turner Motorsport Cooling Upgrade Kit. Featuring a Heavy-Duty Aluminum Expansion Tank and a Mechanical Thermostat Conversion Kit, this combo is engineered to deliver ultimate reliability and superior performance for M52TU/M54 engines. Say goodbye to the cooling system failures common in stock setups—Turner Motorsport has you covered.

Turner Motorsport M52TU/M54 Heavy-Duty Expansion Tank Kit

The Turner Motorsport Aluminum Expansion Tank is a premium upgrade designed to replace the fragile factory plastic tank, which is known to crack, leak, or even explode. Crafted for durability, this tank’s all-aluminum construction with wrinkle black powder coating ensures this is the last expansion tank you’ll ever need.

Why Upgrade? The factory plastic tanks on BMW M52TU/M54 engines are notorious for failure under heat and pressure. Avoid the risk of being stranded on the side of the road with a mess of coolant—Turner Motorsport’s aluminum expansion tank is built to withstand years of demanding use and intense heat cycles.

Key Features and Benefits:

Complete Kit: Includes Turner Aluminum Expansion Tank, coolant level sensor, expansion tank cap, and flared coolant pressure release line. OEM Fit & Capacity: Direct fit with no modifications, maintains stock coolant capacity and expansion volume. Baffled Design: Prevents air pockets during aggressive driving and ensures accurate coolant level readings. Premium Construction: TIG-welded 5052 aluminum with machined fittings for factory hose compatibility. Turner Motorsport M52TU/M54 Mechanical Thermostat Conversion Kit

Replace your problematic factory plastic thermostat housing with Turner Motorsport’s high-quality billet aluminum Thermostat Conversion Kit. This upgrade not only provides increased reliability but also allows for thermostat swaps to suit specific temperature requirements, making it ideal for daily drivers and track cars alike.

Why Make the Switch? The factory plastic thermostat housing with its built-in thermostat is prone to cracking and requires the whole unit to be replaced during maintenance. Turner’s conversion kit changes the game by providing a durable billet housing with a replaceable thermostat for flexibility and lower maintenance costs.

Key Features and Benefits:

Increased Reliability: Uses an M50/S50 mechanical thermostat, including an 80°C thermostat for enhanced cooling control. Customizable: Includes barbed hose connections for standard E46 M3 hoses and -16 ORB connections for custom hoses. Engineered to Last: CNC-machined from billet 6061 aluminum and black anodized for corrosion resistance. Enhanced Sealing: Features a Viton gasket for superior durability and sealing performance. Kit Includes:

6061 Billet Aluminum Thermostat Housing 80°C Mechanical Thermostat Thermostat Housing Gasket Thermostat Harness ECS Silicone E46 M3 Cooling Hoses Turner Motorsport Precision Engineering & Product Development

Every component in this cooling upgrade kit has been rigorously designed, engineered, and tested by Turner Motorsport’s Research and Development team. Using state-of-the-art technology such as FARO laser scanning, SolidWorks 3D modeling, and in-house rapid prototyping, Turner ensures that these products meet the highest standards of quality, precision, and durability.

Upgrade your BMW with confidence—Turner Motorsport is your partner in performance and reliability.

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Nissens - Corporate Logo
T#:394205
Part#: 17102228941
Special Order: No Guaranteed ETA
$ 619.99 USD
$ 619.99 USD
Aftermarket radiator for your E46 M3

BMW S54 ECS Exact-fit Waterpipe Connecting Line
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:393388
Part#: 013178ECSKT
In Stock
Sale - Save 25% $ 148.99

This product was last offered at the strikethrough price on
06-13-2026

$ 111.74 USD
Free Shipping
Sale - Save 25%
$ 148.99

This product was last offered at the strikethrough price on
06-13-2026

$ 111.74 USD
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BMW S54 ECS Exact-fit Waterpipe Connecting Line

Enhance your vehicle’s performance with the BMW S54 ECS Exact-fit Waterpipe Connecting Line, crafted for precision and durability.

  • Precision Engineering: Engineered to exact specifications for a perfect fit.
  • Enhanced Cooling: Improves coolant flow for better engine temperature regulation.
  • Durable Construction: Made from high-quality materials to withstand engine heat and pressure.
  • Direct Replacement: Installs seamlessly without modifications for hassle-free maintenance.

Upgrade your BMW S54 engine with confidence using the ECS Exact-fit Waterpipe Connecting Line, delivering reliability and performance you can depend on.

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Febi Radiator Fan Clutch - E34, E36, E39, E46, E53, Z3
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:382395
Part#: 11527505302
Ships on Nov 27, 2026
$ 187.99 USD
Free Shipping
$ 187.99 USD
Free Shipping
Common source of engine overheating
Water Pump and Seal - with upgraded metal impeller - MEYLE
5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Meyle - Corporate Logo
T#:579324
Part#: 11517509985
Ships on Sep 17, 2026
$ 52.99 USD
Free Shipping on orders $49 and up

Ensure the optimal performance of your BMW by addressing the crucial component of the water pump. Turner Motorsport provides high-quality water pumps designed to keep coolant flowing smoothly. If left unchecked, a failing water pump can lead to overheating issues, potentially causing damage to engine internals. Common among German vehicles, water pump failure may result in unnecessary visits to the repair shop. Preventive maintenance, especially during timing belt replacements, is essential to avoid rapid coolant temperature rise and potential engine damage.

  • Prevents overheating issues
  • Guards against engine damage
  • Common replacement during timing belt maintenance
  • Ensures smooth coolant flow for optimal engine performance
  • Options for thermostats available on Turner Motorsport's website
  • Convenient coolant replacement options
  • Recommended replacement around 60,000 miles
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Genuine BMW - Corporate Logo
T#:360662
Part#: 11521712058
Back Ordered
3% off MSRP $ 104.99

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

$ 101.99 USD
Free Shipping
3% off MSRP
$ 104.99

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

$ 101.99 USD
Free Shipping
Bremmen Parts Water Pump - E46 M3 S54
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:36981065
Part#: 11517838159
Ships on Dec 2, 2026
Sale - Save 20% $ 138.99

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

$ 110.97 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 138.99

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

$ 110.97 USD
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A failing water pump is a recipe for engine overheating and costly internal damage. Keep your coolant flowing and your engine protected by replacing your aging pump with this high-quality OE unit from Bremmen Parts.

Water pump replacement is suggested at 60,000 - 80,000 miles.

This pump includes the alignment dowel, sealing gasket, and thermostat sealing o-ring. We recommend picking up a water pipe sealing o-ring (11537830712) and thermostat (11531318274) for a comprehensive service.

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Sachs - Corporate Logo
T#:591739
Part#: 11527505302
Back Ordered
$ 231.08 USD
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$ 231.08 USD
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Common source of engine overheating

Expansion Tank Mounting Plate
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:584756
Part#: 17111436250
Ships in 1 Business Day
$ 49.99 USD
Free Shipping on orders $49 and up
Replace your broken mounting plate to keep your expansion tank secure and prevent leaks.
URO Water Distribution Pipe - E46
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:578992
Part#: 17111707817U
In Stock
$ 27.99

This product was last offered at the strikethrough price on
04-15-2026

$ 22.99 USD
Free Shipping on orders $49 and up
$ 22.99 USD
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Plastic 3-way flange that brings together lower radiator hose-expansion hose-bypass hose.
Rein Expansion Tank Mounting Plate - E46, Z4
For vehicles with automatic transmission only
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:402139
Part#: 17111436251
Ships in 1 Business Day
Sale - Save 5% $ 80.99

This product was last offered at the strikethrough price on
08-31-2026

$ 76.94 USD
Free Shipping
Sale - Save 5%
$ 80.99

This product was last offered at the strikethrough price on
08-31-2026

$ 76.94 USD
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Mounts to the side of the radiator for retaining the expansion tank


Gates - Corporate Logo
T#:362110
Part#: 11537830716
Ships in 1 Business Day
$ 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
Genuine BMW Motorsport - Corporate Logo
T#:337991
Part#: 11531417215
Back Ordered
Starting at $ 233.98 USD
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Starting at $ 233.98 USD
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E46M3 Motorsport Thermostat 55C (Also fits Euro E36 M3 engine) A Genuine BMW part this thermostat opens at a much lower temperature than stock to keep your S54 engine (or Euro S50/S52 engine) running cooler in race applications.
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3/8"/9mm Band Hose Clamp - 50-70mm
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:341684
Part#: 003402ECS06A-12
In Stock
Sale - Save 25% $ 6.99

This product was last offered at the strikethrough price on
06-13-2026

$ 5.24 USD
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Sale - Save 25%
$ 6.99

This product was last offered at the strikethrough price on
06-13-2026

$ 5.24 USD
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Elevate your BMW maintenance with ECS Tuning's 304 stainless steel hose clamps, offering convenience and top-quality performance at an affordable price. Designed with various band widths and German-style T-bolts for adjustable sizing, these hose clamps ensure a secure fit for your specific diameter needs. Skip the dealership wait and excessive pricing; ECS Tuning provides reliable, dealership-quality hose clamps without the premium cost, ensuring your car receives the care it deserves.
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Water Connection Pipe
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:15511839
Part#: 17111707817
In Stock
Sale - Save 20% $ 18.99

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

$ 15.19 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 18.99

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

$ 15.19 USD
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Connects the radiator to the expansion tank

Genuine BMW - Corporate Logo
T#:367933
Part#: 17222245358
In Stock
$ 3.99 USD
Free Shipping on orders $49 and up

Upgrade your BMW's oil or transmission cooling system with the Turner Motorsport Genuine O-Ring, part number 17222245358. This high-quality O-ring is designed to provide a reliable seal, ensuring optimal performance and preventing leaks in your BMW's vital systems. Additionally, it is compatible with MINI applications, where it is commonly used on the end of the parking brake cable.

  • Genuine BMW part for guaranteed quality and compatibility
  • Prevents leaks in the oil and transmission cooling systems
  • Ensures optimal performance of vital components
  • Compatible with MINI applications for versatile use
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Genuine BMW - Corporate Logo
T#:3459
Part#: 11511310640
In Stock
$ 17.99 USD
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This BMW Motorsport part was designed for BMW touring car racing. This reverse thread nut covers the ugly exposed stud when you remove your engine fan and fan clutch. This simple part cleans up the look of an engine with the fan removed. Fits most BMW models. COOL!
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Genuine BMW - Corporate Logo
T#:7432
Part#: 17111712788
In Stock
$ 5.94 USD
Free Shipping on orders $49 and up

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 Parts - Corporate Logo
T#:640140
Part#: 17111712788
Ships in 10 Business Days
$ 3.99 USD
Free Shipping on orders $49 and up
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.

Febi Temperature Sensor
We Price Match - Give Us A Call or Chat!
Febi - Corporate Logo
T#:340711
Part#: 13621433076
Ships in 2 Business Days
$ 17.99

This product was last offered at the strikethrough price on
06-22-2026

$ 16.99 USD
Free Shipping on orders $49 and up
$ 16.99 USD
Free Shipping on orders $49 and up
Monitors coolant / oil temperature

Genuine BMW - Corporate Logo
T#:7436
Part#: 17111712963
In Stock
$ 1.99 USD
Free Shipping on orders $49 and up
The most common use for this rivet is to secure the radiator fan shroud to the radiator. This rivet can also be used on a wide variety of other applications as well.

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.
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URO Parts Thermostat Assembly - 11537509227
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:29466801
Part#: 11537509227
In Stock
$ 41.99 USD
Free Shipping on orders $49 and up
$ 41.99 USD
Free Shipping on orders $49 and up

The thermostat cover in your BMW, made from plastic, is notorious for failing. After years of exposure to hot coolant, the plastic can crack, leading to significant coolant leaks and potential engine overheating.

URO Parts offers a superior solution with their high-quality thermostat cover, designed to surpass the durability of the original factory part. This replacement thermostat comes complete with a gasket for an effortless service.

Features:

Perfect Fit: Guaranteed fitment ensures a seamless replacement process. Optimal Cooling: High-flow OE-style design ensures efficient engine cooling performance. Easy Installation: Manufactured to factory housing dimensions for straightforward bolt-on installation and secure hose connections. Comprehensive Design: Includes ports for temperature sensors where applicable. Superior Materials: Constructed from high-quality alloy or composite materials that resist temperature-induced warping or cracking, preventing coolant leaks. URO Parts, with over 8,000 premium spare parts, specializes in manufacturing precise, durable replacements for factory BMW components. Committed to the highest standards of precision, materials, and workmanship, each part is rigorously tested to deliver the best combination of durability, functionality, and affordability. For reliable replacement parts that offer great value, choose URO Parts.

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Schwaben - Corporate Logo
T#:361021
Part#: DO-3236
In Stock
Sale - Save 25% $ 25.99

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

$ 19.49 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 25.99

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

$ 19.49 USD
Free Shipping on orders $49 and up

Why buy two tools when you can get one that will do many jobs like this open end wrench? It is great for removing and installing the fan clutch and plastic oil filter cap. Also works great for removing and installing the VAN0S solenoid on M50 engine family. Use the same tools the Turner Motorsport tech's use!

Features:

  • Made of Chrome Vanadium Steel for strength
  • 32/36mm open end sides

 

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Genuine BMW - Corporate Logo
T#:11526
Part#: 82142209769
In Stock
$ 10.60

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

$ 10.57 USD
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$ 10.57 USD
Free Shipping on orders $49 and up
This 1 liter bottle is perfect for topping of the coolant in your BMW. This is The use of Original BMW Anti-Freeze/Coolant will ensure sufficient cooling in summer and protection against freeze-ups in winter. BMW Antifreeze/Coolant will also guard your vehicle's various engine components against corrosion. BMW Anti-Freeze/ Coolant will prevent excessive silicate gel precipitation, which may cause plugging of the cooling system and lead to more extensive repairs.
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