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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AAF Transmission Crossmembers 5-Speed - E46 Non-M
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Fits ZF and Getrag Transmissions. Non-M models Only
Advanced Auto Fabrication - Corporate Logo
T#:7608860
Part#: 116110
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$ 190.00 USD
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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. Ideal for the SE46 racing series, the AAF E46 5-speed Transmission Crossmember is a heavy-duty and worthwhile upgrade. The OEM thin cast aluminum cross member has been known to fail in multiple different ways. When using stiff engine and transmission mounts, the cross member can crack out and break around these mounting points. The cross member can also break from the high amounts of load transferred through the drive train. While chassis flex from hard cornering is being applied through the engine and transmission from the front cross member, this load is sent from the transmission back into the chassis at the transmission cross member. This is simply too much stress for the OEM cross member to hold up to under the extreme punishment of road racing. The AAF E46 Transmission Cross Member is completely constructed of 1/4' thick heavy-duty aluminum plate. It is designed specifically to cope with hours of endurance racing.
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Condor Speed Shop V2 Fan Mounting Brackets For 16" SPAL Fans ...
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Condor Speed Shop - Corporate Logo
T#:577556
Part#: SPALM
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Stainless steel brackets for mounting a 16" SPAL fan on an OEM or aftermarket BMW radiator. The fan can be mounted on either side of the radiator. All mounting hardware is included. Fitment: e30, E36, E46
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OEM Rein Expansion Tank Hose - E46 3-Series
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Rein - Corporate Logo
T#:363453
Part#: 64218376153
In Stock
$ 82.99

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$ 34.99 USD
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Expansion tank to heater core

BMW S54 Swap High-Performance Radiator - E36/E46
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CSF - Corporate Logo
T#:15180812
Part#: 7211
EO#: D-802-19
In Stock
$ 599.00 USD
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The S54 is arguably one of the greatest BMW motors of all time. Power delivery, balance, and sound are top notch. While it doesn’t compare in power potential to newer turbo powered inline 6 motors, many enthusiasts still love and crave the NA power delivery that BMW was and still is famous for. Despite not being the most powerful option, the S54 Swap has become increasingly popular in the BMW community for the E36 Chassis.
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OEM Rein Lower Radiator Hose - E46 M3
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Rein - Corporate Logo
T#:2674
Part#: 11537830715
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$ 23.99 USD
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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure. This hose replaces the lower radiator hose that connects the radiator to the thermostat housing.

This Lower Radiator Hose fits the following BMWs:
2001-2006 E46 3 Series M3, M3 Convertible

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Bav Auto Radiator Hose - Lower - E46 M52 M54
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Bremmen Parts - Corporate Logo
T#:640203
Part#: 11531436408
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$ 31.20 USD
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OEM Replacement Lower Radiator Hose for E46 3 series (Non-M3). We recommend replacing the Coolant Temperature Sensor while replacing this hose as the original sensor is often damaged while trying to remove it from the old hose. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.
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Powerflex BMW E30 - E36 - E46 Offset Lower Radiator Mounts
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Powerflex - Corporate Logo
T#:34315165
Part#: PFF5-4652H
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$ 42.99 USD
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T

The BMW E30 / E36 / E46 Offset Lower Radiator Mounts are designed to provide enhanced support and positioning for the radiator in BMW models, specifically the E30, E36, and E46. These mounts are a practical upgrade for vehicles that require extra clearance, especially when using aftermarket or larger radiators in performance builds.

Key Features:

  1. Offset Design for Increased Clearance:

    • The offset configuration of these mounts offers additional room, making them ideal for accommodating larger radiators or custom cooling setups. This ensures proper fitment, especially in high-performance or modified vehicles.
  2. Stable and Secure Mounting:

    • These mounts provide firm support to keep the radiator securely in place, preventing unwanted movement or vibration, which is crucial for maintaining the cooling system’s efficiency during intense driving conditions.
  3. Durability and Heat Resistance:

    • Built from high-quality, heat-resistant materials, these mounts are designed to withstand the rigors of both daily driving and track use. They ensure long-lasting performance even under high temperatures and stress.
  4. Optimized Cooling Performance:

    • By ensuring the radiator is properly aligned and secured, these mounts help maximize the cooling system's performance. Proper positioning allows for efficient airflow through the radiator, which is vital for preventing overheating during demanding driving situations.
  5. Easy Installation:

    • These offset radiator mounts are designed as a direct-fit replacement, making installation simple and straightforward. They are compatible with the BMW E30, E36, and E46, allowing for an easy upgrade to support larger or performance-focused radiators.
  6. Perfect for Modified and Performance Builds:

    • Whether you're upgrading to a high-capacity radiator or modifying your vehicle for improved performance, these mounts offer the extra flexibility and stability needed for customized setups.

Benefits of Upgrading or Replacing:

  • Extra Clearance for Larger Radiators: The offset design allows for better fitment, especially when upgrading to a larger or aftermarket radiator.
  • Prevents Vibration and Damage: These mounts reduce the risk of damage caused by vibration or radiator movement, ensuring longer-lasting performance.
  • Enhanced Cooling Efficiency: Properly securing the radiator ensures that it can work at peak efficiency, leading to better cooling performance during high-demand driving.

In summary, the BMW E30 / E36 / E46 Offset Lower Radiator Mounts are an excellent choice for enthusiasts looking to upgrade their cooling system or accommodate a larger radiator. Their durable construction, ease of installation, and offset design make them a valuable addition for performance builds or maintaining cooling system reliability in modified BMWs.

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Schwaben Locking Hose Clamp Pliers
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Schwaben - Corporate Logo
T#:377131
Part#: 004170SCH01A
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$ 28.79 USD
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These pliers feature a spring loaded clamp with a 24" cable and will lock onto the clamp and hold open for easy removal. These pliers are designed to remove metal or plastic self-tightening hose clamps with diameters from 11/16" to 2-1/2" ( 18 to 54mm).
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Red Line Supercool Performance Coolant - Concentrate - 1 Gallon ...
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Redline - Corporate Logo
T#:640437
Part#: 81205
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$ 68.99 USD
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Red Line SuperCool Concentrate fortified with WaterWetter is a concentrated antifreeze/coolant designed to maximize the performance of your cooling system with superior protection against cavitation corrosion/erosion. Using SuperCool Concentrate diluted with distilled water protects the entire cooling system keeping new components like new for 5 years/150,000 miles and prevents further damage to older components. Red Line’s proprietary coolant additive formula enhances the fluid’s ability to transfer heat, reducing operating temperatures by up to 20*F and prolonging the life of the entire cooling system. Red Line's SuperCool is an OAT coolant that is a Nitrate and Silicate Free product with its own proprietary corrosion technology to offer superior protection for aluminum engines found in all European vehicles, performance vehicles, as well as other applications. SuperCool will not void the factory warranty either. It can be used to top off the existing coolant of any BMW and will not cause any ill-effects on the cooling system because it is silicate and nitrate free. It is still better to flush it out and switch completely to SuperCool to get all the full benefits of the product in performance and protection.
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BMW E46 AAF Aluminum Radiator Mounting Kit
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Advanced Auto Fabrication - Corporate Logo
T#:7608839
Part#: 11641
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$ 189.00 USD
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BMW E46 AAF Aluminum Radiator Mounting Kit provides a robust solution for mounting an aluminum radiator into the BMW E46 chassis without relying on the stock plastic mounts. Developed by Advanced Auto Fabrication, a company renowned for their expertise in producing high-performance race car components, this kit reflects their extensive knowledge and dedication to BMW race car design.

The mounting kit is designed to replace the stock mounting system and is compatible with lightweight aftermarket fans, as the stock electric fan cannot be used. Please note that this kit does not fit M3 models.

  • Durable Construction: Made from high-quality aluminum for strength and longevity.
  • Enhanced Cooling Efficiency: Allows for the use of aftermarket fans for improved cooling performance.
  • Race-Ready Design: Reflects Advanced Auto Fabrication's expertise in BMW race car components.
  • No Stock Plastic Mounts: Provides a more reliable and robust mounting solution than the factory system.
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BMW E46 M3 S54 3.2L Water Pump
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URO - Corporate Logo
T#:378573
Part#: 11517838159
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$ 105.79 USD
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Includes sealing gaskets
E46 M3 Radiator Hose - Upper And Lower
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Rein - Corporate Logo
T#:20617632
Part#: 11537830715KT
In Stock
$ 53.98 USD
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Both thermostat housing hoses to replace your worn out rubber and brittle plastic connections.

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.

Comes with both upper and lower thermostat hoses: 11537830715 Lower + 11537830716 Upper

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Bav Auto Fan Pulley Holder
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Bav Auto Tools - Corporate Logo
T#:580358
Part#: B8800031
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Used to remove your fan clutch
BMW E46 Cooling Fan Shroud
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URO - Corporate Logo
T#:377316
Part#: 17111436259
In Stock
$ 52.89 USD
$ 52.89 USD

BMW E46 Cooling Fan Shroud is essential for maximizing airflow through your radiator, ensuring optimal engine cooling. This shroud is designed to create the most efficient pull of air, keeping your engine temperature under control, especially during demanding driving conditions.

  • Enhanced Cooling Efficiency: Maximizes airflow through the radiator, ensuring your engine stays cool.
  • High-Quality Construction: Manufactured by URO Parts, a leading brand known for producing reliable and durable replacement components.
  • Precision Fit: Designed specifically for the BMW E46, ensuring a perfect fit and easy installation.
  • ISO 9000 Certified: Built to meet ISO 9000 certification standards for long-lasting performance and reliability.
  • Trusted by Enthusiasts: URO Parts is a trusted name in the automotive industry, offering components that deliver OEM-like performance.

Upgrade your BMW E46 with this Cooling Fan Shroud from Turner Motorsport to enhance your vehicle’s cooling system and maintain peak performance.

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Thermostat With Housing
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Bremmen Parts - Corporate Logo
T#:26494584
Part#: 11537509227
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Mishimoto Universal Curved Blade Electrical Fan - 16"
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Mishimoto - Corporate Logo
T#:637390
Part#: MMFAN-16C
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$ 117.99 USD
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This curved blade fan can be used as an upgrade to the OEM fan for more efficient cooling or fitment issues with aftermarket products. With its slim design, the fan can easily be installed flush against a radiator. For universal installation, use Mishimoto universal fan mount kit, T#363171. Features: High-flow curved blade fan provides 1850 cfm of airflow Universal fitment Compact design with a diameter of 16" and an overall thickness of only 3.2" provides increased engine bay space Mishimoto Lifetime Warranty WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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BMW Universal Oil Cooler - 19 Row - Black
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Mishimoto - Corporate Logo
T#:8933504
Part#: MMOCULBK
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$ 536.99 USD
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Ensure your BMW's engine performs at its peak with the installation of this highly efficient oil cooler from Mishimoto. Even in ideal driving conditions, elevated oil temperatures can lead to decreased pressure and compromised engine lubrication. This comprehensive kit includes four feet of stainless braided line, adapter fittings, and an oil filter sandwich adapter, all meticulously designed to reduce oil temperatures and uphold optimal driving circumstances.

  • Rows: 19
  • Overall Dimensions: 13" x 5.5" x 2"
  • Core Dimensions: 11.25" x 5.5" x 2"
  • Braided Hoses: 4ft .75 inch & 4ft 9 inch
  • Braided Hose Fittings: -10AN
  • Sandwich Plate Fittings: -10AN

Please take into consideration that this product may be subject to Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968). Proposition 65 is a California law that applies to companies selling products in California and necessitates the disclosure of chemicals known to cause cancer, birth defects, or other reproductive harm when present at levels exceeding specified thresholds. For further information regarding California Prop 65 warnings, visit www.P65Warnings.ca.gov.

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Genuine BMW Heater Hose - E46 M3
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Genuine BMW - Corporate Logo
T#:14119
Part#: 64216902680
In Stock
1% off MSRP $ 73.99

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$ 72.99 USD
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1% off MSRP
$ 73.99

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

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Genuine BMW Hose F Radiator And Engine Return
This item fits the following BMW Chassis:
E46 M3,E46


AAF Low Temp Thermostat Kit - Full Kit - E46
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Advanced Auto Fabrication - Corporate Logo
T#:7624630
Part#: 116211
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$ 175.00 USD
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Since 2010, Advanced Auto Fabrication has been producing and developing both parts and full fledged race cars. Their knowledge base covers a wide range of vehicles both domestic and imported. In the specific case of BMW, the team at AAF has a particular affinity for building and designing components for BMW race cars. The factory M54 thermostat is electronically controlled to keep the engine running between 80-103°C, whereas race cars like to maintain 80°C or less for maximum power. Additionally, the mechanical failsafe doesn’t open up until the coolant temperature reaches 110°C, or 230°F, which is about the point when most race cars are turned off and parked which is no good for the motor! The AAF E46 M54 Low Temp Thermostat Kit is designed to give the control of proper engine operating temperature back by replacing the stock electronic thermostat with a manual unit. This allows the engine to run at the proper, and much safer, operating temperature, improving engine longevity, reduces stress from high-temp. operation, reduces heat soak, and increases power! Full Kit Contents: Thermostat housing Thermostat housing plate Thermostat install hardware sealant
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OEM Mahle-Behr Thermostat - E39 E46 E60 E53 Z3 Z4 with M54, M52TU eng...
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Mahle-Behr - Corporate Logo
T#:341098
Part#: 11537509227
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$ 103.81 USD
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Replacement stock MAP thermostat with plastic housing and gasket for E46, E39, E60, X5, Z4 - M54 engine, M52TU engine. Your car may still operate fine according the instrument display but the electrically-operated thermostat may be going bad. This new thermostat includes the thermostat gasket, ready to install in your BMW.

Hailing from Stuttgart, Mahle-Behr specializes in automotive cooling systems. From air conditioning to engine cooling M-B has you covered with OE-quality replacement parts.

Applications:
1999-2003 E39 528i, 525i, 530i sedan, touring wagon (M52TU engine, M54 engine)
1999-2005 E46 323, 328, 325, 330 sedan, coupe, cabrio, touring wagon (M52TU engine, M54 engine)
2004-2005 E60 525i, 530i sedan, touring wagon (M54 engine)
2001-2006 E53 X5 3.0 (M54 engine)
2004-2006 E83 X3 2.5i X3 3.0i (M54 engine)
1999-2002 Z3 2.3. Z3 2.5i, 2.8 Z3 3.0i (M54 engine)
2003-2005 Z4 2.5i, Z4 3.0 (M54 engine)

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Universal 16" Electric puller Fan - Black
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Spal - Corporate Logo
T#:598821
Part#: 30101516
Ships in 2 Business Days
11% off MSRP $ 168.99

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$ 149.99 USD
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$ 168.99

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$ 149.99 USD
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1469 CFM. High performance puller fan with straight blades. This is a universal fan for applications that require more air flow or for engine compartments that have tight tolerances such as an aftermarket turbo set up that needs more clearance. This fan is universal and you must make it fit your application. It is not a direct bolt on. Made in Italy. Size: 16.3in x 15.75in x 2.48in Airflow (CFM): 1469
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BMW Water Pump - Remanufactured - 11517527799
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URO - Corporate Logo
T#:372932
Part#: 11517527799
In Stock
$ 42.99 USD
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Features a metal impeller for reliability
Genuine BMW Radiator Hose - Upper - E46 M54 M55
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Genuine BMW - Corporate Logo
T#:360755
Part#: 17127510952
In Stock
7% off MSRP $ 104.65

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

$ 97.39 USD
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7% off MSRP
$ 104.65

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OEM Replacement Upper Radiator Hose for E46 3 series (Not M3).

This lower 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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OEM Nissens Radiator - Automatic - E46, Z4
For vehicles with automatic transmission only
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Nissens - Corporate Logo
T#:362222
Part#: 17119071519
In Stock
$ 173.39

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$ 165.05 USD
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$ 165.05 USD
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The cooling system is a weak point on any E46. Many cars develop issues in as few as 50,000 miles.

Overheating an inline 6 engine almost always results in large repair bill, and sometimes a warped cylinder head.

Replace yours with a high-quality OEM Nissens radiator to prevent further issues and potential overheating.

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70-78mm - T-Bolt Hose Clamp - Priced each
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ECS - Corporate Logo
T#:380416
Part#: 003402ECS07A-03
In Stock
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$ 23.99 USD
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Ensure a tight and leak-free seal in your BMW's cooling, vacuum, or intake systems by installing a new adjustable hose clamp. Over time, clamps can deform or lose their tightness due to aging or frequent removal, potentially causing leaks in your coolant or vacuum hoses. Avoid the risk of leaks by replacing old clamps with new hardware, offering peace of mind against coolant and vacuum system issues.

Key benefits of the adjustable hose clamp include:

  • Maintaining a secure and leak-free seal in your BMW's systems.
  • Preventing coolant or vacuum leaks that can affect performance.
  • Adjustable size from 70mm to 78mm for versatile applications.

Upgrade your hose clamps to ensure optimal performance and reliability in your BMW's systems.

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SPAL Fan Mounting Kit - E30 E36 E46
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Spal - Corporate Logo
T#:586078
Part#: 30130011KT
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$ 51.99 USD
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Racing Thermostat - 70C
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Mishimoto - Corporate Logo
T#:640347
Part#: MMTS-E46-99V2
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$ 135.99 USD
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$ 135.99 USD
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Genuine BMW Thermostat - 80*C - E46 M3, MZ3 S54, Z4 M
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Genuine BMW - Corporate Logo
T#:12502
Part#: 11531318274
In Stock
16% off MSRP $ 147.44

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$ 123.15 USD
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16% off MSRP
$ 147.44

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$ 123.15 USD
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GENUINE BMW THERMOSTAT - E46 M3, MZ3 (S54), MZ4. This is just the thermostat itself and does not include the housing o-ring or any others that are advised for replacement. See thermostat kit or our water pump kit for a complete package.

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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Radiator Pressure Tester Kit
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Schwaben - Corporate Logo
T#:391482
Part#: 014710SCH01A
Ships on Jul 30, 2026
Sale - Save 25% $ 205.99

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$ 154.49 USD
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Are you refreshing your coolant system or having issues with coolant loss? An easy way to test your system for leaks and ensure you're able to maintain pressure without coolant loss is the Schwaben Cooling System Pressure Tester Kit.
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ECS Silicone Radiator Hose Kit - M52 M54
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ECS - Corporate Logo
T#:639004
Part#: 006205LA01
In Stock
Sale - Save 25% $ 160.99

This product was last offered at the strikethrough price on
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$ 120.74 USD
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$ 160.99

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Unlike factory rubber hoses, silicone can withstand higher temperatures and pressures with minimal wear. Rubber will wear out and weaken so don't let it bite you when it counts! Silicone has been proven during extreme racing conditions and won't be the weak link that ruins your day. This kit is specifically designed for the enthusiast that wants uprated cooling hoses, but also wants to address the heat-cycled plastic connectors and O-rings that are also prone to failure in higher mileage or older vehicles.Kit includes a brand new pair of connectors. This E46 NM ECS silicone hose set replaces two hoses - Need new connectors included, check out (T#638748) Upper Radiator Hose - 17127510952 Lower Radiator Hose - 11531436408
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Genuine BMW Radiator Hose - Lower - E46 M54 M52
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Genuine BMW - Corporate Logo
T#:360669
Part#: 11531436408
In Stock
$ 57.99 USD
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BMW S54 Swap Race-Spec Oil Cooler - E36/E46
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2X Entries For Our G87 M2 Sweepstakes!
CSF - Corporate Logo
T#:15180814
Part#: 8240
In Stock
$ 519.00 USD
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$ 519.00 USD
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The ONLY choice for your S54 swapped E36 or E46. The new CSF S54 Swap Race Spec Oil Cooler is shorter on the right hand side allowing owners to run the A/C lines in the OEM path. Even though the #8240 is slightly smaller than the #8032, you can expect similar performance levels as they both feature a dual pass design with 8 cooling rows and are the same turbulated heavy-duty bar/plate construction.
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Expansion Tank Hose
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Bremmen Parts - Corporate Logo
T#:27572101
Part#: 64218376153
In Stock
Sale - Save 20% $ 47.99

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

$ 38.34 USD
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Sale - Save 20%
$ 47.99

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

$ 38.34 USD
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BMW & MINI Universal Oil Cooler - 10 Row
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Mishimoto - Corporate Logo
T#:29002063
Part#: MMOC10
In Stock
$ 126.99 USD
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BMW & MINI Universal Oil Cooler - 10 Row is a versatile cooling solution designed to enhance the performance and reliability of BMW and MINI vehicles. This high-quality oil cooler provides efficient cooling for the engine oil, ensuring optimal operating temperatures and extending the life of vital engine components.

Crafted with precision engineering and durable materials, the BMW & MINI Universal Oil Cooler - 10 Row is compatible with a wide range of BMW and MINI models, offering versatility and ease of installation. It effectively dissipates heat from the engine oil, reducing the risk of overheating and engine damage.

  • Enhances performance and reliability of BMW and MINI vehicles
  • Efficient cooling for engine oil, ensuring optimal operating temperatures
  • Extends the life of vital engine components
  • Compatible with a wide range of BMW and MINI models
  • Versatile and easy to install
  • Crafted with precision engineering and durable materials

Investing in the BMW & MINI Universal Oil Cooler - 10 Row is a smart choice for BMW and MINI owners looking to improve their vehicle's performance and longevity.

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Radiator Hose - Lower
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Bremmen Parts - Corporate Logo
T#:38655188
Part#: 11537830715
In Stock
Sale - Save 17% $ 26.99

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

$ 22.53 USD
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Sale - Save 17%
$ 26.99

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

$ 22.53 USD
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Universal Oil Cooler Black - 10 Row
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Mishimoto - Corporate Logo
T#:31291020
Part#: MMOC10BK
In Stock
$ 126.99 USD
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Universal Oil Cooler Black - 10 Row is engineered to maintain optimal oil temperatures and ensure peak engine performance under various driving conditions. This high-performance oil cooler effectively reduces oil temperatures, preventing a drop in pressure and maintaining proper engine lubrication. Featuring a robust 10-row design, it offers superior cooling efficiency compared to standard coolers.

  • Efficient Cooling: The 10-row design enhances cooling capacity to manage high oil temperatures effectively.
  • Durable Construction: Black finish provides durability and resistance to environmental factors.
  • Optimized Performance: Helps prevent a drop in oil pressure and maintains proper engine lubrication.
  • Versatile Fitment: Universal design suitable for various vehicles and applications.
  • Compact Size: Overall dimensions of 12.95" x 3.8" x 1.97" and core dimensions of 11" x 2.76" x 1.97" ensure a good fit in most engine bays.

WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to all companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.

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Water Pump and Seal - Saleri
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Saleri - Corporate Logo
T#:581204
Part#: PA659
Ships in 1 Business Day
$ 60.99 USD
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Trunk Tool Kit Water Pump Pliers - E36 E46 E30 E39
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Genuine BMW - Corporate Logo
T#:11239
Part#: 71111179522
Ships in 1-2 days
4% off MSRP $ 47.99

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

$ 45.99 USD
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4% off MSRP
$ 47.99

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

$ 45.99 USD
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Missing a tool from your trunk mounted tool kit? Replace your missing water pump pliers with this Genuine BMW part. Having a complete tool kit is handy for quick repairs or it can save you in case of roadside failures. Also a complete tool kitis must when selling a car. If the tool kit is missing parts, what else has been neglected on the car?

This item fits the following BMWs:
1970-1976 2002 BMW 1600 2002 2002tii
1977-1983 E21 BMW 320i
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1992-1998 E36 BMW 318i 318is 318ti 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
1976-1978 E12 BMW 530i
1982-1988 E28 BMW 528e
1989-1995 E34 BMW 525i 530i 535i 540i M5
1997-2003 E39 BMW 525i 528i 530i 540i M5
1988-1994 E32 BMW 735i 735il 740i 740il 750il
1995-2001 E38 BMW 740i 740il 750il
1990-1999 E31 BMW 840i 840ci 850i 850ci 850csi
1996-2000 Z3 BMW M Roadster M Coupe
2000-2003 E52 BMW Z8 Roadster
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Genuine BMW Lower Sealing Gasket
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Genuine BMW - Corporate Logo
T#:7408
Part#: 17111436245
Ships in 1-2 days
3% off MSRP $ 36.99

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

$ 35.99 USD
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3% off MSRP
$ 36.99

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

$ 35.99 USD
Free Shipping on orders $49 and up


Genuine BMW Sealing Lower -
This item fits the following BMW Chassis:
E46,E83 X3,E85,E86

Fits BMW Engines including:
M52,M54,M56,N52


Radiator Hose - Upper
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Bremmen Parts - Corporate Logo
T#:38621426
Part#: 11537830716
In Stock
Sale - Save 22% $ 25.99

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

$ 20.39 USD
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Sale - Save 22%
$ 25.99

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

$ 20.39 USD
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Genuine BMW Expansion Tank Hose - E46 M54 M57
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Genuine BMW - Corporate Logo
T#:12609
Part#: 64218376153
In Stock
13% off MSRP $ 79.29

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

$ 69.10 USD
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13% off MSRP
$ 79.29

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

$ 69.10 USD
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BMW Hose F Radiator And Expansion Tank -
This item fits the following BMW Chassis:
E46

URO Auxiliary Cooling Fan Assembly
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URO - Corporate Logo
T#:377306
Part#: 17117561757
In Stock
$ 217.99 USD
$ 217.99 USD
The auxiliary fan in your vehicle serves an extremely important role. When your car reaches temperatures that may be hazardous to your engine, the auxiliary fan moves air through the radiator to provide better cooling. Usually activated during times of stationary vehicle operation, it supplements the air usually driven through the radiator by driving down the road. If your vehicle is getting too hot during traffic or at stop lights, your auxiliary fans are probably faulty. Replace yours with this piece from ACM to restore the factory cooling in your vehicle and prevent catastrophic damage to your engine. Even if your fans are still operational but the blades are damaged or cracked, replacement is the only solution.
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Hella Automatic Radiator -- E46 323/325/328/330, MZ4 Manual 6 sp. ...
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Mahle-Behr - Corporate Logo
T#:341065
Part#: 17119071519
In Stock
$ 211.99 USD
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$ 211.99 USD
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This is a Hella brand (OEM supplier to BMW) replacement radiator for all 1999-2006 E46 3 series (non-M), including 323i, 323Ci, 328i, 328Ci, 325i, 325Ci, 330i, 330Ci, and Z4 2.5 and 3.0. Compare to BMW list price of $318! Save big, while still getting the highest quality radiator available for your BMW.

Hella is a premium manufacturer that supplies automotive parts to numerous car brands across the world. Everything from electrical to mechanical genuine parts have been made and supplied directly to BMW before the vehicles ever leave the production floor. Their high quality, long lasting parts have made them a trusted brand chosen to help keep your BMW on the road for many years to come.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This radiator fits the follow BMWs::
Only for Automatic Transmission 
1999-2006 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi - Not for cars with M56 engine

2006-2008 E85 E86 Z4 BMW Z4 M Coupe Z4 M Roadster

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Rein Coolant Expansion Tank - E46, E53, E83
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Rein - Corporate Logo
T#:402141
Part#: 17117573781
In Stock
$ 76.39 USD
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$ 76.39 USD
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Includes cap and level sensor

URO - Heater Inlet Pipe - E46, Z3, E39
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URO - Corporate Logo
T#:34080697
Part#: 11531705210
Ships in 1 Business Day
$ 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.

Auxiliary Cooling Fan Assembly - 17117561757
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Bremmen Parts - Corporate Logo
T#:36913373
Part#: 17117561757
In Stock
Sale - Save 15% $ 194.99

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

$ 165.59 USD
Sale - Save 15%
$ 194.99

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

$ 165.59 USD

The auxiliary fan in your vehicle serves an extremely important role. When your car reaches temperatures that may be hazardous to your engine, the auxiliary fan moves air through the radiator to provide better cooling. Usually activated during times of stationary vehicle operation, it supplements the air usually driven through the radiator by driving down the road.

If your vehicle is getting too hot during traffic or at stop lights, your auxiliary fans are probably faulty. Replace yours with this piece from Bremmen Parts to restore the factory cooling in your vehicle and prevent catastrophic damage to your engine. Even if your fans are still operational but the blades are damaged or cracked, replacement is the only solution.

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Red Line SuperCool Performance Coolant - Pre-Mixed - 1 Gallon ...
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Redline - Corporate Logo
T#:640436
Part#: 81215
Ships on Aug 17, 2026
$ 54.99 USD
Free Shipping on orders $49 and up
Red Line SuperCool Performance Coolant fortified with WaterWetter is a 50/50 prediluted antifreeze/coolant designed to maximize the performance of your cooling system with superior protection against cavitation corrosion/erosion. Using 100% SuperCool Performance protects the entire cooling system, keeping new components like new for 5 years/150,000 miles and prevents further damage to older components. Red Line’s proprietary coolant additive formula enhances the fluid’s ability to transfer heat, reducing operating temperatures by up to 20*F and prolonging the life of the entire cooling system. Red Line's SuperCool is an OAT coolant that is a Nitrate and Silicate Free product with its own proprietary corrosion technology to offer superior protection for aluminum engines found in all European vehicles, performance vehicles, as well as other applications. SuperCool will not void the factory warranty either. It can be used to top off the existing coolant of any BMW and will not cause any ill-effects on the cooling system because it is silicate and nitrate free. It is still better to flush it out and switch completely to SuperCool to get all the full benefits of the product in performance and protection.
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URO Coolant Expansion Tank - BMW E46 M3
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URO - Corporate Logo
T#:48608189
Part#: 17112283344
Ships in 1 Business Day
New Item
$ 155.99 USD
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​This radiator coolant reservoir/expansion tank for E46 M3 is a common failure item as the plastic weakens and cracks, causing coolant leaks. If your E46 M3 has over 80k miles and still has the original expansion tank, we highly recommend replacing it during your next major service.
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DO88 Racing Oil Cooler - E46 M3
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DO88 - Corporate Logo
T#:13891842
Part#: OC150
In Stock at Vendor
$ 749.99 USD
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With a 185% bigger core volume, 50% bigger cooling area, and a 79% higher oil volume, this oil cooler compensates on no fronts. Built for the track but just as capable on the road, DO88's upgraded oil cooler for the E46 M3 gives you maximum performance and compromises nowhere.
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Spal Thermo-Switch - 185 Degree
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Spal - Corporate Logo
T#:25507142
Part#: SPL185TS
Back Ordered
$ 44.99 USD
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This part replaces faulty thermo-switches found in Spal electric fan conversion kits.