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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Mishimoto - Corporate Logo
T#:363510
Part#: MMFANCNTLUPROBE
In Stock
9% off MSRP $ 98.00

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

$ 88.99 USD
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9% off MSRP
$ 98.00

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

$ 88.99 USD
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Take Control of Your Engine Cooling Fan with Mishimoto's Manual Fan Controller Kit

Ensure your engine runs at the perfect temperature by using this versatile manual fan controller system, compatible with all 12v fan-equipped vehicles. With adjustable activation temperature settings ranging from 150°F to 240°F, you have precise control over your engine's cooling fan. The kit includes a probe-style temperature sensor and a generous 7 feet of wire, making it suitable for installation in vehicles of various sizes.

For added convenience, the system is equipped with a built-in A/C override feature, ensuring your cooling system works seamlessly. It's designed to work with one or two electric fans drawing a combined 25 amps or less. The package includes all the essential wiring connectors and hardware needed for a trouble-free installation.

With a lifetime warranty from Mishimoto, you can trust in the quality and durability of this manual fan controller kit.

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 warnings, visit www.P65Warnings.ca.gov.

WARNING! Prog 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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URO Radiator Fan Clutch
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:362006
Part#: 11527505302
In Stock
$ 72.99 USD
Free Shipping
$ 72.99 USD
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Common source of engine overheating
Genuine BMW - Corporate Logo
T#:360688
Part#: 11537502525
In Stock
$ 90.99 USD
Free Shipping
$ 90.99 USD
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Replace your cracked/broken coolant pipe with this Genuine BMW pipe to ensure long term reliability and perfect fitment.

Spal - Corporate Logo
T#:598892
Part#: 185FH
Back Ordered
11% off MSRP $ 193.99

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

$ 171.99 USD
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11% off MSRP
$ 193.99

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

$ 171.99 USD
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SPAL® electric fan wiring harness kits are a must-have when installing electric fans. Designed to safely integrate with OEM wiring, the SPAL kits feature a waterproof relay along with printed wires which aid in installation. The wiring kits also feature stainless steel switches with optional switched override capability, fuse holder, and wiring connectors. Features: Makes installation of your new fan a breeze Designed to safely integrate with OEM wiring Feature a waterproof 10/40 amp relay with printed wires for easy installation Kit features a 3/8” NPT thermos-switch and a 3/8” to ½” NPT adapter Harness is designed for 12V systems only
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Advanced Auto Fabrication - Corporate Logo
T#:7624632
Part#: 116211.2
Ships in 1-2 days
$ 85.00 USD
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$ 85.00 USD
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BMW E46 M54 AAF Low Temp Thermostat Kit - Partial is an essential upgrade for enthusiasts looking to optimize engine performance and reliability. Developed by Advanced Auto Fabrication (AAF), this kit addresses the limitations of the factory M54 thermostat, which maintains a temperature range of 80-103°C and opens the mechanical failsafe at 110°C. For race conditions where maintaining a lower temperature is crucial, this kit replaces the stock electronic thermostat with a manual unit, allowing the engine to run at a safer and more efficient temperature. This upgrade not only enhances engine longevity but also reduces stress from high-temperature operation, minimizes heat soak, and increases power.

  • Optimal Temperature Control: Replaces the factory thermostat for improved engine temperature management.
  • Enhanced Engine Longevity: Operates at safer temperatures, reducing stress and extending engine life.
  • Increased Power: Lower operating temperatures can lead to better engine performance.
  • Reduced Heat Soak: Helps prevent overheating and ensures efficient cooling.
  • Improved Reliability: Manual thermostat unit offers more consistent performance in racing conditions.

Partial Kit Contents:

  • Thermostat housing plate
  • Thermostat
  • Installation hardware
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Genuine BMW - Corporate Logo
T#:360752
Part#: 17117573781
In Stock
$ 173.21 USD
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$ 173.21 USD
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We have found that the expansion tanks should be replaced based on age as well as condition. Expansion tanks seem to have a lifespan of less than six years before they show signs of fatigue and wear. Pre-emptively replacing the expansion tank as part of an overall maintenance plan can prevent you from getting stranded from a sudden failure later on.
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Genuine BMW - Corporate Logo
T#:13185
Part#: 17112283344
In Stock
7% off MSRP $ 215.23

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

$ 199.98 USD
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7% off MSRP
$ 215.23

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

$ 199.98 USD
Free Shipping
This radiator coolant reservoir/expansion tank for E46 M3 is a common failure item as the plastic weakens over time and stress crack will lead to coolant leaks. If your car has over 80k miles and hasn't had one of these replaced, we highly recommend it during your next major service. We have found that the aftermarket coolant reservoirs fail easier than the original BMW piece so we only offer the BMW type on this part.

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:
2001-2006 E46 BMW M3
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Spal - Corporate Logo
T#:583648
Part#: 30100400
In Stock
$ 111.99 USD
Free Shipping
$ 111.99 USD
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Low profile design makes an easy fit when clearance is an issue. 1300 CFM.

Mishimoto - Corporate Logo
T#:363170
Part#: MMFAN16
In Stock
$ 115.99 USD
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$ 115.99 USD
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Mahle-Behr - Corporate Logo
T#:340540
Part#: 11527831619
Ships in 1 Business Day
$ 298.99

This product was last offered at the strikethrough price on
08-17-2026

$ 256.99 USD
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$ 256.99 USD
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This OEM Hella/Mahle-Behr engine fan clutch fits BMW E46 M3, Z3 M Roadster, M Coupe 2001-2002, E34 535i & M5, and E32 735i 735il. Made to the same or higher standards of quality as the genuine part, ensuring proper fan control and cooling. Failed fan clutches can result in overheating due to the fan not spinning fast enough to deal with excess heat or can cause poor engine performance when a clutch has locked up causing the fan to be fully engaged permanently.

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 item fits the following BMWs:
2001-2006 E46 BMW M3
1989-1993 E34 BMW 535i M5
1988-1992 E32 BMW 735i 735il
2001-2002 Z3 BMW M Roadster M Roadster

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Mahle-Behr - Corporate Logo
T#:340539
Part#: 11527505302
Ships in 2 Business Days
$ 238.99

This product was last offered at the strikethrough price on
08-26-2026

$ 215.99 USD
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$ 215.99 USD
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This clutch engages the belt-driven engine fan when the engine is warm/hot, and dis-engages the fan when cold/cool. These commonly fail, causing the engine fan to not spin fast enough (or at all) when your car is stopped in traffic, causing engine to overheat.

This fan clutch fits many 6 cylinder BMWs, including the following::

1992-1998  E36 BMW  323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005  E46 BMW  323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi - Automatic Transmission
1991-1995  E34 BMW  525i 535i M5
1997-2003  E39 BMW  525i 528i 530i
1988-1994  E32 BMW  735i 735il
1997-2002  Z3 BMW  Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
1998-2000  Z3 BMW  M Roadster M Coupe (s52)
2000-2006  E53 BMW  X5 3.0i
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Genuine BMW - Corporate Logo
T#:360689
Part#: 11537509227
In Stock
Sale - Save 8% $ 169.69

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

$ 156.96 USD
Free Shipping
Sale - Save 8%
$ 169.69

This product was last offered at the strikethrough price on
08-26-2026

$ 156.96 USD
Free Shipping


Mishimoto - Corporate Logo
T#:637390
Part#: MMFAN-16C
In Stock
$ 117.99 USD
Free Shipping
$ 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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AAF Transmission Crossmembers 5-Speed - E46 Non-M
Fits ZF and Getrag Transmissions. Non-M models Only
Advanced Auto Fabrication - Corporate Logo
T#:7608860
Part#: 116110
In Stock at Vendor
$ 190.00 USD
Free Shipping
$ 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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Genuine BMW - Corporate Logo
T#:1030
Part#: 11517509985
In Stock
11% off MSRP $ 192.54

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

$ 172.26 USD
Free Shipping
11% off MSRP
$ 192.54

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

$ 172.26 USD
Free Shipping
This Original BMW water pump is the latest updated design with a composite impeller. The composite material (similar to Kevlar) is much stronger than the problematic plastic impeller from past water pumps. And it's lighter than the aftermarket metal impellers so that means less strain on the bearing. For an OE/OEM replacement, we have found that this is the highest quality and longest lasting waterpump available.

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 waterpump fits the following BMWs:
1999-2006 E46 3 series - 323i, 323Ci, 328i, 328Ci, 325i, 325Ci, 330i, 330Ci
1999-2003 E39 5 series - 528i, 525i, 530i
1999-2002 Z3 Roadster/Coupe - Z3 2.8, Z3 2.5, Z3 3.0
2004-2006+ X3 SAV - X3 2.5 & 3.0
2000-2006 X5 SAV - X5 3.0
2003-2005 Z4 Roadster/Coupe - Z4 2.5 & Z4 3.0
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Mishimoto - Corporate Logo
T#:8933504
Part#: MMOCULBK
In Stock
$ 536.99 USD
Free Shipping
$ 536.99 USD
Free Shipping

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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Advanced Auto Fabrication - Corporate Logo
T#:7624630
Part#: 116211
In Stock at Vendor
$ 175.00 USD
Free Shipping
$ 175.00 USD
Free Shipping
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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Genuine BMW - Corporate Logo
T#:12482
Part#: 17112229053
Ships in 1 Business Day
$ 177.99

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

$ 172.99 USD
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$ 172.99 USD
Free Shipping
This is the Genuine BMW coolant reservoir / expansion tank vent hose for E46 M3 with the S54 engine.

This item fits the following BMWs:
2001-2006 E46 BMW M3

Spal - Corporate Logo
T#:598821
Part#: 30101516
Ships in 3 Business Days
11% off MSRP $ 168.99

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

$ 149.99 USD
Free Shipping
11% off MSRP
$ 168.99

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

$ 149.99 USD
Free Shipping
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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Genuine BMW - Corporate Logo
T#:12502
Part#: 11531318274
In Stock
16% off MSRP $ 147.44

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

$ 123.15 USD
Free Shipping
16% off MSRP
$ 147.44

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

$ 123.15 USD
Free Shipping
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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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
Free Shipping
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
Free Shipping

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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Mahle-Behr - Corporate Logo
T#:341098
Part#: 11537509227
Ships in 1 Business Day
$ 104.39

This product was last offered at the strikethrough price on
08-14-2026

$ 104.28 USD
Free Shipping
$ 104.28 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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BMW E46 M3 S54 3.2L Water Pump
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:378573
Part#: 11517838159
Ships in 1 Business Day
$ 105.79 USD
Free Shipping
$ 105.79 USD
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Includes sealing gaskets
Mishimoto - Corporate Logo
T#:640347
Part#: MMTS-E46-99V2
Ships in 3 Business Days
$ 135.99 USD
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$ 135.99 USD
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Genuine BMW - Corporate Logo
T#:2303
Part#: 11531318274-K
In Stock
$ 149.25 USD
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$ 149.25 USD
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Replacement stock thermostat for E46 M3, Z3M w S54 engine, Z4M.The thermostat can be replaced on the E46 M3 without removing the water pump. This can save you money if the pump still has life left on it but the thermostat needs to be done now. Symptoms of a bad thermostat include an erratic temp gauge and a fault code. When replacing the thermostat, there are three o-rings that will likely need to be replaced between the thermostat and the water pump housing, and two on the coolant tube going to the head. We also recommend new hoses, clamps, and BMW coolant. Replacement should take about one hour.

Note: even though this can be done without replacing the water pump, the job involves removing the same items to access this area. And opening the thermostat housing will spill a lot of coolant. In other words, if you don't replace the water pump at the same time, you're going to repeat this process when the pump needs replacing. We offer a complete water pump overhaul package that covers everything you need if you want to it all at once. You can the thermostat to that package and get everything without any duplicate parts. Click here for the E46 M3 water pump kit.

On S54 engines (E46 M3, MZ3, Z4 M) there is a flanged head bolt going into the cylinder head, behind the thermostat cover. This holds the left side timing chain guide rail in place and if it's loose or falls out you could have a very serious engine failure to deal with. Make sure to check this bolt while you have the thermostat cover off. You only need to make sure it's tight. But if it's come loose you may want to replace the seal ring and use a small touch of oil-resistant thread sealer.

This item fits the following BMWs:
2000-2001 E46 3 Series M3 M3 Convertible 2000-2006
2001-2002 Z3 Roadster / Coupe Z3 M Roadster Z3 M Coupe w S54 Engine
2006-2008 E86 E86 Z4 Z4 M Roadster Z4 M Coupe
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Mahle-Behr - Corporate Logo
T#:341065
Part#: 17119071519
Ships in 1 Business Day
$ 271.99

This product was last offered at the strikethrough price on
08-17-2026

$ 232.99 USD
Free Shipping
$ 232.99 USD
Free Shipping

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
2X Entries Into Our F80 M3 Sweepstakes
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

Spal - Corporate Logo
T#:376582
Part#: 30102049
In Stock
$ 207.99 USD
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$ 207.99 USD
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For BMW owners seeking enhanced airflow or tighter engine compartment clearance, Turner Motorsport presents a Universal Fan. Ideal for applications like aftermarket turbo setups, this fan ensures optimal cooling performance. Please note that this fan is universal and may require modification to fit your specific application. Crafted in Italy, this fan boasts dimensions of 16.30in x 15.75in x 3.47in and provides an airflow of 2024 CFM.

  • Enhanced airflow for improved engine cooling
  • Ideal for applications with tight tolerances, such as aftermarket turbo setups
  • Universal design allows for versatile installation
  • Crafted in Italy for quality assurance
  • Compact size with powerful airflow capacity
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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
Free Shipping
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

Genuine BMW - Corporate Logo
T#:348485
Part#: 17111437362
Ships in 3 Business Days
4% off MSRP $ 134.99

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

$ 130.00 USD
Free Shipping
4% off MSRP
$ 134.99

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

$ 130.00 USD
Free Shipping

Ensure optimal performance and temperature regulation in your BMW's automatic transmission with the Turner Motorsport Genuine Automatic Transmission Thermostat, part number 17111437362. This thermostat serves as a crucial component of the heat exchanger system, maintaining proper fluid temperatures for smooth transmission operation. Typically replaced during expansion tank maintenance, this Genuine BMW part guarantees reliability and compatibility with your vehicle.

Key Benefits:

  • Genuine BMW quality assurance
  • Maintains proper transmission fluid temperatures
  • Ensures smooth transmission operation
  • Direct replacement for OEM thermostat
  • Compatible with expansion tank replacement
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Mishimoto - Corporate Logo
T#:385255
Part#: MMHOSEE46NONMBL
In Stock
$ 199.99 USD
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$ 199.99 USD
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Add some additional reliability and engine bay styling with the Mishimoto BMW E46 Non-M Silicone Radiator Hose Kit. The Mishimoto BMW E46 radiator hoses are made from a combination of high-grade silicone and heat-resistant embedded fibers for a high-quality replacement kit for your stock rubber hoses. The pre-attached stock-style plastic quick-disconnect fittings include new O-rings, providing a reliable leak-free seal during installation. 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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Genuine BMW - Corporate Logo
T#:13013
Part#: 11537830711
In Stock
Sale - Save 8% $ 154.99

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

$ 143.23 USD
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Sale - Save 8%
$ 154.99

This product was last offered at the strikethrough price on
08-26-2026

$ 143.23 USD
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Genuine BMW Pipe
This item fits the following BMW Chassis:
E46 M3,E46

Fits BMW Engines including:
S54


Mishimoto - Corporate Logo
T#:637388
Part#: MMFAN-12C
Ships in 3 Business Days
$ 96.99 USD
Free Shipping
$ 96.99 USD
Free Shipping

BMW Mishimoto 12" Universal Curved Blade Electrical Fan

The BMW Mishimoto 12" Universal Curved Blade Electrical Fan is an ideal upgrade for enhancing cooling efficiency or addressing fitment issues with aftermarket components. Turner Motorsport offers this fan with a slim profile that allows for easy installation flush against the radiator, ensuring optimal performance and space utilization.

Benefits:

  • High-Flow Performance: Delivers 1150 CFM of airflow for superior cooling efficiency.
  • Universal Fitment: Designed to fit a wide range of vehicles and applications.
  • Compact Design: With a diameter of 12" and an overall thickness of just 2.5", it increases engine bay space and allows for flexible installation.
  • Versatile Operation: Easily reversible for use as either a pusher or puller fan.
  • Mishimoto Lifetime Warranty: Backed by Mishimoto's lifetime warranty for peace of mind.
  • Prop 65 Warning: Note that Proposition 65 may apply to this product. For more information, visit www.P65Warnings.ca.gov.
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Genuine BMW - Corporate Logo
T#:374557
Part#: 17117573781OEKT
In Stock
$ 273.99 USD
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$ 273.99 USD
Free Shipping
The expansion tank in your BMW is a vital component of the cooling system, and because of the constant abuse from heat and temperature changes, it often fails. This kit contains all of the basic items needed for a tank replacement.
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AAF E46 Transmission Crossmembers - 6-Speed Non-M
For use with solid front engine mounts only!
Advanced Auto Fabrication - Corporate Logo
T#:7624639
Part#: 116222
In Stock
$ 190.00 USD
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$ 190.00 USD
Free Shipping
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 6-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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Spal - Corporate Logo
T#:583649
Part#: 30102048
In Stock
$ 207.99 USD
Free Shipping
$ 207.99 USD
Free Shipping
Universal fan that allows increased cooling capacity and shroudless design. 1959 CFM.


Mishimoto - Corporate Logo
T#:378442
Part#: MMHOSEE4699BK
In Stock at Vendor
$ 121.99 USD
Free Shipping
$ 121.99 USD
Free Shipping
Mishimoto BMW E46 silicone radiator hose kits are made with a dual-layer combining high-grade silicone and heat-resistant embedded fibers to provide efficient heat reduction and increased pressure tolerance, all with an OEM replacement fit. Perfect for your BMW. Direct fit for 2001–2006 BMW E46 M3 Max temperature of 330°F Made of high-grade silicone and heat-resistant embedded fibers Efficiently reduces heat Increases pressure tolerance OEM replacement fit Available in black, blue, or red 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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Mishimoto - Corporate Logo
T#:1256484
Part#: MMOCULTBK
Ships in 3 Business Days
$ 599.99 USD
Free Shipping
$ 599.99 USD
Free Shipping

Introducing Mishimoto's Universal Oil Cooler (19 row with Thermostat)

In pursuit of optimal engine lubrication, even under ideal driving conditions, is paramount for BMW owners. Elevated oil temperatures can compromise oil pressure and hinder efficient lubrication. Turner Motorsport's new oil cooler offers a solution to maintain cool oil temperatures, ensuring your engine functions at its best. This comprehensive kit includes four feet of stainless braided line, adapter fittings, and an oil filter sandwich adapter.

Key Features:

  • Effective Heat Dissipation: The oil cooler efficiently dissipates heat, keeping oil temperatures within the optimal range for peak engine performance.
  • Comprehensive Kit: This kit includes four feet of stainless braided line, adapter fittings, and an oil filter sandwich adapter, providing everything you need for a seamless installation.
  • Precise Temperature Control: Equipped with a thermostat for fine temperature and flow control, ensuring the ideal oil temperature is maintained.
  • Proposition 65 Compliant: This product complies with Proposition 65, a California law that ensures product safety.

Elevate your BMW's engine performance and protect it from the effects of elevated oil temperatures. Turner Motorsport has the solution you need.

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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Mishimoto - Corporate Logo
T#:378435
Part#: MMHOSEE4699BL
In Stock at Vendor
$ 121.99 USD
Free Shipping
$ 121.99 USD
Free Shipping
Mishimoto BMW E46 silicone radiator hose kits are made with a dual-layer combining high-grade silicone and heat-resistant embedded fibers to provide efficient heat reduction and increased pressure tolerance, all with an OEM replacement fit. Perfect for your BMW. Direct fit for 2001–2006 BMW E46 M3 Max temperature of 330°F Made of high-grade silicone and heat-resistant embedded fibers Efficiently reduces heat Increases pressure tolerance OEM replacement fit Available in black, blue, or red 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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Expansion Tank Mounting Bracket - E46 - Manual Trans
For vehicles with manual transmission only
Genuine BMW - Corporate Logo
T#:13180
Part#: 17111436250
Ships in 3 Business Days
2% off MSRP $ 134.99

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

$ 131.99 USD
Free Shipping
2% off MSRP
$ 134.99

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

$ 131.99 USD
Free Shipping
This Genuine BMW part is the mounting bracket from the radiator to the expansion tank on E46 3 series Manual Transmission.

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:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
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Genuine BMW - Corporate Logo
T#:367652
Part#: 11527505302
Ships in 3 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
Genuine BMW - Corporate Logo
T#:360695
Part#: 11537830715
Ships in 3 Business Days
$ 64.99 USD
Free Shipping
$ 64.99 USD
Free Shipping

Genuine BMW - Corporate Logo
T#:360696
Part#: 11537830716
Ships in 3 Business Days
$ 65.99 USD
Free Shipping
$ 65.99 USD
Free Shipping
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

Genuine BMW - Corporate Logo
T#:4472
Part#: 11511436590
In Stock
Sale - Save 7% $ 73.99

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

$ 68.99 USD
Limited Qty Sale
Free Shipping
Sale - Save 7%
$ 73.99

This product was last offered at the strikethrough price on
08-17-2026

$ 68.99 USD
Limited Qty Sale
Free Shipping
SEE T#337981

Mishimoto - Corporate Logo
T#:381042
Part#: MMOC-19
In Stock
$ 218.99

This product was last offered at the strikethrough price on
05-06-2026

$ 196.99 USD
Free Shipping
$ 196.99 USD
Free Shipping
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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Expansion Tank Mounting Plate
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:402140
Part#: 17111436250
In Stock
$ 70.99 USD
Free Shipping
$ 70.99 USD
Free Shipping
Mishimoto - Corporate Logo
T#:378422
Part#: MMFAN14
In Stock
$ 100.99 USD
Free Shipping
$ 100.99 USD
Free Shipping
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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Mishimoto - Corporate Logo
T#:637389
Part#: MMFAN-14C
In Stock
$ 104.99 USD
Free Shipping
$ 104.99 USD
Free Shipping
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 1300 CFM of airflow Universal fitment Compact design with a diameter of 14" and an overall thickness of only 2.65" 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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Spal - Corporate Logo
T#:598801
Part#: 30100375
In Stock
$ 99.99 USD
Free Shipping
$ 99.99 USD
Free Shipping
861 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: 13.25in x 12.5in x 2.2in Airflow (CFM): 861
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