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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Complete Cooling System Hose Kit - BMW E46 M52TU M54
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15677507
Part#: 11531436410-KT
Ships in 6 Business Days
Sale - Save 10% $ 285.99

This product was last offered at the strikethrough price on
06-16-2026

$ 258.00 USD
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Sale - Save 10%
$ 285.99

This product was last offered at the strikethrough price on
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$ 258.00 USD
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The cooling hoses on your BMW are exposed to vast temperature changes, as well as exposure the elements. Over time, they will fail and can cause you to be stranded, or a worse failure. Turner Motorsport has created a kit that includes all of the necessary cooling system hoses as well as a gallon of coolant to correctly service your cooling system. See kit contents tab for a list of included components
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Gates Lower Radiator Hose - E46 3 Series (Not M3)
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:337992
Part#: 11531436408
Ships in 4 Business Days
Starting at $ 42.99 USD
Free Shipping on orders $49 and up
Starting at $ 42.99 USD
Free Shipping on orders $49 and up
OEM Replacement Lower Radiator Hose for E46 3 series (Not 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.

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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High-Performance Cooling System Service Kit - Level 3
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:41391174
Part#: 008682LA02RF3KT
Ships on Dec 7, 2026
Sale - Save 4% $ 1,824.08

This product was last offered at the strikethrough price on
07-16-2026

$ 1,754.07 USD
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Sale - Save 4%
$ 1,824.08

This product was last offered at the strikethrough price on
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$ 1,754.07 USD
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Due to weak rubber and plastic construction, vital cooling system parts are prone to premature failure. Key components, such as radiator hoses, the thermostat, and the expansion tank are particularly prone to cracks, leaks, and catastrophic failure, which can lead to overheating and potentially severe engine damage. Fortunately, our team of experts has assembled this kit of high-performance alternatives and high-quality OE replacement components, both tailored to safeguard your cooling system from failure and increase cooling system capability.

Our Level 3 High-Performance Cooling System Service Kit is the ultimate solution for ensuring long-term reliability and enhanced cooling performance. Each component in this comprehensive kit has been carefully selected by our team of enthusiasts to address common failure points and provide a robust, performance-oriented upgrade for your vehicle. By replacing aging factory parts with premium, high-performance alternatives, you’ll optimize cooling efficiency and safeguard your engine from the stress of overheating.

Our all-inclusive "Level 3" High-Performance Cooling System Service Kit includes:

CSFxTurner Performance Triple-Pass Aluminum Radiator Turner Motorsport Heavy Duty Aluminum Expansion Tank ECS Silicone Radiator Hoses ECS Aluminum Water Pump Pulley Wahler Thermostat (80°C) Bremmen Aluminum Water Pump Bremmen Parts Auxiliary Fan Switch Continental Accessory Belt ECS Kevlar-Reinforced A/C Compressor Drive Belt Genuine BMW Water Pump O-Ring Genuine BMW Water Pump Bolts Genuine BMW G48 Antifreeze (1 Gallon) Redline Water Wetter Performance Coolant Additive (12 oz.)

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Heater Hard Line replacement Kit
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15777306
Part#: 11531705210-KT
Ships on Nov 12, 2026
$ 259.99

This product was last offered at the strikethrough price on
04-28-2026

$ 251.99 USD
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$ 251.99 USD
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Includes every thing needed to replace heater coolant hard lines, includes gaskets, hoses, and a URO aluminum return line!

Cooling System Refresh Kit - Level 1
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15744012
Part#: 32411712735-KT
In Stock
Sale - Save 7% $ 664.99

This product was last offered at the strikethrough price on
07-16-2026

$ 619.41 USD
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Sale - Save 7%
$ 664.99

This product was last offered at the strikethrough price on
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$ 619.41 USD
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Stop the problems before they arise. If you vehicle has 60,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. To keep everything in top order, continue to replace these components at 60,000 mile intervals. Water pump failure, cracked plastic housings, and expansion tank leaks will not be a concern once all these problem parts are replaced. Included in this kit are the following parts. Rein Water Pump with metal impeller FAE Fan Switch Vaico Q+ thermostat - made in Germany! New O-ring Sealing Gaskets OEM Expansion Tank & Cap 1 Gallon Coolant Rein Upper & Lower Radiator Hoses
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ECS Cooling System Refresh Kit - Level 1
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15677493
Part#: 11517527910-KT
In Stock
Sale - Save 4% $ 336.99

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

$ 324.43 USD
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Sale - Save 4%
$ 336.99

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

$ 324.43 USD
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Stop the problems before they arise. If you vehicle has 80,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. To keep everything in top order, continue to replace these components at 80,000 mile intervals. Water pump failure, cracked plastic housings, and expansion tank leaks will not be a concern once all these problem parts are replaced. This kit was put together by Turner including the basic parts that need replaced. Water pump with metal impeller Fan switch Thermostat and thermostat housing Sealing gaskets Expansion tank with level sensor, clamp and cap 1 Gallon Coolant Upper & lower radiator hoses
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High Performance Metal Water Pump & Pulley Kit - M54
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:55749612
Part#: 888010330KT3
In Stock
New Item
$ 299.99 USD
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ECS Cooling System Refresh Kit - Level 2
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15677514
Part#: 11281706545-KT
In Stock
Sale - Save 3% $ 474.99

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

$ 460.24 USD
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Sale - Save 3%
$ 474.99

This product was last offered at the strikethrough price on
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$ 460.24 USD
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Stop the problems before they arise. If your BMW has 80,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. Avoid water pump failure, cracked thermostat housings, and expansion tank leaks, which all lead to overheating and subsequent damage. This kit was put together by Turner for a complete cooling system service. GEBA water pump with metal impeller ECS aluminum water pump pulley Fan switch Thermostat and thermostat housing Sealing gaskets Expansion tank with level sensor, clamp and cap 1 Gallon Coolant Upper & lower radiator hoses Accessory drive belts Radiator drain plug
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ECS Cooling System Refresh Kit - Level 1
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15744010
Part#: ECSE4617111KT
In Stock
Sale - Save 8% $ 438.99

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

$ 401.84 USD
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Sale - Save 8%
$ 438.99

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

$ 401.84 USD
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BMW has been designing notoriously failure-prone cooling systems since the late 1980s. The coolant capacity in most BMW engines is not sufficient to accommodate any driving or overheating near red zone temperatures. After the gauge reaches this critical area, it is common for thousands of dollars in damage to occur. Stop the problems before they arise. If you vehicle has 80,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. To keep everything in top order, continue to replace these components at 80,000 mile intervals. Water pump failure, cracked plastic housings, and expansion tank leaks will not be a concern once all these problem parts are replaced. Water pump with metal impeller ECS Aluminum water pump pulley Fan switch Thermostat and thermostat housing Sealing gaskets Expansion tank with level sensor, clamp and cap 1 Gallon Coolant Upper & lower radiator hoses
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ECS Cooling System Refresh Kit - Level 2
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15677545
Part#: 17111437361-KT
In Stock
Sale - Save 3% $ 472.99

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

$ 457.56 USD
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Sale - Save 3%
$ 472.99

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

$ 457.56 USD
Free Shipping on orders $49 and up
Stop the problems before they arise. If your vehicle has 80,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. To keep everything in top order, continue to replace these components at 80,000 mile intervals. Water pump failure, cracked plastic housings, and expansion tank leaks will not be a concern once all these problem parts are replaced. GEBA water pump with metal impeller ECS aluminum water pump pulley Fan switch Thermostat & housing Sealing gaskets Expansion tank with level sensor, clamp and cap 1 Gallon Coolant Upper & lower radiator hoses Accessory drive belts Radiator drain plug
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Cooling System Refresh Kit - Level 2
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:15744066
Part#: 11287837898-KT
Ships on Dec 7, 2026
Sale - Save 26% $ 808.99

This product was last offered at the strikethrough price on
07-15-2026

$ 596.54 USD
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Sale - Save 26%
$ 808.99

This product was last offered at the strikethrough price on
07-15-2026

$ 596.54 USD
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BMW has been designing notoriously failure-prone cooling systems since the late 1980s. The coolant capacity in most BMW engines is not sufficient to accommodate any driving or overheating near red zone temperatures. After the gauge reaches this critical area, it is common for thousands of dollars in damage to occur. Stop the problems before they arise. If your vehicle has 80,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. To keep everything in top order, continue to replace these components at 80,000 mile intervals. Water pump failure, cracked housings, and expansion tank leaks will not be a concern once all these problem parts are replaced. Saleri water pump with metal impeller ECS aluminum water pump pulley Fan switch Vaico Q+ thermostat - made in Germany! Sealing gaskets Expansion tank with level sensor, clamp and cap 1 Gallon Coolant Upper & lower radiator hoses Accessory drive belts Radiator drain plug
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High-Performance Cooling System Service Kit - Level 2
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:37622242
Part#: 008682LA02RF2KT
Ships on Dec 7, 2026
Sale - Save 6% $ 1,208.99

This product was last offered at the strikethrough price on
07-16-2026

$ 1,142.38 USD
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Sale - Save 6%
$ 1,208.99

This product was last offered at the strikethrough price on
07-16-2026

$ 1,142.38 USD
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Due to weak rubber and plastic construction, vital cooling system parts are prone to premature failure. Key components, such as radiator hoses, the thermostat, and the expansion tank are particularly prone to cracks, leaks, and catastrophic failure, which can lead to overheating and potentially severe engine damage. Fortunately, our team of experts has assembled this kit of high-performance alternatives and high-quality OE replacement components, both tailored to safeguard your cooling system from failure and increase cooling system capability.

Our Level 2 High-Performance Cooling System Service Kit is the ultimate solution for ensuring long-term reliability and enhanced cooling performance. Each component in this comprehensive kit has been carefully selected by our team of enthusiasts to address common failure points and provide a robust, performance-oriented upgrade for your vehicle. By replacing aging factory parts with premium, high-performance alternatives, you’ll optimize cooling efficiency and safeguard your engine from the stress of overheating.

Our all-inclusive "Level 2" High-Performance Cooling System Service Kit includes:

Turner Motorsport Heavy Duty Aluminum Expansion Tank ECS Silicone Radiator Hoses ECS Aluminum Water Pump Pulley Wahler Thermostat (80°C) Bremmen Aluminum Water Pump Bremmen Parts Auxiliary Fan Switch Continental Accessory Belt ECS Kevlar-Reinforced A/C Compressor Drive Belt Genuine BMW Water Pump O-Ring Genuine BMW Water Pump Bolts Genuine BMW G48 Antifreeze (1 Gallon) Redline Water Wetter Performance Coolant Additive (12 oz.)

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High-Performance Cooling System Service Kit - Level 1
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:37622240
Part#: 008682LA02RF1KT
In Stock
Sale - Save 4% $ 1,038.99

This product was last offered at the strikethrough price on
07-16-2026

$ 998.54 USD
Free Shipping on orders $49 and up
Sale - Save 4%
$ 1,038.99

This product was last offered at the strikethrough price on
07-16-2026

$ 998.54 USD
Free Shipping on orders $49 and up

Due to weak rubber and plastic construction, vital cooling system parts are prone to premature failure. Key components, such as radiator hoses, the thermostat, and the expansion tank are particularly prone to cracks, leaks, and catastrophic failure, which can lead to overheating and potentially severe engine damage. Fortunately, our team of experts has assembled this kit of high-performance alternatives and high-quality OE replacement components, both tailored to safeguard your cooling system from failure and increase cooling system capability.

The Turner Motorsport Level 1 Performance Cooling System Refresh Kit is the ultimate solution for ensuring long-term reliability and enhanced cooling performance. Each component in this comprehensive kit has been carefully selected by our team of enthusiasts to address common failure points and provide a robust, performance-oriented upgrade for your vehicle. By replacing aging factory parts with premium, high-performance alternatives, you’ll optimize cooling efficiency and safeguard your engine from the stress of overheating.

Our comprehensive "Level 1" High-Performance Cooling System Service Kit includes:

Turner Motorsport Heavy Duty Aluminum Expansion Tank ECS Silicone Radiator Hoses Wahler Thermostat (80°C) Bremmen Aluminum Water Pump Bremmen Parts Auxiliary Fan Switch Genuine BMW Water Pump O-Ring Genuine BMW G48 Antifreeze (1 Gallon) Redline Water Wetter Performance Coolant Additive (12 oz.)

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Genuine BMW - Corporate Logo
T#:1474
Part#: 82141467704
In Stock
6% off MSRP $ 29.97

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

$ 28.21 USD
Free Shipping on orders $49 and up
6% off MSRP
$ 29.97

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

$ 28.21 USD
Free Shipping on orders $49 and up
The use of Original BMW Anti-Freeze/Coolant will ensure sufficient cooling in summer and protection against freeze-ups in winter. BMW Antifreeze/Coolant will also guard your vehicle's various engine components against corrosion.
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Bav Auto Thermostat With Aluminum Housing - M52TU M54
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:12544802
Part#: 11531437040
In Stock
Sale - Save 19% $ 104.99

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

$ 84.99 USD
Free Shipping on orders $49 and up
Sale - Save 19%
$ 104.99

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

$ 84.99 USD
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The plastic thermostat cover in your BMW is a known point of failure. Throughout years of repeated contact with hot coolant, the plastic can crack and cause massive coolant leaks and potential overheating. Eliminate one of the weak links in your cooling system with a replacement aluminum thermostat housing. By installing this aluminum unit, you have no worries as far as plastic housing cracks go
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Genuine BMW - Corporate Logo
T#:367843
Part#: 13621433076
In Stock
16% off MSRP $ 66.05

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

$ 55.45 USD
Free Shipping on orders $49 and up
16% off MSRP
$ 66.05

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

$ 55.45 USD
Free Shipping on orders $49 and up

Bav Auto Coolant Expansion Tank - E53 X5, E46, E83 X3
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:640496
Part#: 17137787039
In Stock
Sale - Save 18% $ 61.99

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

$ 50.99 USD
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Sale - Save 18%
$ 61.99

This product was last offered at the strikethrough price on
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$ 50.99 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. 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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Genuine BMW - Corporate Logo
T#:207187
Part#: 17117639022
In Stock
21% off MSRP $ 34.96

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

$ 27.67 USD
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21% off MSRP
$ 34.96

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

$ 27.67 USD
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Genuine BMW Radiator Cap - 2,0Bar
This item fits the following BMW Chassis:
E36 M3,E39 M5,E46 M3,E85 Z4M,E53 48IS,E36,E38,E39,E46,E53 X5,E65,E83 X3,E85 Z4,E86 Z4,F06,F10,F12,F13

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Bavarian Autosport Water Pipe - E46 E39 Z4 Z3 (M52TU, M54)
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:638085
Part#: 11537502525
In Stock
Sale - Save 20% $ 50.99

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

$ 40.79 USD
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Sale - Save 20%
$ 50.99

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

$ 40.79 USD
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This plastic water pipe is positioned directly underneath your intake manifold. Due to its plastic construction, it is notorious for catastrophic failure. Rapid cooling loss and overheating are both direct results of this failure, posing permanent and lasting damage to the engine.

Replace your cracked/broken coolant pipe with this high-quality Bavarian Autosport component to ensure long-term reliability and perfect fitment.

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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Engine Fan - 11 Blades, 420mm - Many 6 Cylinders
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:1287
Part#: 11521712058
In Stock
$ 32.19 USD
Free Shipping on orders $49 and up
This fan is driven by the serpentine belt, engaged by the fan clutch. If you have bad motor mounts, it's quite common for the blades of this fan to make contact with the radiator or radiator shroud, essentially self-destructing the fan into many peices. Be sure to get a new fan clutch, while you are replacing this. 
With more than 4,000 European vehicle replacement parts, URO is no stranger to the market. Superior metal stock and extremely strict quality control are at the forefront of URO’s agenda and it shows as they become the OE supplier for more and more car companies every single day.

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

1989-1994 E32 735i/iL
1991-1995 E34 525i, 535i, M5
1992-1999 E36 3 series with 6 cylinder engine (M3, 325, 328, 323)
1997-2002 Z3 2.3, 2.5, 2.8, 3.0, and MZ3 3.2 (S52)
1997-2003 E39 5 series, 525i, 528i, 530i
1999-2000 E46 3 series 323i/Ci, 328i/Ci
2001-2005 E46 3 series WITH AUTOMATIC TRANSMISSION ONLY
2001-2006 E46 M3 (all):
2001-2006 X5 3.0i
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Genuine BMW - Corporate Logo
T#:6939
Part#: 11531705210
In Stock
$ 66.99 USD
Free Shipping on orders $49 and up
This is the Genuine BMW plastic heater inlet pipe that connects the cylinder head to the heater inlet on cars with the M52 or M54 engine.The plastic on this hose becomes brittle over time and eventually leads to failure.

This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
1999-2003 E39 BMW 525i 528i 530i
2004-2006 E83 BMW X3 2.5i X3 3.0i - M54 engine
2000-2006 E53 BMW X5 3.0i
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 E85 BMW Z4 2.5i Z4 3.0i
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Bav Auto Heater Inlet Pipe - E46 E39 E53 E83 E85 Z3
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:638080
Part#: 11531705210
In Stock
Sale - Save 20% $ 40.99

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

$ 32.79 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 40.99

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

$ 32.79 USD
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This is the plastic heater inlet pipe that connects the cylinder head to the heater inlet on cars with the M52 or M54 engine. The plastic on this hose becomes brittle over time and eventually leads to failure. Replace yours with a brand new Bav Auto Heater inlet pipe to prevent catastrophic failure.
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Bav Auto Expansion Tank Mounting Plate - E46 Non-M w/ Manual Trans ...
For vehicles with a manual transmission only
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:638088
Part#: 17111436250
In Stock
Sale - Save 20% $ 44.99

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

$ 35.99 USD
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Sale - Save 20%
$ 44.99

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

$ 35.99 USD
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This Bav Auto part is the mounting bracket from the radiator to the expansion tank on an E46 3 series with a Manual Transmission. 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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Genuine BMW Auxiliary Fan Switch
Mounted in upper radiator hose, controls operation of auxiliary fan Mounted in lower radiator hose, controls operation of auxiliary fan
Genuine BMW - Corporate Logo
T#:341058
Part#: 13621433077
In Stock
16% off MSRP $ 66.05

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

$ 55.55 USD
Free Shipping on orders $49 and up
16% off MSRP
$ 66.05

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

$ 55.55 USD
Free Shipping on orders $49 and up


Genuine BMW Manual Transmission Crossmember
For vehicles with production date from 03/2003
Genuine BMW - Corporate Logo
T#:49465
Part#: 22316760531
Ships on Oct 19, 2026
3% off MSRP $ 263.99

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

$ 254.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 263.99

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

$ 254.99 USD
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Genuine BMW Gearbox Support
This item fits the following BMW Chassis:
E85 Z4M,E46,E85 Z4,E86 Z4

Radiator Fan Clutch
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:373088
Part#: 11527831619
In Stock
$ 71.83 USD
Free Shipping on orders $49 and up
Direct replacement

Genuine BMW - Corporate Logo
T#:12466
Part#: 11517831099
In Stock
14% off MSRP $ 41.99

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

$ 36.13 USD
Free Shipping on orders $49 and up
14% off MSRP
$ 41.99

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

$ 36.13 USD
Free Shipping on orders $49 and up
Steel water pump gasket for your Z3 / M3

Bav Auto Expansion Tank Mounting Plate - E46 Non-M w/ Auto Trans ...
For vehicles with an automatic transmission only
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:638089
Part#: 17111436251
In Stock
Sale - Save 20% $ 45.99

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

$ 36.79 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 45.99

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

$ 36.79 USD
Free Shipping on orders $49 and up
This Bav Auto part is the mounting bracket from the radiator to the expansion tank on E46 3 series and E85/E86 Z4 with an Automatic Transmission. 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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Genuine BMW - Corporate Logo
T#:14119
Part#: 64216902680
In Stock
3% 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.

$ 71.99 USD
Free Shipping on orders $49 and up
3% 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.

$ 71.99 USD
Free Shipping on orders $49 and up


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


Advanced Auto Fabrication - Corporate Logo
T#:7608839
Part#: 11641
In Stock at Vendor
$ 189.00 USD
Free Shipping on orders $49 and up

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 Water Pump - Remanufactured - 11517527799
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:372932
Part#: 11517527799
In Stock
$ 42.99 USD
Free Shipping on orders $49 and up
Features a metal impeller for reliability

Genuine BMW - Corporate Logo
T#:7408
Part#: 17111436245
Ships in 3 Business 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
Free Shipping on orders $49 and up
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

Genuine BMW - Corporate Logo
T#:21736
Part#: 17117514402
Ships in 3 Business Days
Sale - Save 8% $ 26.99

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

$ 24.86 USD
Free Shipping on orders $49 and up
Sale - Save 8%
$ 26.99

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

$ 24.86 USD
Free Shipping on orders $49 and up


Genuine BMW Bracket F.Radiator
This item fits the following BMW Chassis:
E46 M3,E85 Z4M,E53 48IS,E46,E53 X5 X5,E65,E83 X3,E85 Z4,E86 Z4,E90,E92,E93

URO Coolant Expansion Tank - BMW E46 M3
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:48608189
Part#: 17112283344
Ships in 1 Business Day
$ 155.99 USD
Free Shipping on orders $49 and up
​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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Coolant Expansion Tank - E53 E46 E83 M52 M54
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:373103
Part#: 17137787039
Ships in 1 Business Day
$ 45.99 USD
Free Shipping on orders $49 and up
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#:21734
Part#: 17111436264
In Stock
Sale - Save 10% $ 33.99

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

$ 30.54 USD
Free Shipping on orders $49 and up
Sale - Save 10%
$ 33.99

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

$ 30.54 USD
Free Shipping on orders $49 and up


Genuine BMW Bracket F.Radiator
This item fits the following BMW Chassis:
E46 M3,E46,E85 Z4

Fits BMW Engines including:
M52,M54,M56,S54

URO - Heater Inlet Pipe - E46, Z3, E39
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:34080697
Part#: 11531705210
Ships in 1 Business Day
$ 34.49 USD
Free Shipping on orders $49 and up
This runs from the front left side of the cylinder head under the intake manifold toward the firewall.

Genuine BMW - Corporate Logo
T#:11239
Part#: 71111179522
Ships in 3 Business 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
Free Shipping on orders $49 and up
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
Free Shipping on orders $49 and up
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 - Corporate Logo
T#:46115
Part#: 17121719356
Ships in 6 Business Days
3% off MSRP $ 31.99

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

$ 30.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 31.99

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

$ 30.99 USD
Free Shipping on orders $49 and up


Genuine BMW Cap
This item fits the following BMW Chassis:
E46 M3,E30,E46

Fits BMW Engines including:
M20,S54,S62

Genuine BMW - Corporate Logo
T#:14120
Part#: 64218363198
In Stock
Sale - Save 21% $ 45.99

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

$ 36.50 USD
Free Shipping on orders $49 and up
Sale - Save 21%
$ 45.99

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

$ 36.50 USD
Free Shipping on orders $49 and up


BMW Hose F Water Valve And Radiator -
This item fits the following BMW Chassis:
E46


Genuine BMW - Corporate Logo
T#:150726
Part#: 64216902679
Ships in 3 Business Days
Sale - Save 8% $ 34.99

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

$ 32.31 USD
Free Shipping on orders $49 and up
Sale - Save 8%
$ 34.99

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

$ 32.31 USD
Free Shipping on orders $49 and up


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

URO - Corporate Logo
T#:43750239
Part#: 64218376153
In Stock
$ 29.99 USD
Free Shipping on orders $49 and up
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. With the proper diameter, bends, and lengths, this is the perfect replacement for any swelled or damaged hose. An easy installation, it's piece of mind the next time you are on a long trip or your morning commute.
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Expansion Tank Retaining Plate
For vehicles with automatic transmission only
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:362912
Part#: 17111436251
Ships in 1 Business Day
$ 53.99 USD
Free Shipping on orders $49 and up
$ 53.99 USD
Free Shipping on orders $49 and up
Mounts to the side of the radiator for retaining the expansion tank

Genuine BMW - Corporate Logo
T#:14121
Part#: 64218376999
Ships in 3 Business Days
2% off MSRP $ 56.99

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

$ 55.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 56.99

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

$ 55.99 USD
Free Shipping on orders $49 and up


BMW Hose F Engine Inlet And Water Valve -
This item fits the following BMW Chassis:
E46

Genuine BMW - Corporate Logo
T#:12524
Part#: 32412282353
Ships in 3 Business Days
2% off MSRP $ 280.99

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

$ 274.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 280.99

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

$ 274.99 USD
Free Shipping on orders $49 and up


Genuine BMW Radiator Return Line
This item fits the following BMW Chassis:
E46 M3,E46

Genuine BMW Water Connection Pipe - E46 M54 M53
For vehicles with automatic transmission only
Genuine BMW - Corporate Logo
T#:7419
Part#: 17111707817
Ships in 3 Business Days
5% off MSRP $ 43.99

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

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

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

$ 41.99 USD
Free Shipping on orders $49 and up


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

Fits BMW Engines including:
M52,M54,M56



Genuine BMW - Corporate Logo
T#:14858
Part#: 12521741900
Ships in 3 Business Days
6% off MSRP $ 82.99

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

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

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

$ 77.99 USD
Free Shipping on orders $49 and up


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

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

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Genuine BMW - Corporate Logo
T#:13187
Part#: 17117530254
Ships in 3 Business Days
4% off MSRP $ 55.99

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

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

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

$ 53.99 USD
Free Shipping on orders $49 and up
Engineered to official BMW standards, this high strength plastic bracket locks the radiator into place while allowing necessary thermal movement, preventing stressed hose fittings or fatigue on radiator core seams. Ideal for cooling system overhauls, front end repairs, or replacing aged hardware, this genuine service part restores structural integrity to your front end cooling setup.
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