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BMW Cooling System Parts & Accessories

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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Powerflex Street Offset Lower Radiator Mounts
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Powerflex - Corporate Logo
T#:21637255
Part#: PFF5-4652
In Stock
$ 42.99 USD
Free Shipping on orders $49 and up
Powerflex Offset Lower Radiator Mounts for BMW E30, E36, E46, Z3, and Z4 offer a comprehensive range of benefits, including heightened cooling efficiency, precise radiator alignment, extended durability, noise reduction, compatibility with BMW models, and suitability for performance-oriented driving scenarios. These mounts are the preferred choice for BMW owners seeking to enhance their vehicle's cooling system performance, whether for daily driving or high-performance applications. Powerflex Offset Lower Radiator Mounts for BMW bring a host of advantages, encompassing: Enhanced Cooling Efficiency: Engineered for improved radiator positioning, these mounts enhance airflow, resulting in superior cooling performance. This ensures that the engine maintains an optimal temperature, reducing the risk of overheating during extended use or demanding conditions. Precise Radiator Alignment: These mounts offer precise radiator alignment, securing it firmly in place. This precision minimizes the potential for vibrations or alignment issues that could lead to leaks or inefficient cooling. Improved Durability and Longevity: Powerflex Offset Lower Radiator Mounts are meticulously crafted using durable polyurethane and high-quality materials. This robust construction enhances the mounts' lifespan, ensuring they can withstand the rigors of daily driving and challenging environments. Reduction in Vibrations and Noise: The secure and stable mounting provided by these mounts effectively reduces vibrations and noise stemming from radiator movement. This leads to a quieter and smoother driving experience without compromising cooling efficiency. BMW Model Compatibility: Designed exclusively for BMW vehicles, these mounts seamlessly and effectively integrate with your vehicle. They cater to the needs of BMW enthusiasts seeking to augment cooling performance and preserve their vehicle's reliability. Ideal for Performance Enthusiasts: Powerflex Offset Lower Radiator Mounts hold particular appeal for performance enthusiasts. They present an effective solution for optimizing cooling in high-performance BMW models, ensuring consistent engine performance during spirited drives or track sessions.
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Powerflex BMW E30 - E36 - E46 Offset Lower Radiator Mounts
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Powerflex - Corporate Logo
T#:34315165
Part#: PFF5-4652H
In Stock
$ 42.99 USD
Free Shipping on orders $49 and up

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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Behr Radiator - E36
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Behr - Corporate Logo
T#:1196128
Part#: 17111723784
In Stock at Vendor
$ 298.35 USD
$ 298.35 USD
Brand new radiator equivalent to OE

Hella Radiator - Manual - E34
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Behr - Corporate Logo
T#:363371
Part#: 17111737760
In Stock at Vendor
$ 687.60 USD
$ 687.60 USD
Replace your leaking radiator

Radiator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Behr - Corporate Logo
T#:591360
Part#: 17111728905
Back Ordered
$ 399.99

This product was last offered at the strikethrough price on
05-07-2026

$ 388.99 USD
Free Shipping on orders $49 and up
$ 388.99 USD
Free Shipping on orders $49 and up
Behr Replacement Radiator - More than likely, you are going to replace the radiator in your vehicle at least once. The joints where the cores meet the end tanks tend to get weak and are the first place to spring a leak. Impacts to the fins themselves can cause holes to form. Corrosion and clogging from the inside can make cooling less than effective and compromise coolant flow.
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Behr Radiator - E60, E61, E63, E64
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Behr - Corporate Logo
T#:579569
Part#: 376755591
Back Ordered
$ 267.99 USD
$ 267.99 USD
Replace your leaking radiator

E46 323/325/328/330 Manual, Z4 OEM Behr Radiator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Behr - Corporate Logo
T#:338021
Part#: 17119071518
In Stock at Vendor
Starting at $ 249.99 USD
Starting at $ 249.99 USD
This is a BEHR 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.

This radiator fits the follow BMWs: :
Only for Manual Transmission
1999-5/2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi - Not for cars with M56 engine

2003-2006 E85 BMW Z4 2.5i Z4 3.0i - M54 engine
2006-2008 E85 BMW Z4 M Roadster M Coupe
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REMOTE RADIATOR
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Behr - Corporate Logo
T#:33047035
Part#: 17117634565
In Stock at Vendor
$ 156.99

This product was last offered at the strikethrough price on
05-07-2026

$ 151.99 USD
Free Shipping on orders $49 and up
$ 151.99 USD
Free Shipping on orders $49 and up

Behr Radiator Replacement
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Automatic Vehicles only
Behr - Corporate Logo
T#:591355
Part#: 17117519211
In Stock at Vendor
$ 454.11 USD
$ 454.11 USD
Replace your faulty or worn radiator with this factory replacement

Radiator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Behr - Corporate Logo
T#:594798
Part#: 17117576827
Ships in 1-2 days
$ 415.99 USD
Free Shipping on orders $49 and up
Replacement Radiator from Behr Hella
Radiator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Behr - Corporate Logo
T#:594800
Part#: 17117605644
Ships on Jul 28, 2026
$ 362.99 USD
$ 362.99 USD
Replacement Radiator from Behr
Radiator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Behr - Corporate Logo
T#:594801
Part#: 17117570094
Ships on Jul 28, 2026
$ 374.99 USD
$ 374.99 USD
More than likely, you are going to replace the radiator in your vehicle at least once. The joints at where the cores meet the ends tend to get weak and are the first place to spring a leak. Impacts to the fins themselves can cause holes to form. Corrosion and clogging from the inside can make it less than effective. Replace your leaking unit with a factory replacement and get that jug of coolant out of your back seat.
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Behr Radiator - E34
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Behr - Corporate Logo
T#:1195792
Part#: 17111723467
Back Ordered
$ 273.99

This product was last offered at the strikethrough price on
05-07-2026

$ 265.99 USD
$ 265.99 USD
OE replacement radiator