BMW Radiators for BMW 3 Series E46 (1999-2005)

Clear BMW chassis

Please ensure your correct model is selected

We sell only OE supplier or approved aftermarket upgrade radiators for your BMW. It seems BMW took some shortcuts when it came to radiator design and used weak materials like plastic for critical connection points. If you are tracking older models like E30, E36, or E46, you probably are well aware of these issues. As these cars age, the plastic pieces become more brittle and failure prone. The solution is to replace with upgraded radiators that perform as upgrades for the original, failure prone radiator to avoid being left on the side of the road or, worse yet, the track.
Sort By:

CSF High Performance Aluminum Radiator - E46
For vehicles with manual transmission only
2X Entries For Our G87 M2 Sweepstakes!
CSF - Corporate Logo
T#:384650
Part#: 3055
In Stock
$ 409.00 USD
Free Shipping
$ 409.00 USD
Free Shipping

CSF is one of the premier cooling product specialists available on the market thanks to designs such as their High Performance Aluminum Radiators. Using a single pass designed core, this radiator gives you all the cooling you could ever need. Paired with these radiators are CNC machined brackets and corrosion resistant hardware that allow final installation to have a same as stock fitment! This enables you to have much higher cooling without having to cut away any metal or delete any important components just for the sake of lower coolant temperatures. 

Features:

  • Two-row, triple-pass design radiator core
  • CNC machined mounting brackets
  • All needed hardware included
  • Hand polished aluminum with a mirror-like finish
  • Stock fitment prevents modification to engine bay

Fits the following BMWs:
1998-2006 E46 BMW All Submodels
2002-2008 E85/86 BMW M Coupe & M Roadster

Show More Show Less
CSF OE Style Radiator - E46 Non-M (Manual Transmission)
For vehicles with Manual transmission only
2X Entries For Our G87 M2 Sweepstakes!
CSF - Corporate Logo
T#:582782
Part#: 3708
In Stock
$ 110.99 USD
Free Shipping
$ 110.99 USD
Free Shipping
This is a factory original style radiator from CSF and will fit perfectly into the stock location. Cooling will be identical to what your car came with originally. A great replacement with all the proper connections and in all of the proper locations.
Show More Show Less
CSF OE Style Radiator - E85/86 Z4 M, E46 Non-M (Automatic Transmissio...
For vehicles with automatic transmission only
2X Entries For Our G87 M2 Sweepstakes!
CSF - Corporate Logo
T#:582698
Part#: 3709
In Stock
$ 110.99 USD
Free Shipping
$ 110.99 USD
Free Shipping
This is a factory original style radiator from CSF and will fit perfectly into the stock location. Cooling will be identical to what your car came with originally. A great replacement with all the proper connections and in all of the proper locations.
Show More Show Less

CSF High Performance Aluminum Radiator - E46 M3
2X Entries For Our G87 M2 Sweepstakes!
CSF - Corporate Logo
T#:384654
Part#: 7058
In Stock
$ 645.00 USD
Free Shipping
$ 645.00 USD
Free Shipping

CSF is one of the premier cooling product specialists available on the market thanks to designs such as their High Performance Aluminum Radiators. Using a two-row, triple-pass designed core, this radiator gives you all the cooling you could ever need. Paired with these radiators are CNC machined brackets and corrosion resistant hardware that allow final installation to have a same as stock fitment! This enables you to have much higher cooling without having to cut away any metal or delete any important components just for the sake of lower coolant temperatures. 

Features:

  • Two-row, triple-pass design radiator core
  • CNC machined mounting brackets
  • All needed hardware included
  • Hand polished aluminum with a mirror-like finish
  • Stock fitment prevents modification to engine bay

Fits the following BMWs:
2001-2006 E46 BMW M3

Show More Show Less

BMW S54 Swap High-Performance Radiator - E36/E46
2X Entries For Our G87 M2 Sweepstakes! CARB certified for sale in all 50 states
CSF - Corporate Logo
T#:15180812
Part#: 7211
EO#: D-802-19
In Stock
$ 599.00 USD
Free Shipping
$ 599.00 USD
Free Shipping
The S54 is arguably one of the greatest BMW motors of all time. Power delivery, balance, and sound are top notch. While it doesn’t compare in power potential to newer turbo powered inline 6 motors, many enthusiasts still love and crave the NA power delivery that BMW was and still is famous for. Despite not being the most powerful option, the S54 Swap has become increasingly popular in the BMW community for the E36 Chassis.
Show More Show Less
Mishimoto - Corporate Logo
T#:384864
Part#: MMRAD-E46-323A
In Stock
$ 539.99 USD
$ 539.99 USD

Discover Mishimoto's solution, perfect for both daily drivers seeking a reliable OEM radiator upgrade and dedicated racers requiring a high-performance racing radiator. This high-quality aluminum radiator serves as a crucial cooling system component, offering larger coolant capacity and increased surface area for superior heat dissipation compared to OEM plastic.

The aluminum construction ensures enhanced durability, backed by Mishimoto's lifetime warranty, potentially making this radiator your last purchase!

Key Features:

  • Fully brazed aluminum core with TIG-welded end tanks
  • Compatible with stock clutch fan or Mishimoto electric fan shroud
  • Precision-designed CNC-machined quick-disconnect fittings for perfect hose compatibility
  • Track-tested design for reliability
  • 18% increase in coolant surface area
  • 41% increase in air surface area
  • 20% increase in coolant capacity

*WARNING: Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) may apply to this product. For more information about California Prop 65 warning, visit www.P65Warnings.ca.gov.*

Show More Show Less

Mishimoto - Corporate Logo
T#:384863
Part#: MMRAD-E46-323
Ships in 3 Business Days
$ 503.99 USD
$ 503.99 USD

Upgrade your radiator with Mishimoto, whether you're a daily driver seeking reliable quality or a racer in need of high-performance cooling. Mishimoto's aluminum radiator offers increased coolant capacity, better heat dissipation, and superior durability compared to OEM plastic radiators. Backed by a lifetime warranty, it may be the last radiator you'll ever need.

Key Features:

  • Fully brazed aluminum core with TIG-welded end tanks
  • Compatible with stock clutch fan or Mishimoto electric fan shroud
  • Precision-designed CNC-machined quick-disconnect fittings for seamless integration with stock hoses
  • Track-tested design
  • 18% increase in coolant surface area
  • 41% increase in air surface area
  • 20% increase in coolant capacity

Note: This product may be subject to Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) in California. Proposition 65 requires disclosure of chemicals known to cause cancer, birth defects, or other reproductive harm if present above very low levels. For more information about California Prop 65 warnings, visit www.P65Warnings.ca.gov.

Show More Show Less
Mishimoto - Corporate Logo
T#:391596
Part#: MMRAD-E46
Ships in 3 Business Days
Starting at $ 503.99 USD
Starting at $ 503.99 USD

Mishimoto E46 Aluminum Radiator features -

  • All aluminum construction
  • More durable and longer lasting than plastic components
  • 20% more capacity in the same space
  • Excellent fit and finish
  • Unbeatable lifetime warranty and accident-forgiveness

Mishimoto radiators address all of the defects of the stock E46 radiator in a well-engineered and price-competitive direct replacement unit. The Mishimoto radiator is an all aluminum design that replaces the factory plastic and aluminum stock radiator. The stock plastic end tanks are notorious for cracking and leaks whereas the Mishimoto has aluminum end tanks that will never fail. Mishimoto can also build 30% more coolant capacity into the a radiator that fits in the original location with no modifications. More coolant volume means the fluid is not heat soaked for as long (less super heated fluid circulating through the engine). For a direct replacement performance radiator, the Mishimoto is hard to beat!

Mishimoto was established in 2003 as a supplier of cooling components for drift and rally cars. Their radiators and intercoolers soon found a strong following in the hyper competitive drift scene where high horsepower and prolonged high revs dictate the need for durable and robust cooling solutions. The catchy Mishimoto name is a combination of the name of the founder's family pet - Mishi - and "moto". All products are designed and tested in the USA using state-of-the-art CAD tools and prototyping and with continuous evolution of product design. Mishimoto is so dedicated to quality that they offer a limited lifetime warranty and accident forgiveness.

Radiators for manual and automatic transmissions are different. Choose the one correct for your model from the options below.

Show More Show Less

Mishimoto - Corporate Logo
T#:51039998
Part#: MMB-E46-001
Ships in 3 Business Days
New Item
$ 1,108.99 USD
$ 1,108.99 USD
This bundle optimizes the E46’s thermal efficiency by converting the heavy, parasitic mechanical clutch fan to a high-flow electric unit.

Mishimoto - Corporate Logo
T#:378511
Part#: MMRADE4601
Ships in 3 Business Days
$ 721.99 USD
$ 721.99 USD
Mishimoto radiators address all of the defects of the stock E46 radiator in a well-engineered and price-competitive direct replacement unit. The Mishimoto radiator is an all aluminum design that replaces the factory plastic and aluminum stock radiator. The stock plastic end tanks are notorious for cracking and leaks whereas the Mishimoto has aluminum end tanks that will never fail. Mishimoto can also build 30% more coolant capacity into the a radiator that fits in the original location with no modifications. More coolant volume means the fluid is not heat soaked for as long (less super heated fluid circulating through the engine). For a direct replacement performance radiator, the Mishimoto is hard to beat!
Show More Show Less
Mishimoto Essentials Bundle - BMW E46 3'
For vehicles with manual transmission
Mishimoto - Corporate Logo
T#:51039991
Part#: MMB-E46-002
Ships in 3 Business Days
New Item
$ 1,127.99 USD
$ 1,127.99 USD
Don’t let a plastic cooling system stand between you and the road.