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BMW E46 M3 S54 3.2L

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BMW E46 M3 S54 3.2L Performance Engine Cooling Parts

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E46 M3 Heavy Duty Aluminum Expansion Tank Kit

ES#4876067 - 008682LA02 - E46 M3 Heavy Duty Aluminum Expansion Tank Kit - The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind. - Turner Motorsport - BMW
ECS Tuning recommends this product.

The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4876067
Mfg#:
008682LA02
In Stock
ON SALE! SAVE 20%
$434.99

This product was last offered at the strikethrough price on
06-13-2026

$347.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 Triple-Pass Aluminum Radiator

ES#4830823 - 004268LA01 - E46 M3 Triple-Pass Aluminum Radiator - Track-tested and street-readythe ULTIMATE cooling system upgrade for your E46 M3! - Turner Motorsport - BMW

Track-tested and street-ready—the ULTIMATE cooling system upgrade for your E46 M3! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
10X Entries For Our Spin To Win Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4830823
Mfg#:
004268LA01
Back Ordered
Auto Notify
$604.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Wetter Coolant Additive - 12oz

ES#261427 - 80204 - Water Wetter Coolant Additive - 12oz - Reduces coolant temperatures by as much as 30*F - Redline - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Reduces coolant temperatures by as much as 30*F affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Redline - Corporate Logo
ES#:
261427
Mfg#:
80204
In Stock
$15.99 USD
Free Shipping
on orders $49 and up

Silicone Radiator Hose Kit

ES#2748020 - 003631ECS01 - Silicone Radiator Hose Kit - Retains OEM fitment with superior looks and durability! - ECS - BMW

Retains OEM fitment with superior looks and durability! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Includes new connectors - don't reuse brittle, high mileage plastic connectors!

Brand:
ECS - Corporate Logo
ES#:
2748020
Mfg#:
003631ECS01
In Stock
ON SALE! SAVE 25%
$198.99

This product was last offered at the strikethrough price on
06-13-2026

$149.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Essentials Bundle - Cooling System

ES#5435258 - MMB-E46-001 - Essentials Bundle - Cooling System - An all-in-one cooling solution designed to replace the most common failure points in the E46 chassis. - Mishimoto - BMW

An all-in-one cooling solution designed to replace the most common failure points in the E46 chassis. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
5435258
Mfg#:
MMB-E46-001
Ships in 3 Business Days
$1108.99 USD

ECS Silicone Hose Kit

ES#3236075 - 003631ECS01KT - ECS Silicone Hose Kit - Includes upper and lower radiator hoses, Water Pipe Connecting Line and Aluminum Coolant Bleeder Screw - ECS - BMW

Includes upper and lower radiator hoses, Water Pipe Connecting Line and Aluminum Coolant Bleeder Screw affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3236075
Mfg#:
003631ECS01KT
In Stock
ON SALE! SAVE 25%
$364.99

This product was last offered at the strikethrough price on
06-13-2026

$273.25 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

SuperCool Performance Coolant - Concentrate - 1 Gallon

ES#4338528 - 81205 - SuperCool Performance Coolant - Concentrate - 1 Gallon - Redline's state of the art coolant offering premium performance and protection. Fortified with Waterwetter! - Redline - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Redline's state of the art coolant offering premium performance and protection. Fortified with Waterwetter! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Redline - Corporate Logo
ES#:
4338528
Mfg#:
81205
In Stock
$68.99 USD
Free Shipping
on orders $49 and up

SuperCool Performance Coolant - Pre-Mixed - 1 Gallon

ES#4338527 - 81215 - SuperCool Performance Coolant - Pre-Mixed - 1 Gallon - Redline's state of the art coolant offering premium performance and protection. Fortified with Waterwetter! - Redline - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Redline's state of the art coolant offering premium performance and protection. Fortified with Waterwetter! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Redline - Corporate Logo
ES#:
4338527
Mfg#:
81215
In Stock
$54.99 USD
Free Shipping
on orders $49 and up

AFe POWER BladeRunner OER Series Radiator

ES#4852446 - 46-53241 - AFe POWER BladeRunner OER Series Radiator - Drop your corroding plastic radiator with this aluminum- core replacement! - AFE - BMW

Drop your corroding plastic radiator with this aluminum- core replacement! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AFE - Corporate Logo
ES#:
4852446
Mfg#:
46-53241
Ships in 1 Business Day
ON SALE! SAVE 13%
$258.99

This product was last offered at the strikethrough price on
03-10-2026

$224.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 Performance Aluminum Radiator

ES#2766394 - MMRADE4601 - E46 M3 Performance Aluminum Radiator - Fully brazed two-row aluminum core with TIG-welded end tanks - Mishimoto - BMW

Fully brazed two-row aluminum core with TIG-welded end tanks affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
25% increase in coolant capacity with a 32% increase in coolant surface area!

Brand:
Mishimoto - Corporate Logo
ES#:
2766394
Mfg#:
MMRADE4601
Ships in 3 Business Days
$721.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Mishimoto Liquid Chill Radiator Coolant Additive - 4oz

ES#2764643 - MMRALC - Mishimoto Liquid Chill Radiator Coolant Additive - 4oz - Pairs with all types of coolant to increase heat transfer and decrease engine temps. - Mishimoto - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Pairs with all types of coolant to increase heat transfer and decrease engine temps. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2764643
Mfg#:
MMRALC
In Stock
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Purple Ice - 12oz

ES#2793046 - 01600 - Purple Ice - 12oz - High performance coolant conditioner - Royal Purple - Audi BMW Volkswagen Mercedes Benz MINI Porsche

High performance coolant conditioner affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Royal Purple - Corporate Logo
ES#:
2793046
Mfg#:
01600
In Stock
$12.99 USD
Free Shipping
on orders $49 and up

Liquid Chill Premixed Synthetic Engine Coolant - 64oz

ES#3676995 - MMRALC505064F - Liquid Chill Premixed Synthetic Engine Coolant - 64oz - Perfect for a top off any time you need it! - Mishimoto - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Perfect for a top off any time you need it! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
3676995
Mfg#:
MMRALC505064F
In Stock
$28.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 Red Silicone Radiator Hose Kit

ES#2764189 - MMHOSEE4699RD - E46 M3 Red Silicone Radiator Hose Kit - Kit includes upper and lower radiator hoses - Mishimoto - BMW

Kit includes upper and lower radiator hoses affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2764189
Mfg#:
MMHOSEE4699RD
In Stock at Vendor
$121.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 Black Silicone Radiator Hose Kit

ES#2765220 - MMHOSEE4699BK - E46 M3 Black Silicone Radiator Hose Kit - Kit includes upper and lower radiator hoses - Mishimoto - BMW

Kit includes upper and lower radiator hoses affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2765220
Mfg#:
MMHOSEE4699BK
In Stock at Vendor
$121.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 Blue Silicone Radiator Hose Kit

ES#2764954 - MMHOSEE4699BL - E46 M3 Blue Silicone Radiator Hose Kit - Kit includes upper and lower radiator hoses - Mishimoto - BMW

Kit includes upper and lower radiator hoses affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2764954
Mfg#:
MMHOSEE4699BL
In Stock at Vendor
$121.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Engine Cooling Parts

Looking to mitigate high temperatures under hard driving or from serious engine upgrades? Our performance cooling system upgrades like radiators, silicone hoses, upgraded water pumps, low-temperature thermostats, electric fan conversions, and more are just what you need to keep those temps down for longer.

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Manufacturer names and/or part numbers are used only for identification purposes.

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