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BMW M3 Radiator Parts

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N54/N55 Low Temp Oil Thermostat Kit - 70c

ES#4817856 - n54n55ltKT - N54/N55 Low Temp Oil Thermostat Kit - 70c - New billet thermostat cover, hardware and gasket. Featuring a low temp thermostat - 40 degrees Celsius/ 72 degrees Fahrenheit lower than factory. - Assembled By ECS - BMW

New billet thermostat cover, hardware and gasket. Featuring a low temp thermostat - 40 degrees Celsius/ 72 degrees Fahrenheit lower than factory. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4817856
Mfg#:
N54N55LTKT
Back Ordered
Auto Notify
ON SALE! SAVE 20%
$152.99

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

$122.38 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

High-Performance Auxiliary Radiator - G8X M3/M4/M2

ES#4876812 - 8321 - High-Performance Auxiliary Radiator - G8X M3/M4/M2 - Lower charge air cooling temps and/or engine coolant temps with CSF's direct fit auxiliary radiators - Radiators sold individually, two required for a complete system upgrade - CSF - BMW

Lower charge air cooling temps and/or engine coolant temps with CSF's direct fit auxiliary radiators - Radiators sold individually, two required for a complete system upgrade affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CSF - Corporate Logo
ES#:
4876812
Mfg#:
8321
In Stock
7% off MSRP

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

$519.00

This product was last offered at the strikethrough price on
06-04-2026

$485.00 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

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
$592.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

DO88 Race Oil Cooler - E90/E92 M3

ES#4656906 - OC100 - DO88 Race Oil Cooler - E90/E92 M3 - The perfect oil cooler for the track and on the street! - DO88 - BMW

The perfect oil cooler for the track and on the street! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
DO88 - Corporate Logo
ES#:
4656906
Mfg#:
OC100
In Stock at Vendor
$782.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E9x M3 High Performance Aluminum Radiator

ES#2992661 - 7059 - E9x M3 High Performance Aluminum Radiator - Ultra-efficient dual-core, triple-pass radiator from the leader in E9X M3 cooling. Cooler engine temps mean more power and longer life of engine components. - CSF - BMW

Ultra-efficient dual-core, triple-pass radiator from the leader in E9X M3 cooling. Cooler engine temps mean more power and longer life of engine components. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CSF - Corporate Logo
ES#:
2992661
Mfg#:
7059
In Stock
$685.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Performance Aluminum Radiator with Silicone Radiator Hoses

ES#3023151 - 006084ECS01AKT1 - High Performance Aluminum Radiator with Silicone Radiator Hoses - Looks, performance, and reliability - upgrade your cooling system today! Includes ECS radiator, silicone houses, plus coolant and hose clamps. - ECS - BMW

Looks, performance, and reliability - upgrade your cooling system today! Includes ECS radiator, silicone houses, plus coolant and hose clamps. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3023151
Mfg#:
006084ECS01AKT1
Ships on Jul 20, 2026
Auto Notify
ON SALE! SAVE 30%
$567.99

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

$395.77 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Universal 16" Electric Fan - Black

ES#2652188 - 30102049 - Universal 16" Electric Fan - Black - 2024 CFM. High performance puller fan with curved blades. - Spal - Audi BMW MINI

2024 CFM. High performance puller fan with curved blades. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Spal - Corporate Logo
ES#:
2652188
Mfg#:
30102049
In Stock
$207.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

F8X High Performance Aluminum Heat Exchanger

ES#4920939 - 050626LA01 - F8X High Performance Aluminum Heat Exchanger - Direct-fit upgrade over OEM! Reduce IATs & boost reliability with durable all-aluminum construction. - Turner Motorsport - BMW

Direct-fit upgrade over OEM! Reduce IATs & boost reliability with durable all-aluminum construction. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4920939
Mfg#:
050626LA01
In Stock
ON SALE! SAVE 15%
$499.99

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

$424.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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%
$194.99

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

$146.24 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Adjustable Fan Controller Kit

ES#2816698 - MMFANCNTLUPROBE - Adjustable Fan Controller Kit - Fine-tune your cooling system - Mishimoto - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Fine-tune your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2816698
Mfg#:
MMFANCNTLUPROBE
In Stock
9% off MSRP

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

$98.00

This product was last offered at the strikethrough price on
06-04-2026

$88.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler

ES#4069976 - MM0C-F80-15 - Oil Cooler - Direct fit for the 20152020 BMW F8X M3 and M4 - Mishimoto - BMW

Direct fit for the 2015–2020 BMW F8X M3 and M4 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
4069976
Mfg#:
MM0C-F80-15
In Stock
$609.99

This product was last offered at the strikethrough price on
05-08-2026

$549.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal 16" Electric Fan - Black

ES#2764562 - MMFAN16 - Universal 16" Electric Fan - Black - 1934 CFM - 10.8 amps at 12.14 volts - Mishimoto - Audi BMW Volkswagen MINI

1934 CFM - 10.8 amps at 12.14 volts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2764562
Mfg#:
MMFAN16
In Stock at Vendor
$115.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Aluminum Radiator - E90/92 M3

ES#4656920 - WC190 - Aluminum Radiator - E90/92 M3 - Let your engine breathe better with this DO88 Radiator! - DO88 - BMW

Let your engine breathe better with this DO88 Radiator! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
DO88 - Corporate Logo
ES#:
4656920
Mfg#:
WC190
In Stock at Vendor
$712.00 USD
This product is lifetime replacement eligible Lifetime Replacement

S55 Front Mount Heat Exchanger - F8X S55

ES#4338826 - 10803020 - S55 Front Mount Heat Exchanger - F8X S55 - Replace your inefficient factory front-mounted heat exchanger - VRSF - BMW

Replace your inefficient factory front-mounted heat exchanger affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
VRSF - Corporate Logo
ES#:
4338826
Mfg#:
10803020
Ships in 1 Business Day
$499.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Radiator Parts

Keep it cool with a new radiator or upgrade for better cooling capacity with aftermarket performance radiator options.

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