Common cause of oil leaks can be easily repaired
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Common cause of oil leaks can be easily repaired
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Reduces coolant temperatures by as much as 30*F
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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
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Featuring a fully TIG-welded design with a cast endtank. The most reliable, durable, best fitting E9X M3 oil cooler on the market - no trimming of shroud required.
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The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind.
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This product was last offered at the strikethrough price on
05-02-2026
Track-tested and street-ready—the ULTIMATE cooling system upgrade for your E46 M3!
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10X Entries For Our Spin To Win Sweepstakes!
Common cause of oil leaks can be easily repaired
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MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
01-08-2026
Aluminum fan shroud with 16" slim electric fan, fan controller, NPT & Probe style temperature sensors
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This product was last offered at the strikethrough price on
02-22-2026
It's time to get serious about your cooling system!
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This product was last offered at the strikethrough price on
05-02-2026
The perfect oil cooler for the track and on the street!
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194% Increase in Core & Tank Volume & 94% Increase in Fluid Capacity Compared to OEM
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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!
This product was last offered at the strikethrough price on
05-02-2026
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.
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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!
This product was last offered at the strikethrough price on
05-02-2026
Direct-fit upgrade over OEM! Reduce oil temperatures & safeguard your engine from damage with a larger, thicker aluminum core.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
This product was last offered at the strikethrough price on
05-02-2026
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms