Stainless steel impeller and 20% increase in flow!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms When it comes to cooling, Stewart is the final word in high performance pumps. The ultimate in BMW cooling with a limited lifetime warranty!
The MSL thermostat ensures a cooler oil temperature which will result in more stable performance
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Looks, performance, and reliability - upgrade your cooling system today!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! Upgrade over the OE achilles heel plastic sides and easily-stripped plastic drain plug.
The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind.
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Brand:
ES#:
4876067
Mfg#:
008682LA02
In Stock
ON SALE!
SAVE 15%
$425.99
This product was last offered at the strikethrough price on 05-02-2026
The factory ducting and shrouds are all reused with no modifications necessary.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
Finally, a durable, attractive water pump pulley that won't break!
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Provides a bolt-on 8% water pump overdrive to increase cooling.
Brand:
ES#:
2855687
Mfg#:
001977ECS03A
In Stock
ON SALE!
$101.99
This product was last offered at the strikethrough price on 05-02-2026
Ultra-efficient dual-core, triple-pass radiator from the leader in E46 M3 cooling. Cooler engine temps mean more power and longer life of engine components.
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Includes housing and sealing o-ring
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat! Low-temp thermostat reduces stresses on engine components and improves performance
Brand:
ES#:
2807159
Mfg#:
11537586885-90C
In Stock
$117.99
This product was last offered at the strikethrough price on 12-11-2025
Keep intake temperatures low with this dual-core heat exchanger!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! Drop-in fitment that requires no modifications
Retains OEM fitment with superior looks and durability!
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Brand:
ES#:
2718145
Mfg#:
003628ECS01
In Stock
ON SALE!
SAVE 20%
$110.99
This product was last offered at the strikethrough price on 05-02-2026
Featuring an all-aluminum tank and core. Lower engine temperatures mean more power and longer life of engine components!
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Keep your engine oil tempratures in check even under the harshest of track conditions with CSF's performance S58 oil cooler!
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Track-tested and street-ready—the ULTIMATE cooling system upgrade for your E46 M3!
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Oil coolers and transmission coolers help keep fluid temperatures in check on the street and track. Replace leaky or failed oil coolers and transmission coolers with an OEM or aftermarket unit to get back on the road or upgrade to a performance oil cooler or transmission cooler for better temperature control.
Lifetime Replacement
