Ditch the weak, factory plastic coolant expansion tank and free up space on the hot side of your engine bay!
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply Compatible with factory/aftermarket cold side intakes as well as hot side intakes!
Brand:
ES#:
3647095
Mfg#:
021942TMS13
In Stock
ON SALE!
SAVE 15%
$815.99
This product was last offered at the strikethrough price on 05-02-2026
Upgrade to a much more durable connection from your cylinder head to your thermostat! Commonly referred to as a "Mickey Mouse" flange/adapter.
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
3552811
Mfg#:
024797ECS01
In Stock
ON SALE!
SAVE 25%
$76.99
This product was last offered at the strikethrough price on 06-13-2026
Reduce oil temperatures with an upgraded billet housing and low-temp thermostat! Allows you to add an oil cooler to your vehicle that didn't have the factory option.
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
4809843
Mfg#:
008731LA01KT
In Stock
ON SALE!
SAVE 25%
$343.99
This product was last offered at the strikethrough price on 06-13-2026
The MSL thermostat ensures a cooler oil temperature which will result in more stable performance
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Replaces the stock plastic flange found in the thermostat to cylinder head coolant hose that is known to fail
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
The MSL thermostat ensures a cooler oil temperature which will result in more stable performance
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Serious engine oil cooling for the most demanding engines
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For custom applications only. Not a direct bolt on.
Features A CSF High Performance Radiator and must have upgraded silicone cooling lines needed for a confidence inspiring cooling enhancement.
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
4730412
Mfg#:
17117547059EKT
In Stock
ON SALE!
$1115.99
This product was last offered at the strikethrough price on 06-16-2026
Retains OEM fitment with superior looks and durability. Pre-assembled with factory connectors for easy installation!
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
5335373
Mfg#:
018739LA02
In Stock
ON SALE!
SAVE 20%
$189.99
This product was last offered at the strikethrough price on 06-13-2026
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.
2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Reduces coolant temperatures by as much as 30*F
Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Easily upgrade your N52 with our bolt-in 400W N54 water pump conversion that doubles overall flow and improves cooling system efficiency.
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
5425471
Mfg#:
044952LA04KT
In Stock
ON SALE!
SAVE 25%
$477.99
This product was last offered at the strikethrough price on 06-13-2026
Easily upgrade your N52 with our bolt-in 400W N54 water pump conversion that doubles overall flow and improves cooling system efficiency.
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Features A CSF High Performance Radiator and must have upgraded silicone cooling lines needed for a confidence inspiring cooling enhancement.
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Brand:
ES#:
4730418
Mfg#:
17117558480EKT
In Stock
ON SALE!
$1048.99
This product was last offered at the strikethrough price on 05-02-2026
A more advanced refresh kit - with primary cooling system hoses and accessory belt
10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply For vehicles with automatic or DCT transmission only
Brand:
ES#:
2597716
Mfg#:
11510392553RKT
In Stock
ON SALE!
SAVE 20%
$832.99
This product was last offered at the strikethrough price on 05-02-2026
Upgrade your cooling system with a bigger, more efficient, radiator, electric fan conversion, water pump, lower-temperature thermostat, and cooling system additives to combat the enemy of performance.
Lifetime Replacement
