Stainless steel impeller and 20% increase in flow!
When it comes to cooling, Stewart is the final word in high performance pumps. The ultimate in BMW cooling with a limited lifetime warranty!
Brand:
ES#:
2581452
Mfg#:
888010330
In Stock
$219.99
This product was last offered at the strikethrough price on 06-15-2026
Retains OEM fitment with superior looks and durability. Includes stainless steel hose clamps and pre-installed factory style connectors.
10X Entries Into Our F80 M3 Sweepstakes
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
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
Looks, performance, and reliability - upgrade your cooling system today!
10X Entries Into Our F80 M3 Sweepstakes Upgrade over the OE achilles heel plastic sides and easily-stripped plastic drain plug.
Brand:
ES#:
3023150
Mfg#:
006084ECS01AKT
In Stock
ON SALE!
SAVE 25%
$420.99
This product was last offered at the strikethrough price on 06-13-2026
The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind.
10X Entries Into Our F80 M3 Sweepstakes
Brand:
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
The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind.
10X Entries Into Our F80 M3 Sweepstakes
Brand:
ES#:
5425426
Mfg#:
050595LA03
Ships on Oct 5, 2026
ON SALE!
SAVE 20%
$509.99
This product was last offered at the strikethrough price on 06-13-2026
Featuring an all-aluminum tank and core. Lower engine temperatures mean more power and longer life of engine components!
2X Entries Into Our F80 M3 Sweepstakes
The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind.
10X Entries Into Our F80 M3 Sweepstakes
Brand:
ES#:
4876028
Mfg#:
054921LA02
In Stock
ON SALE!
SAVE 15%
$458.99
This product was last offered at the strikethrough price on 06-13-2026
Retains OEM fitment with superior looks and durability!
10X Entries Into Our F80 M3 Sweepstakes Includes new connectors - don't reuse brittle, high mileage plastic connectors!
Brand:
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
Track-tested and street-ready—the ULTIMATE cooling system upgrade for your E46 M3!
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
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.
Lifetime Replacement
