Includes sealing O-Ring
5X 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 We Price Match - Give Us A Call or Chat! Lower temperature thermostat, stock is 87°C
Plastic pressure cap for expansion tank
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 We Price Match - Give Us A Call or Chat!
For the belt driven auxiliary fan
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Keep proper pressure in your coolant system
5X 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 We Price Match - Give Us A Call or Chat!
Connects the lower radiator port to the thermostat housing
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Connects the auxiliary water pump to the coolant pipe under the intake manifold
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Seals the connection between the oil cooler and the engine
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 From VIN-8E-4-200001, split is in the 2004 model year
M5x12 - Secures the radiator to the mounting bracket
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Replace cracked tanks.
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Replacement 4 pin relay
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 Used for fan control
Replacement 4 pin relay
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 Used for fan control
Brand:
ES#:
3437884
Mfg#:
4H0951253
Ships in 2 Business Days
$12.99
This product was last offered at the strikethrough price on 07-15-2026
Ensure a proper seal when installing a new water pump
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#:
3479
Mfg#:
078121043A
Ships in 1-2 days
$8.99
This product was last offered at the strikethrough price on 08-13-2026
Seals the expansion tank cap to the reservoir. 28.5x3.8
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M6x18 bolt used in various areas on your European vehicle
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 Secures oil cooler to block
Optimize your engine cooling system performance and heater output with quality drive belts, coolant hoses, cooling system parts, and approved coolant fluids from ECS Tuning. Head off expensive repairs and untimely breakdowns with regularly scheduled cooling system inspection and maintenance.
Lifetime Replacement
