Replace at the first signs of leakage
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 For vehicles with FSI engines only
Replace at the first signs of leakage
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 For vehicles with FSI engines only
Install new hardware with your new parts. 4.8x19
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 to secure the coolant expansion tank
Brand:
ES#:
467231
Mfg#:
N10003203
In Stock
25% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$2.78
This product was last offered at the strikethrough price on 10-15-2026
Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank
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! For Vehicles with CYMC Engine Code Only
Connects the coolant line from the turbo & expansion tank to the water pipe hose
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#:
307175
Mfg#:
1J0121087E
Ships in 1-2 days
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$69.99
This product was last offered at the strikethrough price on 10-05-2026
Plastic reservoir for cooling system
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
Plastic reservoir for cooling system
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
Plastic reservoir for cooling system
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!
Brand:
ES#:
2872375
Mfg#:
8A0121403C
Ships in 1 Business Day
$53.99
This product was last offered at the strikethrough price on 08-13-2026
Plastic reservoir for the cooling system
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#:
4669393
Mfg#:
4F0121403M
Ships in 1 Business Day
$60.99
This product was last offered at the strikethrough price on 10-27-2026
Located between the coolant expansion tank and the cylinder head coolant flange
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
Plastic pressure cap for expansion tank
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#:
2091199
Mfg#:
8E0121321
Ships in 1-2 days
13% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$55.99
This product was last offered at the strikethrough price on 10-26-2026
Keep proper pressure in your coolant system
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#:
300926
Mfg#:
1C9121321
Ships in 3 Business Days
13% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$55.99
This product was last offered at the strikethrough price on 10-05-2026
Install a brand new expansion tank with a new cap and hardware
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#:
2966327
Mfg#:
8D0121403LXKT1
Ships in 1-2 days
ON SALE!
$49.99
This product was last offered at the strikethrough price on 05-02-2026
Connects the expansion tank to the left side water tube
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#:
6051
Mfg#:
8D0121109G
Back Ordered
2% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$48.00
This product was last offered at the strikethrough price on 10-28-2026
Install a brand new expansion tank with a new cap and hardware
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#:
2738904
Mfg#:
8D0121403LKT3
Ships in 1 Business Day
ON SALE!
SAVE 10%
$51.99
This product was last offered at the strikethrough price on 05-02-2026
A common source of overheating problems is a broken or leaking coolant expansion tank. Replace it with an OEM coolant expansion tank or quality aftermarket expansion tank to prevent future woes.
