Connects the expansion tank to the radiator
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Brand:
ES#:
390031
Mfg#:
4F0121109F
Ships in 1 Business Day
9% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$115.00
This product was last offered at the strikethrough price on 07-09-2026
Plastic reservoir for the coolant system
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Brand:
ES#:
3658435
Mfg#:
8K0121403AC
Ships in 3 Business Days
$58.99
This product was last offered at the strikethrough price on 05-07-2026
Plastic reservoir for the coolant system that includes the cap
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Brand:
ES#:
4149003
Mfg#:
4K0121405AC
Ships in 7 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.
$114.99
This product was last offered at the strikethrough price on 08-31-2026
Connects the water pump/thermostat to the expansion tank
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Brand:
ES#:
382258
Mfg#:
4E0121109N
Ships in 1 Business Day
3% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$101.99
This product was last offered at the strikethrough price on 05-07-2026
Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank replacement kit.
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Brand:
ES#:
2575928
Mfg#:
1J01000-2
In Stock
$98.99
This product was last offered at the strikethrough price on 09-03-2026
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#:
390070
Mfg#:
4F0121403M
Ships on Nov 13, 2026
14% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$110.99
This product was last offered at the strikethrough price on 08-31-2026
Piece that the rubber grommet sits into on the bracket
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Install new hardware with your new parts. M6
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 in securing the coolant expansion tank
Brand:
ES#:
470213
Mfg#:
N90570802
In Stock
19% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$3.55
This product was last offered at the strikethrough price on 10-28-2026
Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank
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#:
5388801
Mfg#:
8D0121403L
In Stock
ON SALE!
SAVE 15%
$23.99
This product was last offered at the strikethrough price on 09-16-2026
Replace your cracked or faded 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!
Connects the expansion tank to the rear flange and water line
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Brand:
ES#:
371811
Mfg#:
4B3121107D
In Stock
10% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$88.99
This product was last offered at the strikethrough price on 10-26-2026
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 Up to production date 5/1/2011
Brand:
ES#:
2678373
Mfg#:
8K0121405FKT
Ships in 1 day
ON SALE!
SAVE 12%
$87.99
This product was last offered at the strikethrough price on 05-02-2026
Connecting hose between the pair of expansion tank pipes and the pipe that connects the water pump to the coolant flange
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Brand:
ES#:
4818599
Mfg#:
1K0121109AL
In Stock
ON SALE!
SAVE 15%
$8.99
This product was last offered at the strikethrough price on 09-16-2026
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.
Lifetime Replacement
