Includes a tank, cap, and necessary mounting hardware
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Brand:
ES#:
2581883
Mfg#:
1K0121407AKT1
In Stock
ON SALE!
SAVE 19%
$34.99
This product was last offered at the strikethrough price on 05-02-2026
Wrap your coolant ball, top to bottom, with carbon fiber!
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Brand:
ES#:
3575799
Mfg#:
025263ECS01-01
In Stock
ON SALE!
$239.99
This product was last offered at the strikethrough price on 06-13-2026
Doesn't your pride and joy deserve better than plastic parts in the engine bay?
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Brand:
ES#:
3188199
Mfg#:
VWR19G703
In Stock
ON SALE!
SAVE 10%
$120.99
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#:
253082
Mfg#:
3B0121321
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.
$37.18
This product was last offered at the strikethrough price on 09-03-2026
Select your own expansion tank cap to go along with your ECS Carbon Fiber Expansion Tank Cover Kit
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
Pair of plastic coolant lines between the auxiliary water pump and lower expansion tank hose
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Brand:
ES#:
4818598
Mfg#:
1K0121070BD
In Stock
ON SALE!
SAVE 20%
$38.99
This product was last offered at the strikethrough price on 05-02-2026
Includes a tank, cap, cap seal and necessary mounting hardware
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#:
2575826
Mfg#:
1K0121407AKT
In Stock
$120.99
This product was last offered at the strikethrough price on 09-03-2026
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 We Price Match - Give Us A Call or Chat!
Connects to the coolant level sensor built into the expansion tank
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Brand:
ES#:
311321
Mfg#:
1J0973202
Ships in 2 Business Days
9% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$42.99
This product was last offered at the strikethrough price on 10-26-2026
See your coolant levels clearly again, comes with coolant level sensor
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Pair of plastic coolant lines between the auxiliary water pump and lower expansion tank hose
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!
Brand:
ES#:
4172032
Mfg#:
1K0121070BD
In Stock
$52.99
This product was last offered at the strikethrough price on 10-22-2026
Keep proper pressure in your coolant system
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!
Install new hardware with your new parts.
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
Includes a tank, cap, cap seal and necessary mounting 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#:
2598389
Mfg#:
1K0121407A
Ships in 1 day
$335.68
This product was last offered at the strikethrough price on 10-26-2026
Install new hardware with your new parts, 2 Required. 5x20
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#:
470958
Mfg#:
N90846602
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.
$3.99
This product was last offered at the strikethrough price on 10-26-2026
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
