Allows the coolant system to vent into the expansion tank
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Brand:
ES#:
4818652
Mfg#:
4F0121107AG
In Stock
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$40.99
This product was last offered at the strikethrough price on 05-02-2026
Replace at the first signs of leakage
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Replace your old coolant tank and stop those pesky leaks
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#:
4151835
Mfg#:
8E0121403A
Ships in 4 Business Days
$29.99
This product was last offered at the strikethrough price on 10-22-2026
Plastic reservoir for the cooling system
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Plastic pressure cap for expansion tank
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Includes integrated coolant level sensor
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 VIN 8D-W-007799, split is in the 1998 model year
Includes integrated coolant level sensor, does not include cap
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Keep proper pressure in your coolant system
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Install new hardware with your new parts. 4.8x16
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Brand:
ES#:
4939993
Mfg#:
N90775001
Special Order: No Guaranteed ETA
ON SALE!
SAVE 17%
$30.99
This product was last offered at the strikethrough price on 05-02-2026
Connects the expansion tank to the hard water pipe
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Includes integrated coolant level sensor
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! Up to VIN 8D-W-007799, split is in the 1998 model year
Replace cracked tanks.
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Seals the expansion tank cap to the reservoir. 28.5x3.8
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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
