Composed of genuine Audi parts to fix your leaking coolant 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#:
2785283
Mfg#:
4E0121403GKT
Ships in 1-2 days
$174.99
This product was last offered at the strikethrough price on 10-26-2026
Expansion tank line that connects to the inner nipple next to the cap.
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 production dates from 01/02/2016
Brand:
ES#:
3139311
Mfg#:
4G0121081EP
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.
$38.99
This product was last offered at the strikethrough price on 08-31-2026
Includes cap
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! Up to production date 3/11/2008
Does not include cap
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
Replace at the first signs of leakage
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
Brand:
ES#:
315416
Mfg#:
1K0122109AL
Ships in 4 Business Days
$83.99
This product was last offered at the strikethrough price on 05-07-2026
Plastic reservoir for the coolant system, does not include the cap
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Brand:
ES#:
3709132
Mfg#:
8V0121407A
Ships in 9 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.
$188.99
This product was last offered at the strikethrough price on 08-31-2026
Replace a broken connector to restore function
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 2 pin connector for the coolant expansion tank level sensor
Plastic reservoir for the 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!
Replace at the first signs of leakage
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 TSI engines only
Brand:
ES#:
315284
Mfg#:
1K0121109AK
Ships in 1 Business Day
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$29.38
This product was last offered at the strikethrough price on 05-07-2026
Includes integrated coolant level sensor
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!
Plastic reservoir for the cooling 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!
Coolant level sensor enclosed in 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!
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 From VIN 8D-W-007800, split is in the 1998 model year
Brand:
ES#:
2580983
Mfg#:
8D0121403LKT1
Ships in 1-2 days
ON SALE!
$49.99
This product was last offered at the strikethrough price on 05-02-2026
Install a brand new expansion tank with a new cap and 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 From VIN 8D-W-007800, split is in the 1998 model year
Brand:
ES#:
2580975
Mfg#:
8D0121403LKT
Ships in 1-2 days
$174.99
This product was last offered at the strikethrough price on 09-03-2026
Connects to the lower radiator 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 Connects lower radiator hose to the coolant expansion tank hose and water pump hose
Brand:
ES#:
470540
Mfg#:
N90692901
Ships in 1-2 days
15% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$32.99
This product was last offered at the strikethrough price on 10-05-2026
Clean up your engine bay or replaced your cracked unit with a new coolant 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
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
