Attaches from the auxiliary water pump to thermostat housing and expansion tank. Upgraded metal "T" connection!
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Brand:
ES#:
4509171
Mfg#:
11539845352
In Stock
$60.99
This product was last offered at the strikethrough price on 10-21-2026
Mounts towards the front of the engine bay.
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Brand:
ES#:
4818588
Mfg#:
17137823626
In Stock
ON SALE!
SAVE 18%
$47.99
This product was last offered at the strikethrough price on 05-02-2026
Includes everything you need to bolt on a brand new expansion tank
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Brand:
ES#:
2826983
Mfg#:
17137823626KT1
In Stock
ON SALE!
SAVE 19%
$62.99
This product was last offered at the strikethrough price on 05-02-2026
The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind.
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#:
5492242
Mfg#:
059178LA01
In Stock
ON SALE!
$399.99
This product was last offered at the strikethrough price on 08-26-2026
Mounts to the bottom of the 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
Attaches from the auxiliary water pump to thermostat housing and expansion tank. Upgraded metal "T" connection!
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
Includes connector housing with terminals and seals. Commonly used for the coolant level sensor.
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#:
4772597
Mfg#:
61132359999
In Stock
ON SALE!
SAVE 25%
$10.99
This product was last offered at the strikethrough price on 06-13-2026
Mounts to the bottom of the expansion tank
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Brand:
ES#:
4818545
Mfg#:
11537600674
In Stock
ON SALE!
SAVE 22%
$33.99
This product was last offered at the strikethrough price on 09-16-2026
Attaches from the auxiliary water pump to thermostat housing and 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#:
4041118
Mfg#:
11539845352
In Stock
7% 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 10-27-2026
Mounts towards the front of the engine bay
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#:
2166017
Mfg#:
17137823626
Ships in 1-2 days
7% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$129.99
This product was last offered at the strikethrough price on 10-27-2026
Used as a modification to fix the common T fitting
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Brand:
ES#:
4338585
Mfg#:
11539845352KT
In Stock
ON SALE!
SAVE 10%
$34.99
This product was last offered at the strikethrough price on 05-02-2026
Mounts to the bottom of the expansion tank
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Mounts to the bottom of the 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#:
2145167
Mfg#:
11537600674
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.
$64.24
This product was last offered at the strikethrough price on 05-14-2026
Mounts towards the front of the engine bay
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!
Attaches from the auxiliary water pump to thermostat housing and 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#:
4818951
Mfg#:
11539845352
In Stock
ON SALE!
SAVE 15%
$47.99
This product was last offered at the strikethrough price on 09-16-2026
Mounts towards the front of the engine bay
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#:
2874181
Mfg#:
17137823626
In Stock
Limited Qty Sale
$68.32
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.
Lifetime Replacement
