Install a new o-ring for a proper seal. 36x3.15
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 Seal between coolant flanges
Brand:
ES#:
274529
Mfg#:
037121687
In Stock
30% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$7.08
This product was last offered at the strikethrough price on 10-28-2026
Clean up your engine bay or replace your cracked unit with a new coolant expansion tank replacement kit.
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#:
2762975
Mfg#:
1J0121407FKT
Ships Today
$98.12
This product was last offered at the strikethrough price on 09-03-2026
Includes all needed to plug a sensor hole
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
1 large 4 pin connector and 1 small 14 pin connector
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! For vehicles with VIN from 9M-Y-000 001 only, split is in the 2000 model year
Keep proper pressure in your coolant system
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#:
4818658
Mfg#:
5Q0121321
In Stock
ON SALE!
SAVE 31%
$15.99
This product was last offered at the strikethrough price on 09-16-2026
1 large 4 pin connector and 1 small 10 pin connector
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 a 10 pin connector with VIN up to 9M-X-999 000 only, split is in the 1999 model year
Brand:
ES#:
9854
Mfg#:
1J0919506E
Back Ordered
$177.99
This product was last offered at the strikethrough price on 05-07-2026
When replacing or reinstalling your radiator do not reuse your old, worn radiator mounts.
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 factory air conditioning
Brand:
ES#:
2771044
Mfg#:
1J0806155EKT3
Ships in 1 day
$176.99
This product was last offered at the strikethrough price on 08-31-2026
1 large 4 pin connector and 1 small 14 pin connector
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 VIN from 9M-Y-000 001 only, split is in the 2000 model year.
Common source of undiscoverable coolant leaks
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 For vehicles with ALH engine code only
Brand:
ES#:
4939952
Mfg#:
068117021B
In Stock
ON SALE!
SAVE 22%
$26.99
This product was last offered at the strikethrough price on 05-02-2026
Upper 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 For vehicles with manual transmission from the 2002 model year
Brand:
ES#:
307259
Mfg#:
1J0122101A
Ships in 10 Business Days
12% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$189.99
This product was last offered at the strikethrough price on 08-31-2026
Keep your cooling system working at its best by keeping it clean and free of rust and scale deposits. Includes new expansion tank cap, flush treatment & G13 coolant.
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#:
2784778
Mfg#:
CO0LANTFLUSHKT1
In Stock
ON SALE!
SAVE 10%
$59.99
This product was last offered at the strikethrough price on 06-16-2026
Located on the left side of the cylinder head
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 BEW engine code and automatic transmission only
Brand:
ES#:
275137
Mfg#:
038121133J
Ships in 1 day
13% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$183.99
This product was last offered at the strikethrough price on 10-05-2026
"Long Life" Timing Belt
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 BEW engine code only
Brand:
ES#:
275061
Mfg#:
038109119P
Ships in 1 day
12% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$181.99
This product was last offered at the strikethrough price on 08-31-2026
Located on the left side of the cylinder head
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 ALH engine code and automatic transmission only
Brand:
ES#:
275133
Mfg#:
038121132C
Ships in 1 Business Day
33% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$119.99
This product was last offered at the strikethrough price on 05-07-2026
Optimize your engine cooling system performance and heater output with quality drive belts, coolant hoses, cooling system parts, and approved coolant fluids from ECS Tuning. Head off expensive repairs and untimely breakdowns with regularly scheduled cooling system inspection and maintenance.
Lifetime Replacement
