Common point of failure or leaking for the cooling system
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High-flow OE-style design for optimal engine cooling performance
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!
Keep your cooling system efficient with a new thermostat, housing and o-ring
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 Fits from production date 6/16/17
Brand:
ES#:
4842735
Mfg#:
07K121111ELT1KT
Ships in 1 Business Day
ON SALE!
$461.99
This product was last offered at the strikethrough price on 05-02-2026
Keep your cooling system efficient
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#:
3149392
Mfg#:
06H121113B
In Stock
$36.99
This product was last offered at the strikethrough price on 10-22-2026
Regulates flow of coolant according to temperature
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 engine code CRUA/ CVCA
Brand:
ES#:
4030975
Mfg#:
04L121026AH
Ships in 1 day
9% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$236.99
This product was last offered at the strikethrough price on 10-05-2026
Maintain proper operating temperature with a new thermostat, housing 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
Brand:
ES#:
3651498
Mfg#:
06E121111ALKTKT4
In Stock
ON SALE!
SAVE 15%
$82.99
This product was last offered at the strikethrough price on 05-02-2026
O-Ring between thermostat housing and cylinder head
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Located on the block near the coolant regulator
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Brand:
ES#:
279940
Mfg#:
06B103033A
In Stock
23% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$24.59
This product was last offered at the strikethrough price on 10-28-2026
Install new hardware with your new parts. M8x16
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 Secures hard coolant return pipe to the thermostat assembly
Brand:
ES#:
468761
Mfg#:
N10668401
In Stock
3% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$5.40
This product was last offered at the strikethrough price on 10-28-2026
Keep your cooling system efficient
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 the complete housing and gasket
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#:
1851566
Mfg#:
07K121115D
Ships in 4 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.
$438.99
This product was last offered at the strikethrough price on 10-26-2026
Must be replaced when replacing the thermostat
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Brand:
ES#:
284820
Mfg#:
079121119
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.
$22.99
This product was last offered at the strikethrough price on 10-05-2026
Bring your car to operating temperature.
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 3A Engine Code Only
Brand:
ES#:
5335359
Mfg#:
044121113
In Stock
ON SALE!
SAVE 15%
$14.99
This product was last offered at the strikethrough price on 09-16-2026
Bring your car to operating temperature.
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! 3A Engine Code Only
Brand:
ES#:
6391
Mfg#:
044121113
In Stock
$25.59
This product was last offered at the strikethrough price on 10-26-2026
Your thermostat helps regulate engine temperatures by allowing the coolant to circulate through the radiator once it opens. If it fails, this might mean it never closes, but worst case, it could mean your coolant doesn't get to the radiator. Stay ahead of cooling issues by replacing your thermostat regularly with an OEM thermostat or quality aftermarket thermostat from our selection.
Lifetime Replacement
