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BMW E23 735i M30 3.4L

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BMW E23 735i M30 3.4L Engine Thermostat Parts

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Thermostat O-Ring

ES#264081 - 11531250399 - Thermostat O-Ring - Used to seal the thermostat - Elring - BMW

Used to seal the thermostat 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with production date up to 09/1985

Brand:
Elring - Corporate Logo
ES#:
264081
Mfg#:
11531250399
In Stock
$2.05 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring - Thermostat Housing

Replacement o-ring

Brand:
Victor Reinz - Corporate Logo
ES#:
3039858
Mfg#:
11531250399
In Stock at Vendor
$3.99

This product was last offered at the strikethrough price on
05-07-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

Ensure a proper seal when installing your new thermostat 2X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date up to 09/1998

Brand:
Elring - Corporate Logo
ES#:
5340689
Mfg#:
N90136802
Special Order: No Guaranteed ETA
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Thermostat - Includes Sealing Gasket

ES#5480734 - 028 280 0004 - Coolant Thermostat - Includes Sealing Gasket - Restore your cooling system's factory efficiency with this premium replacement thermostat from Meyle. - Meyle - BMW

Restore your cooling system's factory efficiency with this premium replacement thermostat from Meyle. 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Meyle - Corporate Logo
ES#:
5480734
Mfg#:
028 280 0004
Ships on Oct 30, 2026
Auto Notify
$11.99 USD
Free Shipping
on orders $49 and up

Thermostat - 80°C

ES#4070104 - 11531254065 - Thermostat - 80C - Stop your overheating problem. - Mahle - BMW

Stop your overheating problem.

Brand:
Mahle - Corporate Logo
ES#:
4070104
Mfg#:
11531254065
Back Ordered
$22.99

This product was last offered at the strikethrough price on
05-07-2026

$21.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Thermostat Parts

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.

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Manufacturer names and/or part numbers are used only for identification purposes.

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