Victor Reinz Victor Reinz Thermostat O-Ring (Square) - E34 M5 11531312635

Victor Reinz Thermostat O-Ring (Square) - E34 M5

When replacing your thermostat, the o-ring often gets damaged, lost, or is degraded due to heat and years of exposure to hot coolant. Seal your new thermostat with a new o-ring to ensure leak free installation. During your thermostat change fluid loss is inevitable, be sure to browse the website to get the proper fluid sent directly to your door. Also, as the thermostat housing is often broken or warped during removal, check yours out before ordering and have the new housing ready.
Victor Reinz Victor Reinz
T#: 591756 | Part#: 11531312635
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Ships on Jun 23, 2026
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Victor Reinz Victor Reinz Thermostat O-Ring (Square) - E34 M5 11531312635
Victor Reinz Thermostat O-Ring (Square) - E34 M5
$4.07

When replacing your thermostat, the o-ring often gets damaged, lost, or is degraded due to heat and years of exposure to hot coolant. Seal your new thermostat with a new o-ring to ensure leak free installation.

During your thermostat change fluid loss is inevitable, be sure to browse the website to get the proper fluid sent directly to your door. Also, as the thermostat housing is often broken or warped during removal, check yours out before ordering and have the new housing ready.

Prop 65 WarningProp 65 Warning

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  • 703656800

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If you have any questions, would like to learn more or are ready to place a replacement claim, click here!

MAKE MODEL SUBMODEL ENGINE Special Fitment Notes
BMW E34 M5 S38 3.5L Also use- (Qty.) (1) 11 53 1 312 287 O-Ring.
*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.