Sierra® Thermostat Kit for Cobra® 4.3L, 4.3HO, 5.0L, 5.8L, and 5.8L EFI, 1991 - 1997

Item # WX2-167167

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Buyer's Club $24.29 Non-Member $26.99
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Details & Specs

Sierra® Thermostat Kit for Cobra® 4.3L, 4.3HO, 5.0L, 5.8L, and 5.8L EFI Engines, 1991 - 1997.

Proper thermostat operation is key in getting peak engine performance and maximum fuel efficiency!

This marine-grade Kit will withstand the rigors of "ugly" brackish and saltwater. Sierra® Thermostat Kit (part no. 18-3677) replaces your original thermostat, thermostat gasket, and o-ring.

Kit contains:
  • Thermostat - replaces O.E.M. part no. 3856961
  • Thermostat Gasket (part no. 18-2917) - replaces O.E.M. part no. 3852111
  • O-ring (part no. 18-7170) - replaces O.E.M. part no. 3852071.

Order up top-quality replacement parts for bottom dollar ONLINE today!


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Order up top-quality replacement parts for bottom dollar ONLINE today!


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