HomeBelts and Cooling > Gaskets and Sealing SystemsFel-Pro 35435 Engine Coolant Thermostat Housing Gasket
Part #: 35435

Fel-Pro 35435 Engine Coolant Thermostat Housing Gasket

20 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick, Oldsmobile, and Pontiac, Firenza, Grand Am, LeMans, Optima, Skyhawk, and Sunbird
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Fel-Pro Thermostat Housing Gasket for GM Compact Cars

Fel-Pro 35435 is an engine coolant thermostat housing gasket built for direct sealing service on select Pontiac, Buick, and Oldsmobile applications. It uses application-specific gasket materials to deliver a reliable seal where the thermostat housing meets the engine coolant passage.

Key Features

  • Engine coolant thermostat housing gasket for sealing the thermostat housing interface
  • Application-specific material selection for the listed vehicle applications
  • Supports 100% vehicle sealing when installed on the correct mating surfaces
  • Direct replacement for service on Pontiac Sunbird, Pontiac Grand Am, Pontiac LeMans, Pontiac Optima, Buick Skyhawk, and Oldsmobile Firenza
  • Part number 35435 for easy catalog lookup

Detailed Description

Fel-Pro 35435 is made for cooling system sealing at the thermostat housing, where a precise gasket is needed to help maintain a secure coolant seal. Fel-Pro gaskets are known for using materials matched to the application, which helps the gasket conform to the housing and engine surfaces used on these vehicles. This part cross-references BBB Industries 11201 for the same application. It is a practical choice for service work on 1987-1994 Pontiac Sunbird, 1989-1990 Pontiac LeMans, 1988-1990 Pontiac Optima, 1987-1989 Pontiac Grand Am, 1987-1988 Buick Skyhawk, and 1987-1988 Oldsmobile Firenza. Fel-Pro 35435 is a direct-fit sealing component for these thermostat housing repairs.

What It Helps Fix

  • Coolant seepage at the thermostat housing
  • External coolant leaks around the housing-to-engine joint
  • Sealing issues after thermostat service
  • Loss of coolant from a deteriorated gasket surface
  • Maintenance concerns on Pontiac Sunbird and Pontiac Grand Am cooling system repairs

Installation Notes and Tips

Clean both mating surfaces thoroughly before installation and remove all old gasket material, corrosion, and coolant residue. Inspect the thermostat housing for warpage or pitting before reassembly, and verify that the housing and engine surfaces are dry and flat. Use the correct coolant service procedure for the vehicle after installation.

Quality Assurance

Fel-Pro positions this gasket line around application-specific sealing materials and vehicle-focused fitment for dependable service on the listed models. Part number 35435 is built for the cooling system sealing demands of these Pontiac, Buick, and Oldsmobile applications.

This part fits 20 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1994PontiacSunbird2.0LL4N/A
1993PontiacSunbird2.0LL4N/A
1992PontiacSunbird2.0LL4N/A
1991PontiacSunbird2.0LL4N/A
1990PontiacLeMans2.0LL4N/A
1990PontiacOptima2.0LL4N/A
1990PontiacSunbird2.0LL4N/A
1989PontiacGrand Am2.0LL4N/A
1989PontiacLeMans2.0LL4N/A
1989PontiacOptima2.0LL4N/A
1989PontiacSunbird2.0LL4N/A
1988BuickSkyhawk2.0LL4N/A
1988OldsmobileFirenza2.0LL4N/A
1988PontiacGrand Am2.0LL4N/A
1988PontiacOptima2.0LL4N/A
1988PontiacSunbird2.0LL4N/A
1987BuickSkyhawk2.0LL4N/A
1987OldsmobileFirenza2.0LL4N/A
1987PontiacGrand Am2.0LL4N/A
1987PontiacSunbird2.0LL4N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1010354011201112011740110764064C31187TCWO8335

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.