HomeBelts and Cooling > Thermostat and HousingDorman 902-2035 Engine Coolant Thermostat Housing
Part #: 902-2035

Dorman 902-2035 Engine Coolant Thermostat Housing

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⚙️ 26 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, S10, Sonoma, Astro, S15, Safari, S10 Blazer, and S15 Jimmy
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Reliable Engine Coolant Thermostat Housing for Chevrolet and GMC

The Dorman 902-2035 engine coolant thermostat housing is designed to provide a durable and precise fit for select Chevrolet and GMC models. Crafted from metal with a natural finish, this thermostat housing ensures reliable performance and long-lasting service in your vehicle's cooling system.

  • Constructed from durable metal material for strength and heat resistance
  • Natural color finish for corrosion resistance and OEM appearance
  • Includes a gasket for a secure, leak-free seal
  • Features two mounting holes with 0.313-inch diameter for proper installation
  • Outlet port diameter measures 1.25 inches with a 90-degree housing neck angle
  • Compatible with Chevrolet Astro, S10, S10 Blazer, S15, S15 Jimmy, Safari, and GMC Sonoma models
  • Part number 902-2035 ensures exact replacement fit

Product Details and Specifications

This Dorman engine coolant thermostat housing (part number 902-2035) is engineered to meet the specifications required for proper coolant flow and temperature regulation. The metal construction offers durability under high-temperature conditions, while the included gasket helps prevent coolant leaks. The housing features a 90-degree neck angle and a 1.25-inch outlet port diameter, designed to match the original equipment on compatible Chevrolet and GMC vehicles. With two mounting holes sized at 0.313 inches, installation aligns precisely with factory mounting points. This thermostat housing does not include the thermostat or bolts, and no O-rings are required for installation.

Compatible Vehicles and Applications

This thermostat housing is compatible with the following makes and models:

  • Chevrolet Astro
  • Chevrolet S10, S10 Blazer
  • Chevrolet S15, S15 Jimmy
  • Chevrolet Safari
  • GMC Sonoma

Use part number 902-2035 when searching for a replacement thermostat housing for these vehicles to ensure proper fit and function.

Common Issues Addressed by This Thermostat Housing

  • Coolant leaks caused by cracked or damaged thermostat housing
  • Overheating due to improper coolant flow
  • Corrosion or wear compromising the housing seal
  • Loose or broken mounting points affecting coolant system integrity
  • Replacement of worn or missing gaskets to prevent leaks

Installation Notes and Tips

  • Ensure the engine is cool before beginning installation to avoid burns
  • Remove old thermostat housing carefully to prevent damage to surrounding components
  • Use the included gasket to create a proper seal and prevent leaks
  • Torque mounting bolts to manufacturer specifications (bolts not included)
  • Inspect coolant hoses and connections during installation for wear or damage

Quality Assurance and Warranty

Dorman manufactures this thermostat housing to meet or exceed OEM standards for fit, form, and function. The metal construction and included gasket contribute to a reliable seal and long service life. While bolts and thermostat are not included, this part is designed for straightforward replacement in compatible Chevrolet and GMC vehicles. Please refer to Dorman's warranty policy for coverage details.

BrandDorman
Part Number902-2035
Air Vent (Bleeder Valve)No
Bolts IncludedNo
ColorNatural
Gasket Or Seal IncludedYes
Housing Neck Angle (┬░)90
MaterialMetal
Mounting Hole Diameter0.313
Mounting Hole Quantity2
O Rings IncludedNot Required
Outlet Port Diameter1.25
Package ContentsThermostat Housing with Gasket
Thermostat IncludedNo

This part fits 26 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1993ChevroletS102.5LL4N/AEngine coolant thermostat housing for cooling system.
1993GMCSonoma2.5LL4N/AEngine coolant thermostat housing for cooling system.
1992ChevroletS102.5LL4N/AEngine coolant thermostat housing for cooling system.
1992GMCSonoma2.5LL4N/AEngine coolant thermostat housing for cooling system.
1991ChevroletS102.5LL4N/AEngine coolant thermostat housing for cooling system.
1991GMCSonoma2.5LL4N/AEngine coolant thermostat housing for cooling system.
1990ChevroletAstro2.5LL4N/AEngine coolant thermostat housing for cooling system.
1990ChevroletS102.5LL4N/AEngine coolant thermostat housing for cooling system.
1990GMCS152.5LL4N/AEngine coolant thermostat housing for cooling system.
1990GMCSafari2.5LL4N/AEngine coolant thermostat housing for cooling system.
1989ChevroletAstro2.5LL4N/AEngine coolant thermostat housing for cooling system.
1989ChevroletS102.5LL4N/AEngine coolant thermostat housing for cooling system.
1989GMCS152.5LL4N/AEngine coolant thermostat housing for cooling system.
1989GMCSafari2.5LL4N/AEngine coolant thermostat housing for cooling system.
1988ChevroletAstro2.5LL4N/AEngine coolant thermostat housing for cooling system.
1988ChevroletS102.5LL4N/AEngine coolant thermostat housing for cooling system.
1988ChevroletS10 Blazer2.5LL4N/AEngine coolant thermostat housing for cooling system.
1988GMCS152.5LL4N/AEngine coolant thermostat housing for cooling system.
1988GMCS15 Jimmy2.5LL4N/AEngine coolant thermostat housing for cooling system.
1988GMCSafari2.5LL4N/AEngine coolant thermostat housing for cooling system.
1987ChevroletAstro2.5LL4N/AEngine coolant thermostat housing for cooling system.
1987ChevroletS102.5LL4N/AEngine coolant thermostat housing for cooling system.
1987ChevroletS10 Blazer2.5LL4N/AEngine coolant thermostat housing for cooling system.
1987GMCS152.5LL4N/AEngine coolant thermostat housing for cooling system.
1987GMCS15 Jimmy2.5LL4N/AEngine coolant thermostat housing for cooling system.
1987GMCSafari2.5LL4N/AEngine coolant thermostat housing for cooling system.

* 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:

1251171581561585221CH3035

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