Dorman 902-3021 Engine Coolant Thermostat Housing
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Dorman

Dorman 902-3021 Engine Coolant Thermostat Housing

Brand Dorman 902-3021
Air Vent (Bleeder Valve) No
Bolts Included No
Color Black
Gasket Or Seal Included Yes
Housing Neck Angle (┬░) 90
Material Metal
Mounting Hole Diameter 0.313
Mounting Hole Quantity 2
O Rings Included Not Required
Outlet Port Diameter 1.25
Package Contents Thermostat Housing with Gasket
Thermostat Included No
Fits Dodge, Jeep, and Chrysler · 21 vehicles

OE-style replacement. Engineered to match stock housing fit and durability.

Metal construction. Built to handle extreme temperature changes for longer service life.

Gasket included. Comes with the thermostat housing and gasket for a complete install.

Cross-references Four Seasons 85183, Gates CO34777 and Karlyn 5193 for the same application. See all 6.

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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Engine Coolant Thermostat Housing options

Engine Coolant Thermostat Housing for Select Vehicles

This Dorman engine coolant thermostat housing is a direct replacement for select Chrysler, Dodge, and Jeep cooling system applications. Built from metal with a black finish, it matches the stock housing’s fit and durability while handling repeated temperature swings in daily driving.

Key Features

  • Metal thermostat housing for strength and heat resistance
  • Black finish for a clean OE-style appearance
  • 1.25 in. outlet port diameter
  • 90-degree housing neck angle
  • Gasket included for sealing at installation
  • Two mounting holes with 0.313 in. diameter
  • No thermostat included
  • No bleeder valve and no bolts included

Detailed Description

Dorman 902-3021 is engineered as a replacement engine coolant thermostat housing for vehicles that need a dependable cooling-system seal at the thermostat location. The metal construction is selected to handle extreme temperature changes and help maintain service life in demanding underhood conditions. This housing includes the gasket and uses a 90-degree neck angle with a 1.25 in. outlet port, making it a practical OE-style service part for cooling repairs on the Dodge Caravan, Jeep TJ, Jeep Wrangler, Jeep Liberty, and Chrysler Voyager.

This part cross-references Gates CO34777 and Motorad CH4021 for the same application.

What It Helps Address

  • Coolant leaks at the thermostat housing
  • Cracked or warped plastic housing replacement needs
  • Cooling system service after thermostat-area seepage
  • Loss of sealing at the engine coolant outlet connection
  • Restoration of proper coolant flow path at the housing

Installation Notes and Tips

Verify the outlet diameter, neck angle, and mounting-hole layout before installation. Transfer or install the thermostat separately, since this housing does not include one. Clean the mating surfaces thoroughly and replace any damaged fasteners only with the correct service hardware for the vehicle.

Quality Assurance

Dorman designs this thermostat housing to match the fit and durability of the original part on specified applications. The metal construction and included gasket support a reliable cooling-system repair on compatible Chrysler, Dodge, and Jeep models.

Compatible With Select Chrysler, Dodge, and Jeep Models

  • Fits 2001-2007 Dodge Caravan, N/A
  • Fits 2005-2006 Jeep TJ, N/A
  • Fits 2003 Jeep TJ, N/A
  • Fits 2003-2006 Jeep Wrangler, N/A
  • Fits 2002-2005 Jeep Liberty, N/A
  • Fits 2001-2003 Chrysler Voyager, N/A

Related reading

This part fits 21 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2007DodgeCaravan2.4LL4N/AEngine coolant thermostat housing for cooling system.
2006DodgeCaravan2.4LL4N/AEngine coolant thermostat housing for cooling system.
2006JeepTJ2.4LL4N/AEngine coolant thermostat housing for cooling system.
2006JeepWrangler2.4LL4N/AEngine coolant thermostat housing for cooling system.
2005DodgeCaravan2.4LL4N/AEngine coolant thermostat housing for cooling system.
2005JeepLiberty2.4LL4N/AEngine coolant thermostat housing for cooling system.
2005JeepTJ2.4LL4N/AEngine coolant thermostat housing for cooling system.
2005JeepWrangler2.4LL4N/AEngine coolant thermostat housing for cooling system.
2004DodgeCaravan2.4LL4N/AEngine coolant thermostat housing for cooling system.
2004JeepLiberty2.4LL4N/AEngine coolant thermostat housing for cooling system.
2004JeepWrangler2.4LL4N/AEngine coolant thermostat housing for cooling system.
2003ChryslerVoyager2.4LL4N/AEngine coolant thermostat housing for cooling system.
2003DodgeCaravan2.4LL4N/AEngine coolant thermostat housing for cooling system.
2003JeepLiberty2.4LL4N/AEngine coolant thermostat housing for cooling system.
2003JeepTJ2.4LL4N/AEngine coolant thermostat housing for cooling system.
2003JeepWrangler2.4LL4N/AEngine coolant thermostat housing for cooling system.
2002ChryslerVoyager2.4LL4N/AEngine coolant thermostat housing for cooling system.
2002DodgeCaravan2.4LL4N/AEngine coolant thermostat housing for cooling system.
2002JeepLiberty2.4LL4N/AEngine coolant thermostat housing for cooling system.
2001ChryslerVoyager2.4LL4N/AEngine coolant thermostat housing for cooling system.
2001DodgeCaravan2.4LL4N/AEngine coolant thermostat housing for cooling system.
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 85183Gates — CO34777Karlyn — 5193Motorad — CH40218156024781489AA