CJ Cooling, Cooling Parts, Replacement Parts

Crown Automotive Thermostat Gasket – J3187543

Thermostat gasket, part number CROJ3187543, for 5.0L V8 engines
Fitment list covers 1971–1991 Jeep SJ, CJ, J-series and Wagoneer models
Fits 1971–1991 Jeep SJ, CJ, J-series and Wagoneer models

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Description

Overview

The Crown Automotive thermostat gasket, part number CROJ3187543 (title number J3187543), is a gasket for 5.0L V8 engines. It fits Jeep models from 1971 to 1991, including Cherokee (SJ), CJ5, CJ6, CJ7, Commando, Grand Wagoneer, Wagoneer and J-series trucks, in several trims.

Key features

Thermostat gasket for 5.0L engines
Designed for 5.0L V8 engines
Fitment list spans Cherokee SJ, CJ, Commando, Wagoneer, Grand Wagoneer and J-series trucks
Direct fit for the listed models

Gasket sealing tips

A thermostat gasket seals the joint between the housing and the engine. On a V8, the gasket must stay flat under heat cycles, so a clean and even mating surface is important. Old gasket material left on the block or housing can prevent a tight seal even with a new part. Keep bolts and fastener threads clean so the torque reading is accurate.

Tighten fasteners evenly in a crisscross pattern to avoid distorting the housing. Recheck coolant level after the first few heat cycles and watch for seepage at the joint. Keep a note of which bolts were loosened so they are returned to the same holes. Older vehicles often benefit from replacing the thermostat at the same time, since the housing is already off.

Use a plastic scraper on alloy surfaces
Replace the gasket rather than reusing it
Check fasteners after the first drive

Specifications

Brand	Crown Automotive
Part number	CROJ3187543
Part type	Thermostat gasket
Engine	5.0L V8
Fitment type	Direct Fit

Vehicle fitment

It fits Cherokee (SJ) in several trims, CJ5, CJ6 and CJ7 models, Commando, Grand Wagoneer (SJ), Wagoneer (SJ), J-2500, J-2600, J-3800, J-4500, J-4600, J-4700, J-4800, J10 and J20 trucks.

Wrangler, Cherokee XJ and later models are not on this list. Confirm your vehicle’s year, model and trim before ordering.

Installation notes

Clean the old gasket material from both sealing surfaces before fitting the new gasket, since residue can keep it from sealing.

What’s included

The gasket is the only item in the package. Check the package contents against your installation before starting.

SKU: CROJ3187543 Categories: Replacement Parts, Cooling Parts, CJ Cooling

Fitment

Vehicle	Years	Trims
Jeep Cherokee	1983	Wide Track Chief
Jeep Cherokee (SJ)	1974–1983	Base, Chief, Pioneer, S, Wide Track
Jeep CJ5	1971–1981	Base, Golden Eagle, Laredo, Renegade
Jeep CJ6	1971–1975	Base
Jeep CJ7	1976–1981	Base, Golden Eagle, Golden Hawk, Laredo, Renegade
Jeep Commando	1972–1973	Base
Jeep Grand Wagoneer (SJ)	1984–1991	Base, Limited
Jeep J-2500	1971–1973	Base
Jeep J-2600	1971–1973	Base
Jeep J-3800	1971	Base
Jeep J-4500	1971–1973	Base
Jeep J-4600	1971–1973	Base
Jeep J-4700	1971–1973	Base
Jeep J-4800	1971–1973	Base
Jeep J10	1974–1988	Base
Jeep J20	1974–1988	Base
Jeep Wagoneer (SJ)	1972–1983	Base, Brougham, Custom, Limited

Use “Select your vehicle” at the top of the page to check this part against your vehicle.

Questions & Answers

Is this gasket for a 5.0L V8?

Yes. It is made for 5.0L engines with a V8 configuration. Confirm your engine size before ordering, since other engines are outside this gasket's design.

Will it fit a 1981 Jeep CJ7?

Yes. It fits 1976–1981 Jeep CJ7 models in Base, Golden Eagle, Golden Hawk, Laredo and Renegade trims, and 1981 falls within those years. Confirm fit for your vehicle's year, model and trim before ordering.

Does it fit a 1991 Jeep Cherokee XJ?

No. It is designed for 1971–1991 Jeep SJ, CJ, J-series and Wagoneer models, and Cherokee XJ and later models are outside that range. Confirm fit for your vehicle's year, model and trim before ordering.

Should the thermostat housing bolts be tightened to a specific value?

Tighten them evenly in a crisscross pattern to the torque value suited to your engine. Uneven tightening can crush the gasket and cause a leak once the engine heats.