Overview
The Crown Automotive J0648798 is a valve cover gasket for the 4-134 F-Head engine. It fits Jeep CJ6, Commando, FC150, and Willys CJ-3 and CJ-6 models from 1954 to 1971.
A valve cover gasket seals the cover to the cylinder head, so the engine type and vehicle year both matter. Confirm both against your vehicle before fitting.
Key features
- Made for the 4-134 F-Head engine
- Covers Jeep CJ6, Commando, FC150 and Willys models
- Fitment years run from 1954 to 1971
Sealing an older F-Head engine
Valve cover gaskets on older F-Head engines tend to be the first seal to fail, because the materials have had decades to age and the covers may have been removed many times. Before fitting a new gasket, look closely at the cover flange and the head surface for dents, warping or old residue. A clean, flat surface does more for sealing than any sealant.
Gasket fit depends on both the engine type and the vehicle year, so match the gasket to the engine before starting the job. Tighten the cover fasteners in stages and in a crossing pattern. After a short drive, check the joint for seepage and retighten gently if needed.
- Clean old gasket material from both surfaces
- Check the cover flange for warping
- Tighten fasteners in stages
- Recheck for seepage after a short drive
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | J0648798 |
| UPC | 848399053043 |
| Engine | 4-134 F-Head |
| Part type | Valve cover gasket |
Vehicle fitment
It fits 1959–1971 Jeep CJ6 (Base), 1966–1971 Jeep Commando (Base), 1957–1964 Jeep FC150 (Base), 1954–1958 Jeep Willys CJ-3 and 1956–1958 Jeep Willys CJ-6.
CJ5 and CJ7 models are not on this list. Confirm your vehicle’s year, model and trim before ordering.
What’s included
The product is a valve cover gasket. Check the package contents against your installation before starting.
