Overview
The Crown Automotive connecting rod bearing, part number JA007233, is a standard size bearing for 4-cylinder 134 L or F-Head engines. Four bearings are needed for each engine.
It fits the 1959–1971 Jeep CJ5 and CJ6 and a broad range of Willys models from 1941 to 1958, including CJ-2, CJ-3, CJ-5, CJ-6, DJ-3, Jeepster, Panel and Truck variants.
Key features
- Standard size connecting rod bearing
- Copy notes 4 required
- Fits 4-cylinder 134 L and F-Head engines
- Willys body styles include Jeepster, Panel, Sedan Delivery, Truck and Utility Wagon
Rebuild planning
Rod bearings carry the load between the connecting rods and the crankshaft, so wear shows up as knocking or oil pressure loss. Replacing them is usually part of a broader rebuild, where the rods are checked for bend and twist and the crankshaft journals are measured for taper and out-of-round.
Standard size bearings suit journals that are within limits. If the crankshaft is undersize or worn, a different bearing size may be needed, which is a machine shop decision. Clean every oil passage and use fresh assembly lube during installation, and keep the bearing caps marked so they return to their original positions.
- Measure journals before choosing bearing size
- Check rod bolts for stretch before reuse
- Clean oil galleys thoroughly
- Mark caps so they go back in place
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | JA007233 |
| UPC | 848399073379 |
| Bearing type | Connecting rod |
| Size | Standard |
| Quantity | 4 required |
| Engine | 4-cylinder 134 L or F-Head |
Vehicle fitment
Crown Automotive’s list covers the 1959–1971 Jeep CJ5 and CJ6, the 1966–1968 CJ5A and CJ6A, 1941–1958 Willys models including CJ-2, CJ-3, CJ-5, CJ-6, FJ, Jeepster and Truck, and the 1941–1942 Willys MB.
Later Jeep models, and Cherokee, Wrangler and Grand Cherokee models, are not on this list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Rod bearings are normally replaced during an engine rebuild, when the rods and crankshaft are measured. Use a standard size bearing only when the crankshaft journals are within specification.
What’s included
Four bearings are needed. Crankshaft, connecting rods and other engine parts are not part of this package, so check your installation needs before starting.
Not included: crankshaft, connecting rods and other engine parts.
