Engine Connecting Rod Bearing Kit

This kit keeps your boxer engine smooth and quiet. The shells sit between the connecting rod and crankshaft, setting the precise oil clearance that supports the rod under load. If you are rebuilding, chasing knock, or refreshing a high‑mileage motor, new bearings are essential for reliable oil pressure and long life.

Why it’s needed

Bearings control friction and wear. Over time, heat, contaminated oil, hard driving, or low oil levels thin the protective layer. Fresh OE‑spec shells restore correct clearance, stabilize oil film, and protect the crank journals.

How it works ⚙️

Thin, precision‑ground shells clamp into the rod big end. During operation, pressurized oil forms a hydrodynamic film between bearing and crank journal. That oil wedge carries the load, centers the rod, and prevents metal‑to‑metal contact even at high RPM.

If worn or failed ❗

Expect cold start knock, hot idle knock, copper glitter in oil, dropping oil pressure, misfire under load, or a spun bearing. Continued driving risks scuffed journals, bent rods, and a seized engine—often requiring a full rebuild.

Pro tips for install ️

Measure journals, match sizes, clean meticulously, lubricate surfaces, torque rod bolts to spec, and verify clearance with Plastigauge. Replace in complete sets and check crank polish.

Compatibility

• Legacy
• Impreza
• Forester
• Exiga