BRG SET-CRANKSHAFT

Crankshaft Main Bearing Set for Subaru Boxer Engines ?

Keep your engine smooth and quiet with a precision main bearing set. These shells support the crankshaft, keep correct oil clearances, and reduce friction. Fresh bearings restore oil pressure, protect journals, and stabilize the bottom end under load. Perfect for rebuilds, knock repair, or high‑mileage refresh.

Why this part is needed ?️

Over time, bearings wear from heat, oil breakdown, and debris. Replacing them prevents metal‑to‑metal contact, keeps the crank centered, and stops low oil pressure at idle. It also reduces startup rattle and improves longevity.

How it works ⚙️

Semi‑circular shells fit in the block and caps around the main journals. Oil flows through grooves to build a thin film that the crank rides on. Quality tri‑metal/aluminum alloy layers handle load, heat, and contamination while holding stable clearances.

What happens if worn or broken ⚠️

Symptoms include bearing knock, glitter in oil, hot idle oil light, and vibration. Continued use can spin a bearing, score journals, drop oil pressure, and seize the engine.

Tech tips ✅

Measure journals, clean surfaces, check clearances with plastigauge, use assembly lube, and torque caps to spec. Pair with fresh oil pump and new bolts if needed.

Compatibility

• Xv
• Forester
• Legacy
• Impreza