Performance Crankshaft for Subaru Boxer Engines ⚙️

This OEM‑spec rotating core sits at the heart of your flat‑four. It converts piston up‑down motion into smooth torque, stabilizes timing, and feeds oil through internal drillings to main and rod bearings. Precision‑ground journals and balanced counterweights cut vibration and protect the bottom end for long service life .

Why you need it ️

Ideal for engine rebuilds after bearing knock or scoring, to restore oil pressure, quiet idle, and crisp throttle. Replacing a worn unit prevents damage to rods, block, and turbo hardware.

How it works

Main journals ride in the block while offset rod journals drive the connecting rods. Counterweights cancel shaking forces; hardened surfaces resist wear. The rear flange couples to the flywheel, keeping starts and shifts clean, while the snout drives the timing set and accessories.

When it fails ❗

Cold‑start rattle, low oil pressure, metal glitter in the sump, misfire under load, harsh vibration, or total seizure. Continued use risks spun bearings, broken rods, and a ruined crankcase.

Install tips ✅

Measure clearances, fit new bearings, bolts, and seals, follow torque+angle, verify endplay, prime oiling, and use the correct viscosity oil.

Compatibility

• Legacy
• Forester
• WRX/Levorg
• BRZ
• WRX