Manley 30070 H-Series Rod Bearing Set Subaru EJ20 EJ25

The Manley 30070 is a premium H-Series connecting rod bearing set engineered for Subaru EJ20 and EJ25 horizontally-opposed four-cylinder engines. These bearings are the factory-recommended pairing for Manley performance connecting rods and are built to handle the demands of high-RPM, high-boost, and competition-level builds.

Key Features:

• Clevite H-Series Design: Medium-level eccentricity with high crush for precise fitment and reliable oil film retention
• Hardened Steel Back: Provides structural rigidity and durability under high-load conditions
• Thin Overlay Construction: Optimizes oil clearance and reduces wear during break-in and sustained operation
• No Flash Plating: Omitted intentionally for improved seating and better conformability to the journal surface
• Race-Proven: Originally developed for NASCAR-type racing applications; suitable for all forms of competition engines
• Full Set Included: Includes 4 rod bearing pairs for a complete engine build

Manley's 30070 rod bearings are specifically validated for consistent dimensions and controlled oil clearance, making them the correct bearing choice when building with Manley EJ connecting rods. Using Manley rods with generic or OEM-spec bearings may result in incorrect clearances if the rod big-end bore differs from the standard OEM dimension. These bearings are available in standard size to suit properly sized crankshaft rod journals.