4PCS Connecting Rods w/ 52mm Main & Rod Bearings Kit For Subaru Impreza WRX STI 2.5L EJ255 EJ257 This comprehensive engine internals kit is designed for the Subaru EJ257 and EJ255 2.5L Turbo engines. The package includes a full set of main bearings and rod bearings, and four connecting rods, providing a complete solution for your engine rebuild or performance upgrade project. Specifications: Engine Application: Subaru EJ257 and EJ255 2.5L Turbocharged Engine. Condition: New Bearing Size:Standard (STD) Thrust Bearing Position: #5 Rod Journal Size: 52mm Feature: .