Clevite CB-1638P Connecting Rod Bearing Set P-Series High Performance

The Clevite CB-1638P is a high-performance P-Series connecting rod bearing set designed for demanding applications from street performance to full competition engines. These bearings are engineered to meet or exceed OEM standards while delivering the enhanced durability and protection required for high-RPM and high-stress operating conditions.

P-Series Performance Features:

• Maximum eccentricity design for severe rod bore close-in conditions at extremely high RPM
• Hardened steel back construction for superior strength and fretting resistance
• High crush design ensures maximum bearing retention in the bore
• Reduced overlay thickness prevents overlay fatigue and "hen tracking"
• Tri-metal construction with lead-tin-copper overlay for excellent wear resistance
• Available with or without dowel holes for aluminum connecting rod applications

Technical Specifications:

P-Series bearings feature unique core part numbers distinct from standard passenger car applications. The greatest amount of eccentricity among Clevite's performance bearing lines makes these ideal for engines experiencing severe rod bore distortion at high RPM, typically indicated by nearly full parting line contact. The hardened steel backing provides additional strength over standard bearings, while the reduced overlay thickness delivers long-term durability under racing conditions.

Application Guidelines:

Use P-Series rod bearings when operating at extremely high RPM causes severe rod bore close-in, or when rod bearing oil starvation is evident through polishing, smearing, or discoloration concentrated at the axial center of the bearings. These bearings provide the protection vital engine components need against the harmful effects of friction in high-performance applications.

Important: Clevite bearings are sold as paired sets (two bearing halves for one connecting rod). For a 6-cylinder engine, order quantity 6. For an 8-cylinder engine, order quantity 8.