Upper Rod Bearings Only - 30pcs.

The MAHLE ORIGINAL/CLEVITE Upper Rod Bearings (CB1512VU) are precision engine components engineered for rebuilding and high-performance engine applications where bearing integrity directly impacts reliability and longevity. A 30-piece pack provides flexibility for engine builders, mechanics, and enthusiasts tackling V-6, V-8, or multi-cylinder configurations that demand OEM-grade bearing quality. These rod bearings serve as the critical interface between the connecting rod and crankshaft, distributing combustion forces and maintaining proper clearances under extreme loads and temperature cycles.

MAHLE ORIGINAL bearings are manufactured to strict OEM specifications, utilizing advanced tri-metal bearing construction with a steel backing, copper-lead mid-layer, and tin-aluminum overlay that resists friction, wear, and fatigue under sustained high RPM operation. The CB1512VU design incorporates precision oil grooves and channel geometry to optimize hydrodynamic film strength, preventing metal-to-metal contact and ensuring uniform load distribution across the bearing surface. This bearing formula excels in both naturally aspirated and boost applications, maintaining dimensional stability and load capacity across wide operating temperature ranges—critical for street engines, race builds, and rebuilt factory powerplants alike.

Professional engine builders and restorers choose MAHLE ORIGINAL/CLEVITE upper rod bearings for complete engine overhauls, stroker builds, and performance upgrades where bearing quality directly correlates to engine durability and power output consistency. The 30-piece quantity accommodates multiple engine blocks or allows inventory for future rebuilds, making bulk purchase economical for shops and serious enthusiasts. Proper installation requires careful attention to bearing clearance specifications, crankshaft journal inspection, and torque procedures—adherence to manufacturer guidelines ensures maximum bearing life and optimal engine performance.