King Engine Bearings MB517XP XP Series Tri-Metal Main Bearing Set

The King Engine Bearings MB517XP is a high-performance XP Series tri-metal main bearing set engineered specifically for Chrysler 360 engines. Designed for extreme performance applications, this bearing set delivers the advanced metallurgical technology and precision geometry required for high-load, long-duration racing environments including circle track, off-road, and performance street applications using forged steel aftermarket crankshafts.

Advanced XP Series Technology:

• pMax Black Construction: Features a unique tri-metal structure that is 24% harder than conventional tri-metal race bearings, providing superior load capacity and fatigue resistance
• Enhanced Tri-Metal Design: Copper-lead construction with nickel barrier and SecureBond adhesion process for superior stability between layers
• Bull's Eye Tolerance: Industry-leading wall thickness tolerances with all shells matched to 0.0001 inch for consistent performance
• Hardened Performance Overlay: 0.0005-inch metallurgically enhanced and hardened overlay withstands greater loads and resists surface fatigue
• Half-Grooved Design: Mains are 1/2 grooved for uncompromised lower shell load capacity
• Improved Oiling: Features enlarged, chamfered oil holes for optimal lubrication under extreme conditions

Superior Performance Specifications:

• Intermediate layer load capacity: 17,000 PSI
• Overlay fatigue resistance: 10,200 PSI
• Industry's highest hardness level up to 18.1 HV
• Medium eccentricity for optimum load distribution

King Engine Bearings has been manufacturing premium engine bearings since 1960, earning its reputation as the first choice in demanding aviation and racing industries. Every King bearing undergoes rigorous quality control throughout the manufacturing process to ensure only the highest quality components reach your engine build.