MAHLE MS-496P-30 Main Bearing Set for Pontiac V8 .030 Undersize

The MAHLE MS-496P-30 is a high-performance P-Series main bearing set designed for Pontiac V8 engines (326/350/389/400 cubic inch) from 1959-1979. This bearing set features a .030 inch undersize journal diameter, making it ideal for crankshaft rebuilds where the journals have been machined undersize to restore proper clearances.

P-Series Tri-Metal Construction:

• Steel backing for maximum structural support and dimensional stability
• Cast copper-lead intermediate layer to withstand high engine loads
• Electroplated lead-tin-copper babbit overlay on running surfaces for superior anti-friction properties
• Full-groove oil distribution on both bearing halves for enhanced lubrication

Applications and Benefits:

• Versatile replacement suitable for most OE applications and performance rebuilds
• Ideal for heavy-duty use, motorsports, and street performance engines
• Increased load capacity compared to bi-metal bearing designs
• Trusted by professional engine builders and NASCAR teams for proven reliability

MAHLE Clevite bearings are manufactured to exacting tolerances and represent the gold standard in engine bearing technology. The P-Series design provides an excellent balance of durability, conformability, and load-carrying capacity, making these bearings suitable for both stock rebuilds and performance applications where more demanding use is anticipated.