GM LS7 Pilot Bearing

LS7 Pilot Bearing

OEM LS7 Pilot Bearing for Manual Transmission and AR5 LS Swap Applications

The LS7 pilot bearing GM part number 12557583 is a critical component for manual transmission LS applications. It supports the transmission input shaft and maintains proper alignment between the engine and transmission helping reduce wear vibration and drivetrain damage.

This OEM style large pilot bearing is used in many factory GM manual transmission vehicles and is required for AR5 transmission swaps using FABbot adapter kits. Using the correct pilot bearing is essential for proper clutch engagement shift quality and long term transmission reliability.

Engineered for Alignment Support and Drivetrain Reliability

• OEM GM pilot bearing for manual transmission LS applications
• Supports transmission input shaft and proper engine to transmission alignment
• Required for AR5 LS swap applications using FABbot adapter kits
• Helps prevent hard shifting input shaft wear and misalignment issues
• Designed for LS crankshafts requiring the large pilot bearing style

Technical Specifications

• GM part number 12557583
• Outside diameter 1.7 inch
• Inside diameter 0.59 inch
• Thickness 0.51 inch
• Style LS7 large pilot bearing
• Application manual transmission LS setups

Fitment and Compatibility

• Compatible with Gen III and Gen IV LS engines used in manual transmission applications
• Commonly used in Corvette Camaro Firebird GTO and CTS V platforms
• Required for AR5 transmission swaps using FABbot adapter kits
• Not used with CD009 or EA200 adapter systems

What You Will Need

• Manual transmission LS setup such as AR5 or OEM style T56 application
• Compatible LS flywheel and clutch components

Built for Reliable Real World Performance

The pilot bearing is a small component with a critical role in drivetrain function. This OEM LS7 pilot bearing provides the fitment support and reliability needed for factory manual LS applications and AR5 swap systems helping prevent costly alignment and transmission issues.