American Axle & Manufacturing 40007712 Differential Pinion Seal for GM 8.25" and 9.25" IFS Axles

The American Axle & Manufacturing 40007712 is a genuine OE-quality differential pinion seal designed for GM 8.25-inch and 9.25-inch Independent Front Suspension (IFS) front axles. This precision-engineered seal prevents differential fluid leaks at the pinion yoke, ensuring proper lubrication and protecting vital drivetrain components from contamination and premature wear.

Key Specifications:

• Housing bore diameter: 73.66mm (2.90 inches)
• Shaft diameter: 49.3mm (1.94 inches)
• Outside diameter: 73.89mm (2.91 inches)
• Manufactured to OE standards for precise fit and function
• Replaces GM part numbers 15530288 and 12471590

Applications:

• 1988-2013 GM trucks and SUVs with 8.25" IFS front axles
• 1997-2019 Chevy and GMC trucks with 9.25" Salisbury front axles
• Fits 1500, 2500, and 3500 series 4x4 and AWD vehicles
• Compatible with both clamshell and Salisbury-style front differentials

Built by American Axle & Manufacturing, a tier-1 automotive supplier with over 25,000 associates and nearly 90 facilities worldwide, this pinion seal is manufactured to the same exacting standards as original equipment. AAM's commitment to quality manufacturing processes ensures reliable sealing performance and long service life, helping prevent costly differential fluid leaks and potential axle damage.