Allison T4 Bearing

Features:

• Fits 2001-2005 6.6L Duramax Allison transmissions
• Replacement bearing for T4 position
• Mounts between P1 and P2 planetary gears
• Improves reliability in rotating assemblies
• Helps extend overall transmission service life
• Built using advanced manufacturing technology
• Meets or exceeds industry performance standards
• Ideal for rebuilds or preventative maintenance

Don’t Overlook This Critical Transmission Upgrade

Anytime you crack open an Allison transmission for service or a rebuild, it’s smart to replace the internal bearings that keep everything spinning smoothly. One of the most important of these is the T4 bearing, and the Merchant 29531106 Allison T4 Bearing is built to handle that job right. Designed specifically for 2001 to 2005 GM Silverado and Sierra 2500HD and 3500HD trucks with the 6.6L Duramax, this bearing sits between the P1 and P2 planetary gear sets. It plays a vital role in reducing friction and maintaining proper gear alignment inside the rotating assembly. Whether you’re restoring a high-mileage transmission or building one for added power and reliability, this is the kind of part you’ll be glad you didn’t skip.

Built for Strength, Precision, and Longevity

Merchant Automotive is known for producing components that go beyond the bare minimum, and this bearing is no exception. Manufactured using advanced processes and held to strict quality standards, it’s designed to deliver long-term durability in real-world driving conditions. Replacing worn bearings like the T4 not only protects your transmission from premature failure but also helps improve overall shifting performance and drivability. It’s a simple upgrade that pays off with smoother operation and longer service life. Whether you’re towing, working, or pushing your truck on the weekend, installing this bearing during your transmission build is a smart way to protect your investment and avoid future problems down the road.

Fits: 2001, 2002, 2003, 2004, 2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax