USA Standard Gear ZMBWT96-K Master Bearing Seal Overhaul Kit

The USA Standard Gear ZMBWT96-K is a complete master bearing and seal overhaul kit engineered for a professional-quality differential rebuild. Designed to OEM specifications, this all-inclusive kit eliminates the need to source components individually by delivering every bearing, race, seal, and shim needed to complete the job in a single package.

Kit Includes:

• Carrier bearings and races — precision-matched for proper carrier preload
• Pinion bearings and races — front and rear, ready for installation
• Pinion seal — prevents fluid leaks at the pinion flange
• Complete shim pack — for accurate backlash and preload adjustment
• Ring gear bolts — grade-correct hardware for secure ring gear fastening
• Pinion nut — replacement fastener for proper pinion bearing preload
• Crush sleeve — single-use preload component for pinion bearing setup
• Thread locker — factory-recommended chemical fastener retention
• Marking compound with brush — for verifying correct gear tooth contact pattern
• Gasket — differential cover seal for leak-free reassembly

USA Standard Gear master overhaul kits feature premium Koyo/Timken bearings and races, paired with high-quality seals and small parts sourced to meet or exceed OEM standards. Each kit is researched extensively to ensure every component required for the specific application is included — so builders and technicians can work confidently from start to finish without unexpected parts shortages.

USA Standard Gear is a trusted supplier of drivetrain components including ring and pinion gear sets, axle shafts, and rebuild hardware for professional shops and enthusiasts alike.