Chevrolet Avalanche Transfer Cases

Transfer case gasket warped and cracked? This replacement gasket restores a tight seal to prevent fluid leaks on certain vehicle years, makes and models.

Product Features:

• Direct replacement – this transfer case gasket matches the fit and performance of the original gasket on specific vehicle applications
• Effective fix – restores a tight seal in the transfer case after original gasket fails
• Durable construction – built for reliable longevity, free of defects in materials and workmanship
• Trustworthy quality – backed by team of designers and engineers in the United States

Transfer case control module no longer in control? Restore it cost-effectively with this replacement module that provides the same function and performance of the original on specific vehicles.

Product Features:

• Direct replacement – this transfer case control module directly replaces the original equipment modules on certain vehicle years, makes and models
• Effective fix – replacement restores transfer case motor control and addresses trouble codes
• Thoroughly tested – each module undergoes rigorous testing to ensure reliable performance
• Trustworthy quality – backed by team of engineers and inspectors in the United States

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Low swell in hydrocarbon fluids
• Design type: spring loaded; multi-lip
• Provides good low temperature capability
• Temperature range: -40°F to 225°F; -40°C to 107°C
• Delivers quality and reliable performance for every type of repair

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

• Premium bearing design matches OEM specifications
• Precision manufactured using premium-grade steel for outstanding durability and performance
• Controlled heat treating process for lasting performance and extended bearing life
• Industry leading coverage
• Professional technicians know they can depend on National

Building upon a foundation of premium full-line products established under NGK ignition and NTK oxygen sensor products, NTK’s expansion to technical sensors is part of our ongoing commitment to streamline product types and increase coverage under one premium brand: NTK, The Sensor Specialist. With over 80 years of automotive expertise, NGK’s family of automotive products are driven by extreme dedication to innovation, performance and quality. NTK is the only OE supplier with a full-line of technical sensors in the aftermarket for import and domestic vehicles. Drawing from OE experience, NTK sensors undergo extreme testing conditions that include thermal shock, vibration and OBD verification. NTK sensors are manufactured to ensure a quality that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:

• NTK ABS Wheel Speed Sensor connectors, mounts and wire lengths are an exact match to OE for worry free installation. Grease, mounting nut and instruction sheet included where applicable.
• NTK’s Wheel Speed Sensors are manufactured to operational performance standards to meet or exceed OE fit, form and function. Manufactured with weather pack connectors to prevent dirt and moisture contamination.
• The ABS ECU monitors the Wheel Speed Sensors rotational speed for anti-lock brake function, stability control and traction control. The ABS sensors report the speed of all four wheels to the ECU to determine if the wheels are locking up.

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

• Premium bearing design matches OEM specifications
• Precision manufactured using premium-grade steel for outstanding durability and performance
• Controlled heat treating process for lasting performance and extended bearing life
• Industry leading coverage
• Professional technicians know they can depend on National

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Low swell in hydrocarbon fluids
• Design type: spring loaded; multi-lip
• Provides good low temperature capability
• Temperature range: -40°F to 225°F; -40°C to 107°C
• Delivers quality and reliable performance for every type of repair

Evolution Driveline products, are remanufactured to meet or exceed OEM specifications for quality, fit, and performance. Every transfer case we sell passes a comprehensive battery of tests on our computerized test center. We recreate actual driving conditions and analyze performance before the product even leaves the factory, so you can buy with confidence.

Product Features:

• Back Lash, Mesh Load, Leak and Rotational Torque QC testing performed on each unit.
• OEM cores are processed as individual units throughout the tear down and assembly process
• Cores cleaned using our Hydro Blast cleaning and rinse process
• All case halves wet sanded to ensure perfect mating surfaces
• Loctite gasket eliminator and primer used to seal all aluminum mating surfaces
• Remanufactured in our ISO9001:2008 USA facility.
• Without Motor

This transfer case adapter seal matches the fit and function of worn or damaged original equipment part. This seal should be replaced as part any service that requires the transfer case and transmission to be separated.

Product Features:

• Ideal replacement – this transfer case adapter O-ring is a direct replacement for a worn or damaged original equipment seal between the transfer case and transmission
• Convenient on-hand part – this seal should be replaced whenever the transfer case is removed for service
• Application-specific design – this O-ring has been designed of durable materials specifically for this vehicle application
• Quality tested – this part has undergone try-on and material testing to ensure a quality fit and long service life

Transfer case stopped shifting between high and low ranges? Swap out a seized transfer case motor with this direct replacement. Designed to install and perform like the original motor, it uses a factory-style connector and is sealed for protection.

Product Features:

• Direct replacement – this transfer case motor fits and performs like the original motor on certain vehicle applications
• Durable construction – made with factory-style electrical connector and weathertight seal to prevent corrosion
• 100% new – this transfer case motor is entirely new, not remanufactured like competitors
• Quality assured – vehicle-specific application has been validation tested to ensure quality

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

• Premium bearing design matches OEM specifications
• Precision manufactured using premium-grade steel for outstanding durability and performance
• Available in both caged design and full complement
• Industry leading coverage
• Professional technicians know they can depend on National

TCaseShiftForkInsert

This transfer case adapter replaces a damaged or cracked original equipment adapter, restoring a solid connection between the transmission and transfer case. Made of durable aluminum, this adapter includes a new gasket for a complete repair.

Product Features:

• Ideal replacement – this transfer case adapter is a direct replacement for a damaged or cracked original equipment adapter
• Durable construction – manufactured from aluminum, this transfer case adapter is made to provide years of reliable service
• Complete solution – this adapter includes a new transfer case adapter gasket for a complete repair
• Quality tested – this part has undergone try-on, corrosion and material testing to ensure a quality fit and long service life

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Low swell in hydrocarbon fluids
• Design type: spring loaded; multi-lip
• Provides good low temperature capability
• Temperature range: -40°F to 225°F; -40°C to 107°C
• Delivers quality and reliable performance for every type of repair

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Low swell in hydrocarbon fluids
• Design type: spring loaded; multi-lip
• Provides good low temperature capability
• Temperature range: -40°F to 225°F; -40°C to 107°C
• Delivers quality and reliable performance for every type of repair

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Low swell in hydrocarbon fluids
• Design type: spring loaded; multi-lip
• Provides good low temperature capability
• Temperature range: -40°F to 225°F; -40°C to 107°C
• Delivers quality and reliable performance for every type of repair

Input Shaft Seal

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Low swell in hydrocarbon fluids
• Provides good low temperature capability
• Temperature range: -40°F to 225°F; -40°C to 107°C
• Recognized worldwide for their quality and reliable performance for every type of repair
• Temperature range: -40°F to 400°F; -40°C to 204°C

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

• Low swell in hydrocarbon fluids
• Design type: spring loaded; multi-lip
• Provides good low temperature capability
• Temperature range: -40°F to 225°F; -40°C to 107°C
• Delivers quality and reliable performance for every type of repair