National 471648 Manual Transmission Input Shaft Seal

Manual Transmission Input Shaft Seal for Jeep, Dodge, and Mitsubishi

National 471648 is a manual transmission input shaft seal built for specific Jeep, Dodge, and Mitsubishi applications with the New Process T355 transmission. It uses nitrile material and a Redicoat finish to support sealing performance at the transmission input shaft.

Use this seal when servicing a leaking manual transmission input shaft on a Jeep Compass, Jeep Patriot, Dodge Caliber, or Mitsubishi Lancer with the correct transmission setup. National 471648 is a direct-fit oil seal for the listed applications and dimensions.

Key Features

• Nitrile seal material for transmission sealing applications
• Inside diameter: 0.968 in. / 24.590 mm
• Outside diameter: 1.628 in. / 41.350 mm
• Width: 0.250 in. / 6.350 mm
• Housing bore: 1.624 in. / 41.250 mm
• Redicoat finish for improved installation characteristics
• Zero duplication part designation
• National 471648 oil seal in the 470000 series

Detailed Description

National 471648 is a manual transmission input shaft seal engineered for vehicles using the New Process T355 transmission. It is specified for 2007-2015 Jeep Compass, 2007-2015 Jeep Patriot, 2007-2012 Dodge Caliber, and 2008-2012 Mitsubishi Lancer, with additional coverage for 2016-2017 Jeep Compass and 2016-2017 Jeep Patriot. The seal’s nitrile construction and precise inch-based dimensions help match the shaft and housing requirements of the listed applications. This part cross-references Monroe Shocks & Struts (e.g., 31162) for the same application.

What This Seal Helps Address

• Transmission fluid leakage at the input shaft
• Fluid seepage around the transmission housing bore
• Seal wear from age, heat, and mileage
• Service replacement during manual transmission repair
• Leak-related clutch contamination in affected vehicles

Installation Notes and Tips

Verify transmission type before installation; this seal is listed for vehicles with the New Process T355 transmission where noted. Confirm shaft diameter, housing bore, and seal width against the original part before pressing the seal into place. Clean the bore and shaft surface thoroughly, and inspect for scoring or wear that could affect sealing performance. National 471648 is also referenced by part number 471648 for application matching.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop replacement parts for modern vehicle service needs. The 471648 seal reflects that focus with application-specific dimensions and material selection for manual transmission repair.

• Fits 2007-2015 Jeep Compass, N/A, with New Process T355 Transmission
• Fits 2007-2015 Jeep Patriot, N/A, with New Process T355 Transmission
• Fits 2007-2012 Dodge Caliber, N/A, with New Process T355 Transmission
• Fits 2008-2012 Mitsubishi Lancer, N/A, with New Process T355 Transmission
• Fits 2016-2017 Jeep Compass, N/A
• Fits 2016-2017 Jeep Patriot, N/A