InMotion WS1981 Manual Transmission Output Shaft Seal - Front Inner or Rear

Manual Transmission Output Shaft Seal for Select Applications

Restore sealing performance at the transmission output shaft with the InMotion WS1981 manual transmission output shaft seal. Built from nitrile and sized for a precise housing and shaft fit, it helps keep gear oil contained while blocking dirt and moisture from entering the transmission area.

Fits a wide range of manual transmission applications, including Nissan Frontier, Ford Ranger, Toyota Tacoma, Jeep Wrangler, and Mazda B4000 models across multiple years and transmission codes.

Key Features

• Nitrile construction for dependable sealing performance
• External marking: NAK TC 30 45 8
• Shaft diameter: 1.181 in. / 30 mm
• Outside diameter: 1.78 in. / 45.2 mm
• Housing bore: 1.772 in. / 45 mm
• Thickness: 0.315 in. / 8 mm
• Part number WS1981 for accurate ordering and fitment lookup

Detailed Description

The InMotion WS1981 is a manual transmission output shaft seal engineered to create a tight barrier at the transmission interface. Its nitrile material is selected for sealing durability, while the listed dimensions help support proper seating in the housing bore and around the shaft. This seal is a practical replacement choice for vehicles such as Nissan Frontier, Ford Ranger, Toyota Tacoma, and Jeep Wrangler applications that require a correctly sized output shaft seal.

This part cross-references OE-style applications where the same seal dimensions and transmission requirements are used. For buyers searching by fitment, WS1981 is a useful reference when replacing a manual transmission output shaft seal on select Nissan, Toyota, Ford, Jeep, Mazda, and Lexus vehicles.

What It Helps Address

• Transmission fluid seepage at the output shaft
• Contamination from road debris and moisture
• Seal wear that can lead to low fluid levels
• Leaks caused by age, heat, and mileage
• Service needs on manual transmission rebuilds or repairs

Installation Notes and Tips

Verify the transmission code, shaft diameter, housing bore, and seal thickness before installation. Clean the sealing surface thoroughly and inspect the shaft for grooves or damage that could affect sealing. Proper alignment during installation is important to avoid distortion of the nitrile lip and to maintain a secure seal.

Compatible fitment examples include Fits 2016-2019 Nissan Frontier, N/A TransmissionMfr; Fits 2009-2011 Ford Ranger, with Mazda M5R1HD Transmission; Fits 1995-2004 Toyota Tacoma, W59 TransmissionMfrCode; Fits 1997-2002 Jeep Wrangler, N/A; and Fits 2006-2009 Mazda B4000, N/A.

Quality Assurance

InMotion manufactures this seal with precision sizing and quality materials to support reliable sealing performance in manual transmission service. Part number WS1981 is specified for accurate identification during replacement and rebuild work.