InMotion WS7412S Manual Transmission Input Shaft Seal

Manual Transmission Input Shaft Seal for Precision Sealing

The InMotion WS7412S is a nitrile manual transmission input shaft seal built to maintain a tight barrier at the transmission opening. It helps keep contaminants out and fluid in, supporting cleaner operation in manual gearboxes across a wide range of classic and late-model applications.

Compatible With select Chevrolet Camaro, Ford Mustang, Dodge Challenger, and Corvette manual transmission applications, this seal is specified for vehicles using common Tremec, Borg-Warner, New Process, and related transmission codes. The WS7412S is engineered for accurate sealing performance where shaft and housing dimensions must match closely.

Key Features

• Nitrile construction for dependable sealing performance
• Inside diameter: 1.25 in.
• Outside diameter: 1.754 in.
• Thickness: 0.25 in.
• Shaft diameter: 1.25 in.
• Housing bore: 1.75 in.
• Designed for manual transmission input shaft sealing applications
• Part number: WS7412S

Detailed Description

InMotion WS7412S is a precision-fit seal intended for manual transmission input shaft service where contamination control and fluid retention are critical. The nitrile material offers a practical balance of flexibility and sealing integrity, while the listed dimensions help ensure proper fit at the shaft and housing bore. This seal is used across many performance cars, trucks, and older GM, Ford, Jeep, Dodge, and Isuzu manual transmission platforms, including applications with TR6060, TR3160, TR6070, TR3650, T56, T5, T18, and related transmission codes. If you are servicing a Chevrolet Corvette, Ford Mustang, or Dodge Challenger manual gearbox, WS7412S is a direct-fit sealing component for the specified applications.

What It Helps Fix

• Transmission fluid seepage at the input shaft area
• Contamination entering the transmission through a worn seal
• Moisture intrusion around the input shaft opening
• Seal wear from age, heat, and mileage
• Loss of sealing integrity during manual transmission service

Installation Notes and Tips

Verify transmission code, shaft diameter, and housing bore before installation. Clean the sealing surface thoroughly and inspect the input shaft for scoring or wear that could affect seal life. Proper alignment during installation is important to avoid damaging the nitrile lip and to maintain a uniform seal. Confirm the application against the vehicle’s transmission code, especially on models such as Camaro, Mustang, Challenger, and Corvette where multiple manual transmissions were used.

Quality Assurance

InMotion manufactures this seal with precision-focused materials and dimensions for the listed manual transmission applications. Part number WS7412S is built to meet the sealing requirements of the specified fitments.