InMotion WS331107N Automatic Transmission Oil Pump Seal - Front

Automatic Transmission Oil Pump Seal for Ford Applications

The InMotion WS331107N is a silicone automatic transmission oil pump seal built for front-position applications across a wide range of Ford, Mercury, and Lincoln vehicles. It is sized for a 2.000-inch inside diameter with a 2.750-inch outside diameter and 0.375-inch thickness for a precise sealing fit.

Use this seal when servicing transmission sealing systems on vehicles such as the Ford F-150, Ford Bronco, and Mercury Grand Marquis. The WS331107N is engineered to help maintain a secure barrier at the pump area and support clean, leak-resistant operation.

• Silicone sealing material for consistent flexibility
• Inside diameter: 2.000 in.
• Outside diameter: 2.750 in.
• Thickness/width: 0.375 in.
• Housing bore: 2.746 in.
• Shaft diameter: 2.000 in.
• Front-position fitment

Detailed Product Overview

InMotion WS331107N is a transmission seal designed around exact dimensional requirements for front-mounted applications. The silicone construction helps create a tight seal at the pump interface, where accurate fitment matters for controlling fluid retention and keeping contaminants out of sensitive internal components. This part is listed for a broad range of classic Ford, Mercury, and Lincoln vehicles, including Ford E-150 Econoline, Ford F-250, Ford Mustang, Mercury Cougar, and Lincoln Town Car applications. For buyers searching by part number, WS331107N is the reference to use when matching the seal to the correct transmission service application.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Seal Helps Address

• Transmission fluid seepage at the pump seal area
• Contamination entering the sealing surface
• Wear-related sealing loss from age and heat
• Service issues on front-position transmission assemblies
• Fitment matching for Ford, Mercury, and Lincoln transmission repairs

Installation Notes and Tips

Confirm the housing bore, shaft diameter, and seal thickness before installation. Clean the sealing surfaces thoroughly and inspect the pump area for scoring, burrs, or debris that could affect the seal. Verify transmission-specific notes in the fitment list, especially where Ford C4, C5, C6, FMX, AOD, or Borg Warner DG200 references are shown. Professional installation is recommended for transmission service work.

Quality Assurance

InMotion manufactures this seal with precision-focused dimensions and silicone sealing material to support reliable service in demanding transmission applications. Part number WS331107N is specified for front-position use across confirmed Ford, Mercury, and Lincoln fitments.

Compatible Vehicles

• Fits 1976-1996 Ford E-150 Econoline, front
• Fits 1976-1996 Ford E-150 Econoline Club Wagon, front
• Fits 1990-1996 Ford E-250 Econoline, front
• Fits 1976-1988 Ford E-250 Econoline, front
• Fits 1975-1996 Ford E-350 Econoline, front
• Fits 1977-1996 Ford E-350 Econoline Club Wagon, front
• Fits 1975-1996 Ford F-150, front
• Fits 1980-1996 Ford F-250, front
• Fits 1964-1974 Ford F-250, front
• Fits 1990-1996 Ford F-350, front
• Fits 1964-1988 Ford F-350, front
• Fits 1966-1994 Ford Bronco, front
• Fits 1979-1993 Ford Mustang, front
• Fits 1964-1973 Ford Mustang, front
• Fits 1966-1993 Ford Thunderbird, front
• Fits 1975-1993 Mercury Cougar, front
• Fits 1967-1973 Mercury Cougar, front
• Fits 1984-1992 Lincoln Mark VII, front
• Fits 1987-1991 Ford LTD Crown Victoria, front
• Fits 1981-1991 Lincoln Town Car, front
• Fits 1979-1991 Mercury Grand Marquis, front
• Fits 1966-1985 Ford LTD, front
• Fits 1984 Ford Bronco II, front
• Fits 1983-1984 Ford Ranger, front
• Fits 1964-1983 Ford F-100, front
• Fits 1971-1980 Ford Pinto, front
• Fits 1975-1980 Mercury Bobcat, front
• Fits 1975-1980 Mercury Monarch, front
• Fits 1968-1976 Mercury Montego, front
• Fits 1969-1983 Ford E-100 Econoline, front
• Fits 1975-1983 Ford E-100 Econoline Club Wagon, front
• Fits 1980-1983 Lincoln Mark VI, front
• Fits 1977-1980 Lincoln Versailles, front
• Fits 1983 Ford Fairmont, front
• Fits 1978-1981 Ford Fairmont, front
• Fits 1983 Mercury Zephyr, front
• Fits 1978-1981 Mercury Zephyr, front
• Fits 1982 Ford Fairmont, front with Ford C4 Transmission
• Fits 1982 Mercury Capri, front with Ford C4 Transmission
• Fits 1982 Mercury Zephyr, front with Ford C4 Transmission
• Fits 1983-1986 Mercury Capri, front
• Fits 1979-1981 Mercury Capri, front
• Fits 1972-1977 Mercury Capri, front
• Fits 1985-1986 Mercury Marquis, front with Ford C5 Transmission
• Fits 1980-1984 Mercury Marquis, front
• Fits 1967-1977 Mercury Marquis, front
• Fits 1987-1991 Mercury Colony Park, front
• Fits 1974 Mercury Colony Park, front with 3-Speed Ford C4 Transmission
• Fits 1972 Mercury Colony Park, front with 3-Speed Ford C4 Transmission
• Fits 1973 Mercury Colony Park, front with 3-Speed Ford FMX Transmission
• Fits 1966-1971 Mercury Colony Park, front with 3-Speed Ford C6 Transmission
• Fits 1969-1970 Mercury Marauder, front
• Fits 1966 Mercury Marauder, front with 3-Speed Ford C6 Transmission
• Fits 1964-1967 Ford Econoline, front with 3-Speed Ford C4 Transmission
• Fits 1961-1963 Ford Econoline, front with 2-Speed Borg Warner DG200 Transmission
• Fits 1962-1963 Mercury Villager, front with 2-Speed Borg Warner DG200 Transmission
• Fits 1964-1966 Mercury Villager, front with 3-Speed Ford C4 Transmission
• Fits 1967 Mercury Villager, front with 3-Speed Ford C6 Transmission
• Fits 1966-1967 Mercury Capri, front with 3-Speed Ford C6 Transmission