National 471645 Steering Gear Worm Shaft Seal

Steering Gear Worm Shaft Seal for Ford Applications

National 471645 is a steering gear worm shaft seal built for Ford-design steering systems across a wide range of Ford, Lincoln, Mercury, and Mazda vehicles. It uses nitrile sealing material with Redi-Coat treatment to support a reliable seal at the steering gear housing.

National has supplied sealing solutions for more than 75 years, and this part reflects that focus with precise dimensions and OE-style application coverage. If you are servicing a Ford Ranger, F-150, or Bronco steering gear, National 471645 is a direct-fit sealing component for the listed Ford-design applications.

Key Features

• Steering gear worm shaft seal for Ford-design steering systems
• Nitrile sealing material for dependable fluid sealing
• Redi-Coat finish for improved sealing performance
• Inside diameter: 0.812 in. / 20.620 mm
• Outside diameter: 1.628 in. / 41.350 mm
• Thickness: 0.250 in. / 6.350 mm
• Housing bore: 1.624 in. / 41.250 mm
• Zero duplication part in the National 470000 series

Detailed Description

National 471645 is an oil seal used in steering gear worm shaft applications where accurate sizing and material compatibility matter. The seal measures 0.812 inch inside diameter, 1.628 inch outside diameter, and 0.250 inch thickness, with metric equivalents listed for service reference. Its nitrile construction is suited to sealing duties in steering gear assemblies, and the Redi-Coat surface treatment supports installation and sealing consistency.

This part cross-references Gates 26162 for the same application. It is listed for Ford Ranger, Ford F-150, Ford Bronco, Ford Explorer, and Ford E-150 Econoline steering gear service, along with many other Ford, Lincoln, Mercury, and Mazda models built with Ford design steering components. National 471645 is a practical choice when replacing a worn steering gear worm shaft seal on Ford-design systems.

What This Part Helps Address

• Steering gear fluid seepage at the worm shaft area
• Loss of seal integrity from age or wear
• Contamination entering the steering gear housing
• Service issues caused by an incorrect seal size
• Steering gear maintenance on Ford-design applications

Installation Notes and Tips

Verify the shaft and housing dimensions before installation, especially the 0.812 inch shaft size and 1.624 inch housing bore reference. Clean the sealing surface thoroughly and inspect the steering gear for wear, scoring, or contamination before installing the new seal. Confirm vehicle-specific fitment for Ford-design steering gear applications, including 1983-2003 Ford Ranger, 1975-1996 Ford F-150, 1975-1996 Ford Bronco, and 1991-1994 Ford Explorer.

• Fits 1983-2003 Ford Ranger, N/A, with Ford Design
• Fits 2001-2003 Mazda B2300, N/A, with Ford Design
• Fits 1994-1997 Mazda B2300, N/A, with Ford Design
• Fits 1994-2003 Mazda B3000, N/A, with Ford Design
• Fits 1994-2003 Mazda B4000, N/A, with Ford Design
• Fits 1998-2001 Mazda B2500, N/A, with Ford Design
• Fits 1986-1997 Ford Aerostar, N/A, with Ford Design
• Fits 1975-1996 Ford Bronco, N/A, with Ford Design
• Fits 1979-1996 Ford E-150 Econoline, N/A, with Ford Design
• Fits 1979-1996 Ford E-150 Econoline Club Wagon, N/A, with Ford Design
• Fits 1985-1996 Ford E-250 Econoline, N/A, with Ford Design
• Fits 1975-1983 Ford E-250 Econoline, N/A, with Ford Design
• Fits 1985-1996 Ford E-350 Econoline, N/A, with Ford Design
• Fits 1979-1983 Ford E-350 Econoline, N/A, with Ford Design
• Fits 1985-1996 Ford E-350 Econoline Club Wagon, N/A, with Ford Design
• Fits 1979-1983 Ford E-350 Econoline Club Wagon, N/A, with Ford Design
• Fits 1987-1996 Ford Escort, N/A
• Fits 1975-1996 Ford F-150, N/A, with Ford Design
• Fits 1975-1996 Ford F-250, N/A, with Ford Design
• Fits 1975-1996 Ford F-350, N/A, with Ford Design
• Fits 1991-1996 Mercury Tracer, N/A
• Fits 1986-1995 Ford Taurus, N/A
• Fits 1982-1995 Lincoln Continental, N/A
• Fits 1980 Lincoln Continental, N/A
• Fits 1986-1995 Mercury Sable, N/A
• Fits 1992-1994 Ford Crown Victoria, N/A
• Fits 1991-1994 Ford Explorer, N/A, with Ford Design
• Fits 1983-1994 Ford Mustang, N/A
• Fits 1987-1994 Ford Tempo, N/A
• Fits 1981-1994 Lincoln Town Car, N/A
• Fits 1994 Mazda Navajo, N/A, with Ford Design
• Fits 1980-1994 Mercury Grand Marquis, N/A
• Fits 1987-1994 Mercury Topaz, N/A
• Fits 1983-1993 Ford Thunderbird, N/A
• Fits 1993 Lincoln Mark VIII, N/A
• Fits 1983-1993 Mercury Cougar, N/A
• Fits 1984-1992 Lincoln Mark VII, N/A
• Fits 1985-1991 Ford E-250 Econoline Club Wagon, N/A, with Ford Design
• Fits 1975-1983 Ford E-250 Econoline Club Wagon, N/A, with Ford Design
• Fits 1987-1991 Ford LTD Crown Victoria, N/A
• Fits 1987-1991 Mercury Colony Park, N/A
• Fits 1984-1990 Ford Bronco II, N/A, with Ford Design
• Fits 1987 Mercury Lynx, N/A
• Fits 1980-1986 Ford LTD, N/A
• Fits 1983-1986 Mercury Capri, N/A
• Fits 1980-1986 Mercury Marquis, N/A
• Fits 1979-1983 Ford E-100 Econoline, N/A, with Ford Design
• Fits 1979-1983 Ford E-100 Econoline Club Wagon, N/A, with Ford Design
• Fits 1975-1983 Ford F-100, N/A, with Ford Design
• Fits 1978-1983 Ford Fairmont, N/A, with Ford Design
• Fits 1980-1983 Lincoln Mark VI, N/A
• Fits 1978-1983 Mercury Zephyr, N/A, with Ford Design
• Fits 1979-1982 Ford Mustang, N/A, with Ford Design
• Fits 1975-1982 Ford Thunderbird, N/A, with Ford Design
• Fits 1979-1982 Mercury Capri, N/A, with Ford Design
• Fits 1975-1982 Mercury Cougar, N/A, with Ford Design
• Fits 1975-1980 Ford Pinto, N/A, with Ford Design
• Fits 1977-1980 Lincoln Versailles, N/A, with Ford Design
• Fits 1975-1980 Mercury Bobcat, N/A, with Ford Design
• Fits 1975-1980 Mercury Monarch, N/A, with Ford Design
• Fits 1975-1979 Ford LTD, N/A, with Ford Design
• Fits 1977-1979 Lincoln Continental, N/A, with Ford Design
• Fits 1975-1979 Mercury Grand Marquis, N/A, with Ford Design
• Fits 1975-1979 Mercury Marquis, N/A, with Ford Design
• Fits 1975-1976 Mercury Montego, N/A, with Ford Design

Quality Assurance

National is a long-established sealing brand with more than 75 years of experience in premium sealing solutions. Part number 471645 is built to the listed dimensions and application coverage for Ford-design steering gear service.