National 222025 Steering Gear Worm Shaft Seal

Steering Gear Worm Shaft Seal for Metric Applications

National 222025 is a metric steering gear worm shaft seal built for steering gear sealing service in a wide range of domestic and import vehicles. It uses a polyacrylate sealing material and a clockwise-spiral lip design to help maintain a tight seal at the shaft interface.

With a 20.000 mm inside diameter, 30.200 mm outside diameter, and 7.000 mm width, this oil seal is sized for steering gear housings that match the listed dimensions. National has supplied sealing solutions for more than 75 years, and the 222025 part number is used across many Mitsubishi, Hyundai, Kia, Chrysler, Dodge, and GM steering gear applications.

Key Features

• Part number: National 222025
• Steering gear worm shaft seal / oil seal
• Polyacrylate sealing material for steering system service
• Clockwise-spiral lip design
• Metric dimensions: 20.000 mm shaft ID, 30.200 mm OD, 7.000 mm width
• Housing bore: 30.000 mm
• Cross-reference example: Bosch 7900

Detailed Description

National 222025 is a steering gear worm shaft seal engineered for metric steering gear assemblies that require a 20 mm shaft diameter and a 30 mm housing bore. The polyacrylate material and spiral lip profile are specified to support sealing at the worm shaft area, where fluid retention and contamination control are critical to steering gear performance. This part is listed for a broad range of vehicles including Mitsubishi Eclipse, Mitsubishi Galant, Hyundai Sonata, Kia Optima, Chrysler Sebring, Dodge Stratus, and several GM rear-wheel-drive and van applications.

For buyers searching by fitment, this seal is commonly referenced for 1990-2012 Mitsubishi Eclipse, 1993-2012 Mitsubishi Galant, 1989-2005 Hyundai Sonata, 2001-2006 Kia Optima, and 2001-2005 Chrysler Sebring steering gear service. The National 222025 part number also appears in interchange listings for multiple OE and aftermarket references.

What This Part Helps Address

• Steering gear fluid leakage at the worm shaft seal area
• Contamination entering the steering gear housing
• Worn or hardened seal material in high-mileage steering systems
• Service needs on metric steering gear assemblies
• Restoration work on Mitsubishi Eclipse and Galant steering gear units

Installation Notes and Tips

Confirm shaft diameter, housing bore, and seal width before installation. This seal is specified for a 20.000 mm shaft and 30.000 mm housing bore, so matching the steering gear dimensions is essential for proper seating. Clean the bore and shaft surface thoroughly, inspect for scoring or wear, and verify that the steering gear application matches the listed fitment notes, especially on 1979 model-year vehicles with second-design shaft diameters.

• Fits 1990-2012 Mitsubishi Eclipse, N/A
• Fits 1993-2012 Mitsubishi Galant, N/A
• Fits 2001-2009 Kia Magentis, N/A
• Fits 2001-2006 Hyundai Santa Fe, N/A
• Fits 2001-2006 Kia Optima, N/A
• Fits 2004-2006 Mitsubishi Lancer, N/A
• Fits 2003-2006 Mitsubishi Outlander, N/A
• Fits 2001-2005 Chrysler Sebring, N/A
• Fits 2001-2005 Dodge Stratus, N/A
• Fits 1989-2005 Hyundai Sonata, N/A
• Fits 1997-1999 Mitsubishi Montero Sport, N/A
• Fits 1991-1996 Buick Roadmaster, N/A
• Fits 1980-1996 Cadillac Commercial Chassis, N/A
• Fits 1993-1996 Cadillac Fleetwood, N/A
• Fits 1985-1996 Chevrolet Astro, N/A
• Fits 1995-1996 Chevrolet Blazer, N/A
• Fits 1980-1996 Chevrolet Caprice, N/A
• Fits 1996 Chevrolet Express 1500, N/A
• Fits 1996 Chevrolet Express 2500, N/A
• Fits 1996 Chevrolet Express 3500, N/A
• Fits 1979-1996 Chevrolet G30, N/A
• Fits 1994-1996 Chevrolet Impala, N/A
• Fits 1982-1996 Chevrolet S10, N/A
• Fits 1979-1996 GMC G3500, N/A
• Fits 1992-1996 GMC Jimmy, N/A
• Fits 1985-1996 GMC Safari, N/A
• Fits 1996 GMC Savana 1500, N/A
• Fits 1996 GMC Savana 2500, N/A
• Fits 1996 GMC Savana 3500, N/A
• Fits 1991-1996 GMC Sonoma, N/A
• Fits 1996 Isuzu Hombre, N/A
• Fits 1990-1996 Mitsubishi Mighty Max, N/A
• Fits 1996 Oldsmobile Bravada, N/A
• Fits 1991-1994 Oldsmobile Bravada, N/A
• Fits 1979-1995 Chevrolet G10, N/A
• Fits 1979-1995 Chevrolet G20, N/A
• Fits 1979-1995 GMC G1500, N/A
• Fits 1979-1995 GMC G2500, N/A
• Fits 1992-1995 Mitsubishi Expo, N/A
• Fits 1991-1994 Chevrolet Commercial Chassis, N/A
• Fits 1983-1994 Chevrolet S10 Blazer, N/A
• Fits 1993-1994 Dodge Colt, N/A
• Fits 1989-1990 Dodge Colt, N/A
• Fits 1993-1994 Mitsubishi Expo LRV, N/A
• Fits 1990-1994 Plymouth Laser, N/A
• Fits 1990-1993 Dodge Ram 50, N/A
• Fits 1987-1992 Cadillac Brougham, N/A
• Fits 1980-1992 Chevrolet Camaro, N/A
• Fits 1984-1992 Chevrolet Corvette, N/A
• Fits 1980-1992 Oldsmobile Custom Cruiser, N/A
• Fits 1980-1992 Pontiac Firebird, N/A
• Fits 1980-1991 Cadillac Eldorado, N/A
• Fits 1983-1991 GMC S15 Jimmy, N/A
• Fits 1988-1990 Buick LeSabre, N/A
• Fits 1980-1986 Buick LeSabre, N/A
• Fits 1982-1990 GMC S15, N/A
• Fits 1987-1990 Mitsubishi Van, N/A
• Fits 1987-1989 Pontiac Safari, N/A
• Fits 1980-1987 Buick Regal, N/A
• Fits 1981-1987 Chevrolet Chevette, N/A
• Fits 1987 Hyundai Stellar, N/A
• Fits 1985-1987 Oldsmobile Cutlass, N/A; Fits Steering Gear Sector Shaft Seal with normal power steering.
• Fits 1985-1987 Oldsmobile Cutlass Salon, N/A
• Fits 1980 Oldsmobile Cutlass Salon, N/A
• Fits 1980-1987 Pontiac Acadian, N/A; Fits Steering Gear Sector Shaft Seal with normal power steering.
• Fits 1980-1987 Pontiac Grand Prix, N/A
• Fits 1981-1987 Pontiac T1000, N/A
• Fits 1980-1986 Buick Riviera, N/A
• Fits 1980-1986 Pontiac Bonneville, N/A
• Fits 1983-1986 Pontiac Parisienne, N/A
• Fits 1980-1985 Oldsmobile Delta 88, N/A
• Fits 1980-1985 Oldsmobile Toronado, N/A
• Fits 1980-1984 Cadillac DeVille, N/A
• Fits 1980-1984 Chevrolet Monte Carlo, N/A
• Fits 1980-1984 Oldsmobile 98, N/A
• Fits 1980-1984 Oldsmobile Cutlass Calais, N/A
• Fits 1980-1983 Chevrolet Malibu, N/A
• Fits 1980-1983 Oldsmobile Cutlass Cruiser, N/A
• Fits 1982-1983 Pontiac Grand LeMans, N/A; Fits Steering Gear Sector Shaft Seal with normal power steering.
• Fits 1980-1982 Pontiac Parisienne, N/A; Fits Steering Gear Sector Shaft Seal with normal power steering.
• Fits 1980-1981 Buick Century, N/A
• Fits 1981 Chevrolet Bel Air, N/A; Fits Steering Gear Sector Shaft Seal with normal power steering.
• Fits 1980-1981 Oldsmobile Cutlass, N/A
• Fits 1980-1981 Pontiac Catalina, N/A
• Fits 1980-1981 Pontiac Grand LeMans, N/A
• Fits 1980-1981 Pontiac Laurentian, N/A; Fits Steering Gear Sector Shaft Seal with normal power steering.
• Fits 1980-1981 Pontiac LeMans, N/A
• Fits 1980 Buick Skyhawk, N/A
• Fits 1980 Chevrolet Monza, N/A
• Fits 1980 Oldsmobile Starfire, N/A
• Fits 1980 Pontiac Grand Am, N/A
• Fits 1980 Pontiac Sunbird, N/A
• Fits 1979 Buick Century, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Buick LeSabre, N/A; 0.875 (in) Shaft Diameter; 2nd Design
• Fits 1979 Buick Regal, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Buick Riviera, N/A; 0.875 (in) Shaft Diameter; 2nd Design
• Fits 1979 Buick Skyhawk, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Buick Skylark, N/A; 0.875 (in) Shaft Diameter; 2nd Design
• Fits 1979 Cadillac Commercial Chassis, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Cadillac DeVille, N/A; 0.875 (in) Shaft Diameter; 2nd Design
• Fits 1979 Cadillac Eldorado, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Cadillac Fleetwood, N/A; 0.875 (in) Shaft Diameter; 2nd Design
• Fits 1979 Cadillac Seville, N/A; 0.750 (in) Shaft Diameter; 2nd Design
• Fits 1979 Chevrolet Camaro, N/A; 0.875 (in) Shaft Diameter; 2nd Design
• Fits 1979 Chevrolet Caprice, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Chevrolet Corvette, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Chevrolet Impala, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Chevrolet Malibu, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Chevrolet Monte Carlo, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Chevrolet Monza, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Oldsmobile 98, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Oldsmobile Custom Cruiser, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Oldsmobile Cutlass, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Oldsmobile Cutlass Calais, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Oldsmobile Cutlass Salon, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Oldsmobile Delta 88, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Oldsmobile Omega, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Oldsmobile Starfire, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Oldsmobile Toronado, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Pontiac Acadian, N/A; 0.787 (in) Shaft Diameter; 2nd Design; with Normal Power Steering
• Fits 1979 Pontiac Bonneville, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Pontiac Catalina, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Pontiac Firebird, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Pontiac Grand Am, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Pontiac Grand LeMans, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Pontiac Grand Prix, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Pontiac Laurentian, N/A; 0.787 (in) Shaft Diameter; 2nd Design; with Normal Power Steering
• Fits 1979 Pontiac LeMans, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Pontiac Parisienne, N/A; 0.787 (in) Shaft Diameter; 2nd Design; with Power Steering
• Fits 1979 Pontiac Phoenix, N/A; 0.787 (in) Shaft Diameter; 2nd Design
• Fits 1979 Pontiac Sunbird, N/A; 0.787 (in) Shaft Diameter; 2nd Design

Quality Assurance

National has supplied premium sealing solutions for more than 75 years and continues to develop sealing products for modern vehicle service needs. National 222025 is part of the 220000 series and is built to the listed metric dimensions for steering gear sealing applications.