National 223012 Manual Transmission Input Shaft Seal - Front

Manual Transmission Input Shaft Seal for Ford and Mazda

National 223012 is a metric manual transmission input shaft seal built for applications that use Mazda M5R2, M5R2C, and M5R4 transmissions in select Ford, Mazda, Mercury, and Kia vehicles. With a polyacrylate sealing material and a clockwise-spiral lip design, it is specified for controlled sealing at the transmission input shaft.

Key Features

• Part number 223012 manual transmission input shaft seal
• Polyacrylate sealing material for transmission oil sealing
• Clockwise-spiral lip design
• Metric dimensions: 30.000 mm shaft ID, 44.200 mm outside diameter, 7.000 mm width
• Housing bore: 44.000 mm
• National 220000 series oil seal
• Cross-reference: MAHLE 47699

Product Details

This National transmission seal is engineered to match the dimensional requirements of the application, with a 1.181 inch inside diameter, 1.740 inch outside diameter, and 0.276 inch thickness. The polyacrylate sealing material is selected for transmission sealing service, while the spiral lip profile helps maintain sealing contact at the input shaft. National 223012 is a direct-fit style oil seal for manual transmission service in vehicles such as Ford F-150, Ford Bronco, Mazda 626, Mazda MX-6, and Mercury Tracer applications listed below.

Common Uses

• Replacing a leaking manual transmission input shaft seal
• Addressing transmission fluid seepage at the input shaft area
• Restoring sealing performance after clutch or transmission service
• Correcting fluid loss on Mazda M5R2, M5R2C, or M5R4 transmission applications
• Servicing Ford F-150, Ford Bronco, and Mazda passenger car manual transmissions

Fitment Notes

• Fits 2004-2007 Ford F-150, N/A, with Mazda M5R2C Transmission
• Fits 2004 Ford F-150 Heritage, N/A, with Mazda M5R2C Transmission
• Fits 1988-2003 Ford F-150, N/A, with Mazda M5R2 Transmission
• Fits 2002 Ford Explorer, N/A, with Mazda M5R4 Transmission
• Fits 2002 Ford Explorer Sport, N/A, with Mazda M5R4 Transmission
• Fits 1993-2002 Mazda 626, N/A
• Fits 1995-2002 Mazda Millenia, N/A
• Fits 1988-1999 Ford F-250, N/A, with Mazda M5R2 Transmission
• Fits 1994-1997 Ford Aspire, N/A
• Fits 1997 Ford F-250 HD, N/A, with Mazda M5R2 Transmission
• Fits 1993-1997 Ford Probe, N/A
• Fits 1993-1997 Mazda MX-6, N/A
• Fits 1988-1996 Ford Bronco, N/A, with Mazda M5R2 Transmission
• Fits 1989-1995 Ford Thunderbird, N/A, with Mazda M5R2 Transmission
• Fits 1994-1995 Kia Sephia, N/A
• Fits 1986-1995 Mazda 323, N/A
• Fits 1992-1995 Mazda MX-3, N/A
• Fits 1990-1994 Mazda Protege, N/A
• Fits 1988-1993 Ford Festiva, N/A
• Fits 1992 Ford Festiva, Front, To 01/31/1992
• Fits 1991 Ford Escort, Front, To 01/31/1991
• Fits 1988-1991 Ford Festiva, Front
• Fits 1991 Mazda 323, Front, To Serial Number -221256
• Fits 1991 Mazda 323, Front, To Serial Number -260401
• Fits 1991 Mazda Miata, Front, To Serial Number -209446
• Fits 1991 Mazda Protege, Front, To Serial Number -260401
• Fits 1991 Mazda Protege, Front, To Serial Number -237236
• Fits 1991 Mercury Capri, Front, To 11/30/1990
• Fits 1991 Mercury Tracer, Front, To 01/31/1991
• Fits 1986-1990 Mazda 323, Front
• Fits 1990 Mazda Miata, Front
• Fits 1990 Mazda Protege, Front
• Fits 1989-1990 Mercury Cougar, N/A, with Mazda M5R2 Transmission
• Fits 1987-1990 Mercury Tracer, Front
• Fits 1988-1989 Ford E-150 Econoline, N/A, with Mazda M5R2 Transmission
• Fits 1988-1989 Ford E-150 Econoline Club Wagon, N/A, with Mazda M5R2 Transmission
• Fits 1988-1989 Ford E-350 Econoline, N/A, with Mazda M5R2 Transmission
• Fits 1987-1989 Mercury Tracer, N/A
• Fits 1984-1987 Ford Escort, Front
• Fits 1984-1987 Mercury Lynx, Front
• Fits 1984-1986 Ford Tempo, Front
• Fits 1984-1986 Mercury Topaz, Front

Installation Notes

Confirm shaft diameter, housing bore, and seal width before installation. Clean the bore and shaft surface thoroughly, and inspect for wear, scoring, or contamination that could affect sealing. Use proper installation tools to seat the seal evenly and avoid damaging the lip or housing.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern vehicle service needs. Part number 223012 is built to the listed metric dimensions and application requirements for consistent transmission sealing performance.