National 224450 Automatic Transmission Torque Converter Seal

National 224450 Transmission Seal for Nissan and INFINITI

National 224450 is an automatic transmission torque converter seal built with a polyacrylate sealing material and a clockwise-spiral lip design. It is sized for metric applications with a 44.000 mm shaft diameter, 59.230 mm outside diameter, and 6.800 mm width for precise sealing performance in supported Nissan and INFINITI transmissions.

Key Features

• Polyacrylate construction for transmission sealing applications
• Clockwise-spiral lip design for controlled sealing contact
• Metric dimensions: 44.000 mm inside diameter, 59.230 mm outside diameter, 6.800 mm width
• Series 220000 oil seal design
• National part number 224450 for direct reference

Fitment and Application Details

This National 224450 seal is listed for a range of Nissan, INFINITI, and Mercury vehicles with Jatco RE4F04A, RE4F04B, and RE4F04V transmission applications. Fits 2002-2006 Nissan Altima, N/A; Fits 2004-2006 Nissan Quest, N/A; Fits 2002-2006 Nissan Sentra, N/A; Fits 2005-2006 Nissan X-Trail, N/A; Fits 2002-2004 INFINITI I35, N/A; Fits 2002-2004 Nissan Maxima, N/A; Fits 1996-2001 INFINITI I30, N/A; Fits 1993-2001 Nissan Altima, N/A; Fits 1992-2001 Nissan Maxima, N/A; Fits 1993-1998 Mercury Villager, N/A; Fits 1993-1998 Nissan Quest, N/A; Fits 1993-1997 Nissan Altima, N/A.

This part cross-references BBB Industries 17134 for the same application.

What This Seal Helps Address

• Transmission fluid leakage at the torque converter or output shaft area
• Seal wear from age, heat, and fluid exposure
• Drips or seepage around the transmission housing bore
• Loss of sealing integrity during transmission service
• Replacement needs on Nissan Altima, Maxima, Quest, Sentra, X-Trail, and INFINITI I30/I35 applications

Installation Notes and Tips

Verify shaft, housing bore, and width dimensions before installation to confirm the seal matches the transmission case. Inspect the sealing surface for scoring, contamination, or burrs, and replace any worn components that could affect seal life. Clean the bore thoroughly and install the seal squarely to avoid lip damage during assembly.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop OE-style sealing products for modern vehicle applications. Part number 224450 reflects National’s established transmission sealing lineup for metric fitments.