Neapco OE Series N6.3-4-5221-1X
    Allison Transmission 15708544
    Daimler Truck North America 30011-3529
    Daimler Truck North America SP 6.3 4 5221 1X
    Daimler Truck North America SP 6.3 4 5221 1XH
    Daimler Truck North America SP 6.3 4 5221 1XHP
    Dana Commercial Vehicle Service Parts 127622
    Dana Commercial Vehicle Service Parts 176MU41P2
    Dana Commercial Vehicle Service Parts 176MU51P40
    Dana Commercial Vehicle Service Parts 2104-63452211X
    General Motors 15708544
    Volvo 176MU41P2
    Volvo 176MU51P40
    Volvo 2104-63452211X
    Volvo 8167471
    Volvo SP 63452211X
    International Harvester (IHC) 2017786C91
    International Harvester (IHC) 63452211X
    International Harvester (IHC) D63452211X
    International Harvester (IHC) E63452211X
    International Harvester (IHC) ETN0127622
    International Harvester (IHC) SB63452211X
    International Harvester (IHC) SD63452211X
    International Harvester (IHC) SD65442711X
    McNeilus 9HA127
    Navistar 2017786C91
    Navistar D63452211X
    Navistar DS63452211X
    Navistar E63452211X
    Navistar ETN0127622
    Navistar SD63452211X
    Navistar SD65442711X
    Paccar Parts 6.3-4-5221-1X
    Mack 176MU41P2
    Mack 176MU51P40
    Mack 2104-63452211X
    Mack 25044914
    Mack 25167614
    Freightliner 30011-3529
    Freightliner SP 6.3 4 5221 1X
    Freightliner SP 6.3 4 5221 1XH
    Peterbilt 6.3-4-5221-1X
    Peterbilt 9HA127
    UAP 6.3-4-5221-1X