This 12V DD (Direct Drive) starter is a replacement part designed for medium and heavy-duty trucks requiring a 42MT starter.It is compatible with models from International, -, and other manufacturers that use starter part numbers 10461062, 10461075, or AC Delco 323-873.Rotation is clockwise (CW) and it has 11 teeth. Compatible applications include: Argosy 2000–2002 with 3406 engine 1990–1993 with 3176, 3406, N14, or DD 60 Series engines FL FLC 112 / 120 1986–1999 with 3176, 3406, L-10, N14, DD 60 Series, or DD 6V-92 engines FL 90 1992–1993 with DD 50 Series engine FLD 112 / 120 1986–1992 with 3176, 3406, L-10, N14, or DD 60 Series engines FLT Series 1986–1987 with 3406 engine International 5000–5900 Series Severe Service 2003–2007 with C-13 engine International 7100–7700 Severe Service 2005–2007 with C-11 or C-13 engine International 8100–8600 Heavy-Duty 2005–2007 with C-13 engine International 9100–9900 Heavy-Duty 2005–2007 with C-11 or C-13 engine - C500 1984–2007 with 3176, 3406, C-10, C-11, C-12, C-15, C-16, L-10, ISM, ISX, N14, Signature, or DD 60 Series engines - K100 1984–1989 with 3406, L-10, NTC-855, or DD 6V-92 engines