1989 Kenworth C500 Engine: 12.7L L6 DIESEL; Position: Alternator and Air Conditioning;. 1990 Kenworth C500 Engine: 12.7L L6 DIESEL; Optional Belt; Position: Alternator and Air Conditioning;. 1991 Kenworth C500 Engine: 12.7L L6 DIESEL; Optional Belt; Position: Alternator and Air Conditioning;.
