Parts Geek - For 1975-1978 GMC C15 Fan Clutch 34736MXCT 1976 1977. 1975-1978 GMC C15 5.7L V8. 1975-1977 GMC C15 4.8L 6 Cyl. 1975-1977 GMC C15 4.1L 6 Cyl. 1977-1978 GMC C15 5.0L V8. Notes:Standard Duty Thermal Fan Clutch; With Standard Duty Fan Clutch.
