This Dayco Engine Water Pump fits your 1978 GMC K15 4.1L L6 and is perfect for a tune up or performance upgrade. .
Dayco Water Pump for 1974 GMC G35 G3500 Van 7.4L V8 - Coolant Antifreeze zn
Dayco Water Pump for 1973-1977 American Motors Hornet 5.0L 5.9L V8 - Coolant yo
Dayco Water Pump for 1969-1972 Chevrolet Biscayne 6.5L 6.6L 7.0L 7.4L V8 - iz
Dayco Water Pump for 1976-1978 GMC K25 7.4L V8 - Coolant Antifreeze Engine dg
Dayco Water Pump for 1990 GMC P4500 4.3L V6 - Coolant Antifreeze Engine fp
Dayco Water Pump for 1974 GMC G35 G3500 Van 7.4L V8 - Coolant Antifreeze po
