Heater core (front unit) in original equipment manufacturer´s quality for:
Chevrolet/Chevy/GMC Blazer/Jimmy without Air Conditioning 1973-1991*,
Chevrolet/GMC Suburban without Air Conditioning 1973-1991* (front),
Chevrolet/GMC R/V 10-3500 Pickup without Air Conditioning 1987-1991 &
Chevrolet/GMC C/K 10-3500 Pickup without Air Conditioning 1973-1986