Product Description
Doug's Tri Y Header 63-91 GM Truck 396-502 BBC 1 3/4-2" Primary 2 1/2" Collector Black Hi Temp Coated D303Y-BThis Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1973-1974 | Chevrolet | Blazer | |
| 1975-1980 | Chevrolet | C10 | |
| 1968-1969 | Chevrolet | C10 Pickup | |
| 1970-1972 | Chevrolet | C10 Pickup | |
| 1973-1974 | Chevrolet | C10 Pickup | |
| 1968-1969 | Chevrolet | C10 Suburban | |
| 1970-1972 | Chevrolet | C10 Suburban | |
| 1973-1980 | Chevrolet | C10 Suburban | |
| 1975-1986 | Chevrolet | C20 | |
| 1968-1969 | Chevrolet | C20 Pickup | |
| 1970-1972 | Chevrolet | C20 Pickup | |
| 1973-1974 | Chevrolet | C20 Pickup | |
| 1968-1969 | Chevrolet | C20 Suburban | |
| 1970-1972 | Chevrolet | C20 Suburban | |
| 1973-1986 | Chevrolet | C20 Suburban | |
| 1975-1986 | Chevrolet | C30 | |
| 1968-1969 | Chevrolet | C30 Pickup | |
| 1970-1972 | Chevrolet | C30 Pickup | |
| 1973-1974 | Chevrolet | C30 Pickup | |
| 1976,1980 | Chevrolet | K10 | |
| 1968-1969 | Chevrolet | K10 Pickup | |
| 1970-1972 | Chevrolet | K10 Pickup | |
| 1973-1974 | Chevrolet | K10 Pickup | |
| 1968-1969 | Chevrolet | K10 Suburban | |
| 1970-1972 | Chevrolet | K10 Suburban | |
| 1973-1974 | Chevrolet | K10 Suburban | |
| 1976-1978 | Chevrolet | K20 | |
| 1968-1969 | Chevrolet | K20 Pickup | |
| 1970-1972 | Chevrolet | K20 Pickup | |
| 1973-1974 | Chevrolet | K20 Pickup | |
| 1968-1969 | Chevrolet | K20 Suburban | |
| 1970-1972 | Chevrolet | K20 Suburban | |
| 1973-1974,1985 | Chevrolet | K20 Suburban | |
| 1977,1980-1986 | Chevrolet | K30 | |
| 1968-1969 | Chevrolet | K30 Pickup | |
| 1970-1972 | Chevrolet | K30 Pickup | |
| 1973-1974 | Chevrolet | K30 Pickup | |
| 1976-1978 | Chevrolet | K5 Blazer | |
| 1987-1988 | Chevrolet | R20 | |
| 1987-1988 | Chevrolet | R20 Suburban | |
| 1989 | Chevrolet | R2500 | |
| 1989-1991 | Chevrolet | R2500 Suburban | |
| 1987-1988 | Chevrolet | R30 | |
| 1989-1991 | Chevrolet | R3500 | |
| 1987-1988 | Chevrolet | V20 Suburban | |
| 1990 | Chevrolet | V2500 Suburban | |
| 1987-1988 | Chevrolet | V30 | |
| 1989-1991 | Chevrolet | V3500 | |
| 1975-1978 | GMC | C15 | |
| 1975-1978 | GMC | C15 Suburban | |
| 1968-1969 | GMC | C15/C1500 Pickup | |
| 1970-1972 | GMC | C15/C1500 Pickup | |
| 1973-1974 | GMC | C15/C1500 Pickup | |
| 1968-1969 | GMC | C15/C1500 Suburban | |
| 1970-1972 | GMC | C15/C1500 Suburban | |
| 1973-1974 | GMC | C15/C1500 Suburban | |
| 1979-1980 | GMC | C1500 | |
| 1979-1980 | GMC | C1500 Suburban | |
| 1975-1978 | GMC | C25 | |
| 1975-1978 | GMC | C25 Suburban | |
| 1968-1969 | GMC | C25/C2500 Pickup | |
| 1970-1972 | GMC | C25/C2500 Pickup | |
| 1973-1974 | GMC | C25/C2500 Pickup | |
| 1968-1969 | GMC | C25/C2500 Suburban | |
| 1970-1972 | GMC | C25/C2500 Suburban | |
| 1973-1974 | GMC | C25/C2500 Suburban | |
| 1979-1986 | GMC | C2500 | |
| 1979-1986 | GMC | C2500 Suburban | |
| 1975-1978 | GMC | C35 | |
| 1968-1969 | GMC | C35/C3500 Pickup | |
| 1970-1972 | GMC | C35/C3500 Pickup | |
| 1973-1974 | GMC | C35/C3500 Pickup | |
| 1979-1986 | GMC | C3500 | |
| 1973-1974,1976 | GMC | Jimmy | |
| 1976 | GMC | K15 | |
| 1968-1969 | GMC | K15/K1500 Pickup | |
| 1970-1972 | GMC | K15/K1500 Pickup | |
| 1973-1974 | GMC | K15/K1500 Pickup | |
| 1968-1969 | GMC | K15/K1500 Suburban | |
| 1970-1972 | GMC | K15/K1500 Suburban | |
| 1973-1974 | GMC | K15/K1500 Suburban | |
| 1980 | GMC | K1500 | |
| 1976-1978 | GMC | K25 | |
| 1976-1977 | GMC | K25 Suburban | |
| 1968-1969 | GMC | K25/K2500 Pickup | |
| 1970-1972 | GMC | K25/K2500 Pickup | |
| 1973-1974 | GMC | K25/K2500 Pickup | |
| 1968-1969 | GMC | K25/K2500 Suburban | |
| 1970-1972 | GMC | K25/K2500 Suburban | |
| 1973-1974 | GMC | K25/K2500 Suburban | |
| 1968-1969 | GMC | K35/K3500 Pickup | |
| 1970-1972 | GMC | K35/K3500 Pickup | |
| 1973-1974 | GMC | K35/K3500 Pickup | |
| 1979-1986 | GMC | K3500 | |
| 1987-1989 | GMC | R2500 | |
| 1987-1991 | GMC | R2500 Suburban | |
| 1987-1991 | GMC | R3500 | |
| 1987-1991 | GMC | V3500 |