Doug's Headers Tri Y Header 68-91 GM Truck 396-502 BBC 1 3/4-2" Primary 2 1/2" Collector Silver Ceramic Coated
- Mfg Part #
- D303Y
- SKU
- DOUD303Y
- Brand
-
Doug's Headers
Fits 1968 to 1991 Chevrolet Blazer, C10, C10 Pickup and 27 more models, and 1 more make. See every vehicle
- 3/8" thick machined flanges to prevent warping
- CNC mandrel bent tubes ensure accurate fit and better flow
- Heavy 16-guage tubing for longer life
- Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating
$1,515.99 CAD
Ships Oct 22
Free shipping in Canada, ships Oct 22
Availability:
This item is available at the manufacturer.
In stock
At our Burlington, Ontario store: same-day pickup is typically available, or it ships on the date shown.
External warehouse stock
At a partner warehouse: we order it right away and it ships on the date shown.
Manufacturer stock
Available at the manufacturer: we order it for you right away and it ships on the date shown.
Backorder
Backordered at the supplier, availability unknown: we order it right away and allow about 2 weeks before your order ships. Contact us to check.
Universal Fitment
Does this fit your vehicle?
Description
Doug's is the pioneering force behind the popular TRI-Y design for cars and trucks. The unique, shortend, paired primary tubes increase mid-range torque without sacrificing top end power. TRI-Y's are a great choice for daily drivers and heavy duty trucks looking to increase power from idle up to 4500 RPM while maintaining maximum fuel efficiency.
Fits these vehicles
| Year | Make | Model | Body Style | Engine |
|---|---|---|---|---|
| 1973 - 1974 | Chevrolet | Blazer | - | 7.4L 454 V8 |
| 1975 - 1980 | Chevrolet | C10 | - | 7.4L 454 V8 |
| 1968 - 1969 | Chevrolet | C10 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | Chevrolet | C10 Pickup | - | 6.6L 402 V8 |
| 1973 - 1974 | Chevrolet | C10 Pickup | - | 7.4L 454 V8 |
| 1968 - 1969 | Chevrolet | C10 Suburban | - | 6.5L 396 V8 |
| 1970 - 1972 | Chevrolet | C10 Suburban | - | 6.6L 402 V8 |
| 1973 - 1980 | Chevrolet | C10 Suburban | - | 7.4L 454 V8 |
| 1975 - 1986 | Chevrolet | C20 | - | 7.4L 454 V8 |
| 1968 - 1969 | Chevrolet | C20 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | Chevrolet | C20 Pickup | - | 6.6L 402 V8 |
| 1973 - 1974 | Chevrolet | C20 Pickup | - | 7.4L 454 V8 |
| 1968 - 1969 | Chevrolet | C20 Suburban | - | 6.5L 396 V8 |
| 1970 - 1972 | Chevrolet | C20 Suburban | - | 6.6L 402 V8 |
| 1973 - 1986 | Chevrolet | C20 Suburban | - | 7.4L 454 V8 |
| 1975 - 1986 | Chevrolet | C30 | - | 7.4L 454 V8 |
| 1968 - 1969 | Chevrolet | C30 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | Chevrolet | C30 Pickup | - | 6.6L 402 V8 |
| 1973 - 1974 | Chevrolet | C30 Pickup | - | 7.4L 454 V8 |
| 1988 - 1991 | Chevrolet | C3500 | - | 7.4L 454 V8 |
| 1976 | Chevrolet | K10 | - | 7.4L 454 V8 |
| 1980 | Chevrolet | K10 | - | 7.4L 454 V8 |
| 1968 - 1969 | Chevrolet | K10 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | Chevrolet | K10 Pickup | - | 6.6L 402 V8 |
| 1973 - 1974 | Chevrolet | K10 Pickup | - | 7.4L 454 V8 |
| 1968 - 1969 | Chevrolet | K10 Suburban | - | 6.5L 396 V8 |
| 1970 - 1972 | Chevrolet | K10 Suburban | - | 6.6L 402 V8 |
| 1973 - 1974 | Chevrolet | K10 Suburban | - | 7.4L 454 V8 |
| 1976 - 1978 | Chevrolet | K20 | - | 7.4L 454 V8 |
| 1968 - 1969 | Chevrolet | K20 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | Chevrolet | K20 Pickup | - | 6.6L 402 V8 |
| 1973 - 1974 | Chevrolet | K20 Pickup | - | 7.4L 454 V8 |
| 1968 - 1969 | Chevrolet | K20 Suburban | - | 6.5L 396 V8 |
| 1970 - 1972 | Chevrolet | K20 Suburban | - | 6.6L 402 V8 |
| 1973 - 1974 | Chevrolet | K20 Suburban | - | 7.4L 454 V8 |
| 1977 | Chevrolet | K30 | - | 7.4L 454 V8 |
| 1980 - 1986 | Chevrolet | K30 | - | 7.4L 454 V8 |
| 1968 - 1969 | Chevrolet | K30 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | Chevrolet | K30 Pickup | - | 6.6L 402 V8 |
| 1973 - 1974 | Chevrolet | K30 Pickup | - | 7.4L 454 V8 |
| 1988 - 1991 | Chevrolet | K3500 | Standard Cab Pickup | 7.4L 454 V8 |
| 1976 - 1978 | Chevrolet | K5 Blazer | - | 7.4L 454 V8 |
| 1987 - 1988 | Chevrolet | R20 | - | 7.4L 454 V8 |
| 1987 - 1988 | Chevrolet | R20 Suburban | - | 7.4L 454 V8 |
| 1989 | Chevrolet | R2500 | - | 7.4L 454 V8 |
| 1989 - 1991 | Chevrolet | R2500 Suburban | - | 7.4L 454 V8 |
| 1987 - 1988 | Chevrolet | R30 | - | 7.4L 454 V8 |
| 1989 - 1991 | Chevrolet | R3500 | Crew Cab Pickup | 7.4L 454 V8 |
| 1989 | Chevrolet | R3500 | Standard Cab Pickup | 7.4L 454 V8 |
| 1987 - 1988 | Chevrolet | V20 Suburban | - | 7.4L 454 V8 |
| 1990 | Chevrolet | V2500 Suburban | - | 7.4L 454 V8 |
| 1987 - 1988 | Chevrolet | V30 | Crew Cab Pickup | 7.4L 454 V8 |
| 1987 - 1988 | Chevrolet | V30 | Standard Cab Pickup | 7.4L 454 V8 |
| 1989 - 1991 | Chevrolet | V3500 | Crew Cab Pickup | 7.4L 454 V8 |
| 1989 | Chevrolet | V3500 | Standard Cab Pickup | 7.4L 454 V8 |
| 1975 - 1978 | GMC | C15 | - | 7.4L 454 V8 |
| 1979 - 1980 | GMC | C1500 | - | 7.4L 454 V8 |
| 1979 - 1980 | GMC | C1500 Suburban | - | 7.4L 454 V8 |
| 1968 - 1969 | GMC | C15/C1500 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | GMC | C15/C1500 Pickup | - | 6.6L 402 V8 |
| 1973 - 1974 | GMC | C15/C1500 Pickup | - | 7.4L 454 V8 |
| 1968 - 1969 | GMC | C15/C1500 Suburban | - | 6.5L 396 V8 |
| 1970 - 1972 | GMC | C15/C1500 Suburban | - | 6.6L 402 V8 |
| 1973 - 1974 | GMC | C15/C1500 Suburban | - | 7.4L 454 V8 |
| 1975 - 1978 | GMC | C15 Suburban | - | 7.4L 454 V8 |
| 1975 - 1978 | GMC | C25 | - | 7.4L 454 V8 |
| 1979 - 1986 | GMC | C2500 | - | 7.4L 454 V8 |
| 1979 - 1986 | GMC | C2500 Suburban | - | 7.4L 454 V8 |
| 1968 - 1969 | GMC | C25/C2500 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | GMC | C25/C2500 Pickup | - | 6.6L 402 V8 |
| 1973 - 1974 | GMC | C25/C2500 Pickup | - | 7.4L 454 V8 |
| 1968 - 1969 | GMC | C25/C2500 Suburban | - | 6.5L 396 V8 |
| 1970 - 1972 | GMC | C25/C2500 Suburban | - | 6.6L 402 V8 |
| 1973 - 1974 | GMC | C25/C2500 Suburban | - | 7.4L 454 V8 |
| 1975 - 1978 | GMC | C25 Suburban | - | 7.4L 454 V8 |
| 1975 - 1978 | GMC | C35 | - | 7.4L 454 V8 |
| 1979 - 1986 | GMC | C3500 | - | 7.4L 454 V8 |
| 1979 - 1986 | GMC | C3500 | Cab & Chassis | 7.4L 454 V8 |
| 1988 - 1991 | GMC | C3500 | Cab & Chassis | 7.4L 454 V8 |
| 1979 - 1986 | GMC | C3500 | Crew Cab Pickup | 7.4L 454 V8 |
| 1979 - 1986 | GMC | C3500 | Standard Cab Pickup | 7.4L 454 V8 |
| 1968 - 1969 | GMC | C35/C3500 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | GMC | C35/C3500 Pickup | - | 6.6L 402 V8 |
| 1973 - 1974 | GMC | C35/C3500 Pickup | - | 7.4L 454 V8 |
| 1973 - 1974 | GMC | Jimmy | - | 7.4L 454 V8 |
| 1976 | GMC | Jimmy | - | 7.4L 454 V8 |
| 1976 | GMC | K15 | - | 7.4L 454 V8 |
| 1980 | GMC | K1500 | - | 7.4L 454 V8 |
| 1968 - 1969 | GMC | K15/K1500 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | GMC | K15/K1500 Pickup | - | 6.6L 402 V8 |
| 1973 - 1974 | GMC | K15/K1500 Pickup | - | 7.4L 454 V8 |
| 1968 - 1969 | GMC | K15/K1500 Suburban | - | 6.5L 396 V8 |
| 1970 - 1972 | GMC | K15/K1500 Suburban | - | 6.6L 402 V8 |
| 1973 - 1974 | GMC | K15/K1500 Suburban | - | 7.4L 454 V8 |
| 1976 - 1978 | GMC | K25 | - | 7.4L 454 V8 |
| 1968 - 1969 | GMC | K25/K2500 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | GMC | K25/K2500 Pickup | - | 6.6L 402 V8 |
| 1973 - 1974 | GMC | K25/K2500 Pickup | - | 7.4L 454 V8 |
| 1968 - 1969 | GMC | K25/K2500 Suburban | - | 6.5L 396 V8 |
| 1970 - 1972 | GMC | K25/K2500 Suburban | - | 6.6L 402 V8 |
| 1973 - 1974 | GMC | K25/K2500 Suburban | - | 7.4L 454 V8 |
| 1976 - 1977 | GMC | K25 Suburban | - | 7.4L 454 V8 |
| 1979 - 1986 | GMC | K3500 | Crew Cab Pickup | 7.4L 454 V8 |
| 1979 - 1986 | GMC | K3500 | Standard Cab Pickup | 7.4L 454 V8 |
| 1968 - 1969 | GMC | K35/K3500 Pickup | - | 6.5L 396 V8 |
| 1970 - 1972 | GMC | K35/K3500 Pickup | - | 6.6L 402 V8 |
| 1987 - 1989 | GMC | R2500 | Crew Cab Pickup | 7.4L 454 V8 |
| 1987 - 1991 | GMC | R2500 Suburban | - | 7.4L 454 V8 |
| 1987 - 1991 | GMC | R3500 | Crew Cab Pickup | 7.4L 454 V8 |
| 1987 - 1989 | GMC | R3500 | Standard Cab Pickup | 7.4L 454 V8 |
| 1987 - 1991 | GMC | V3500 | Crew Cab Pickup | 7.4L 454 V8 |