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Product Discontinued
DYNOMAXPART NUMBER: 289-85003
Standard Header for 283-400ci Truck without AIR Injection, 1-Ton Crew Cab 2WD/4WD 1988-91
Currently Unavailable
This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
Chevrolet/GMC Truck Standard Series Headers
- Standard Header for 283-400ci Truck without AIR Injection,
- 1-Ton Crew Cab 2WD/4WD 1988-91
- 1/2, 3/4 Ton Truck 2WD/4WD 1966-87
- Blazer/Jimmy 2WD/4WD 1967-91
- Suburban 2WD/4WD 1966-91
Footnote:Crew Cab 1988-91 - Modification to stock exhaust required to retain catalytic converter system.
- Air conditioning equipped vehicles require bracket part 289-88304 for installation.
- Will not fit angle plug heads.
- For applications with oxygen sensor use reducer part 289-88313 for 2-1/2' 3-bolt flange or part 289-88314 for 3' 3-bolt flange.
1/2, 3/4 Ton Trucks 1966-72
- Air conditioning equipped vehicles require bracket part 289-88304 for installation.
- Chevy generator/alternator bracket part 289-88300 must be ordered for pre-1970 vehicles with exhaust-manifold-mounted alternator.
- Will not fit angle plug heads.
1/2, 3/4 Ton Trucks 1973-87
- Modification to stock exhaust required to retain catalytic converter system.
- Air conditioning equipped vehicles require bracket part 289-88304 for installation.
- Will not fit angle plug heads.
Blazer/Jimmy 1967-87
- Modification to stock exhaust required to retain catalytic converter system.
- Air conditioning equipped vehicles require bracket part 289-88304 for installation.
- Will not fit angle plug heads.
- For applications with oxygen sensor use reducer part 289-88313 for 2-1/2' 3-bolt flange or part 289-88314 for 3' 3-bolt flange.
Suburban 1973-91
- Modification to stock exhaust required to retain catalytic converter system.
- Air conditioning equipped vehicles require bracket part 289-88304 for installation.
- Will not fit angle plug heads.
- For applications with oxygen sensor use reducer part 289-88313 for 2-1/2' 3-bolt flange or part 289-88314 for 3' 3-bolt flange.
BrandDYNOMAX
Package Height9.5
Package Width19.0
Package Length36.6
Weight26.1 PG
Part CategoryPerformance Parts
Package Qty1
Package TypeEA
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