Hooker Competition Long Tube Headers – Stainless HOK-24522HKR
Fits 1969-1974 Blazer/Suburban/Jimmy/Carryall/Yukon/1-Ton Crew Cab (2WD), 1963-1974 1/2, 3/4 & 1 Ton Truck (2WD): 265-400 Tube Size 1.625″ x 27″ O.D., Collector Size 2.5″ O.D., Collector Length 8″, Port Shape: Same As Port
Features:
- Works with factory power steering, power brakes and air conditioning
- Tuned-length primary tubes for maximum exhaust scavenging and velocity
- Mandrel-bent tubing for smooth exhaust flow
- Sturdy 16-gauge tubing
- Long transition collector for decreased back pressure
- 5/16” machined flanges for a perfect seal
- Industry’s best welds for durability
- Designed for maximum performance
- All necessary hardware included for a complete installation
Hooker Competition headers offer the best value in the high performance header market. Designed for the value-conscious buyer, Hooker Competition headers offer premium features at a very competitive price. Made of durable 16 gauge mild steel tubing, the Hooker Competition header design utilizes a long transition collector to reduce back pressure and increase exhaust flow. A perfect sealing surface is assured with the 5/16″ machined flanges, with welded O-ring seals. Experience has proven that this flange size is ideal to maintain header integrity and be pliable enough to seal each exhaust port. Tubing is mandrel-bent to maintain metal strength and provide consistent tube diameter at radii to maximize performance. Hooker Competition headers have a standard finish that features a heat-cured, high-heat-resistant paint. Optionally, the famous Hooker Ceramic Thermal Barrier Coating is available.
Attributes:
| Engine | Chevrolet Small Block Gen I |
| Tube Material | 304 Stainless Steel |
| Sub Category | Exhaust Manifolds |
| Product Type | Headers |
| Primary Tube Dia. | 1-5/8 inch |
| part type | Exhaust Header |
| Header Style | Long Tube |
| Header Finish | Natural |
| Emission Code | 4 |
| Collector Diameter | 2.50 inch |
| Category | Exhaust |
| CARB (California) Compliant | No |
| Brand | Hooker |
| Bolt size | 3/8-16 x 3/4 |
Vehicle Applications:
| Make | Model | Years |
| Chevrolet | Blazer | 1969 to 1974 |
| Chevrolet | C10 Pickup | 1963 to 1974 |
| Chevrolet | C10 Suburban | 1969 to 1974 |
| Chevrolet | C20 Pickup | 1963 to 1974 |
| Chevrolet | C20 Suburban | 1969 to 1974 |
| Chevrolet | C30 Pickup | 1963 to 1974 |
| GMC | C15/C1500 Pickup | 1967 to 1974 |
| GMC | C15/C1500 Suburban | 1969 to 1974 |
| GMC | C25/C2500 Pickup | 1967 to 1974 |
| GMC | C25/C2500 Suburban | 1969 to 1974 |
| GMC | C35/C3500 Pickup | 1967 to 1974 |
| GMC | Jimmy | 1970 to 1974 |



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