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Instruction Sheets for Part Number HOK-4901HKR
Charts & Guides for Part Number HOK-4901HKR
Headers, Competition, Long Tube, Steel, Painted, Pontiac, 326-455, Pair
See More Specifications
Estimated Ship Date: Oct 23, 2026 Would you rather pick it up?
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Overview
Brand:
Manufacturer's Part Number:
4901HKR
Part Type:
Product Line:
Summit Racing Part Number:
HOK-4901HKR
UPC:
700414009599
Header Style:
Long tube one-piece
Header Material:
Steel
Primary Tube Outside Diameter (in.):
1 5/8 in.
Header Color:
Temporary non-high temperature paint
Flange Style:
Standard
Weld-Up:
No
Cylinder Head Port Shape:
D-port
Collector Attachment:
3-bolt flange
Collector Diameter (in.):
3.00
Collector Reducers Included:
No
Tuned:
No
Primary Tube Gauge:
16-gauge
Flange Thickness (in.):
0.31 in.
Bolts/Studs Included:
Yes
Gaskets Included:
Yes
Crossover Pipe Included:
No
Catalytic Converter(s) Included:
No
Motor Mounts Included:
No
Transmission Mount Included:
No
Quantity:
Sold as a pair.
Notes:
Will not fit convertible. The paint applied to these headers is a temporary coating only and is designed to burn off during use. High temperature paint or other high temperature coatings are recommended.
Hooker Competition Headers
Hooker Competition headers are designed for stock or mildly modified engines for the value-conscious buyer. Made from durable 16-gauge steel, Competition headers feature 5/16 in. thick flanges that are heavy enough to maintain header integrity, yet pliable enough to seal each exhaust port. Unless otherwise noted, these headers are designed to fit the vehicle as it came from the manufacturer. This includes components like cylinder heads, chassis, steering, motor mounts, body mounts and bushings, etc. If your vehicle is using aftermarket components, parts from other applications, or custom altered parts, then it is the installer's responsibility to verify fitment.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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