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Product Summary

Long Tube Header Tube Type, D-port Exhaust Port Shape

    Rebates Available

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    Key Specs

    MFG. Part #4901HKR
    Header Tube TypeLong Tube
    Exhaust Port ShapeD-port
    Flange StyleStandard
    Primary Tube Diameter1-5/8"
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    Need To Know

    Quick and Easy Returns

    Return Policy

    Hooker Headers 4901HKR Details

    Hooker Competition headers offer the best value in the high performance header market. Designed for the value-conscious buyer who is running either a "stock" or "mildly-modified" engine, 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.

    • Tuned-length primary tubes for street performance
    • Mandrel-bent tubing for smooth exhaust flow
    • Light weight & 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 easy, trouble-free fit
    • All necessary hardware included for a complete installation

    Application

    1964 Pontiac LeMans
    1965 Pontiac LeMans
    1966 Pontiac LeMans
    1967 Pontiac LeMans
    1968 Pontiac LeMans
    1969 Pontiac LeMans
    1970 Pontiac Firebird
    1970 Pontiac LeMans
    1971 Pontiac Firebird
    1971 Pontiac LeMans
    1972 Pontiac Firebird
    1972 Pontiac LeMans
    1973 Pontiac Firebird
    1973 Pontiac Grand Am
    1973 Pontiac LeMans
    1974 Pontiac Firebird
    1974 Pontiac Grand Am
    1974 Pontiac LeMans
    1975 Pontiac Firebird
    1975 Pontiac Grand Am
    1975 Pontiac LeMans
    1976 Pontiac Firebird
    1977 Pontiac Firebird
    1978 Pontiac Firebird
    1979 Pontiac Firebird

    Charts

    Rebates

    Holley IRS Sale 2026

    Save 10% instantly on select products across the Holley family of performance brands during the annual Holley I.R.S.Tax Sale. Instant rebate period has been extended and now runs from February 17, 2026 through April 19, 2026.

    CARB Warning

    For race/ off road use only

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    Hooker Headers 4901HKR Specifications

    KEY SPECS
    MFG. Part #4901HKR
    BrandHooker Headers
    Header Tube TypeLong Tube
    Exhaust Port ShapeD-port
    Flange StyleStandard
    Primary Tube Diameter1-5/8"
    Material TypeSteel
    ColorBlack
    Weld-UpNo
    Collector Diameter3 Inch
    FinishPainted
    Hardware IncludedYes
    Gasket(s) IncludedYes
    Collector Reducers IncludedNo
    GENERAL
    Sold in QuantityPair
    GTIN Code700414009599
    NotesWill 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.
    Collector Length8"
    Flange Thickness0.3125"
    Emission Code3
    Crossover Pipe IncludedNo
    Primary Tube Gauge16-gauge

    Fitment

    • 389 Pontiac V8

    • 389 Pontiac V8

    • 389 Pontiac V8

    • 389 Pontiac V8

    • 389 Pontiac V8

    • 389 Pontiac V8

    • 389 Pontiac V8

    • 389 Pontiac V8

    Customer Impersonation Script