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Hooker Header Back Exhaust System 16522HKR

Hooker Header Back Exhaust System 16522HKR
Hooker Header Back Exhaust System 16522HKR
$510.99 ea
NEWARRIVING SOONEstimated Ship Date 11/18/2025 (If Ordered Today)8 Available from HOLLEY PERFORMANCE PRODUCTS as of 10/31/2025
Model: 4008636
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 2
STORE PICKUP
[More Info]
Designed for Hooker Competition 2452HKR header back applications. This system uses 2.25-inch 16-gauge aluminized tubing to reduce back-pressure and improve engine efficiency. The system is mandrel bent to eliminate any crush sections in the tubing to help maximize the exhaust flow for better performance.
Features:
  • Mandrel Bent Tubing Eliminates Restrictions in Bends and Improves Exhaust Flow
  • Reduces Backpressure
  • Improves Engine Efficiency
  • Hardware Included
  • Instructions Included
  • Fits Long Wheelbase Only
Designed to work with header number 2452HKR. Will not fit with stock manifolds that exit straight down.
Installation Notes:
Designed to work with header number 2452HKR. Will not fit with stock manifolds that exit straight down.

Downloads:

Download Name File Size
16522-621hkrrev1.pdf292.74KB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Years Engine Fitment Notes
Chevrolet Blazer 1969 5.0L / 307 / V8
5.7L / 350 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet Blazer 1970 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet Blazer 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet Blazer 1972 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Pickup 1963 4.6L / 283 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Pickup 1964 4.6L / 283 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Pickup 1965 4.6L / 283 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Pickup 1966 5.3L / 327 / V8
4.6L / 283 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Pickup 1967 5.3L / 327 / V8
4.6L / 283 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Pickup 1968 5.0L / 307 / V8
5.4L / 327 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Pickup 1969 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Pickup 1970 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Pickup 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Pickup 1972 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Suburban 1969 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Suburban 1970 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Suburban 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C10 Suburban 1972 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Pickup 1963 4.6L / 283 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Pickup 1964 4.6L / 283 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Pickup 1965 4.6L / 283 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Pickup 1966 5.3L / 327 / V8
4.6L / 283 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Pickup 1967 5.3L / 327 / V8
4.6L / 283 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Pickup 1968 5.4L / 327 / V8
5.0L / 307 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Pickup 1969 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Pickup 1970 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Pickup 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Pickup 1972 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Suburban 1969 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Suburban 1970 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Suburban 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C20 Suburban 1972 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C30 Pickup 1963 4.6L / 283 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C30 Pickup 1964 4.6L / 283 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C30 Pickup 1965 4.6L / 283 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C30 Pickup 1966 5.3L / 327 / V8
4.6L / 283 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C30 Pickup 1967 5.3L / 327 / V8
4.6L / 283 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C30 Pickup 1968 5.4L / 327 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C30 Pickup 1969 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C30 Pickup 1970 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C30 Pickup 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
Chevrolet C30 Pickup 1972 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C15/C1500 Pickup 1967 5.3L / 327 / V8
4.6L / 283 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C15/C1500 Pickup 1968 5.4L / 327 / V8
5.0L / 307 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C15/C1500 Pickup 1969 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C15/C1500 Pickup 1970 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C15/C1500 Pickup 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C15/C1500 Pickup 1972 5.7L / 350 / V8
5.0L / 307 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C15/C1500 Suburban 1969 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C15/C1500 Suburban 1970 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C15/C1500 Suburban 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C15/C1500 Suburban 1972 5.7L / 350 / V8
5.0L / 307 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C25/C2500 Pickup 1967 4.6L / 283 / V8
5.3L / 327 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C25/C2500 Pickup 1968 5.4L / 327 / V8
5.0L / 307 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C25/C2500 Pickup 1969 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C25/C2500 Pickup 1970 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C25/C2500 Pickup 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C25/C2500 Pickup 1972 5.7L / 350 / V8
5.0L / 307 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C25/C2500 Suburban 1969 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C25/C2500 Suburban 1970 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C25/C2500 Suburban 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C25/C2500 Suburban 1972 5.7L / 350 / V8
5.0L / 307 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C35/C3500 Pickup 1967 4.6L / 283 / V8
5.3L / 327 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C35/C3500 Pickup 1968 5.4L / 327 / V8
5.0L / 307 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C35/C3500 Pickup 1969 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C35/C3500 Pickup 1970 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C35/C3500 Pickup 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC C35/C3500 Pickup 1972 5.7L / 350 / V8
5.0L / 307 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC Jimmy 1970 5.0L / 307 / V8
5.7L / 350 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC Jimmy 1971 5.7L / 350 / V8 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;
GMC Jimmy 1972 5.0L / 307 / V8
5.7L / 350 / V8		 Dual Competition Header Back Exhaust System Kit; Will Not Fit Stock Manifolds That Exit Straight Down;

Specifications:

Emission Code 4
Exhaust Series Hooker
Material Aluminized Steel
Muffler Type None
Part Type Exhaust System Kit
Product Type Exhaust System
Proposition 65 www.P65Warnings.ca.gov
Sound Level Pipe Only
System Type Header-back
Tips None
Tubing Diameter (in) 2.25
Type of Exhaust Header-Back

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