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Hooker Dual Competition Header Back Exhaust System Kit 16561HKR

Hooker Dual Competition Header Back Exhaust System Kit 16561HKR
Hooker Dual Competition Header Back Exhaust System Kit 16561HKRHooker Dual Competition Header Back Exhaust System Kit 16561HKRHooker Dual Competition Header Back Exhaust System Kit 16561HKRHooker Dual Competition Header Back Exhaust System Kit 16561HKRHooker Dual Competition Header Back Exhaust System Kit 16561HKRHooker Dual Competition Header Back Exhaust System Kit 16561HKRHooker Dual Competition Header Back Exhaust System Kit 16561HKRHooker Dual Competition Header Back Exhaust System Kit 16561HKRHooker Dual Competition Header Back Exhaust System Kit 16561HKRHooker Dual Competition Header Back Exhaust System Kit 16561HKRHooker Dual Competition Header Back Exhaust System Kit 16561HKR
$591.99 ea
NEWARRIVING SOONEstimated Ship Date 01/07/2026 (If Ordered Today)63 Available from HOLLEY PERFORMANCE PRODUCTS as of 12/23/2025
Model: 4008644
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 to fit Hooker Competition header, Manifold or catalytic converter back applications. Cat–back kits install behind the converter and all other applicable emission control devices.
Features:
  • Reducer Flex-Tubes
  • Reduces Backpressure
  • Improves Engine Efficiency
  • Hardware And Instructions Included
Holley Performance Emission Code 4: This part is legal for sale or use on Racing Use Only Vehicles. The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Downloads:

Download Name File Size
Warranty_Policy.pdf14.65KB
16561HKR.pdf377.87KB
16561hkr.pdf440.44KB

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
Ford Bronco 1978 6.6L / 400 / V8
5.8L / 351 / V8		 2.25 in. Tubing; Incl. Head Pipes/Extension Pipes/Tailpipes/Hardware; Front Differential Pinion Is Above Centerline Of Axle;Intended For Race Use Only
Front Differential Pinion Is Above Centerline Of Axle~Runs Down Right Hand Side Between Frame & Drive Shaft
Ford Bronco 1979 6.6L / 400 / V8
5.8L / 351 / V8		 2.25 in. Tubing; Incl. Head Pipes/Extension Pipes/Tailpipes/Hardware; Front Differential Pinion Is Above Centerline Of Axle;Intended For Race Use Only
Front Differential Pinion Is Above Centerline Of Axle~Runs Down Right Hand Side Between Frame & Drive Shaft
Ford F-150 1977 6.6L / 400 / V8
5.8L / 351 / V8		 2.25 in. Tubing; Incl. Head Pipes/Extension Pipes/Tailpipes/Hardware; Front Differential Pinion Is Above Centerline Of Axle;Intended For Race Use Only
Front Differential Pinion Is Above Centerline Of Axle~Runs Down Right Hand Side Between Frame & Drive Shaft
Ford F-150 1978 6.6L / 400 / V8
5.8L / 351 / V8		 2.25 in. Tubing; Incl. Head Pipes/Extension Pipes/Tailpipes/Hardware; Front Differential Pinion Is Above Centerline Of Axle;Intended For Race Use Only
Front Differential Pinion Is Above Centerline Of Axle~Runs Down Right Hand Side Between Frame & Drive Shaft
Ford F-150 1979 6.6L / 400 / V8
5.8L / 351 / V8		 2.25 in. Tubing; Incl. Head Pipes/Extension Pipes/Tailpipes/Hardware; Front Differential Pinion Is Above Centerline Of Axle;Intended For Race Use Only
Front Differential Pinion Is Above Centerline Of Axle~Runs Down Right Hand Side Between Frame & Drive Shaft
Ford F-250 1977 6.6L / 400 / V8
5.8L / 351 / V8		 2.25 in. Tubing; Incl. Head Pipes/Extension Pipes/Tailpipes/Hardware; Front Differential Pinion Is Above Centerline Of Axle;Intended For Race Use Only
Front Differential Pinion Is Above Centerline Of Axle~Runs Down Right Hand Side Between Frame & Drive Shaft
Ford F-250 1978 6.6L / 400 / V8
5.8L / 351 / V8		 2.25 in. Tubing; Incl. Head Pipes/Extension Pipes/Tailpipes/Hardware; Front Differential Pinion Is Above Centerline Of Axle;Intended For Race Use Only
Front Differential Pinion Is Above Centerline Of Axle~Runs Down Right Hand Side Between Frame & Drive Shaft
Ford F-250 1979 6.6L / 400 / V8
5.8L / 351 / V8		 2.25 in. Tubing; Incl. Head Pipes/Extension Pipes/Tailpipes/Hardware; Front Differential Pinion Is Above Centerline Of Axle;Intended For Race Use Only
Front Differential Pinion Is Above Centerline Of Axle~Runs Down Right Hand Side Between Frame & Drive Shaft
Ford F-350 1977 6.6L / 400 / V8
5.8L / 351 / V8		 2.25 in. Tubing; Incl. Head Pipes/Extension Pipes/Tailpipes/Hardware; Front Differential Pinion Is Above Centerline Of Axle;Intended For Race Use Only
Ford F-350 1978 6.6L / 400 / V8
5.8L / 351 / V8		 2.25 in. Tubing; Incl. Head Pipes/Extension Pipes/Tailpipes/Hardware; Front Differential Pinion Is Above Centerline Of Axle;Intended For Race Use Only
Ford F-350 1979 6.6L / 400 / V8
5.8L / 351 / V8		 2.25 in. Tubing; Incl. Head Pipes/Extension Pipes/Tailpipes/Hardware; Front Differential Pinion Is Above Centerline Of Axle;Intended For Race Use Only
Front Differential Pinion Is Above Centerline Of Axle~Runs Down Right Hand Side Between Frame & Drive Shaft

Specifications:

Emission Code 4
Exhaust Series Hooker
Exhaust Type Header-Back
Exit Position Dual Split Side
Exit Style Straight
Inlet Inside Diameter 3.000 in.
Material 409 Stainless Steel
Muffler Type None
Outlet Outside Diameter 2.250 in.
Part Type Exhaust System Kit
Sound Level Pipe Only
System Type Header Back
Tail Pipe Diameter 2.250 in.
Tip Diameter 4.000 in.
Tip Material None
Tip Quantity 0
Tips None
Tube Diameter 2.250 in.
Tubing Diameter 2.250 in.
Tubing Diameter (in) 2.25
Type of Exhaust Header-Back
WARNING CA Proposition 65 WARNING: Cancer and Reproductive Harm

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