Hooker 6901HKR exhaust header for the 1964-1965 Ford Mustang V8 4.3L, the 1964-1968 Mustang V8 4.7L, the 1968-1973 Mustang V8 5.0L, the 1969-1973 Mustang V8 5.8L and other vehicles routes the exhaust from each port through a long primary tube into a collector. This Hooker exhaust header is a long-tube design, sold as a pair for both sides of the engine.
- Hooker Competition line, in a full-length design
- Tuned-length primary tubes for street performance
- Mandrel-bent tubing for smooth exhaust flow and a consistent tube diameter at the bends
- Lightweight 16 gauge mild steel tubing
- Long transition collector, 3 in. in diameter and 8 in. long, to decrease back pressure
- 5/16 in. machined flanges with welded O-ring seals for a tight seal at each port
Quick facts
- Part: Hooker 6901HKR exhaust header
- Fits: 1964-1965 Ford Mustang V8 4.3L, 1964-1968 Mustang V8 4.7L, 1968-1973 Mustang V8 5.0L, 1969-1973 Mustang V8 5.8L and other vehicles
- Material: Mild steel
- Condition: New
A cracked tube or flange, a ticking exhaust noise or soot around a port can mean an exhaust header is leaking. These signs alone do not prove the header is the problem, since a worn gasket at the port can sound the same.
Fits
This long-tube exhaust header also fits the 1971-1977 Ford Maverick V8 5.0L, the 1967-1968 Mercury Cougar V8 4.7L, the 1968-1969 Cougar V8 5.0L and the 1969-1973 Cougar V8 5.8L. On the 5.8L, Hooker makes it for the 351 Windsor engine only; a 351 Cleveland takes a different header. If your car is not named here, look up its year and engine in the "Vehicles it fits" section. This listing is a pair of exhaust headers, one for each side of the engine, and the 1968-1973 Ford Mustang V8 5.0L takes one pair.
Specifications
Fit and size
- Quantity per application: 1 pair
- Engine make and size: Ford 221-351W
- Primary tube: 1.625 in. OD x 28 in.
- Collector: 3.000 in. diameter, 8 in. long
- Head style: long-tube
- Tube direction: down swept
- Port shape: same as port, can be matched
Build and materials
- Tube material: mild steel
- Tubing gauge: 16
- Finish: black paint
- Flanges: 5/16 in. machined, with welded O-ring seals
- Condition: New
- Country of origin: China
In the box
Two exhaust headers, left and right, with the hardware needed for installation.
Installation notes
- Hooker notes it does not fit a 1971-1973 Mustang V8 5.0L or V8 5.8L, or a 1971-1973 Cougar V8 5.8L, with a manual transmission
- It does not fit a Dart Windsor cylinder head
Frequently Asked Questions
Are these headers right for the 1968-1973 Ford Mustang V8 5.0L?
Yes. Hooker 6901HKR is listed for the 1968-1973 Ford Mustang V8 5.0L. The "Vehicles it fits" section shows the other years and engines it fits.
Does the Hooker 6901HKR exhaust header come with hardware?
Yes. The Hooker 6901HKR comes with the hardware needed for installation, and the listing is a pair of headers, left and right.
What size are the primary tubes and collector on this exhaust header?
The primary tubes are 1.625 in. OD by 28 in. long. The collector is 3 in. in diameter and 8 in. long.
How can I check an exhaust header for cracks or leaks?
With the engine off and cool, look for cracks in the tubes or flange and soot streaks around the ports. A ticking noise from the engine bay can also be a sign of a leak.
What does the long transition collector do on this exhaust header?
The long transition collector is designed to reduce back pressure and increase exhaust flow. The tubing is mandrel-bent to keep the tube diameter consistent at the bends.
