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Dynomax 89004 - Dynomax Header and Manifold Dual Kits

Dynomax 89004 - Dynomax Header and Manifold Dual Kits

JEGS Part Number: 289-89004

Header Dual Kit
  • 1973-82 Chevy Pickup 4WD 1/2-3/4-Ton (exc. Crew-Cab)
  • Small Block 350-400

    Dynomax 89004 - Dynomax Header and Manifold Dual Kits Details

    Header Dual Kits for Trucks

  • Designed To Perform w/DynoMax Headers Or Stock Man
  • Special Design For A Variety Of Mounting Options
  • Extra Long 16-gauge Tailpipe

    Application Revision:
  • GMC K1500 Pickup 1975-86

  • Complete 2.25" Dual Exhaust Systems
    A special reducer design allows for just the right angle of bending flexibility for a variety of mounting requirements. Features extra long 16-gauge tailpipes with side exits and a full 2.25" in diameter. Kits include all needed hardware and installation instructions (except mufflers).

    Note: Kits require 2 mufflers. Sold separately.
    Choose From:
    #289-17731 Super Turbo
    #289-17282 Ultra Flow
    or other mufflers with the same inlet/outlet configuration.

    The Dynomax Universal Header Dual Kit consist of aluminized steel tubing for long life that is mandrel bent for maximum flow. Kit features side exit tailpipes in front of rear wheels.

    JEGS Easy Kits are designed by JEGS Professionals to help you get all the performance parts you need.

    Dynomax 289-89004

    Inlet Size (in.)
    Outlet Size (in.)
    Exit Position
    Exhaust Type
    Exit Style
    Manufacturer's Part Number:
    Rated 5 out of 5 by from Great fitting kit I bought this Dynomax exhaust kit about a month ago.I have an 84 Chevy k10 pickup long bed.I installed this kit using stainless steel exhaust headers from pro comp and stainless steel mufflers from flowmaster. My only complaint with the kit is for long bed pickups they include two front tail pipe extensions that have a slight bend in them. That worked fine on the drivers side but on the passenger side the pipe needed to be straight. So I had to go to Pep Boys and buy a 3 foot piece of straight two and a quarter inch pipe and cut about 10" off. Other than that one thing this is a great exhaust kit.
    Date published: 2015-10-12
    Rated 2 out of 5 by from You get what you pay for I bought this kit KNOWING it was cheap and likely wouldn't fit perfect but I needed an exhaust quick and my budget was running thin finishing my truck. One side for pretty darn perfect the other side wasn't bent right where it goes over the crossmember and totally through off the exhaust the rest of the way back. My muffler is almost sideways and I ha to fabricate a hanger from 1/8" plate to make it work. Besides the bad bends, the joints are too sloppy and each one has an exhaust leak. I'm going to drop it all and re-work it and weld it in now. If I had to do over again is buy a higher end kit or get an exhaust shop to do it. BUT if your wallet was thin like mine it can be done but I tec omen welding the joints an tossing the clamps.
    Date published: 2014-11-02
    Rated 4 out of 5 by from Good quality Everything fit good except the left pipe that bolted to the header wasn't bent enough. I had to cut, bend, and re-weld it to make it contour correctly. All in all a good deal vs muffler shop charges
    Date published: 2014-12-26
    • 2015-11-28T08:38CST
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