Our aftermarket manifolds are some of the highest quality replacements on the market!

If your vehicle's exhaust is getting loud and the exhaust noise is coming from under the hood or engine then you may need to fix a cracked exhaust manifold. Replacing a broken manifold is easiest with a direct replacement manifold that will fit correctly and bolt up to you original engine and exhaust system. This manifold is a direct fitting replacement.

This cast iron manifold has been designed to eliminate the faults of the jeep design.


  • 2 bolt flange
  • Includes Gaskets and Hardware
  • Direct replacement
  • Replaces original manifolds that are cracked from thermal expansion and contraction
  • Corrosion resistant
  • Strengthened and redesigned in the vulnerable areas of failure

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

3.7 / 5.0
3 Reviews
5 Stars
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1 Stars
4.2 Jeep exhaust manifold
This is a great piece, nice quality, fit, and finish
February 1, 2017
1 year ago
Perfect fit
I really like the fact it has so many plugs and ports. It fit my Jeep perfectly and cured my warped manifold problem.
January 28, 2017
1 year ago
Exhaust Manifold
Exhaust manifold was warped. Mechanic had a hard time getting it to seal properly. Still have a leak. Got what I payed for cheap China made part for cheap price only myself to blame.
September 24, 2017
5 months ago
Response from 1A Auto
We are sorry to hear that the exhaust manifold you received was warped. If you would like we may issue a replacement. All we ask is that you call us at 1-888-844-3393.
September 25, 2017
Alex PStaff
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Vehicle Fit

  • 1981-1983 American Motors Concord Exhaust Manifold L6 4.2L
  • 1981-1988 American Motors Eagle Exhaust Manifold L6 4.2L
  • 1981-1983 American Motors Spirit Exhaust Manifold L6 4.2L
  • 1981-1986 Jeep CJ7 Exhaust Manifold L6 4.2L
  • 1981-1985 Jeep CJ8 Scrambler Exhaust Manifold L6 4.2L
  • 1981-1983 Jeep Cherokee Exhaust Manifold L6 4.2L
  • 1984-1986 Jeep Grand Wagoneer Exhaust Manifold L6 4.2L
  • 1981-1987 Jeep J Series Pickup (SJ) Exhaust Manifold L6 4.2L
  • 1981-1983 Jeep Wagoneer Exhaust Manifold L6 4.2L
  • 1987-1990 Jeep Wrangler Exhaust Manifold L6 4.2L
Part #: 1AEEM00149

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