Overview
The Crown Automotive 3237427K is an exhaust manifold kit sold as a direct-fit replacement for several early Jeep models. It fits the CJ5, CJ7, J10, Scrambler and 1987–1990 Wrangler YJ.
The part number and direct-fit status are the only details provided for this kit. Compare the kit with your original manifold before ordering to confirm material, port layout and included gaskets.
Key features
- Exhaust manifold kit with a direct-fit design
- Fits CJ, J10 and Scrambler models from 1981 to 1986
- Fits 1987–1990 Wrangler YJ models
- Part number 3237427K for identification
Exhaust manifold service tips
Exhaust manifolds run very hot, so the most useful preparation is letting the engine cool before any work begins. Heat and corrosion often bond the fasteners to the head, which can make removal harder on older Jeep engines. Penetrating oil applied well ahead of the job can loosen bolts without damage.
Inspect the old manifold for cracks, warping and flange damage before reusing any parts. Clean the head surface thoroughly before fitting the new kit, and confirm that every gasket and hardware position matches the original layout. Older exhaust systems often have worn heat shields and rusted clamps that are worth replacing at the same time.
- Let the engine cool completely
- Apply penetrating oil before loosening fasteners
- Inspect the head surface for flatness
- Replace rusted clamps while the system is open
Specifications
| Brand | Crown Automotive |
|---|---|
| Part number | 3237427K |
| Part type | Exhaust manifold kit |
| Fitment type | Direct fit |
Vehicle fitment
It fits the 1981–1983 Jeep CJ5, 1981–1986 Jeep CJ7, 1981–1986 Jeep J10, 1981–1985 Jeep Scrambler and 1987–1990 Jeep Wrangler (YJ). Trims include Base, Laredo, Limited, Renegade and Sahara, depending on model.
Model years outside these ranges and Wrangler TJ models are not on the list. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Exhaust manifolds bolt to the cylinder head, so let the engine cool fully before removing the old manifold.
What’s included
Check the kit contents against your installation before starting, including gaskets and hardware.
