Home » Jeep Engine & Fuel System » Replacement Engines » ATK Engines DA23 Replacement 4.0L I-6 Engine for 87-90 Jeep® Cherokee XJ, Comanche MJ & Wagoneer

ATK Engines DA23 Replacement 4.0L I-6 Engine for 87-90 Jeep® Cherokee XJ, Comanche MJ & Wagoneer

Catalog #: 51107.0015
ATK Engines Part #: DA23
Description
ATK engines with cylinder heads are engineered & fully remanufactured, using only the highest-quality parts and precision-machined tolerances. These Engines are backed by a 3-year - Unlimited mile warranty! All of ATK's manufacturing facilities are both QS-9000 and ISO 9001 certified, making them one of few engine remanufactures in the world to do so. Every engine is tested for compression, oil pressure, oil leaks, engine noise and general operating condition before shipment. Engines are shipped by truck freight. When you're ready to return your exchange core - the process is simple with our 360-Degree Core Guarantee. Simply stated, your engine core need only be the same type as the one supplied, complete with no visible damage and be able to turn over 360 degrees. Core pickup is easy. Place it in the crate and call the pickup number provided with the bill of lading. We pay the freight back. A Quadratec representative will contact you regarding the exact year of your existing engine, along with VIN number and additional shipping details. Please provide a daytime phone number and/or email when ordering.
Details

These motors include a full range of new parts including most of these components: balanced pistons, balanced rods, valves, valve guides & lifters, rings, wrist pins and bushings, main connecting rod and camshaft bushings, timing chain, oil pump, brass freeze plugs, as well as a premium gasket set and all oil seals.

All engine blocks are magna-fluxed, bored, precision honed and mains are line-honed. The camshaft bearings are line-bored for accurate center-to-center clearance; all blocks & cylinder heads precision surfaced; cylinder heads magna-fluxed & machined for three-angle valve seats. All crankshafts are stress-relieved, precision ground and micro polished. Camshafts are precision ground or replaced with new.

Installation Notes
Installation Difficulty:
Level 4Experts Only

1. Block Cast #535 / 665 / 341.
2. Fuel Injected, Gas, Overhead Valve.

Installation Time: 12-16 hours
  • Engine Size: 4.0L I-6
  • Engine Fuel: Gasoline
  • Jeep Cherokee (XJ)

  • 1990 Jeep Cherokee (XJ)
  • 1989 Jeep Cherokee (XJ)
  • 1988 Jeep Cherokee (XJ)
  • 1987 Jeep Cherokee (XJ)
  • Jeep Comanche (MJ)

  • 1990 Jeep Comanche (MJ)
  • 1989 Jeep Comanche (MJ)
  • 1988 Jeep Comanche (MJ)
  • 1987 Jeep Comanche (MJ)
  • Jeep Wagoneer (SJ)

  • 1990 Jeep Wagoneer (SJ)
  • 1989 Jeep Wagoneer (SJ)
  • 1988 Jeep Wagoneer (SJ)
  • 1987 Jeep Wagoneer (SJ)
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