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ATK Engines Replacement 4.0L I-6 Engine for 92-95 Jeep Wrangler YJ, Cherokee XJ, Grand Cherokee XJ & Comanche MJ

Quadratec Part #: 51107-0003
3
2 customer reviews
0 questions answered
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:
Skill Level 4 IconLevel 4Experts Only
1. Left Head Cast #7119 / 7120. 2. Block Cast #405. 3. Fuel Injected, Gas, Overhead Valve, Rear Crank Pilot Hole is 7/8" Deep.
Installation Time: 12-16 hours
Warranty
3 Years with Unlimited Mileage Warranty.
  • Engine Size: 4.0L I-6
  • Engine Fuel: Gasoline
  • Shipping Weight: 356

  • Jeep Wrangler (YJ)

  • 1995 Jeep Wrangler (YJ)
  • 1994 Jeep Wrangler (YJ)
  • 1993 Jeep Wrangler (YJ)
  • 1992 Jeep Wrangler (YJ)

  • Jeep Cherokee (XJ)

  • 1995 Jeep Cherokee (XJ)
  • 1994 Jeep Cherokee (XJ)
  • 1993 Jeep Cherokee (XJ)
  • 1992 Jeep Cherokee (XJ)

  • Jeep Grand Cherokee (ZJ)

  • 1995 Jeep Grand Cherokee (ZJ)
  • 1994 Jeep Grand Cherokee (ZJ)
  • 1993 Jeep Grand Cherokee (ZJ)

  • Jeep Comanche (MJ)

  • 1992 Jeep Comanche (MJ)
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ATK Engines Replacement 4.0L I-6 Engine Reviews

Daniel D.
12/18/2020
5

Exactly as advertised. My 1994 wrangler blew the motor after 175k miles. I ordered this engine and installed it in my home garage in 2 days.

I installed a new oil pan, timing chain cover, water pump, shock mounts and thermostat housing. Runs like it’s brand new.
Brian R.
3/10/2022
1

Not happy waited 5 weeks when they said it was in stock ready to ship , then it shows up .060 over bore on the cyl and the crank looks like it’s been dropped down a stairwell ! Your paying top dollar of your hard earned money , spend it somewhere else , I’m going to have to upgrade my cooling system because it runs so much hotter

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