• Toll Free: 800-555-3353

ATK Replacement Jeep Engines

Replace or upgrade your existing block with ATK remanufactured engine blocks!

Built from the best replacement parts, ATK blocks rival stock engines in overall quality, and have made ATK the only North American engine manufacturer to earn ISO/TS16949 certification.

Every ATK Engine Block includes:

  • Fully remanufactured long block assembly
  • Cylinder head, rocker arms & new oil pump
  • Timing components & Gasket installation set
  • 3-year, unlimited mileage warranty

View our complete product overview for more details on ATK Replacement Engines.

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ATK Replacement Jeep Engines
Any Questions?...Call Toll-Free 1-800-555-3353

ATK engines employ over 150 processes in manufacturing, with all parts tested for quality.

  • Engine blocks are magnafluxed, bored, precision-honed, and mains are line-honed
  • Camshaft bearings are line-bored for accurate center-to-center clearance
  • Surfaced blocks and cylinder heads are precision-surfaced
  • Cylinder heads magnafluxed and machined for three-angle valve seats
  • Crankshafts are stress-relieved, precision-ground, and micro-polished
  • Camshafts are precision-ground or replaced with new parts

ATK Engines are shipped for free upon return of your old engine. The engine core needs to be the same type as the ATK engine, with no visible damage and 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.

Please provide your vehicle VIN number, plus cylinder block and head casting numbers before ordering.

See published warranty statement for complete details.

    • AMC 151 Replacement Jeep Engine

      Part Number: ATKDA25

      Price: $1,468.99

      Cart Price $1,468.99


      • Fits 1981 to 1983 CJ7
      • AMC 151 engine
      • Fully remanufactured assembly
      • Expert craftsmanship
      Product Rating
    • Replacement Jeep Engines

      Part Number: ATKDC38

      Price: $1,522.99

      Cart Price $1,522.99


      • Fits 1984 XJ Cherokee
      • 2.8L 6 cylinder
      • Block cast #068, 889 or 818
      • Head cast #258, 889, 292 or 877
      Product Rating
    • Replacement Jeep Engines

      Part Number: ATKDC93

      Price: $1,522.99

      Cart Price $1,522.99


      • Fits 1985 to 1986 XJ Cherokee
      • Fits 1986 MJ Comanche
      • 2.8L 6 cylinder
      • Block cast #061,379 or 695
      Product Rating
    • AMC 150 Replacement Jeep Engine

      Part Number: ATKDA24

      Price: $1,664.99

      Cart Price $1,664.99


      • Fits 1983 to 1987 YJ Wrangler and CJ
      • Fits 1984 to 1987 XJ Cherokee
      • Fits 1986 to 1987 MJ Comanche
      • AMC 150 engine
      Product Rating
    • AMC 150 Replacement Jeep Engine

      Part Number: ATKDA27

      Price: $1,664.99

      Cart Price $1,664.99


      • Fits 1986 CJ7
      • Fits 1986 XJ Cherokee
      • Fits 1986 MJ Comanche
      • AMC 150 engine
      Product Rating
    • AMC 258 Replacement Jeep Engine

      Part Number: ATKDA03

      Price: $1,686.99

      Cart Price $1,686.99


      • Fits 1981 to 1984 CJ
      • AMC 258 engine VIN C block
      • Block casting: 3235444
      • Head castings: 3933000, 3224480 and 3241656
      Product Rating
    • AMC 258 Replacement Jeep Engine

      Part Number: ATKDA26

      Price: $1,686.99

      Cart Price $1,686.99


      • Fits 1983 to 1985 CJ7
      • AMC 258 engine
      • Fully remanufactured assembly
      • Expert craftsmanship
      Product Rating
    • Replacement Jeep Engines

      Part Number: ATKVA03

      Price: $1,795.99

      Cart Price $1,795.99


      • Fits 1981 to 1983 CJ
      • Fits 1981 to 1983 SJ Full Size
      • Fits 1981 to 1983 J-series truck
      • 4.2L 6 cylinder
      Product Rating
    • Replacement Jeep Engines

      Part Number: ATKKA26

      Price: $1,799.99

      Cart Price $1,799.99


      • Fits 1981 to 1985 CJ
      • Fits 1981 to 1985 SJ Full Size
      • Fits 1981 to 1985 J-series truck
      • 4.2L 6 cylinder
      Product Rating
    • AMC 258 Replacement Jeep Engine

      Part Number: ATKDA20

      Price: $1,904.99

      Cart Price $1,904.99


      • Fits 1986 to 1987 YJ Wrangler and CJ
      • AMC 258 engine VIN C block
      • Block casting: 3235444
      • Head casting: 3933002
      Product Rating
    ATK Standard Engine Warranty

    ATK has always been a leader in innovation, offering products, warranties and programs that have redefined the industry. That leadership is evident in our products and our support.

    ATK warrants to the original purchaser that each engine sold by ATK shall be free of defects in material and workmanship under normal use and with periodical maintenance as set forth by the original manufacturer subject to the following terms and conditions.

    Definitions* Engine: As used in this warranty refers to the remanufactured assembly (basic block, cylinder head and internal components) as supplied by ATK. * Cylinder Head: As used in the warranty refers to the remanufactured cylinder head including those parts and accessories as supplied by ATK. * Transmission: as used in the warranty refers to the remanufactured transmission including those parts and accessories as supplied by ATK.

    Term: Standard Warranty: This warranty shall exist for 3 years and Unlimited miles. Warranty term begins on date of installation. The Standard Warranty applies to all ATK products with the following exceptions:* European and Diesel Engines carry a warranty term of 12 months or 12,000 miles whichever occurs first. * Cylinder Heads supplied separately carry a warranty term of 3 months or 3,000 miles whichever occurs first. * Commercial vehicles under 11,000 GVW carry a warranty term of 3 years or 75,000 miles whichever occurs first. * Trucks Over 11,000 GVW (Gross Vehicle Weight) carry a warranty term of 12 months or 12,000 miles whichever occurs first. * Motorhomes: Class A or Motorhomes over 11,000 GVW are NOT COVERED by the ATK warranty. ATK expressly does not offer engines for these applications. Please be aware that only engines designed expressly for large motorhomes should ever be used in such an application. ATK does not catalog nor prepare engines for these applications and therefore takes no responsibility when an ATK engine is used in this manner. * Marine: Engines cataloged and sold as Marine Engines are specially prepared for this use and carry a warranty term of 12 months with a replacement liability of $350.00. Engines used in marine applications that are not cataloged carry a warranty term of 30 days with no provision for labor claims. ATK does not recommend engines be used as marine engines unless cataloged as such. * Farm, Lift Truck and Industrial applications carry a warranty term of 12 months with a replacement liability of $350.00. Product Replaced Under Warranty: Product replaced under warranty carries the remainder of the original product’s warranty term. * Transmissions: carry a warranty term of 3 years or 75,000 miles which ever occurs first.

    Standards: Subject to the limitations listed herein. ATK, at its option, shall repair or replace a product within the warranty term after determination by ATK that the product is defective. All products are to be returned to ATK for inspection. Products not returned to ATK will not be warranted. All repairs and/or replacements covered by this warranty must be authorized by ATK.Unauthorized repairs will not be paid.

    Limitations: This warranty applies to products originally supplied by ATK. This warranty does not apply to or include any of the following:* A. Damage as a result of OVERHEATING, LACK OF LUBRICATION or CONTAMINATION. * B. Damage resulting from PRE-IGNITION or DETONATION. This includes but is not limited to: melted or broken pistons, broken piston rings, damaged cylinder heads, leaking head gaskets, etc. For more information regarding pre-ignition and detonation please contact our Customer Service Department. * C. Repair or replacement required as a result of any accident or misuse. * D. Repair or replacement of any accessory or service item, including specifically but not limited to: all components of the cooling, fuel, electrical and ignition systems in addition to all belts, hoses, and filters. * E. Any product used for competition racing or related purposes. * F. Any product to which a device or accessory not conforming to original manufacturer’s specifications has been installed. * G. Any product on which periodic maintenance services required by the original manufacturer have not been performed.

    Limited Liability: ATK’s liability under this warranty is limited solely to the repair or replacement of defective product. ATK shall not be liable for any incidental, special, consequential or exemplary damages, includingbut not limited to rental cars, towing fees or for any service not expresslyprovided for herein, relating to or arising from the ATK product.

    Limited Warranty: This warranty is given in lieu of all other warranties, expressed or implied, including any warranty of merchantability, or fitness for a particular purpose, on the part of ATK or the dealer installing the engine. No dealer nor any agent or employee thereof, is authorized to extend or modify this warranty.

    Additional Owner/User Obligations: Initial Startup: Valves must be readjusted to manufacturer’s specifications. Due to various component designs, cylinder head re-torque may or may not be required in your particular application. Refer to factory shop manual for the proper procedure for your engine type. If for any reason you are unsure what action to take please contact our Customer Service Department via our Toll Free telephone number. * Please keep all service records (repair orders, invoices, etc.) related to engine maintenance and service. In the event of an engine failure you will be required to provide copies of the installation invoice and maintenance records. * First Service Between 600-1000 Miles After Installation: Oil and oil filter must be changed, valves readjusted and cylinder heads re-torqued (refer to initial startup instructions).Failure to perform these basic operations may result in a voided warranty

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