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ATK AMC 258 CID Inline 6 Cylinder Replacement Jeep Engine - DA20

universal fit logo


  • ATK NORTH AMERICA | Part Number: ATKDA20
  • Engine Configuration:L6
  • Displacement:258
  • Engine Type:Long Block
  • Fitment:Universal Fit


When you purchase an engine from ATK you can rest assured that you are buying something that is better than new quality. Why does ATK have better than new quality? Every engine that ATK remanufactures is reverse engineered to ensure that any original factory defects are removed, saving you time and money and keeping your car or light truck on the road and out of the shop. *Retail price does not include the manufacturer core charge. A sales rep will contact you when your order is received regarding the core charge and availability.



Question & Answers

1 Answered question

What does it mean by "Valve cover bolts through center?" Does it not have multiple bolt holes around that valves on the block meaning the valve cover needs to bolt to the top of the rocker bar?

Asked by Marshall from United States on

Hello Marshall, This motor is for use with the plastic valve cover the used 2 studded rocker arms. You can run that valve cover or you can upgrade tot he aluminum valve cover which requires drilling and tapping a few holes. Thanks for the inquiry.

Answered by Adam from United States on


As the largest private label crate engine remanufacturer in North America, ATK has been around for over 80 years producing parts including high performance engines, transmissions and rear axles. When your Jeep needs an engine rebuild, an ATK remanufactured engine uses reverse engineering processes to virtually eliminate factory defects that hinder performance. One reason ATK is at the forefront of engines is their adherence to thorough cleaning and inspection techniques and their machining and magnafluxing capabilities. If staying out of the garage and out on the trail is a priority, rely on ATK to get your 4x4 up and running. Shop ATK NORTH AMERICA Now