When you purchase an ATK cylinder head you can rest assured that you are buying something that is better than new quality. Why does ATK have better than new quality? Every head that ATK remanufactures is reverse engineered to ensure that any original factory defects are removed, saving you time and money and keeping your Jeep 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.
We're working on getting more reviews for this product. In the meantime, here's what people are saying about 4WP
Q: Is this California smog certified? Answer this question
A: Yes this is California compliant.
Answered by Dave from 4WP HQ on 05/09/2022
Q: So I'm really interested in getting a new head cylinder but I'm worried about the compatibility considering my engine is a little older. Will it matter if my engine is old? And will this be an upgrade to an older i6? Answer this question
A: Hello Not knowing what year your motor is makes it hard to say. Send your question again with year and model of Jeep and we will let you know.
Answered by Rody on 12/18/2014
Q: Is this head the same casting as my stock 0331 head that came on my 2000 wrangler and is notorious for cracking or the 0331 TUPY head that was corrected? Also, is this 100% complete and ready for installation? Answer this question
A: Hello Joel_Daddy, Thank you for the question. It states in the "Technical Details" this head is in fact #0331.
Answered by RK on 03/29/2014
Q: What size valves are in these? Does the shop show any improvements to the factory crack prone points? Answer this question
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
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