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Question By: Sahil on Oct 7 2018 8:06 AM
Typically lap the valve seats
Answer By: Willys Jeep Parts Tech on Oct 8 2018 9:08 AM

Question By: Kyle thomas on Apr 10 2018 11:26 PM
The 637182 is 1.525" at the diameter of the seat and the 637183 1.465" at the diameter of the seat.
Answer By: Willys Jeep Parts Tech on Apr 11 2018 11:06 AM

Question By: Rob on Apr 22 2012 12:00 AM
You also should change out the exhaust valve seat insert too.
Answer By: Willys Tech on Apr 23 2012 12:00 AM

Question By: Anonymous on Sep 19 2011 12:00 AM
Yes it should work just fine.
Answer By: Willys Tech on Sep 19 2011 12:00 AM

Question By: Kevin on Mar 10 2011 12:00 AM
Yes, they are set up for the unleaded fuel.
Answer By: Willys Tech on Mar 10 2011 12:00 AM