D337 cylinder heads - completely rebuilt including valves - 5 available. Rebuilt by Diesel Cast & Weld in MN. We had these rebuilt years ago when we were running about 5 Cat DW-21 scrapers. This engine was also used in some cranes.
"I signed up again, 3 year. Membership has more then paid for itself in troubleshooting and advice." - Daniel O
"I became a member recently because the wealth of knowledge here is priceless." - Chris R
"I also joined a year ago. had been on here a couple of times as a non-member and found the info very helpful so I got a one year subscription (not very expensive at all) to try it out. I really like all the resources on here so I just got a three year. I think its a very small price for what you can get out of this site." - Jason N