Originally Posted by Cat
And it needs a oring seal. But get it from Caterpillar because that plug is for HEUI high pressure oil galley. That pressure goes as high as 3900Psi and is exposed to fairly high temperatures. Do not use will fit oring. You'll regret it if you do. Hope that helps. Safe Travels
Amen ; to purchase the O ring from Cat .
After three uses ( I am a slow learner ) of a high temp/pressure O ring from other sources on a different section of the HEUI oil pressure system and failures after 3,000 miles , I went to Caterpillar for the OEM part and have 12,000+ miles on the repair with factory part.
In my defense , not having a local Cat dealer ; nearest being a 50 min ferry ride and 2 hour drive away ; led me to trust a local truck repair shop , that said we use these, O rings, all the time .