horseman with no horse 67 #1 Posted May 6 the rubber ring that goes around my p218 oil filter broke. i know that sucker is pretty essential to cooling. do you guys know where i could get one? Share this post Link to post Share on other sites
sqrlgtr 3,041 #2 Posted May 6 Case Ingersoll Tractors Northeast | Connecticut . Onan Parts.Com, Rebuild Parts for Onan engines might try these two places Share this post Link to post Share on other sites
lynnmor 8,853 #3 Posted May 6 1 hour ago, horseman with no horse said: the rubber ring that goes around my p218 oil filter broke. i know that sucker is pretty essential to cooling. do you guys know where i could get one? That gasket is now hard to find, Google Onan 122-0502 to search for one, you might get lucky. The Case website mentioned above has a solution if you can't find the original. Share this post Link to post Share on other sites
JoeM 10,039 #4 Posted May 7 Just wondering if a piece of fuel line could be split and put around the opening? 1 1 Share this post Link to post Share on other sites
WHX?? 56,880 #5 Posted May 7 5 minutes ago, JoeM said: Just wondering if a piece of fuel line could be split and put around the opening? Excellent idea Joe. There are many different sizes of automotive vacuum line tubing a guy could try. Share this post Link to post Share on other sites
sqrlgtr 3,041 #6 Posted May 7 (edited) 1 hour ago, JoeM said: Just wondering if a piece of fuel line could be split and put around the opening? I think anything that would direct the air toward #2 cylinder insted of letting it escape around the oil filter would work. I have tried running mine without for a minute or two just to see how much air you loose and it is indeed a lot! Edited May 7 by sqrlgtr Share this post Link to post Share on other sites
Streetrodchev 1,136 #7 Posted May 8 When my filter air gasket broke, I used weather strip glue to put it back on, and then ordered a new one. It stayed in place until I changed oil the following time, at which time I put a new one on. Share this post Link to post Share on other sites
top_cat 41 #8 Posted June 10 Lost mine in the field a few weeks ago. Ordered one on EBay for $13.95. Found the original one few days ago. They are identical in fit and material. Hope this helps. Share this post Link to post Share on other sites
DLF 73 #9 Posted June 11 On 6/10/2026 at 7:58 AM, top_cat said: Lost mine in the field a few weeks ago. Ordered one on EBay for $13.95. Found the original one few days ago. They are identical in fit and material. Hope this helps. I have to have mine clamped between the front and side cover to keep it in place. The Onan moves a lot of air and will blow it out. The part no. is 0122-0502. Share this post Link to post Share on other sites
