eric8 7 #1 Posted 1 hour ago (edited) My 93 520h originally had a Nikki -0479 carb. I bit the bullet and ordered a brand new one directly from Cummins (-0496 model) which is the newest part number and direct replacement for the 0479. There is a round port on the new carb that isn’t cast into the old one. I believe this is the accelerator pump casting, but I was under the impression the 0496 is a non accelerator pump carb. Is there some type of block off plate that needs to go there? Edited 1 hour ago by eric8 Share this post Link to post Share on other sites
