I HAVE MANY OTHER PARTS FOR THIS ENGINE THAT ARE NOT LISTED . PLEASE MESSAGE ME WITH THE NEEDED PART NUMBERS.FITS CUMMINS L634T-A SEE ILLUSTRATIONS IN YOUR PARTS BOOK You get a lot of stuff for your money on this deal. I also have some radiators that this will work on. Ask for more info on that. LIKE 35 POUNDS OF PARTS 541-0255 ONAN RADIATOR KIT FAN HOSES CLAMPS AND LOTS OF HARDWARE SEVERAL BRACKETS TOO. NOS FAN IS 18" DIAMETER, HAS FOUR MOUNTING HOLES THAT ARE 2-1/8" ON DIAGONAL CENTERS, CENTER METAL PART OF FAN BLADE IS 5-1/4" DIAMETER. NEW OLD STOCK. https://archive.org/stream/934-0255_Onan_L634T-A_Diesel_Engine_Parts_manual_09-2013/934-0255_Onan_L634T-A_Diesel_Engine_Parts_manual_09-2013_djvu.txt WINNER PAYS shipping , please calculate below. USA ONLY Please put me on your favorites. I have many NOS Onan engine parts and accessories in stock. I accept PayPal, ALL ITEMS SOLD "AS IS" except when a guarantee is stated in the body of the ad. Buyer pays shipping. No returns. 11-3-21