I HAVE MANY OTHER PARTS FOR THIS ENGINE NOT LISTED . PLEASE MESSAGE ME WITH YOUR NEEDED PART NUMBERS. OIL PUMP BODY ASSEMBLY parts lot only, not a complete pump - OEM GENUINE KOMATSU fits (6134-52-1100 ) oil pump YOU GET ONE EACH OF THE FOLLOWING PARTS. I can sell individual parts, just ask. ONAN 186-0531 Komatsu 6136-52-1200 Body assembly 186-0121 Komatsu 04010-10516 Key 186-0322 Komatsu 6136-52-1220 Bushing 186-0323 Komatsu 6136-52-1330 Bushing 186-0329 Komatsu 6136-52-1630 Bolt 186-0325 Komatsu 6136-52-1520 Gear* THIS COULD BE A 6134-52-1500 , I think there's an error in the Onan book and/or the Komatsu parts illustration I found. 186-0238 Komatsu 6136-52-1620 Pin 186-0326 Komatsu 6136-52-1520 Shaft , confirmed part number on the Komatsu label fits the 186-0325 gear 186-0327 Komatsu 6136-52-1610 Gear 186-0330 Komatsu 6136-52-1640 Valve 186-0331 Komatsu 6136-52-1650 Spring 186-0532 Komatsu 6136-52-1300 Cover assembly 186-0533 Komatsu 6136-52-1320 Shaft 186-0444 Komatsu 6136-52-1420 Bushing FITS ONAN DVC GENERATOR (I have many other parts for this engine, oil pump parts, pistons, fuel lines ,etc.) PLEASE ASK ME FOR WHAT YOU NEED. Onan New old stock Please look at my other items in my STORE and add me to your favorites list. Click on See all Categories for additional products. I have thousands of other Onan parts available that have not been listed , yet. Please inquire and include your Onan engine model and spec number when doing so. Cheers, Mike