NO RETURNS, PLEASE KNOW WHAT YOU ARE BUYING NEW OLD STOCK from Onan generator surplus. for stationary type 4 cylinder engines , used in generators and machinery that most likely runs at a constant RPM. Bosch diesel fuel injection pump. Name plate is stamped: Made in Germany specifically for Onan. NR. 0 460 494 213 VE R 315 147-0462-20 011 (circled) 752 08575 There are many other markings shown in the pictures. Please look carefully. I have posted the specs on this pump in the pictures. THIS PUMP WAS MOST LIKELY DESIGNED FOR A STATIONARY ENGINE APPLICATION. IT WILL NOT BE COMPATIBLE IN OTHER APPLICATIONS SUCH AS AUTOMOBILES OR TRUCKS WITHOUT PROFESSIONAL MODIFICATION. No returns on the pump. Please know what you are buying and do your homework. Bosch made many pumps that look similar but work differently. to the best of my ability using a mechanical caliper. the diameter of the shaft closest to the pump is 20mm. It tapers out to 16.5mm. I do not have a thread gauge but the threads have an overall diameter of 14mm. and there are approx 7 threads If you have further information regarding this or another item I have for sale, please feel free to let me know so that I may post it here for buyers who may not have such information. Winner pays CALCULATED shipping and handling anywhere in USA. Other countries must contact me for a postage quote. Please look at my other items in my STORE and add me to your favorites list. NOS means new old stock. These are items that are still in new and unused condition that have been on the shelf or in storage for a number of years. Most of my items are in the original factory boxes or cases. Some of these boxes show a good bit of wear and tear from storage time and handling. I try to add to my store listings all the time. Please keep in touch. Most items are sold "AS IS" with a "no return policy" unless stated otherwise in the body of the ad. Please know what you are buying and ask questions if you don't. I have always treated my customers with the utmost respect and will answer all emails to the best of my ability. If you are not satisfied with your purchase please contact me immediately. Please send part numbers when inquiring about certain parts. Sincerely, MIKE 11-3-21 IF YOU NEED TO CONTACT THE SELLER BY PHONE, PLEASE FOLLOW THESE INSTRUCTIONS: *FROM A DESKTOP COMPUTER, GO TO THE ITEM THAT YOU HAVE QUESTIONS ABOUT. *CLICK "CONTACT SELLER" LOCATED ON THE RIGHT SIDE OF THE PAGE, UNDER SELLER INFORMATION. *SELECT THE "OTHERS" OPTION. *CLICK "VIEW PHONE NUMBER".