Fuel pump for AD4-236 diesel engines, two-hole mounting. Tractors: MF175 (prior to s/n 236UA57083), MF180 (prior to s/n 236UA57265). Industrials: 31 (prior to s/n 236AU57265). Replaces 2641465, 2641478, 881303M91, 1447381M91.Product No. -- 3637287M91 | UPC -- 758351765795 | Standard Pack -- 1 | Weight -- 1.12 lbs