Dust Cover Assembly w/ Gasket Fits Ford Tractor Fits:Ford- 8N SN: 263844 & up with side mounted distributor, When Converted To A 12 Volt System, (Distributor is mounted to the right side of engine & generator is mounted on left side ), NAA, Jubilee, 501, 541, 600, 601, 611, 620, 621, 630, 631, 640, 650, 651, 660, 671, 681, 700, 701, 740, 741, 771, 800, 801, 811, 820, 821, 841, 850, 851, 860, 861, 871, 881, 900, 901, 941, 950, 951, 960, 961, 971, 981, 2000 4 cyl, 2031, 2111, 2131, 4000 4-cyl., 4031, 4110, 4120, 4121, 4140 All 4 cylinder gas, LP & Diesel thru 1964- Specifications For side mounted distributors (1950-64) For tractors with generator / alternator mounted on the LEFT side, as sitting in the seat. Includes gasket Replacement Numbers:Replaces PNs:Ford- 86588587, FAA12239A- 0 All JJAgParts items have been hand selected by our team and are continuously monitored for Quality. Should a craftsmanship or fitment concern be identified, JJAgParts will work with you to stand behind our products. JJAgParts is an American owned and operated family business! Here at JJAgParts, we strive for customer satisfaction. If you are not satisfied with your order, please contact us so we can make it right. Note: OEM Part Numbers are for reference only and should be verified before purchase.