Harleys don't leak oil, they mark their spot.
A photo of the first Harley-Davidson repair shop in Mexico City with crew and author. The picture was taken in 1979.
are two tables listed here. The first is "Frame ID
Numbers - 1981 and Later." This information was
originally posted (13 Mar 1996) by Dan Kloch
and was then updated (13 Nov 1996) by Cheezie to include 1993-96 bikes. The second table is "Motorcycle ID Numbers 1970-1980." And was added by Dan on 22 Nov 1996. Thanks to those busy guys!
Frame ID Numbers - 1981 and Later
Frame ID Numbers - 1970-1980
Motorcycle Serial Numbers
Vehicle Identification Number (V.I.N.) is located on the engine crankcase and is the same as the number located on frame steering head.
Example: 1A 13478 H7
1A = Model Designation 1A = FL-1200 6E = FXEF-80 2A = FLH-1200 7E = FLHS-1200 3A = XLH-1000 9E = SS-250 4A = XLCH-1000 2F = FXS-1200 5A = GE-750 3F = SXT-125 6A = SS-350 Sprint 4F = SS-175 7A = SX-125 6F = SS-125 8A = M65-S 7F = XLCR-1000 7B = ERS 2G = XLT-1000 8B = MSR-100 3G = FLH-80 2C = FX-1200 5G = FLT-80 3C = SX-350 Sprint 6G = FXE-80 5C = MC-65 7G = FXS-80 6C = SR-100 9G = FXWG-80 1D = LE Sidecar 1H = FXB-80 2D = X-90 2H = CLE Sidecar 3D = Z-90 3H = FLH-80 Classsic 5D = SX-175 5H = FLHS-80 6D = SX-250 6H = FL-80 7D = MX-250 7H = FLH-1200 Police 9D = FXE-1200 8H = FLH-1200 Shrine 4E = XLS-1000 9H = FLH-80 Police 5E = FXEF-1200 1K = FLH-80 Shrine 13478 = Sequential Number H = Decade Code H = 1970 thru 1979 J = 1980 only 7 = Model Season 0 = 1970 1 = 1971 2 = 1972 3 = 1973 4 = 1974 5 = 1975 6 = 1976 7 = 1977 8 = 1978 9 = 1979
Crankcase Identification Numbers
Numbers located on both left and right
crankcase halves. Big Twin: Left Case - Outside, Lower Front Right Case - Inside, Gearcase Compartment XL Models: Left Case - Inside,
Primary Compartment Right Case - Outside, Near Oil Pump Stamped at Capitol Drive Facility Used to identify engine and track
production changes Example: 1588 321 007 15 = Engine Designation
1 = 1200cc Shovelhead 7 = 1000cc Iron XL 14 = 1340cc Shovelhead 15 = 1340cc Evolution 16 = XR-1000 17 = 883cc Evolution XL 18 = 1100cc Evolution XL 19 = 1200cc Evolution XL 20 = 1340cc Evolution,
California (1988 - *)
21 = 883cc Evolution XL,
California (1988 - *)
22 = 1200cc Evolution XL,
California (1988 - *) 88 = Model Year 321 = Day of Production: 001 = Jan. 1st 182 = Jul. 1st 032 = Feb. 1st 213 = Aug. 1st 060 = Mar. 1st 244 = Sep. 1st 091 = Apr. 1st 274 = Oct. 1st 121 = May 1st 305 = Nov. 1st
152 = Jun. 1st 335 = Dec. 1st 007 = Number That Day