Harley Davidson Engine Number Stamps

For engines built between 1962 and 1969 there was a system put into the VIN to prevent tampering with or changing.

Harley davidson engine number stamps. Harley engines that were made before or in the 1960s have the model year of the engine as the first two numbers of the engine number which acts as a VIN. Complete Harley Davidson Kit. Numbers are also stamped on the cylinder.

The last digit of the VIN designates the model year with a letter. The number on the right case located near the front pushrod tube reads as follows 3561924 8 676 the number do not have a space between them as I have them here I did this because the 8 seems to have stamped with a different die. 1HD1AAK11BYO13478 The frame number is broken down like this.

The last 2 digits designate the year. Motor VIN Number Stamp Set For Harley-Davidson Evolution Shovelhead 1970-1999. Hardened steel stamps to restore motor numbers on Shovelhead and Evo motors.

The model year model and production number are all listed in a simple arrangement of numbers and letters which is clearly stamped at the top of the left engine case right below the V formed by the two cylinders. Harley engines made between 1981 and 2000 have a 10-digit VIN which was abbreviated from the 17-digit VIN that was stamped on the frame of the bike. The tamper-proof VIN stickers are typically black with white lettering.

This exception is discussed below. Discussion in Sportster Models started by gressleybear Oct 8 2020. Beginning in 1970 Harley started stamping VIN numbers on both the frame and engine case.

Thanks for any help ahead of time. Frame ID Numbers - 1981 and Later. MOTOR NUMBER STAMP TOOL SET VTWIN 16-1264.