Between 1971 and 1979.
Volkswagens are built by German people, who do NOTHING at random. Let us, then, dissect this part number.
The first three digits are the model which this part was originally used on. In this case, the first 1 means "type 1"--sedans--and the "13" immediately after it stands for Super Beetle. (This is also how we know the part is from a 1970s-era car: Supers were introduced in 1971.)
The second group is the Part Class. The "3" is for transmission parts; 01 means the case. The whole transmission is part group 300.
The third group is just a one-up notation, but VW liked to use the same numbers for the same part on different cars--like a brake shoe on a Super and one on a Bus would have the same third group, even though bus brakes and bug brakes are different.
a Pontiac 301
The spark plug gap is .060.
103 and 301
103 and 301 .
At 103 N Adams St, Rockville, MD (301-294-2245).
printable diagram for firing order for 1980 trans am turbo 301 4.9 engine
from factory they offered a Pontiac 400 w/ 4-speed or the Olds 403. 301 was also available.
That's the year 301.
less. One hundred and something is always less than three hundred and something.
[1 January] 301 to [31 December] 400.
1-8-4-3-6-5-7-2 Rotor turns clockwise.
The first year of the fourth century would be 301 (A.D.).