Here in Detroit packaging engineers call that a "production variance" it was the reason that in the 1970's with some small, v-8 engined cars, you had to pull the engine to change the back 2 spark plugs!


kirkusblog.com
2016 M3W John A Prestwich Special
1952 Ford 8N
1968 Honda CL175,and 2018 Ural Retro