Plastic dipstick tube fitted to early cars Pre metal dipstick tube.
This used the 12A116 dipstick which had a flat washer and just sat on top of the tube.
Not fitted to 850cc. Leyland had to increase sealing when they used closed circuit breathers etc. 998 Cooper, 1965 and "S" 1966 onwards.
Recommend: 1 x 12G107 per Mini.
For the metal dipstick tube, see 12A1261-S