Up for sale is a NOS, Made in Germany, transmission timing hole plug set. The threaded bung screws right into the top of ANY Mk1, Mk2 or Mk3 with and 020 transmission. The cap presses into the top of it - just like when it left the factory. This auction is for a white plug as found on all MK1's from the factory. If you would like to purchase a green (or MK3 style) plug, we also offer those in our store.