no they're not....thge 16v has the hole for the coolant level sensor...The 8v doesn't, does it? my '87 Cabriolet doesn't, nor does my Rabbit GTI. I ahve a BRAND NEW BOTTLE for an 8v, but w/o the hole.... Patrick Boyle '87 Scirocco 16v '87 Cabriolet '84 Rabbit GTI