1990 Nissan 300ZX Q&A
1990 Nissan 300ZX Question: heater door
You should get the repair manual from the dealer and the part too, I don't see any other source for the part. - Bret Bodas
If you mean the ducts that have louvers on them that fit into the dash they are only available at the dealer or a wrecking yard.If the problem is heater not flowing correctly there are three motors behind the dash that operate the blend doors in the heating and air conditioning housing. - patrick mannion
when i turn my heat on it blows cold air i never get heat but the blower is working good.