Whats the difference in the D16 head codes
I just picked up a pair of heads for my 91 Si (yes a pair) one will be refreshed and the other will be sold. But, they have two different codes stamped on the heads. These are stock D16a6 heads
They are:
PM9-5
PM3-11
Are these significant in telling the year of the car they came off of???
Thanx
They are:
PM9-5
PM3-11
Are these significant in telling the year of the car they came off of???
Thanx
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