Anyone know why Honda did not put the narrower taper seat plugs in the 3.2?

Also, what is the stock OEM plug in our car and the torque spec??

Thanks,
Chris..

 

??

For NGK part numbers, the part # is ZFR5FIX-11 (TL-S application) or BKR6EIX-11 (NSX application/colder plug). I think the 4th digit is the heat range.

IK16 and IK20 are Denso part numbers. Stock is the IK16, and the IK20 is the colder plug.

Dont remember but i think it was like 8 lb/ft

 

My o/m (2002 model) states: premium model- PZFR5F-11 (NGK) PKJ16CR-L11 (Denso)
Type S: PZFR6E-11 (NGK) PKJ20CR-M11 (Denso)

Torque spec. is 13 lb./ft., not 8 lb./ft.; gap is 0.04 in. (1.1 mm)