V6 2.5 what do you meen V4 2.5 or V6 3.5
0.044 is your spark plug gap.
The correct spark plug gap is .044
0.44
.044
0.44 in.
Your gap should be (Gap 0.044inch) for DOHC 2.5l Altima
.44
1.1mm or .043 in.
0.44
The gap should be 0.043 inch.
.039 according to NGK's website.
It is 1.0 mm to 1.1 mm or 0.039" to 0.043" You can check in the manual for Nissan 1997 Altima