Not enough info to give specifics. 2wd/4wd?, and how many liters? It should be printed on your vacuum diagrams sticker under the hood. Or in the manual that came with the truck, perhaps in the back. If you still can't find it, try calling an auto parts store, and tell them your looking to buy plugs and want to check on the gap. They should have it in their database. .035
gap is .035
The spark plug gap for a 1996 Dodge Dakota is .035 inches.
look at the label on the bottom side of the hood
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When changing the spark plugs of a car, it is important to remember the correct gap size. For a 1993 Dodge Dakota the spark plug gap size is .035.
The specified spark plug gapping for the 1992 Dodge Dakota with the 2.5L L4 is .035-inches. The Bosch OE Platinum part# is 8118. As in many modern replacement plugs they come already gapped from the factory,
.050 inch
.035 inch
with a ratchet and a spark plug socket
I just checked it was under my hood :P it was .040
.035