I had a 1993 D21 2.4L 4x4 5-speed. I believe I bought the $39.99 one and it fit fine and cured the 35-40mph vibration I was having due to a deteriorated rubber bearing isolator. Go to
AutoZone.com | Vehicle Selection - Year. I didn't see that part when I looked for my 1999 Frontier, but they look the same as far as I can tell.
