YES! The S14 auto speed sensor will work in the SR20DET trans.

[Beanstalk]

I am so sick of people giving people advice . The sensors may have different P#`s but they are identical. same diameter, depth and length. However the difference is the pinion gear. If you sector the gear in half or count the teeth there is one with 2 or so more teeth. i cant remember exactly which one. but this is what i did i had a 95 auto s/s and i ordered a new pinion gear from courtesyparts.com for $27 shipped and presto i have an accurate speedo.So if you dont know something use words like " IMO " or I heard just so people dont take your advice as golden