knock sensor fits 85 and up 22re's from my experience which is alot as a smog tech these sensors go bad from time to time or get broken when a oil change is done and the you check engine lite comes on after the engine rpm hits 2800 and above (code 21 i think) any way i have several of these sensors toyota wants an arm and leg (over 130.00 ) for this sensor i'll sell u these for 35.00 each e-mail or pm at grumpy1@netptc.net