Knock / Detonation Sensor 96-04 Honda Civic, Acura EL, RL In order to avoid return hassle and save yours and our time, you must cross-check indicated reference part numbers against those found on your old unit. Do not rely on vehicles compatibility list, which is presented for the reference purpose and shouldn't be your guide to determine compatibility. If you are unsure, you may call local dealership (auto parts dept.) to obtain correct part numbers or ask your mechanic. If you would like us to help you, please contact us and provide your vehicle's detailed info such as: Make/Model/Year/Engine/Full VIN# and we will do our best to find compatibility. PART REFERENCE NUMBERS: OEM: AIRTEX / WELLS: 30530P2MA01 30530-P2M-A01 30530PV1A01 30530-PV1-A01 5S2140 SU4778 STANDARD MOTOR: BECK/ARNLEY: KS65 1580821 OTHER: 8472907 *Please cross-check indicated OEM reference codes against those found on your current unit. You may call local dealership (auto parts dept.) to obtain correct numbers. COMPATIBLE VEHICLES: * Models presented for reference purpose only! Year: Make: Model: 1996-2000 HONDA CIVIC HX 1996-1997 HONDA CIVIC DELSOL SI 1996-2000 HONDA CIVIC EX 1997-2000 ACURA EL 1996-2004 ACURA RL