Model Year of Your ZX Turbo Oxygen sensor nut size (type) 88-89 ECU factory part number and type Number on 88-89 ECU
81-85 22MM (Zirconium) 23710-25P01 (non turbo) A18-A00 M42
81-85 22MM (Zirconium) 23710-25P00 (non turbo) A18-A00 M84
81-85 22MM (Zirconium) 23710-25P11 (non turbo) A18-A01 M43
81-85 22MM (Zirconium) 23710-25P10 (non turbo) A18-A01 M85
81-85 22MM (Zirconium) 23710-25P06 (non turbo) A18-A02 M44
81-85 22MM (Zirconium) 23710-25P05 (non turbo) A18-A02 M86
81-85 22MM (Zirconium) 23710-25P16 (non turbo) A18-A03 M45
81-85 22MM (Zirconium) 23710-25P15 (non turbo) A18-A03 M87
86-89 17MM (Titania) 23710-26P01 (turbo) A18-A04 M46
86-89 17MM (Titania) 23710-26P00 (turbo) A18-A04 M94
86-89 17MM (Titania) 23710-26P11 (turbo) A18-A05 M47
86-89 17MM (Titania) 23710-26P10 (turbo) A18-A05 M95
86-89 17MM (Titania) 23710-26P06 (turbo) A18-A06 M48
86-89 17MM (Titania) 23710-26P05 (turbo) A18-A06 M96
86-89 17MM (Titania) 23710-26P16 (turbo) A18-A07 M49
86-89 17MM (Titania) 23710-26P15 (turbo) A18-A07 M97

Please read completely and carefully:

So, say you want to put an 88 Turbo ECU into your 85 Turbo car. You would need to swap the sensor bung (PITA to remove) and sensor to the zirconium type 17mm units. Then you would have to figure out how to re-wire the oxygen sensor wiring in the harness, because the sensors do NOT use the same wiring. You would be better off finding the correct ECU instead of trying to swap everything else to make O2 feedback work! Now, if this is a race car or you don't care at all about fuel economy then don't bother; just unplug the oxygen sensor and let the car perpetually run in open loop.


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