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ttrainxl · 06-10-2023, 04:23 PM

I have a ‘95 Civic EX with the stock D16Z6 engine. I’ve recently purchased a D15Z1 long block from a local junkyard and would like to swap the head, but keep my D16 block. The D16 uses a four wire O2 sensor and the D15Z1 uses the five wire wide band O2 sensor. My stock wiring harness has a completely different plug for the O2 sensor.

My question is, is there a way to rewire the stock harness to use the five wire O2, or should I completely swap the P07 harness in? Are there any other components between the two harnesses that are different?

Has anyone else done a similar swap before and had to solve this issue?

06-10-2023, 04:23 PM	#1 (permalink)
ttrainxl EcoModding Lurker Join Date: Sep 2021 Location: Virginia Posts: 70 Thanks: 0 Thanked 10 Times in 9 Posts	Honda head swap questions I have a ‘95 Civic EX with the stock D16Z6 engine. I’ve recently purchased a D15Z1 long block from a local junkyard and would like to swap the head, but keep my D16 block. The D16 uses a four wire O2 sensor and the D15Z1 uses the five wire wide band O2 sensor. My stock wiring harness has a completely different plug for the O2 sensor. My question is, is there a way to rewire the stock harness to use the five wire O2, or should I completely swap the P07 harness in? Are there any other components between the two harnesses that are different? Has anyone else done a similar swap before and had to solve this issue?