Anyone know a good place to get them for my car and do I just order 2 for the header? Are there different sizes? Mine has two in the header and I don't know if the other B-series over here did. Thanks.

 

The best ones are Honda-pricey. There are others out there-do a search for sources. Be very careful as this topic has shown that some do not last as long as others. If your ECU requires 2 sensors you need to determine which the B16 came with. There are solutions to this as well-search is your friend. I have no idea why you would have 2 on the header itself. Generally, the OBD-II engines will have one before the CAT before the header flange and one at the opposite end near the CAT outlet flange.

 

Thanks, I guess the obd-0 motors which were never sold over here are different, I 'll have to find out. How much are the Honda ones around for each one?

 

I'm running a generic Bosch on my RX-7, is cost a whopping $16 (one wire, splice in connector.)

My gas milage has jumped 2.5mpg over the 166k mile stocker it replaced, so I know it's working. (24.5mpg, hard driving, mostly highway h: )

 

Found bosch for $35, half of OEM price.
What is better about the OEM sensor?

 

Found Bosch for $35, half of OEM price.
What is better about the OEM sensor?
How do I tell it is bad?

 

It has a factory plug and comes in a Honda box. That's about it. Generic sensors just have a wire lead (or leads) and a connector (or a few) to splice on the stock connector. Bosch also makes an OEM style one that comes with the connector on it, but that costs about twice as much.

 

So far as I know-all OBD-O and OBD-I motors come with only 1 sensor. Can be mounted in several different ways. If you have a DC Sports header, for example, it is located on the collector near the outlet flange for a CRX. True that they are 1-wire and can be had for different prices. Some have reported using aftermarket ones and having them fail very quickly. Be careful to NOT get anything on the tip. Use anti seize sparingly on the threads only.