Walker Products 350-64055 Oxygen Sensor - OEM Replacement Premium O2 Air Fuel Ratio Sensor for Improved Engine Performance & Fuel Efficiency | Compatible with Multiple Vehicle Models | Perfect for Daily Commuting, Road Trips & Performance Tuning

I read on the Honda forum that some guy had used a Walker sensor with success and they are a quality product, he had used all 3 brands (Denso, NTK and Walker) with great success.I purchased this to help resolve a P0134 code.This is for a 2003 Honda Civic Hybrid, not standard Civic, I believe the Hybrid Civic has an extra sensor.Walker have 2 models numbers for the upstream A/F sensor (wide band), the one I have, 350-64055 and 250-54013, the specs on their website show them as being the part for a 2003 Honda Civic 1.3 Hybrid, and they also seem identical, I have no idea if these will work with a non hybrid Civic, I believe the Hybrid model differs slightly, I think it has an extra O2 sensor.I have now driven another 300 miles, and all still no CEL, and it is definitely smoother and back to its old self, one thing I noticed, with the faulty sensor, the instantaneous fuel meter was erratic, with the new sensor it's not, and as I said, my mpg is back in the 43-48 again. With the faulty sensor I was in the 34-38 mpg range.At 48 mpg I'm happy, and is slightly above average for this model if I'm correct, I'm also lucky that this car is a fun/project car and have 3 other cars to fall back on, so can take risks and experiment a little, if you are not in this position I would go down the Denso/NTK route.