Anyone know if there is an aftermarket oxygen sensor available?

 

Not sure what you mean. Have you checked eBay?

 

you can get OEM Denso at advanceautoparts.com for ~$60 shipped(not stocked) w/ coupon code "A123"($20 off). or spend over $75 and get $30 off w/ code "VISA."

note: get the 2-3 day shipping for less than $2 more!

 

If you are looking a replacement o2 sensor and you do not want to buy a new one from Honda, Denso and Bosch are fine. Make sure you spend the little extra money for the one which comes with a harness so it is plug an play. Makes everything much easier.

 

^what he said. don't just buy a "generic" one for less money. it wont work the way you want to. much too much work.

 

i think ebay might have one bro