I wanted to buy 2 new o2 sensors for my 96'gsr and I was planning on buying them from NGK. I found one for 49.85 part number: 24172 at http://www.ngk.com and another one at the same site for 139.00 part number: 24546. Tech support for NGK told me that 24172 is an older part number and they no longer make or offer those (that is all the information they really gave me). If this site still has them in stock I would much rather pay 100.0 instead of 278.00, but they look different. You can see the description for each part in the links below. Does anyone have experience with either or both of these, or anyone know what the differences benefit?


Part: 24172 (49.85)
http://www.ngk.com/more_info.a...=4020

Part: 24546 (139.85)
http://ngk.com/more_info.asp?AAIA=&pid=18029