o2 sensor left and right have different numbers?

[MuRCieLaGo]

Hi,

It's been a while since last time I posted here. Can't work on the car, I'm on a ship since June and until November.

However I'm starting to order some parts.

I've seen on eBay a guy selling NGK NTK o2 sensors, left and right have different numbers. Haven't touched the ZR-1 since a while but if I recall, both left and right are supposed to be the same, right?

Links:

http://www.ebay.com/itm/NGK-NTK-Oxygen-O2-Sensor-Upstream-Left-1990-1995-Chevrolet-Corvette-nv-/291799271830?fits=Year%3A1991%7CModel%3ACorvette%7 CSubmodel%3AZR-1&hash=item43f0978996:g:GjIAAOSwzJ5Xaeve&vxp=mtr

http://www.ebay.com/itm/NGK-NTK-Oxygen-O2-Sensor-Upstream-Right-1990-1995-Chevrolet-Corvette-kl-/291799277547?fits=Year%3A1991%7CModel%3ACorvette%7 CSubmodel%3AZR-1&hash=item43f0979feb:g:eYkAAOSwGIRXae35&vxp=mtr

Thanks for your help!

[Jagdpanzer]

Get them from Jerry's then you know they are the right ones.

[Hib Halverson]

I've never used an NTK sensor in an LT5, but the listing I found on Rockauto.com shows PN 12003 fitting both left and right. Only NTK and Walker list their sensors as fitting right and left even though it's the same PN.

Always used Denso O2Ses in my LT5 because they have great durability.

I might add that Rockauto.com beats that eBay vendor's price. NTKs are 31.89-ea and Densos are 28.79-ea.

[MuRCieLaGo]

So Denso is cheaper and better? Sounds good, will order 2 from RockAuto.

Denso are also the same left and right?

Thanks for your advices!