On my 2001 Camaro SS (5.7 LS1), I am putting Speed Engineering long tube headers with their 3" pipes and mufflers to the rear, and I am seeking advice on whose upstream O2 sensors to use. I have read enough on similar posts here to know this gets people into trouble--engine codes, etc.

For reference: Best o2 sensors for ls1? (lts+ory)

When I go to popular online sites such as Summit and Jegs, they show different sensors for left and right upstream sensors. I am confounded by why they wouldn't be the same. Other posts here have scared me of using Bosch sensors, and have me wanting to try Denso's.

Summit shows Denso 234-4025 for upstream left, and Denso 234-4087 for upstream right... why wouldn't they be the same? (I am worried that the distinction might not apply to a vehicle running headers.)

Thanks in advance.

 

Left and right differences might have to do with connectors or wire length

 

That makes sense--thank you.

 

I used Corvette O2's since they have a longer wire.

 

I just used the Bosch 13111 sensors. Been on for over 10 years and Ive never had a problem

 

The ngk,s never done me wrong. They are different p/n left to right wire length/ smaller (tip) on one side. But never a problem.

 

 

Thanks to all of you, I feel confident I'll get this working now.