NOTE: FREE SHIPPING will apply to this item on orders that total more than $99. If this item is purchased individually shipping within the lower 48 is extra and cost is based upon package size, weight, and distance from SCP.
Extensions are 18" over all length.
When using the SCP/Kooks headers the collectors where the oxygen sensors are located is moved substantially rearward. You will have to use either our new long lead oxygen sensors or some O2 sensor extensions.
To help you choose which will work best for you, consider these thoughts. If you have more than 60K miles on your existing O2s, then buy our new O2 sensors because these sensors do degrade with mileage. If you have had engine coolant pass over your O2 sensors, then buy our new O2 sensors. If neither of these situations apply to you then go with our O2 extensions.