ISR Performance O2 Sensor Adapter Nissan 240sx SR20DET Vehicle Model_Cooper That is why they offer

That is why they offer their 2

Not suggested for any street driven LGT

Inn Step Diameter (C): 16

- Eliminates wheel hop / traction loss

ISR Performance O2 Sensor Adapter Nissan 240sx SR20DET Vehicle Model_Cooper That is why they offerPart #: IS O2ADPT ISR Performance O2 Sensor Adapter for your Nissan SR20DET. Have a Megan Racing, GReddy, or ISR Performance turbine outlet and don't want to buy a new O2 sensor because yours won't fit? This adapter enables the use of the skinny type O2 in the larger fat type whole. No need to go searching for that other O2 sensor when using aftermarket turbine outlet. Adapter can also be used as block off. Note: ISR orders might take a day of