ISR Performance OE Replacement SR20DET O2 Sensor - Skinny

Redtop S13 SR20DET engines use a narrower oxygen sensor connector than later SR20s, and this ISR Performance OE replacement O2 sensor is built with that skinny 3 wire plug so it clicks straight into the factory harness. Swapping out the worn sensor that came with a used import engine is one of the cheapest ways to get your fuel trims and mileage back in order.

What a new sensor fixes

An aged O2 sensor responds slowly and reports a skewed voltage, so the ECU chases a signal that no longer reflects reality. Symptoms include surging at light throttle, heavy fuel smell at idle and noticeably worse economy on the highway.

• OE replacement oxygen sensor for the SR20DET
• Skinny type 3 wire plug
• Plugs into the stock redtop S13 engine harness

Fitment

S13 redtop SR20DET. S14 SR20DET engines use the fat type sensor, not this skinny version, and S13 blacktop engines also take the fat plug.

Check your connector first

Because SR harnesses are frequently swapped between chassis, inspect the plug on your existing sensor and order the matching style. Installing the wrong connector type means cutting and splicing, which this part is meant to avoid.

All ISR Performance products are designed for off-road use only.