93-96 Jeep Grand Cherokee / 93-95 Wrangler 4.0L L6 Front Sensor

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Front O2 Sensor — 4.0L L6

Direct-fit oxygen sensor for carburetor and fuel-injection tuning on 4.0L inline six engines. Mounts at the factory location to monitor exhaust oxygen content and optimize air-fuel mixture. Critical for emissions control and engine performance.

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Key Features
  • Factory-location mount - Drops in where your original sensor was; no adapter required.
  • Carburetor and fuel-injection compatible - Works with both induction systems found on 4.0L powerplants.
  • Direct OEM integration - Maintains proper sensor signal to engine computer for accurate fuel trim.
Specs
  • Condition: New
  • Application: 4.0L L6 engines
Whats Included
  • Front O2 sensor
Frequently Asked Questions

Will this sensor work on a carbureted or fuel-injected 4.0L?

Yes — this sensor is compatible with both carb and FI setups on the 4.0L. The signal output works with either engine management system.

Do I need special tools or an oxygen sensor socket to install this?

An O2 sensor socket (usually $8–12) makes removal and installation much easier, but a regular wrench or socket will work if you're careful not to damage the sensor body. The sensor itself threads straight into the factory boss — no special fasteners.

Can I reuse the old wiring harness?

In most cases yes — the connector and wiring loom are standard across 4.0L models. If your old sensor connector is damaged or corroded, you'll need to source a replacement harness before install.