SK O2 Sensor Socket and Thread Chaser Set — 5-Piece 7/8" (22mm) Offset & Long Sockets, M12/M18 Chasers

SK 5-piece O2 sensor socket and thread chaser set is a compact automotive kit designed to remove, install, and service oxygen sensors quickly and without damaging sensor wires or threads.

Built for professional mechanics and home DIYers alike, this set combines offset and long sockets with two thread chasers to handle stuck or corroded O2 sensors on most modern vehicles. Heat-treated alloy construction, a black phosphate finish, and a dedicated carrying case make the kit durable and easy to transport. The sockets accept both 3/8" and 1/2" drives and include features intended to protect wiring and threaded ports during service.

How does this set make oxygen sensor removal easier?

The offset 7/8" (22mm) sockets provide low-profile access at tight or angled locations where a regular wrench won't fit. A wide wire gate permits the sensor lead to pass without pinching, so you can turn the sensor while preserving its wiring. The slotted square drive reduces slippage when used with ratchets or breaker bars.

• Offset sockets and long socket for obstructed or deep-mounted sensors
• Wide wire gate prevents wire damage during loosening
• Slotted square drive for better contact with ratchets

What materials and finishes give this kit long life?

Sockets are heat-treated alloy steel for high strength; the long socket uses CR-V steel for additional toughness where reach is critical. A black phosphate coating protects against rust and wear, extending service life in workshop environments. Hardened construction also resists rounding under high torque applications.

• Heat-treated alloy steel bodies for durability
• CR-V long socket where extra reach and toughness are needed
• Black phosphate finish for corrosion resistance

What do the thread chasers do and why include them?

The kit contains M12 x 1.25mm and M18 x 1.5mm thread chasers that repair and clean sensor mounting threads before installation. Using the chasers removes rust, debris, and minor cross-thread damage so new sensors seat correctly. They fit 3/8" ratchets, making them quick to use during routine sensor replacement.

• M12 x 1.25mm and M18 x 1.5mm sizes for common sensor ports
• Re-taps and clears debris to ensure proper sensor seating
• Compatible with 3/8" drive ratchets for fast operation

Which vehicles and jobs is this set suitable for?

This O2 sensor removal tool works with most vehicles that use threaded oxygen sensors or vacuum switches. It’s useful for replacing worn sensors, inspecting signal wiring, and clearing seized fittings during exhaust or emissions-related repairs. The variety of sockets addresses both shallow and recessed sensor locations.

• Fits many domestic and import vehicles with 22mm O2 sensors
• Useful for sensor replacement, inspection, and repair prep
• Compact case keeps parts organized for mobile use

Who is this for: Automotive technicians, fleet maintenance staff, and hands-on car owners who routinely service exhaust systems and emissions components will find this SK set valuable. It’s especially helpful when sensor wiring is fragile, threads are corroded, or access is limited—providing the tools to remove, clean, and install sensors more safely and efficiently.