A ABIGAIL Oxygen Sensor Socket Set — 5‑Piece O2 Sensor Wrench Kit with M18/M12 Thread Chasers, Black Oxide

The A ABIGAIL 5-piece Oxygen Sensor Socket Set is a compact, offset O2 sensor wrench and thread chaser kit built to remove and install oxygen sensors and clean damaged threads even in confined engine spaces.

This kit combines four specialty sockets and two thread chasers designed for automotive oxygen (O2) sensors: a deep broach socket, a low-profile crowfoot, an offset crowfoot and two M18/M12 thread chasers, all in 3/8" drive sizes. Constructed from chrome-molybdenum steel and finished in black oxide, the tools give you leverage where access is tight and protect threaded ports by repairing cross-thread or damaged threads before sensor installation.

How does this set make oxygen sensor removal easier?

The sockets are slotted and shaped so the sensor wiring remains attached while you turn, and the offset and low-profile designs let you reach sensors surrounded by exhaust components and brackets. Using a ratchet or breaker bar the set provides mechanical advantage while reducing strain on the harness and sensor tip.

• Slotted 6-point sockets let wiring pass through without disconnecting the sensor.
• Offset crowfoot reaches sensors behind pipes, heat shields or suspension arms.
• Low-profile crowfoot fits shallow, cramped sensor locations.
• Deep broach socket accepts the sensor body for a firm grip on rounded flats.

Can this kit fix damaged sensor threads and prevent leaks?

Yes — the included M18 x 1.5 and M12 x 1.25 thread chasers are intended to clean and restore common oxygen sensor threads so new sensors seat properly. They remove corrosion, paint and minor cross-threading without removing metal unnecessarily.

• M18 and M12 sizes cover most modern and older O2 sensor thread standards.
• 3/8" drive compatibility lets you use routine ratchet tools to control torque.
• Thread chasing reduces the chance of sensor mis-seating and exhaust leaks.
• Use chasers before sensor installation to ensure smooth start threads.

What materials and finishes are used for longevity and corrosion resistance?

The sockets and chasers are made from chrome-molybdenum and solid cast steel to withstand repeated torque and impact use. A black oxide finish reduces surface rust and gives the tools a durable industrial look that holds up in shop environments.

• Chrome-molybdenum steel for strength under high torque.
• Solid cast construction to resist cracking and deformation.
• Black oxide coating provides basic corrosion protection and reduced glare.
• Made to work with standard 3/8" ratchets, extensions and breaker bars.

Which sizes and components are included in the pack?

The 5-piece kit contains the common sizes and styles technicians need for O2 sensor service. Each piece fills a different access or repair need so you can handle a broad range of vehicle makes and sensor locations.

• 1 × 3/8" drive extra-deep broach socket (47 mm / 1.85 in length).
• 1 × 3/8" drive low-profile crowfoot socket (29 mm / 1.15 in length).
• 1 × 3/8" drive offset crowfoot socket (78 mm / 3.1 in length).
• 1 × M18 x 1.5 thread chaser and 1 × M12 x 1.25 thread chaser, both 3/8" drive.

Who is this for? This A ABIGAIL set is aimed at DIY mechanics, independent technicians and professional shops that routinely replace or inspect oxygen sensors and need compact tools for hard-to-reach locations. It is also useful for anyone who wants to repair compromised sensor threads to ensure a proper seal before installing replacement sensors — a practical kit for garages, roadside repair work and maintenance bays.