A ABIGAIL O2 Sensor Socket Set, 5-Piece 7/8-inch (22mm) Low-Profile Chrome-Moly for Tight Spaces

A ABIGAIL 5-piece oxygen sensor socket and thread chaser set is a compact, heavy-duty toolkit for removing and installing O2 sensors and vacuum switches even with wiring attached.

This set groups the most-used oxygen sensor socket sizes and two vacuum switch sockets into one toolkit so you can tackle exhaust sensor jobs without searching for specialty parts. The sockets are low-profile and slotted so the sensor wiring stays connected while you work; construction from chrome-moly steel with a black-oxide finish helps resist wear and corrosion. Whether you’re a DIYer doing routine maintenance or a professional needing a space-saving option for hard-to-reach sensors, this set offers the leverage and durability required for reliable removal and reinstallation.

How does this set make removing O2 sensors easier?

The sockets feature a slotted, low-profile design that clears the sensor harness and lets you operate with a ratchet or breaker bar in tight exhaust areas. An offset and compact geometry provides leverage in confined engine bays while the 6-point profile grips sensor hexes securely to reduce rounding.

• Slotted socket bodies allow wiring to remain attached during removal.
• Low-profile and offset shape fits cramped exhaust manifolds and downpipes.
• 6-point contact reduces slippage and preserves sensor hex corners.
• Compatible with both 3/8" and 1/2" drive tools for torque flexibility.

What materials and finishes are used, and why do they matter?

Each piece is forged from chrome-molybdenum (Cr-Mo) steel, chosen for its strength and fatigue resistance under high torque. A black oxide finish adds surface protection to slow rust and maintain a clean working appearance in a busy garage environment.

• Chrome-moly construction increases impact and torsion durability.
• Black oxide finish offers corrosion resistance and reduces glare.
• Solid cast steel build minimizes deformation during heavy use.
• Precision machining ensures accurate fit for sensor hexes and vacuum switches.

Which sizes are included and how do I use them with my tools?

The kit includes a 7/8" (22mm) oxygen sensor socket in both 3/8" and 1/2" drive formats plus two 7/8" 3/8"-drive vacuum switch sockets and a thread chaser. Use the 3/8" drive for tighter access and the 1/2" drive when extra leverage is needed with a breaker bar.

• One 7/8" x 3/8" drive oxygen sensor socket for compact spaces.
• One 7/8" x 1/2" drive oxygen sensor socket for high-torque removal.
• Two 7/8" 3/8" drive vacuum switch sockets for dash and engine vacuum components.
• Thread chaser cleans sensor threads before installation to ensure proper seating.

This set is made to be used with standard ratchets, breaker bars and extensions; always apply penetrating oil and moderate force when removing seized sensors to protect the tool and the sensor port.

Who is this for? This A ABIGAIL set suits home mechanics who perform exhaust and emissions service, mobile technicians needing a compact sensor toolkit, and professional shops that want a reliable, rust-resistant set for routine O2 sensor and vacuum switch work. It’s especially useful when wiring can’t be disconnected or when access is limited, offering a balance of fit, strength and versatility for a wide range of vehicles.