Prokomon Oxygen Sensor Socket Set 10pc 7/8" (22mm) 3/8" Drive Black Oxide Side-Slot

The Prokomon 10pcs Oxygen Sensor Socket Set is a durable, 6-point 7/8" (22mm) socket collection designed to remove and install oxygen sensors while leaving wiring harnesses intact.

This tool kit gives technicians and DIYers a practical, corrosion-resistant solution for loosening and tightening oxygen (O2) sensors and hex vacuum switches. Each socket is forged from heat-treated chrome vanadium steel, finished with black oxide for added rust protection, and shaped to clear sensor wiring with an 8mm x 64mm side slot. The set is sized for common automotive oxygen sensors and works with 3/8" drive tools, making it a versatile addition to any automotive toolbox.

How does this socket set handle stuck or corroded oxygen sensors?

The sockets are built from heat-treated chrome vanadium steel that resists bending under high torque, and the black oxide finish reduces surface corrosion so sockets remain serviceable over time. The 6-point profile gives firm contact with the sensor hex to minimize rounding when using breaker bars or ratchets.

• Heat-treated chrome vanadium construction for strength
• Black oxide coating to slow rust and corrosion
• 6-point design reduces slippage on sensor hex nuts
• Compatible with breaker bars for extra leverage

Can I remove sensors with the wiring harness still attached?

Yes — the sockets feature an 8mm x 64mm side cutout that allows the sensor wiring to pass through while you turn the tool, so you don’t have to disconnect or stretch fragile leads. The low-profile and offset shape also helps reach sensors in tight engine bays.

• Side slot accepts wiring harness without disconnecting
• Offset, compact geometry for confined spaces
• Lengths sized to clear surrounding components
• Works with common sensor placements on many vehicles

What sizes and drive interfaces are included, and what do they fit?

The collection centers on the 7/8" (22mm) hex size common to most oxygen sensors, with a 3/8" square drive interface that mates with standard ratchets and extension bars. The set’s 3-1/10" (80mm) length balances reach and torque for typical O2 sensor locations.

• 7/8" (22mm) hex size to fit standard O2 sensors
• 3/8" square drive compatible with ratchets and extensions
• 80mm length for reach without sacrificing strength
• Designed for both removal and installation tasks

How should I use and maintain these sockets for best longevity?

Use the sockets with a properly sized 3/8" ratchet, breaker bar, or 1" wrench as needed, applying steady torque to avoid jerky forces that can damage both the tool and the sensor. After use, clean off grime and store in a dry place; the black oxide finish helps, but occasional light oiling will prevent surface rust.

• Pair with 3/8" ratchets, breaker bars, or 1" wrenches
• Clean debris after jobs and apply light rust-preventative oil
• Avoid excessive impact force on the socket to preserve the hex profile
• Store in a toolbox or organizer to protect the side slot and finish

Who is this for: The Prokomon oxygen sensor socket set is aimed at professional mechanics, mobile technicians, and car owners who perform routine diagnostics and repairs. It’s especially useful for anyone who needs a reliable, purpose-built tool for sensor service on a wide range of passenger vehicles, and for those who prefer to keep sensor wiring intact during removal. If you handle O2 sensor swaps, exhaust repairs, or sensor diagnostics, this set streamlines those jobs with durable, vehicle-friendly design features.