DAYUAN Oxygen Sensor Socket Set 21-Pc — 22mm Low-Profile O2 Socket, 6- & 12-Point Sockets in Molded Case

DAYUAN's 21-piece Oxygen Sensor Socket Set is a complete mechanic-grade kit for removing and installing O2 sensors, oil pressure sending units, and related engine sensors without damaging fittings.

When you need to extract a stuck oxygen sensor or swap an oil pressure sending unit, having the right sockets prevents rounded hexes and saves time. This DAYUAN set bundles multiple socket styles, sizes, and extensions in a molded case so you can tackle modern tight-access engine bays and older, rusted sensors alike.

What exactly is included and why does each piece matter?

The kit contains 21 tools designed specifically for sensor work: a mix of 6-point and 12-point sensor sockets, a low-profile 7/8" (22mm) O2 socket, extended and reinforced bodies, and useful adaptors and extensions. Each component helps reach confined sensor locations while minimizing slip and rounding.

• 6-point and 12-point sensor sockets for different hex profiles and access angles
• Short 7/8" (22mm) low-profile O2 socket for tight clearances
• Extended and reinforced socket bodies to reach recessed sensors
• Adapters and extensions to pair with ratchets and torque tools

How does this set make removing stuck sensors easier?

The sockets are purpose-built to grip sensor flats and provide full-contact engagement so force transfers to the sensor instead of rounding the nut. Reinforced bodies and chrome vanadium construction resist twisting and wear when you apply higher torque to free corroded fasteners.

• Full-contact 6-point sockets reduce rounding on worn hexes
• Extended lengths let you work past heat shields and brackets
• Black oxide finish helps resist rust and corrosion
• Molded case keeps parts organized and ready for quick use

Which vehicles and sensors will this kit cover?

This set is built for general automotive service and fits a wide range of oxygen sensors, oil pressure sending units, fuel injectors, and thermal switches found across many makes and models. It’s especially useful for late-model cars with tight exhaust manifold clearances and older vehicles with seized sensors.

• Fits common O2 sensors and many oil pressure sending units
• Works with fuel injectors and thermal switch fittings in varied engine bays
• Assists in both passenger cars and light trucks
• Useful for professional shops and DIY maintenance

How is the kit protected and stored between jobs?

All 21 pieces sit in a blow-molded case with precision-sized compartments so each socket stays secure and protected from damage. Organized storage reduces time hunting for the right size and prolongs tool life by preventing contact wear.

• Blow-molded carrying case with labeled slots for each piece
• Compact layout for easy transport in a toolbox or vehicle
• Prevents metal-on-metal contact that causes premature wear
• Case keeps matching adapters and extensions together

Who is this for? Mechanics, fleet technicians, and hands-on vehicle owners who remove or replace oxygen sensors, oil pressure sending units, and similar engine sensors will benefit most from this DAYUAN 21-piece set. If you work with tight engine compartments, frequently service exhaust or fuel systems, or want a durable, organized kit to avoid rounded fasteners, this tool set is designed to make those jobs faster and safer without guessing which socket will fit.