DAYUAN Oxygen Sensor & Oil Pressure Socket Set 21pc — 7/8" + Metric 6- and 12-Point, Chrome Vanadium Case

DAYUAN's 21-piece oxygen sensor socket set is a complete, heavy-duty kit designed to remove and install oxygen sensors, oil pressure sending units, and vacuum switches across a wide range of vehicles.

This professional set includes extended, deep, offset, low-profile and universal 7/8" sockets plus a broad range of metric sizes in both 6-point and 12-point configurations to fit European, Asian and American makes. Crafted from chrome vanadium steel with a protective black-oxide finish and supplied in a molded plastic case, the kit keeps each socket organized and protected for workshop or mobile use.

Which vehicles and sensors will these sockets work on?

The set covers many common oxygen sensor and oil pressure sending unit fittings used by manufacturers such as Audi, VW, Mercedes-Benz, Renault, Honda, Nissan, Mazda and more. Metric sockets in 6- and 12-point formats plus several 7/8" specialty sockets let you tackle heated sensors, low-clearance sensors and vacuum switch fittings.

• Includes specific sizes matched to brands: e.g., 17mm for Renault, 19mm for VW/Audi, 30mm for Mercedes-Benz.
• 7/8" variants accommodate heated sensors, connectors and tight engine bay locations.
• Long and extra-long lengths reach recessed sensors on manifolds and exhaust pipes.

How does the set handle tight spaces and connector wiring?

Specialty sockets in this kit were designed for low-clearance and wired sensors: there are offset and slotted 7/8" sockets and a short low-profile option that lets you remove sensors without cutting wires or connectors. The universal and vacuum switch sockets further reduce the need for adaptor work or improvised tools.

• Offset 7/8" sockets allow access around wiring and brackets.
• Slotted heated-sensor socket accepts the sensor pigtail while turning.
• Low-profile and deep options suit both cramped engine bays and recessed mounts.

Are these sockets durable and safe to use with impact or hand tools?

Manufactured from chrome vanadium steel and finished with black oxide, each socket balances strength and corrosion resistance for frequent workshop use. The 6-point and 12-point designs reduce rounding on sensor hexes, while reinforced socket bodies resist deformation under torque.

• Chrome vanadium construction for sustained strength and wear resistance.
• Black-oxide finish helps resist rust and keeps sockets functioning longer.
• Precision-fit 6pt/12pt profiles minimize slippage and protect sensor flats.

Who this kit is for: DIY mechanics, home enthusiasts and professional technicians who service exhaust sensors, oil pressure sending units and vacuum switches will benefit from this comprehensive set. It’s especially useful if you regularly work on varied makes and models and need durable, organized tools that reach recessed fittings and preserve sensor connectors.