MateAuto 16-Piece Oxygen Sensor Socket Set with Thread Chasers — Slotted, Heat-Treated CR-MO/CR-V

MateAuto's 16-piece oxygen sensor socket set is a complete, professional-grade kit for removing and installing O2 sensors and related components in tight engine bays.

This compact kit combines purpose-built sockets, thread chasers and extensions so you can tackle oxygen sensors, oil pressure units, fuel injectors and thermal switches across a wide range of European vehicles. Every tool is laser-etched for fast size recognition and forged from heat-treated CR-MO/CR-V steel for strength and corrosion resistance. The included plastic carrying case keeps the tools organized and protected between jobs.

What sizes and components are included in this set?

The set contains 16 pieces that cover common O2 sensor and related fastener sizes for European cars and many other makes. Sockets fit both 1/2" and 3/8" drive tools, and the set includes thread chasers and adapters for a complete repair workflow.

• Ten sockets: 22mm, 27mm, 29mm, 7/8", 1", 1-1/16" across 1/2" and 3/8" drives
• Thread chasers: M12×1.25 and M18×1.5
• Extensions: 3" and 6" plus a 1/2" universal joint and 3/8" to 1/2" adapter
• Laser-etched size markings for quick identification

How does this kit help when working in tight engine compartments?

Designed with obstructed-access repairs in mind, the kit’s slotted sockets and extensions allow you to remove wiring-connected sensors without disconnecting fragile harnesses. Universal joint and dual extensions reach sensors recessed behind manifolds or brackets.

• Slotted sockets allow the sensor harness to remain connected during removal
• 3" and 6" extensions reach deep-set sensors
• Universal joint provides angular access where straight extension cannot
• Multiple drive sizes fit standard ratchets or breaker bars (not included)

Are these tools durable enough for professional use?

Yes—each tool is forged from heat-treated chrome-molybdenum and chrome-vanadium alloys and finished with a corrosion-resistant coating to resist wear under frequent use. The 6- and 12-point openings give secure contact with fasteners to reduce rounding and slippage.

• Heat-treated CR-MO and CR-V for high strength and toughness
• Corrosion-resistant finish extends service life
• 6- and 12-point socket profiles for improved grip on fasteners
• Sturdy plastic carrying case for organized storage and transport

What vehicles and tasks is this set best suited for?

This socket set is optimized for European models such as Mercedes, VW, Audi and BMW but is versatile enough for many domestic and import makes. It’s ideal for technicians and DIYers performing O2 sensor replacement, oil pressure sensor service, injector work or thermal switch maintenance.

• Commonly used on European cars with hard-to-reach sensors
• Useful for O2 sensors, oil pressure units, fuel injectors and thermal switches
• Adapters and drives support standard mechanic toolboxes and ratchets
• Thread chasers help restore sensor threads after cross-threading or corrosion

Who is this for? If you’re a professional mechanic or a hands-on vehicle owner who regularly services European or tight-engine applications, this MateAuto 16-piece oxygen sensor socket set delivers the sizes, reach and durability you need. It’s a practical addition to a home garage or shop when you want a single compact kit that handles sensor removal and installation without repeated tool hunting.