YCT 7-Piece Oxygen Sensor Socket Kit — Slotted 22/27/29mm Sockets, Chrome-Moly for Tight Spaces & High Torque

This kit collects the common sizes technicians and DIYers need to service oxygen sensors and related threaded components without cutting wiring or fighting tight spaces. Each socket is slotted to clear sensor wiring, finished from chrome-molybdenum steel for strength, and sized to fit 22mm (7/8"), 27mm, and 29mm hex fittings used across a wide range of cars and light trucks. The set mixes 1/2" and 3/8" drive pieces, including deep and offset styles for stubborn or recessed fittings.

Which sizes are included and what does each socket do?

The seven sockets cover the typical O2 sensor hex sizes plus oil pressure senders and vacuum/pressure switches. You get both long and short slotted 22mm oxygen sensor sockets and larger 27mm and 29mm sockets for pressure senders on older GM models and other vehicles.

• 1 × 1/2" drive × 27mm (12-point) oil pressure sending unit socket
• 1 × 1/2" drive × 29mm (6-point) pressure/vacuum switch socket with slot
• 1 × 1/2" drive × 7/8" (22mm) long slotted O2 sensor socket
• 2 × 3/8" drive × 7/8" (22mm) slotted vacuum switch sockets
• 1 × 3/8" drive deep 1-1/16" & 1" (27mm) oil pressure socket for deep switches
• 1 × 3/8" drive × 7/8" (22mm) short slotted O2 sensor socket

How do slotted sockets make O2 sensor jobs easier?

Slotted sockets free the sensor wiring so you can turn the hex without disconnecting or cutting the harness, saving time and preventing wiring damage. Offset and compact profiles allow access in tight headers or exhaust manifolds where a regular socket or wrench won't fit.

• Slots let the sensor lead remain attached during removal
• Offset design improves leverage in cramped engine bays
• Deep sockets reach recessed senders up to 2-5/8" deep
• Use with standard 3/8" or 1/2" drive ratchets and extensions

What materials and construction should I expect?

This set is manufactured from chrome-molybdenum alloy for high torque capacity and wear resistance, with precision casting to ensure snug fit on O2 sensor hexes and sender nuts. The finish resists corrosion and the sockets withstand typical removal torque when sensors are seized from heat and road exposure.

• Chrome molybdenum steel construction for durability
• Precision 6-point and 12-point profiles for secure grip
• Corrosion-resistant finish for long service life
• Designed to handle high torque without rounding fasteners

Can a hobbyist use this set safely and effectively?

Yes — even if you have limited mechanic experience, these sockets simplify oxygen sensor and sender replacement by preventing wire damage and improving access. Follow vehicle service guidelines, apply penetrating lubricant to seized fittings, and use controlled force to avoid breaking sensor studs.

• Suitable for DIYers and professional mechanics
• Recommended to use penetrating oil on corroded fittings
• Works with common ratchets and breaker bars for leverage
• Customer support available for product questions

Who is this for: The YCT 7-piece kit is aimed at automotive technicians, independent mechanics, and do-it-yourself vehicle owners who regularly replace O2 sensors, oil pressure senders, or vacuum/pressure switches. It suits anyone needing slotted, deep, and offset socket options to work in tight engine or exhaust locations across most makes and models.