AT-009 Spark Plug Socket Wrench Set

AT-009 Spark Plug Socket Wrench Set

SKU: AT-009

Chrome vanadium steel spark plug socket wrench set with 16mm and 21mm sockets, extension bars and T-handle for automotive engine maintenance.

MOQ:500 sets
Price Range:$1.50 - $6.00 / set
Material:Chrome Vanadium Steel CR-V + ABS TPR Handle
Standard:ISO 9001 / DIN 3120
Size Range:Socket Size 14mm / 16mm / 18mm / 21mm | Drive 3/8\" | Extension 100mm - 250mm
Surface:Chrome Plated / Black Oxide / Nickel Plated
Packing:Blister card / Color box / Plastic case; 3-6 pcs per set
Sample:Sample available within 5 days
Customization:OEM/ODM accepted; custom socket size, handle color, logo branding
Mixed Order:Mixed container orders accepted

Product Details

This spark plug socket wrench set provides everything needed for safe, efficient spark plug replacement in modern automotive engines. The chrome vanadium steel sockets feature thin-wall construction for access to recessed spark plugs in compact engine bays, and the internal rubber retention insert grips the ceramic insulator securely to prevent dropping plugs into deep wells.

Available in the four most common sizes: 14mm, 16mm, 18mm and 21mm to cover Japanese, European, American and motorcycle engines. The included extension bars and T-handle provide the reach and leverage needed for hard-to-access plugs, while the 3/8-inch drive fits standard ratchets and torque wrenches for precise installation torque.

The mirror-chrome finish resists corrosion and cleans easily after exposure to combustion deposits. Essential for auto repair shops, quick-lube centers, motorcycle service departments and DIY enthusiasts performing routine tune-ups and engine diagnostics.

Specifications

Socket Material: Chrome Vanadium Steel CR-V
Handle Material: ABS + TPR / Chrome Vanadium Steel T-bar
Finish: Chrome Plated / Black Oxide / Nickel Plated
Socket Sizes: 14mm / 16mm / 18mm / 21mm (thin-wall)
Drive Size: 3/8" / 1/2"
Socket Type: 6-point with rubber retention insert
Extension Bars: 100mm / 150mm / 250mm
Universal Joint: Optional
Handle Types: T-handle / L-handle / Ratchet handle
Hardness: HRC 42-48
Standard: DIN 3120 / ISO 1174
Application: Gasoline / Diesel / Motorcycle engines
Packing: Blister Card / Plastic Case / Color Box + Carton

FAQ

Why do spark plug sockets have a rubber insert?

The internal rubber sleeve grips the spark plug ceramic insulator securely, allowing removal and installation without dropping the plug into the cylinder head.

What size do I need for my car?

Most Japanese cars use 14mm or 16mm; most European cars use 16mm; many motorcycles use 18mm or 21mm.

Are thin‑wall sockets necessary?

Yes; modern engines with tight spark plug wells require thin‑wall sockets that fit where standard sockets cannot.

Can I use these with a torque wrench?

Yes; the 3/8" drive fits standard torque wrenches for precise spark plug tightening to manufacturer specifications.