Silverline Deep Spark Plug Socket Set 16mm and 21mm 3/8 inch 244982

Silverline 3/8 inch 16mm and 21mm Deep Spark Plug Socket Set Metric

Barcode: 5055058124326

MPN: 244982

Overview:

3/8 inch Drive 16mm and 21mm Deep Spark Plug Metric Twin Socket Set is designed for safer, easier spark plug removal and installation, supplied are two common spark plug sizes. these deep sockets are made from corrosion-resistant chrome vanadium steel, then hardened and tempered for durability in regular workshop use. Each socket features a rubber insert to help retain the spark plug during removal and protect it from damage, while the chamfered end supports positive location on the plug hex for more confident engagement. Ideal for maintenance work on a wide range of petrol engines using 16mm or 21mm spark plugs.

Key Features

• 2-piece deep spark plug socket set for 3/8 inch drive ratchets

• Includes popular metric sizes: 16mm and 21mm

• Chrome vanadium steel for strength and long service life

• Hardened and tempered for durability under repeated use

• Chrome plated finish helps resist corrosion and wear

• Rubber inserts retain spark plugs and help protect the ceramic body

• Chamfered ends for positive location and easier engagement

Specifications

• Brand: Silverline

• Product Type: Deep Spark Plug Socket Set (Metric)

• MPN: 244982

• Drive Size: 3/8 inch

• Sizes Included: 16mm, 21mm

• Material: Chrome vanadium steel

• Heat Treatment: Hardened and tempered

• Finish: Chrome plated

• Retention: Rubber insert (plug retention and protection)

• End Feature: Chamfered for positive location

Applications

• Removing and installing spark plugs during routine servicing

• Vehicle maintenance and tune-ups in garages and workshops

• DIY spark plug changes on petrol engines using 16mm or 21mm plugs

• Working in deeper plug wells where standard sockets won’t reach

How to Use

• Select the correct socket size (16mm or 21mm) for your spark plug

• Attach the socket to a 3/8 inch drive ratchet/extension as required

• Seat the socket fully over the spark plug hex using the chamfered end

• Turn steadily to loosen and remove the plug, allowing the rubber insert to retain it

• Fit the new plug by hand first to avoid cross-threading, then tighten carefully

• Remove the socket straight off the plug to protect the ceramic insulator

3/8 inch 16mm and 21mm Deep Spark Plug Socket Set – Key FAQs

• What sizes are included in this spark plug socket set?
  The set includes two metric deep sockets: 16mm and 21mm, covering many common spark plug hex sizes.

• What drive size do these sockets use?
  These are 3/8 inch drive spark plug sockets, suitable for use with most standard 3/8 inch ratchets and extensions.

• What is the benefit of the rubber insert?
  The rubber insert helps retain the spark plug during removal and installation, and helps protect the spark plug’s ceramic insulator.

• What material are the sockets made from?
  They’re made from chrome vanadium steel, and are hardened and tempered for strength and durability in regular servicing work.

• Do these sockets resist corrosion?
  Yes. They have a chrome plated finish and corrosion-resistant chrome vanadium construction to help withstand workshop conditions.

• What does the chamfered end help with?
  The chamfered end helps guide the socket onto the spark plug hex for positive location, improving engagement and reducing slipping.