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DENSO Iridium Tough Spark Plug [VK20Y] 5620

DENSO Iridium Tough Spark Plug [VK20Y] 5620


DENSO Iridium Spark Plug VK20Y - Single Plug

Single Plug


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DENSO Iridium Tough Spark Plug [VK20Y] 5620

General Details:

Diameter [mm]14
Spanner Size16
Tightening Torque [Nm]22
Weight [g]43
Country-spec. modelJapan
Spark Plug1 - Earthed Electrode
Thread Length [mm]19

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Please use our DENSO Spark Plug Lookup or contact us to find the right spark plug for your car

DENSO has been setting the standard for spark plug technology since 1959. They develop all of their ranges in-house, and manufacture them in their own ISO9000 certified factories worldwide - with 'zero defects' as standard. They also provide this outstanding OE quality to the aftermarket. Including Standard, Platinum and Iridium, DENSO Spark Plugs cover a complete range of continually updated references. Guaranteeing optimum engine performance, choose DENSO Spark Plugs for every automotive, motorcycle, marine and small engine application.

Iridium Tough Spark Plugs combine all the performance advantages of DENSO's Iridium Power with long-life Platinum technology, producing an extended lifetime of up to 100,000 km. This extra durability offers motorists a longer service interval and reduced plug maintenance. DENSO's Iridium Tough range also reduces vehicle emissions and improves fuel economy by up to 5% compared with most standard spark plugs.

Using 0.4mm diameter iridium centre electrode, Iridium Tough displays superb ignitability and low required voltage, drawing out better performance from your car - increased acceleration, accelerator response, operational stability, and lower fuel consumption. On you day-to-day drive it will realise a comfortable and long drive in addition to low fuel consumption. Iridium Tough is recommended for the following driver:

  • Long Distance/Heavy Use
    Because of its long lifetime this plug is recommended to drivers for long driving. By greatly minimising electrode wear, DENSO improved mileage and extended the plug's useful life. Longevity provides you with peace of mind and safety when using Iridium Tough.
  • Mileage
    If you use your car on a daily basis, you may be concerned about fuel consumption. Iridium Tough is one solution.

Spark Plug Health Check

Use Spark Plugs To Check Your Engine Health
Read More

Heat Ranges Explained

Learn what a spark plugs heat range means, and how it can effect your engine
Read More

Heat Cross Reference

Use our spark plug heat range cross reference table
Cross Reference Heat Range


  • Improved cold-starting
  • More efficient fuel consumption
  • Better engine performance and acceleration
  • Smoother idling performance and throttle response
  • Original equipment quality now available to the aftermarket
  • Plugs available for all applications
  • Lower required voltage and high ignitability
  • Suitable for high response driving

Technical Information:

Tech Data:

  • Thread Ø: 14mm
  • Thread Reach: 19.0mm
  • Hex Size:16.0mm
  • Heat Range: 20
  • Plug Type: 0.4mm Iridium centre electrode; platinum tipped ground electrode; 0.8mm gap

PDF Downloads:

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We say...

"A premium, high-performance spark plug with extra-long life"