Sale! 1x Denso IT20TT (4714) Iridium TT Spark Plug View larger

1x Denso IT20TT (4714) Iridium TT Spark Plug

DEN_39 x1

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£7.98 tax incl.

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Data sheet

Denso RangeDenso Iridium TT
Denso Part NumberIT20TT
Denso Stock Code4714

More info

Denso Iridium TT Technology

DENSO has been setting the standard for spark plug technology since 1959. They develop all their ranges in-house, and manufacture them in their own QS 9000 and ISO 9000 certified factories worldwide – with ‘zero-defects’ as standard. Denso also provide this outstanding OE quality to the after-market. The patented DENSO TT Spark Plugs are manufactured using Super Ignition Plug (SIP) technology. They deliver superb reliability, lower emissions and excellent fuel economy, and offer a highly consolidated range with a limited number of part numbers.

Still not sure which plugs fit your vehicle?

Click here and input your reg number, select spark plugs and the correct ones will be displayed.

You can also email us your vehicles registation number (UK only) or vehicle details, we can then use our database to confirm fitment and which parts you require.

Features and Benefits

The Iridium TT Twin-Tip Technology delivers far less obstruction to the spark, allowing an omni-directional explosion. The unique design incorporates a 0.4-millimeter Iridium center electrode, and a 0.7-millimeter Platinum ground electrode. This minimizes the quenching effect and results in a more effective, more complete combustion.

Better combustion means more power and better fuel economy, as fuel is burned more efficiently with each piston firing. On a standard traditional spark plug, the large center and ground electrodes increases the “quenching” effect of the explosion, meaning the spark explosion is restricted by the electrodes which are above and below the gap, allowing it to spread to either side, but not grow with full range.

All in all this translates into more power and superior fuel economy than any other plug available today.

DENSO’s patented Twin-Tip technology was first used on original equipment spark plugs for luxury and performance cars. Now, that technology is available to everyone.

0.4-Millimeter Center Electrode

The 0.4-millimeter center electrode has a low required voltage and high ignitability, that means your vehicle experiences less interference to spark growth (quenching), fewer misfires and significantly improved combustion, optimizing power output and fuel economy – getting you further with less fuel.

Developed with DENSO’s own optimized Iridium alloy; this is the smallest mass-produced center electrode available today.

DENSO selected Iridium and engineered it with Rhodium to build the most durable alloy for spark plugs. The patented formula has the highest concentration of Iridium of any spark plug and outperforms in the most severe engine temperatures resisting oxidation and voltage wear for over 100,000 miles.

Did you know? Iridium is a member of the platinum family, and is the most corrosion-resistant metal known on earth.

360-Degree Laser Welding

Precision welding by DENSO’s state-of-the-art 360-degree laser welding technology allows the Iridium TT’s twin tips to deliver omni-directional ignition, contrary to the flat “sandwich” ignition offered by other spark plugs in the market. The superior ignition of the Iridium TT means each spark burns the fuel more efficiently, giving your vehicle more power and better fuel economy.

To provide the best plug in the market, DENSO developed a proprietary 360-degree laser welding process : the result is the highest quality bond that ensures structural support for the Iridium center electrode, which resists wear and oxidation, even in the harshest combustion environments.

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