DENSO Introduces Innovative Iridium TT™ Spark Plug

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March 19, 2015

Delivers ultimate endurance and all-around performance – Now Available in Mexico

LONG BEACH, Calif. – DENSO announces a new line of spark plugs engineered to last more than 100,000 miles on the road, and provide more power and better fuel economy than any other spark plug. The new DENSO Iridium TT spark plug, with its unique Twin-Tip Technology and patented design, delivers far less obstruction to the spark than standard plugs, allowing an omni-directional expansion of the ignition flame. Small electrode tips mean less spark interference and more complete combustion.

“With iridium overtaking platinum spark plugs as the new OEM standard, we knew the aftermarket needed a top-performing, high-value iridium replacement plug,” says Fran Labun, vice president, Sales Group, DENSO Products and Services Americas, Inc. “The new DENSO Iridium TT spark plug is an innovative design that helps ensure complete combustion, even after many thousands of miles of use.”

The DENSO Iridium TT spark plug has the world's smallest center electrode, a 0.4 mm needle tip, composed of a patented iridium-rhodium alloy that offers exceptional protection against corrosion and high-temperature oxidation. The ground electrode also has a needle tip – a 0.7 mm platinum needle that’s designed to resist oxidation and wear. These small electrode tips create less interference for the ignition flame to expand resulting in a more complete combustion.

The Iridium TT’s Twin Tips allow the spark plug to create the largest spark concentration and explosion, which translates into more power and superior fuel economy than other spark plugs.

A wide variety of heat ranges is not necessary to cover the vast majority of North American vehicles. In fact, just 19 DENSO part numbers will cover 92 percent of vehicles on the road today. “That’s good news for everyone in the aftermarket, from Wholesale Distributor (W/Ds) and jobbers to installers,” says Labun.

As a global leader in ignition technology, DENSO is in the forefront of spark plug innovation. For more details, visit

About DENSO Products and Services Americas:

DENSO Products and Services Americas Inc. is an automotive components sales, remanufacturing and distribution company that employs 420 people in Long Beach, Calif., and Murrieta, Calif. The company’s product line includes heavy-duty and automotive alternators and starters, oil, cabin and air filters, spark plugs, AC compressors, oxygen sensors, ignition wires, fuel pumps, fuel injectors and wiper blades. DENSO Products and Services Americas supplies parts for original equipment

service dealers and for the independent aftermarket service centers and retailers. In addition, the company distributes heavy-duty diesel and electrical components, portable commercial air-conditioning units and industrial robots. For more information, go to

About DENSO:

DENSO Corp., headquartered in Kariya, Aichi prefecture, Japan, is a leading global automotive supplier of advanced technology, systems and components in the areas of thermal, powertrain control, electronics, information and safety. Its customers include all the world's major carmakers. Worldwide, the company has more than 200 subsidiaries and affiliates in 38 countries and regions (including Japan) and employs nearly 140,000 people. Consolidated global sales for the fiscal year ending March 31, 2014, totaled US$39.8 billion. Last fiscal year, DENSO spent 9.0 percent of its global consolidated sales on research and development. DENSO common stock is traded on the Tokyo and Nagoya stock exchanges. For more information, go to, or visit our media website at

About DENSO in North America:

Currently, in North America, DENSO employs more than 17,000 people at 33 consolidated companies and affiliates. Of these, 28 are manufacturing facilities located in the U.S., Canada and Mexico. In the U.S. alone, DENSO employs more than 14,000 people in California, Alabama, Michigan, North Carolina, South Carolina, Tennessee, Kentucky, Georgia, Iowa, Ohio, Arkansas and Pennsylvania. DENSO’s North American consolidated sales totaled US$7.9 billion for the fiscal year ending March 31, 2014.

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