DENSO wins three times at the NHRA Winternationals
In the debut weekend of its re-entry into National Hot Rod Association (NHRA) racing, at the 56th annual Circle K® Winternationals, DENSO Iridium TT Racing spark plugs demonstrated their performance advantage in extreme NHRA racing conditions.
Four-time NHRA Pro Stock world champion Greg Anderson ran a 6.617 second ET (elapsed time) on the quarter mile with a 207.85 mph top speed to take the win in Pro Stock. Both Anderson’s Chevrolet Camaro and the Carmaro of his Summit Racing teammate, Jason Line, whom he beat in the final round were equipped with DENSO spark plugs.
Dan Fletcher took home his 95th career win with a 10.474 second 128.36 mph run in his DENSO sparked Chevrolet COPO Camaro to win Stock Eliminator, while Steve Williams’ TNT Race Cars dragster equipped with DENSO spark plugs took the Super Comp class honors.
A comparison of the spark of a regular plug, left versus a DENSO Tridium TT plug, right
With a 0.4 millimeter Iridium center electrode tip – the world’s smallest – and an all-platinum ground electrode, advanced DENSO Iridium TT (twin tip) spark plugs produce the hottest, most concentrated spark. Iridium is a precious metal that is six times harder and eight times stronger than platinum, and has a 1200º F higher melting point.
A patented 360-degree laser welding process is used to join the Iridium tip, which helps it withstand severe combustion conditions. In addition, the 0.8 millimeter platinum ground electrode is welded on and gapped without any bending, reducing residual stress to help increase durability.
In addition to being a title rights sponsor of 2016 National Hot Rod Association Mello Yello Drag Racing Series, DENSO is also the title sponsor of the 2016 DENSO Iridium TT Spark Plug NHRA Nationals in Las Vegas from April 1-3 2016.
For more information on DENSO Iridium TT plugs, visit
Information and graphics for this article provided by DENSO Products and Services America Inc.