DENSO is a leading global manufacturer of advanced automotive technology, systems, and components, as well as industrial robotics and data capture devices.
DENSO Corporation is one of the world's largest automotive suppliers, renowned for developing advanced technology, systems, and components for major automakers. Headquartered in Kariya, Japan, the company produces a wide range of products including powertrain control systems, thermal systems, electrification components, and advanced safety electronics. In the consumer aftermarket, DENSO is widely recognized for its high-quality spark plugs, oxygen sensors, alternators, starters, and air conditioning compressors.
Beyond the automotive sector, DENSO operates through subsidiaries such as DENSO WAVE, which invented the QR Code and manufactures industrial robots, barcode scanners, and handheld terminals. The brand focuses on quality, reliability, and innovation, supplying both original equipment manufacturers (OEMs) and the global replacement parts market.
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Many DENSO automotive parts are Original Equipment (OE) components and do not come with separate user manuals. For installation and specifications, refer to your vehicle's service manual. Aftermarket parts like spark plugs may have instructions on the packaging.
DENSO advises consumers to contact the retailer, dealer, or distributor where the product was originally purchased to initiate a warranty claim, as they generally do not handle direct consumer claims.
DENSO spark plugs are often pre-gapped, but it is recommended to check the gap against your vehicle manufacturer's specifications before installation. Do not alter the gap for Iridium Power, Iridium TT, or Iridium Racing plugs as this may damage the electrode.
Manuals and software for DENSO WAVE products, such as barcode scanners and handy terminals, can be downloaded from the official DENSO WAVE website under the support or download section.