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DENSO L14-U Part Description
Manufacturer
Features & Benefits
- Five-rib ceramic insulator design reduces voltage leakage across the surface
- 18 mm spark plug thread diameter fits compatible cylinder head ports
- Internal resistor element of 5 kΩ reduces electrical interference
- Gasket seat surface forms a seal against the engine cylinder head
- Steel plug shell encloses the electrode and insulator components
- Electrode tip extends into the combustion chamber ignition zone
Denso Spark Plug
The Denso Spark Plug receives ignition voltage from the ignition system and directs it into the combustion chamber. As electrical energy travels through the plug body, it moves toward the center electrode where the ignition spark forms. The ceramic insulator guides this electrical charge toward the firing point while preventing voltage loss across the outer surface. A built-in resistor helps reduce electrical interference created during ignition events. At the firing tip of the Denso L14-U, voltage crosses the electrode gap to ignite the air-fuel mixture.
DENSO L14-U Cross References
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DENSO L14-U Manufacturer Information
For more than 50 years, Denso® has been the leading starter and alternator supplier in the world, keeping the most powerful heavy-duty trucks and trailers operating on and off the highway. In addition to conventional starters, it also offers a wide range of A/C components, sensors, filters, spark plugs, fuel injection components, and other automotive service parts. All Denso® factories are QS9000 and ISO9000 certified with a “zero defects” standard to ensure only the highest level of quality on all Denso products. Founded in 1949, Denso continues to develop and produce premium electrical components and other automotive parts to cater to its customers’ changing heavy-duty truck and trailer needs.
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