NGK 90083 Spark Plug

NGK Laser Iridium Spark Plug 90083

NGK 90083 is a Laser Iridium spark plug built for precise ignition performance in a range of Mazda applications. It uses an iridium center electrode tip, a copper core, and a tapered seat to support consistent combustion and reliable service in everyday driving.

Laser Iridium Design

The Laser Iridium Spark Plug line combines a fine iridium center electrode tip with a standard ground electrode layout for stable spark delivery and efficient ignition. This NGK spark plug features a 0.052 in. pre-gap, 5 k? resistance, 14 mm thread diameter, 5/8 in. hex, and a 25.00 mm reach. The non-removable nut terminal and standard ground configuration match OE-style service requirements for many Mazda engines.

• Iridium center electrode tip for durable spark performance
• Copper core construction for heat transfer support
• Tapered seat design for OE-style fitment
• Pre-gapped to 0.052 in. for listed applications
• 5 k? resistance for ignition system compatibility
• NGK part number 90083 / LTR5BI-13

Vehicle Fitment

• Fits 2006-2013 Mazda 3, N/A
• Fits 2012-2013 Mazda 3, N/A, Non-SkyActiv Eng.; Actual OE Manufacturer; 75,000 mi OE Mfr Recommended Service Interval
• Fits 2009 Mazda 3 Sport, N/A, Actual OE Manufacturer
• Fits 2010-2013 Mazda 3 Sport, N/A
• Fits 2011-2013 Mazda 3 Sport, N/A, Non-SkyActiv Eng.; Actual OE Manufacturer; 75,000 mi OE Mfr Recommended Service Interval
• Fits 2006-2013 Mazda 6, N/A
• Fits 2008-2010 Mazda 5, N/A
• Fits 2012-2017 Mazda 5, N/A
• Fits 2010-2012 Mazda CX-7, N/A
• Fits 2009-2010 Mazda Tribute, N/A
• Fits 2011 Mazda Tribute, N/A

Common Replacement Uses

• Engine misfire caused by worn spark plug electrodes
• Hard starting or extended crank conditions
• Rough idle and inconsistent combustion
• Reduced fuel economy from degraded ignition performance
• Maintenance replacement at the OE service interval for Mazda 3, Mazda 6, Mazda 5, CX-7, and Tribute models

Installation Notes

Verify the listed fitment before installation and confirm the plug gap matches the application notes. Use the correct torque specification for the tapered seat design and inspect ignition coils, boots, and wires during service. For Mazda 3, Mazda 6, Mazda 5, CX-7, and Tribute applications, follow the vehicle service manual and replace plugs at the recommended interval when applicable.

Quality Assurance

NGK is a long-established OE spark plug supplier with broad coverage across domestic and import vehicles in North America. Part number 90083 is built to OE-style standards for durability and consistent ignition performance, and it cross-references DENSO Auto Parts 4718 for the same application.