NGK 6490 Spark Plug

NGK Standard Spark Plug for Volvo Applications

NGK Standard Spark Plug 6490 is an OE-style ignition component built for specific Volvo applications that call for a 14 mm, flat-seat plug with a 0.024 in pre-gap and 5 k? resistance. It is a practical choice for drivers servicing Volvo C30, S40, and V50 models that require consistent secondary ignition performance.

Key Features

• NGK Standard Spark Plug line for OE-style replacement service
• Part number 6490, also identified as LFR6D
• Copper center electrode core with nickel center electrode tip material
• Nickel ground electrode core material with standard ground electrode tip design
• 3 ground electrodes and a flat seat design
• 14.00 mm thread diameter, 26.5 reach, and 5/8 hex size
• Manufacturer heat range 6 with a non-removable nut terminal
• Pre-gapped at .024 in per listed specification

Product Details

NGK has long supplied original equipment spark plugs for domestic and import vehicles in North America, and the Standard Spark Plug line reflects that OE-focused approach. This spark plug is engineered around the listed Volvo fitments and the specified ignition requirements, making NGK 6490 a direct-service option for routine tune-up work on Volvo C30, Volvo S40, and Volvo V50 models. The combination of copper and nickel electrode materials supports stable spark delivery in applications that call for a conventional plug design.

This part cross-references BBB Industries 6490 and Genu 30650843 for the same application.

Vehicle Fitment

• Fits 2010 Volvo C30, N/A; Gap 0.028"; Actual OE Manufacturer; 45,000 mi OE Mfr Recommended Service Interval; Standard Spark Plug
• Fits 2007-2010 Volvo S40, N/A; Gap 0.028"; Actual OE Manufacturer; 75,000 mi OE Mfr Recommended Service Interval; Standard Spark Plug
• Fits 2007-2010 Volvo V50, N/A; Gap 0.028"; Actual OE Manufacturer; 75,000 mi OE Mfr Recommended Service Interval; Standard Spark Plug
• Fits 2007-2009 Volvo C30, N/A; 0.028 inch gap suitable for OEM application.; Standard Spark Plug
• Fits 2005-2006 Volvo S40, N/A; Gap 0.028"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Standard Spark Plug
• Fits 2005-2006 Volvo V50, N/A; Gap 0.028"; Actual OE Manufacturer; 60,000 mi OE Mfr Recommended Service Interval; Standard Spark Plug
• Fits 2004 Volvo S40, N/A; Gap 0.028"; Actual OE Manufacturer; 45,000 mi OE Mfr Recommended Service Interval; Standard Spark Plug

Installation Notes

Verify the engine’s required gap, thread diameter, reach, seat type, and terminal style before installation. Use the listed 0.024 in pre-gap as a starting point only when it matches the vehicle specification, and confirm the Volvo application notes for the exact service interval and OE requirements. Thread the plug by hand first to avoid cross-threading, then torque to the vehicle manufacturer’s specification.

Quality Assurance

NGK is a major OE spark plug supplier with more than 80 years of automotive experience and broad coverage across automotive, motorcycle, marine, and small engine applications. The brand’s North American manufacturing, inventory, and distribution network supports consistent product availability and OE-standard production practices.