Meet the NGK V Power Spark Plug LFR5A-11—a purpose-built ignition component designed to deliver dependable starts, steady idle, and consistent performance in engines that require a 14 mm threaded plug with a precise 1.25 mm pitch. Built for durability and reliability, this boxed, single-socket spark plug keeps your equipment running smoothly when it matters most.
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Plug number: LFR5A-11 (V Power series)
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Gap: pre-set at 0.04
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Thread diameter: 14 mm
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Thread pitch: 1.25 mm
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Reach: 26.5 mm
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Hex size: 5/8 in
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Packaging: boxed, 1 plug per package
The V Power design focuses on reliable ignition and efficient combustion, helping engines deliver steady power delivery and improved starting performance across a range of small engines and equipment. With a precise 0.04 gap, this plug is tuned to promote a strong spark event, reduce misfires, and support consistent performance as the engine ages or operates under varying temperatures.
Who benefits most? This plug is ideal for operators and technicians working with equipment that specifies a 14 mm, 1.25 pitch spark plug with a 26.5 mm reach—think compact machines, lawn and garden tools, generators, and other small engines that rely on the LFR5A-11 specification from NGK’s V Power lineup.
Practical installation tips — confirm your engine requires LFR5A-11, inspect the old plug for wear or fouling, and clean the thread area before installation. After replacing, torque to your engine’s recommended specification and re-check the gap to ensure it remains at 0.04 for optimal ignition reliability.
