{"product_id":"husqvarna-531008615-ngk-cmr6h-spark-plug-genuine-oem-replacement-spark-plug","title":"Husqvarna 531008615 NGK CMR6H Spark Plug – Genuine OEM Replacement Spark Plug","description":"\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 531008615\u003cbr\u003e\u003cstrong\u003eCategory:\u003c\/strong\u003e Engine Ignition, Tune-Up \u0026amp; Spark Plug Components\u003cbr\u003e\u003cstrong\u003eType:\u003c\/strong\u003e NGK CMR6H Spark Plug – Genuine OEM Replacement Spark Plug\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eThe \u003cstrong\u003eHusqvarna 531008615 NGK CMR6H Spark Plug\u003c\/strong\u003e is a genuine OEM replacement ignition component designed for a wide range of compatible \u003cstrong\u003eHusqvarna chainsaws, string trimmers, brushcutters, hedge trimmers, and other outdoor power equipment\u003c\/strong\u003e. The plug threads directly into the engine cylinder and produces the electrical spark required to ignite the compressed air-fuel mixture inside the combustion chamber.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 531008615\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Husqvarna\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Plug Manufacturer:\u003c\/strong\u003e NGK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Plug Model:\u003c\/strong\u003e CMR6H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Spark Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Description:\u003c\/strong\u003e CMR6H NGK Spark Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Engine Ignition Component\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Creates the Spark Required to Ignite the Air-Fuel Mixture\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Outdoor Power Equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Brand:\u003c\/strong\u003e Husqvarna\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditional OEM Applications:\u003c\/strong\u003e Select Jonsered \/ RedMax \/ Ryobi Equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Diameter:\u003c\/strong\u003e 10 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Reach:\u003c\/strong\u003e 12.7 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHex Size:\u003c\/strong\u003e 16 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat Type:\u003c\/strong\u003e Flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Solid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Configuration:\u003c\/strong\u003e Non-Projected\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNGK Stock Number:\u003c\/strong\u003e 3365\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Location:\u003c\/strong\u003e Engine Cylinder \/ Combustion Chamber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Ignition \/ Engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Type:\u003c\/strong\u003e Direct OEM Replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Status:\u003c\/strong\u003e Genuine Husqvarna OEM Replacement Part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 Spark Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number Reference:\u003c\/strong\u003e 531008615\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Number Format:\u003c\/strong\u003e 531 00 86-15\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 705788542659\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe dimensional and construction specifications above are documented for Husqvarna \u003cstrong\u003e531008615 \/ NGK CMR6H\u003c\/strong\u003e, and genuine-parts references list UPC \u003cstrong\u003e705788542659\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Husqvarna OEM replacement spark plug\u003c\/li\u003e\n\u003cli\u003eManufactured by NGK\u003c\/li\u003e\n\u003cli\u003eGenuine \u003cstrong\u003eCMR6H\u003c\/strong\u003e specification\u003c\/li\u003e\n\u003cli\u003eDesigned for compatible Husqvarna outdoor power equipment\u003c\/li\u003e\n\u003cli\u003eProvides the electrical spark required for combustion\u003c\/li\u003e\n\u003cli\u003eSupports reliable engine starting\u003c\/li\u003e\n\u003cli\u003eHelps maintain consistent ignition\u003c\/li\u003e\n\u003cli\u003eSupports efficient combustion when properly maintained\u003c\/li\u003e\n\u003cli\u003e10 mm threaded design\u003c\/li\u003e\n\u003cli\u003e12.7 mm thread reach\u003c\/li\u003e\n\u003cli\u003e16 mm hex\u003c\/li\u003e\n\u003cli\u003eFlat-seat configuration\u003c\/li\u003e\n\u003cli\u003eSolid terminal\u003c\/li\u003e\n\u003cli\u003eNon-projected tip\u003c\/li\u003e\n\u003cli\u003eSuitable for routine engine tune-ups and maintenance\u003c\/li\u003e\n\u003cli\u003eDirect replacement for multiple earlier Husqvarna spark-plug numbers\u003c\/li\u003e\n\u003cli\u003eUsed across compatible chainsaws, trimmers, brushcutters, hedge trimmers, and other equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eDocumented Husqvarna Applications\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e531008615 CMR6H Spark Plug\u003c\/strong\u003e is documented for numerous Husqvarna models and series, including select:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 224L\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 324HDA55X\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 324LDX\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 324LX\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 324RX\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 439\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 524 Series\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 545\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 545FX\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 545FXT\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 545RX\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 545RXT\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 550 XP\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 550 XP Mark II\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 550 XP G Mark II\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 555\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 560 XP\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 562 XP\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 585\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna 592 XP\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna T435\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna T540 XP\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHusqvarna T540 XP II\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eSelect additional Husqvarna chainsaws\u003c\/li\u003e\n\u003cli\u003eSelect Husqvarna trimmers and brushcutters\u003c\/li\u003e\n\u003cli\u003eSelect Husqvarna hedge trimmers\u003c\/li\u003e\n\u003cli\u003eSelect Husqvarna blowers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCurrent Husqvarna information also identifies the \u003cstrong\u003eNGK CMR6H\u003c\/strong\u003e for equipment including the 550 XP Mark II, T435, T540 XP, 545, 555, 560 XP, 562 XP, 585, 592 XP, 350BT, 580BTS, and numerous other models. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eExact compatibility should always be confirmed using the complete equipment model, product number, engine configuration, and production revision.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eSpark Plug Function\u003c\/h2\u003e\n\u003cp\u003eThe spark plug is one of the central components of a gasoline engine's ignition system.\u003c\/p\u003e\n\u003cp\u003eDuring operation, the \u003cstrong\u003e531008615 CMR6H Spark Plug\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReceives high-voltage electrical energy from the ignition system\u003c\/li\u003e\n\u003cli\u003eProduces an electrical arc across its electrode gap\u003c\/li\u003e\n\u003cli\u003eIgnites the compressed air-fuel mixture\u003c\/li\u003e\n\u003cli\u003eInitiates combustion\u003c\/li\u003e\n\u003cli\u003eSupports repeated combustion cycles as the engine operates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReplacement-parts documentation confirms that \u003cstrong\u003e531008615 screws into the cylinder and creates the electrical arc that ignites the fuel-air mixture inside the combustion chamber\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eSuperseded \u0026amp; Cross-Reference Numbers\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHusqvarna 531008615\u003c\/strong\u003e replaces several earlier Husqvarna spark-plug references, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e514543001\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e5145430-01\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e521233501\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e5212335-01\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e574519601\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e5745196-01\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e590843801\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBoth \u003cstrong\u003e521233501\u003c\/strong\u003e and \u003cstrong\u003e574519601\u003c\/strong\u003e are specifically documented as superseded to \u003cstrong\u003e531008615\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAdditional spark-plug references associated with the CMR6H specification include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNGK CMR6H\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNGK 3365\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHonda 31916-Z0H-003\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBosch USR7AC\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eChampion RZ7C\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways verify equivalency for the specific engine before substituting another manufacturer's plug. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCommon Reasons for Replacement\u003c\/h2\u003e\n\u003cp\u003eReplacement of the \u003cstrong\u003e531008615 NGK CMR6H Spark Plug\u003c\/strong\u003e may be appropriate if the existing plug has:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBecome carbon fouled\u003c\/li\u003e\n\u003cli\u003eDeveloped worn electrodes\u003c\/li\u003e\n\u003cli\u003eBecome oil fouled\u003c\/li\u003e\n\u003cli\u003eDeveloped excessive deposits\u003c\/li\u003e\n\u003cli\u003eSustained physical damage\u003c\/li\u003e\n\u003cli\u003eDeveloped a cracked insulator\u003c\/li\u003e\n\u003cli\u003eBecome corroded\u003c\/li\u003e\n\u003cli\u003eDeveloped an incorrect or excessive electrode gap\u003c\/li\u003e\n\u003cli\u003eReached the manufacturer's recommended maintenance interval\u003c\/li\u003e\n\u003cli\u003eBecome unable to provide reliable ignition\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSpark plugs naturally experience electrode wear because they operate directly within the combustion environment. Carbon buildup, overheating, and contamination can accelerate deterioration. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003ePossible Signs of a Worn Spark Plug\u003c\/h2\u003e\n\u003cp\u003eA worn or fouled spark plug may contribute to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDifficult starting\u003c\/li\u003e\n\u003cli\u003eEngine misfires\u003c\/li\u003e\n\u003cli\u003eRough running\u003c\/li\u003e\n\u003cli\u003eUnstable idle\u003c\/li\u003e\n\u003cli\u003ePoor acceleration\u003c\/li\u003e\n\u003cli\u003eReduced engine power\u003c\/li\u003e\n\u003cli\u003eIntermittent ignition\u003c\/li\u003e\n\u003cli\u003eEngine stalling\u003c\/li\u003e\n\u003cli\u003eIncreased starting attempts\u003c\/li\u003e\n\u003cli\u003ePoor combustion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese symptoms can also result from carburetor, fuel-system, compression, ignition-module, air-filter, or other engine problems, so proper diagnosis is recommended.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eSpark Plug Inspection\u003c\/h2\u003e\n\u003cp\u003eWhen servicing the spark plug, inspect the:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCenter electrode\u003c\/li\u003e\n\u003cli\u003eGround electrode\u003c\/li\u003e\n\u003cli\u003eCeramic insulator\u003c\/li\u003e\n\u003cli\u003eTerminal\u003c\/li\u003e\n\u003cli\u003eThreads\u003c\/li\u003e\n\u003cli\u003eElectrode gap\u003c\/li\u003e\n\u003cli\u003eSpark plug boot\u003c\/li\u003e\n\u003cli\u003eIgnition lead\u003c\/li\u003e\n\u003cli\u003eCylinder-head threads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe condition of the old spark plug can also provide useful information about combustion and engine condition.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cp\u003eA spark plug wrench is required for removal and installation on applicable equipment. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eWhen replacing the spark plug:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eShut off the engine and allow it to cool.\u003c\/li\u003e\n\u003cli\u003eDisconnect the spark plug boot.\u003c\/li\u003e\n\u003cli\u003eClean debris from around the spark plug opening.\u003c\/li\u003e\n\u003cli\u003eRemove the existing plug using the appropriate spark plug wrench.\u003c\/li\u003e\n\u003cli\u003eInspect the old plug for abnormal deposits or damage.\u003c\/li\u003e\n\u003cli\u003eVerify the replacement plug specification and electrode gap.\u003c\/li\u003e\n\u003cli\u003eThread the new plug into the cylinder carefully by hand initially.\u003c\/li\u003e\n\u003cli\u003eTighten it according to the applicable Husqvarna service specification.\u003c\/li\u003e\n\u003cli\u003eReinstall the spark plug boot securely.\u003c\/li\u003e\n\u003cli\u003eStart the engine and verify normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify compatibility with your exact Husqvarna equipment model, product number, serial number, and engine configuration before ordering.\u003c\/li\u003e\n\u003cli\u003eMatch \u003cstrong\u003epart number 531008615\u003c\/strong\u003e or the specified \u003cstrong\u003eNGK CMR6H\u003c\/strong\u003e plug with your equipment documentation.\u003c\/li\u003e\n\u003cli\u003eThe OEM description is \u003cstrong\u003e“CMR6H NGK Spark Plug.”\u003c\/strong\u003e \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe plug has a \u003cstrong\u003e10 mm thread diameter, 12.7 mm thread reach, and 16 mm hex\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe seat type is \u003cstrong\u003eflat\u003c\/strong\u003e and the tip configuration is \u003cstrong\u003enon-projected\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eNGK stock\/reference number for the CMR6H is \u003cstrong\u003e3365\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e521233501\u003c\/strong\u003e is a documented previous Husqvarna part number superseded by 531008615. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e574519601\u003c\/strong\u003e is also documented as superseded by 531008615. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdditional replacement references include \u003cstrong\u003e514543001 and 590843801\u003c\/strong\u003e. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eDo not select a spark plug based solely on thread diameter or physical appearance.\u003c\/li\u003e\n\u003cli\u003eSpark plugs can differ in thread reach, heat range, resistor design, electrode configuration, seat style, and required gap.\u003c\/li\u003e\n\u003cli\u003eUsing an incorrect spark plug can cause poor engine performance and potentially result in engine damage.\u003c\/li\u003e\n\u003cli\u003eAlways use the spark plug type specified for the exact engine.\u003c\/li\u003e\n\u003cli\u003eCheck the electrode gap before installation and adjust only according to the applicable equipment manufacturer's specification.\u003c\/li\u003e\n\u003cli\u003eDo not assume one gap specification applies to every engine using a CMR6H plug.\u003c\/li\u003e\n\u003cli\u003eNever force the spark plug into the cylinder-head threads.\u003c\/li\u003e\n\u003cli\u003eStart installation by hand to reduce the risk of cross-threading.\u003c\/li\u003e\n\u003cli\u003eDo not overtighten the plug.\u003c\/li\u003e\n\u003cli\u003eInspect the spark plug boot and ignition lead for damage while servicing the plug.\u003c\/li\u003e\n\u003cli\u003eKeep dirt and debris from entering the cylinder while the plug is removed.\u003c\/li\u003e\n\u003cli\u003eAllow the engine to cool before removing the spark plug.\u003c\/li\u003e\n\u003cli\u003eA recently operated spark plug, cylinder, and muffler can be extremely hot.\u003c\/li\u003e\n\u003cli\u003eIf a replacement plug quickly becomes fouled again, inspect the engine and fuel system for an underlying problem.\u003c\/li\u003e\n\u003cli\u003eThis listing is for \u003cstrong\u003eone Husqvarna 531008615 NGK CMR6H Spark Plug only\u003c\/strong\u003e unless otherwise specified.\u003c\/li\u003e\n\u003cli\u003eMatch \u003cstrong\u003eHusqvarna 531008615 \/ NGK CMR6H\u003c\/strong\u003e with your equipment's OEM documentation before ordering to ensure proper fitment.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Husqvarna","offers":[{"title":"Default Title","offer_id":53752021713259,"sku":"531008615","price":8.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/531008615.avif?v=1787266755","url":"https:\/\/generalsprayers.com\/products\/husqvarna-531008615-ngk-cmr6h-spark-plug-genuine-oem-replacement-spark-plug","provider":"GeneralSprayers","version":"1.0","type":"link"}