{"product_id":"ngk-standard-spark-plug-box-of-4-lkar7c-9","title":"NGK LKAR7C-9 Standard Nickel Spark Plugs – Set of 4","description":"\u003cp\u003eThis package includes four NGK LKAR7C-9 standard nickel spark plugs for engines specifically requiring NGK stock number 93961. Each resistor-type plug features a solid copper core, nickel-alloy electrodes, a projected insulator design, and a factory gap of approximately 0.9 mm.\u003c\/p\u003e\n\n\u003cp\u003eLKAR7C-9 is primarily associated with select Mercury Marine outboard and racing-engine applications. NGK does not currently associate this plug with a specific automotive application, so buyers should verify the required spark-plug number using the engine manufacturer’s service information before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNGK standard nickel spark-plug construction\u003c\/li\u003e\n  \u003cli\u003eSolid copper core supports heat dissipation and electrical conductivity\u003c\/li\u003e\n  \u003cli\u003eNickel-alloy center and ground electrodes\u003c\/li\u003e\n  \u003cli\u003eProjected insulator configuration\u003c\/li\u003e\n  \u003cli\u003eResistor-type design helps suppress electrical interference\u003c\/li\u003e\n  \u003cli\u003eHigh-grade ceramic insulator\u003c\/li\u003e\n  \u003cli\u003eTrivalent metal-plated shell helps resist corrosion\u003c\/li\u003e\n  \u003cli\u003eCold-rolled threads help reduce the risk of cylinder-head thread damage\u003c\/li\u003e\n  \u003cli\u003eFlat gasket seat with sealing washer\u003c\/li\u003e\n  \u003cli\u003eSolid, non-removable terminal\u003c\/li\u003e\n  \u003cli\u003eNGK plug number LKAR7C-9\u003c\/li\u003e\n  \u003cli\u003eNGK stock number 93961\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePlug type: Standard resistor spark plug\u003c\/li\u003e\n  \u003cli\u003eCenter-electrode material: Nickel alloy with copper core\u003c\/li\u003e\n  \u003cli\u003eGround-electrode material: Nickel alloy\u003c\/li\u003e\n  \u003cli\u003eGround-electrode quantity: 1\u003c\/li\u003e\n  \u003cli\u003eNGK heat range: 7\u003c\/li\u003e\n  \u003cli\u003eThread diameter: 12 mm\u003c\/li\u003e\n  \u003cli\u003eThread pitch: 1.25 mm\u003c\/li\u003e\n  \u003cli\u003eThread reach: 26.5 mm\u003c\/li\u003e\n  \u003cli\u003eHex size: 14 mm or 9\/16 inch\u003c\/li\u003e\n  \u003cli\u003eSeat type: Flat gasket seat\u003c\/li\u003e\n  \u003cli\u003eFactory gap: Approximately 0.9 mm or 0.035–0.036 inch\u003c\/li\u003e\n  \u003cli\u003eResistance: Approximately 5,000 ohms\u003c\/li\u003e\n  \u003cli\u003eTerminal type: Solid and non-removable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplication Information\u003c\/h3\u003e\n\n\u003cp\u003eUse only in engines that specifically call for NGK LKAR7C-9, stock number 93961, or a confirmed equivalent manufacturer number. This plug is commonly cataloged for select Mercury Marine outboard and racing-engine applications, including certain 4.6L V8 configurations.\u003c\/p\u003e\n\n\u003cp\u003eKnown Mercury applications may include select 250R, 300R, 450R, and 500R engines. Application varies by engine model, production date, calibration, and serial number. Confirm the required plug number directly from the Mercury service manual, parts catalog, or existing spark plug before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePackage quantity notice:\u003c\/strong\u003e This listing contains four spark plugs. A V6 engine typically requires six plugs, while a V8 engine typically requires eight. Purchase two sets if eight LKAR7C-9 plugs are required. This four-plug set may also service a four-cylinder engine only when that engine specifically requires LKAR7C-9.\u003c\/p\u003e\n\n\u003ch3\u003eCross-Reference Information\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNGK plug number: LKAR7C-9\u003c\/li\u003e\n  \u003cli\u003eNGK stock number: 93961\u003c\/li\u003e\n  \u003cli\u003eCommon Mercury reference: 8M0135348\u003c\/li\u003e\n  \u003cli\u003eCommon Mercury reference: 8M0204737\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eCross-reference numbers are provided only as a shopping aid. Match all specifications and confirm the current manufacturer part number for the exact engine before installation.\u003c\/p\u003e\n\n\u003ch3\u003eRecommended Use\u003c\/h3\u003e\n\n\u003cp\u003eRecommended as a standard replacement for worn, fouled, damaged, or service-due LKAR7C-9 spark plugs. Spark plugs should be inspected and replaced at the interval specified by the engine manufacturer.\u003c\/p\u003e\n\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e4 NGK LKAR7C-9 standard nickel spark plugs\u003c\/li\u003e\n  \u003cli\u003eNGK stock number\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":71312546005245,"sku":"NGK93961","price":33.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1935\/9157\/files\/6930590ab204a3cec4d043d8ea9d9a08.jpg?v=1789535461","url":"https:\/\/www.velocityshop.com\/products\/ngk-standard-spark-plug-box-of-4-lkar7c-9","provider":"Velocity Shop","version":"1.0","type":"link"}