NGK Spark Plug CMR6H 3365

Product Information

The spark plug heat range has no relationship to the electrical energy transferred through the spark plug. The heat range of a spark plug is the range in which the plug works well thermally. The heat rating of each NGK spark plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type.

As the air temperature or humidity increases, the air density decreases, requiring a leaner air-fuel mixture. If the air-fuel mixture is too rich, decreased performance and/or carbon fouling can result. There are many external influences that can affect the operating temperature of a spark plug. The following is a brief list to consider in avoiding reduced performance and/or expensive engine damage. Engine Speed and Load Air (atmospheric) pressure and cylinder pressure decrease as altitude increases. As a result, spark plug tip temperature will also decrease.Illustrations may differ slightly from original product and are not assembled, but in boxes for shipment. Spark plugs must provide a path and a location for electrical energy from the ignition coil to create a spark used to ignite the air-fuel mixture. A sufficient amount of voltage must be supplied by the ignition system to spark across the spark plug gap. This is called “electrical performance.”

SKU: PLCMR6HX Category: Spark Plugs Tags: 0000-400-7009, 0000-400-7011, 100, 101, 110, 130, 131, 168652-4, 31916-Z0H-003, 3365, 345FR, 439, 526XP, 531008615, 545, 545FX, 545FXT, 545RX, 545RXT, 550XP, 550XPG, 555, 556, 560XP, 560XPG, 562XP, 562XPG, 574519601, 6778, 90119, A425000040, BG56, BG66, BG86, Bosh, BR200, BR500, BR550, BR600, BR700, BT131, Champion, CMR6H, CMR6H-SLDCAP, CS2252, CS2253, CS2258, CS2260, CS2260WH, FC100, FC110, FC56, FC70, FC90, FC95, FR130, FR410, FR460, FR480, FS, FS100, FS110, FS111, FS130, FS131, FS240, FS25, FS260, FS310, FS311, FS360, FS40, fs410, FS460, FS460 C-EM, FS50, FS56, FS65, FS70, FS87, FS89, FS90, FS91, FS94, GX25, HL100, HL90, HL91, HL94, HL95, Honda, HQT-3, HS46, HS46 C-E, HS56, HS56 C-E, HS81, HS82, HS86, HS87, HT100, HT101, HT102, HT103, HT130, HT131, HT132, HT133, HT56, Husqvarna, Jonsered, KM100, KM110, KM111, KM130, KM131, KM56, KM90, KM94, Makita, MS 201 T, MS 201 TC, MS150, MS150 C-E, MS170, MS171, MS180, MS181, MS181 C, MS192 C-E, MS193C, MS193T, MS201, MS211, MS211 C, MS231, MS241, MS241 C-M, MS251, MS362, NGK, Plug, RZ7C, SH200, SH56, SH86, Shindaiwa, Spark, SR200, Stihl, T2600, T435, T540XP, USR4AC Related products As a general guideline, among identical spark plug types, the difference in tip temperature from one heat range to the next is approximately 70°C to 100°C. Fouling can occur more easily if the air-fuel mixture is not adjusted to compensate for the altitude. Higher altitude = less air = less fuel. The spark plug firing end temperature must be kept low enough to prevent pre-ignition, but high enough to prevent fouling. This is called “thermal performance,” and is determined by the heat range selected. https://www.ngkntk.com/newsroom/feature/emea/2020-1/counterfeit-spark-plugs-the-ignition-villains-that-could-ruin-your-engine/This spark plug has a resistor that is produced with a glass and carbon mixture, which is fired to ensure superior performance and durability. It has corrugated ribs that prevent flashover and cold rolled threads to inhibit damage to the cylinder head. Features & Benefits: This spark plug has a resistor that is produced with a glass and carbon mixture, which is fired to ensure superior performance and durability. It has corrugated ribs that prevent flashover and cold rolled threads to inhibit damage to the cylinder head. A colder heat range spark plug may be necessary due to the increased cylinder temperature as boost pressure (manifold pressure) and subsequent cylinder pressure and temperature increase. Pre-ignition will dramatically raise the cylinder temperature and pressure, which can melt and hole pistons, burn valves, etc. A misfire occurs when the spark travels the path of least resistance instead of jumping across the gap. Misfires can be caused by the following: