NGK LASER IRIDIUM Iridium Spark Plugs DILFR7K9G 91961 Set of 4Pcs

$49.39 Buy It Now or Best Offer
free,30-Day Returns

Seller Store sylvia-3611
(12) 92.9%,

Location: Foshan
Ships to: US,
Item: 296796337682

Return shipping will be paid by:Buyer
Returns Accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Type:Spark Plug
OE/OEM Part Number:91961
Manufacturer Warranty:Lifetime
Material:Platinum
Country/Region of Manufacture:Japan
Fuel Type:Gasoline
Manufacturer Part Number:DILFR7K9G
NGK:NGK

1.Package including Brand: NGKNGK model: 91961 DILFR7K9G Spark plug Number: 4 PCS ※ Must read before purchase ※Our store’s products have very high requirements for car model compatibility. To ensure that the product model can be used, we suggest that you contact online customer service to provide information about the car model and choose the recommended model for you. Thank you! Product Purchase NoticeTo accurately adapt to your car, before purchasing a spark plug, please contact online customer service to provide one of the following two methods to help you match the spark plug model.1?Vehicle identification code2?Basic vehicle informationMainly including:? Engine model; ? Vehicle model number; ? Manufacturing year and month; ? Displacement. 3.Replacement instructions An example of spark plugs not working effectively due to long-term useAfter electrode consumption, it is difficult to spark and cannot start normallyCarbon accumulation, blackening, dissolution, pollution, etc. in the ignition part lead to abnormal combustion of the spark plug (early ignition)? GoodSpark plugs in normal use? Electrode consumptionThe edge loss of the electrode becomes dull, making it difficult to ignite and easy to stall during driving? Smoked blackThe current leaks out through the carbon deposits attached to the ignition part of the spark plug, causing stalling and deteriorating engine performance? SedimentationThe combustion gas attached to the spark plug overheats, causing abnormal combustion (premature ignition)The above situations ?, ?, and ? require timely replacement of spark plugs 4.Recommended mileage for testing and replacing spark plugs automobileLight duty vehiclesmotorcycle15,000-20,000km7,000-10,000km3,000-5,000km According to the different materials and types of spark plugs, the recommended replacement mileage will also vary. At the same time, the service life of spark plugs will also vary depending on the driving conditions of the car, the quality of gasoline, and driving habits, We suggest that you regularly check and replace spark plugs before the engine runs abnormally.(Spark plug models and types are diverse, please match the applicable model for installation) thread diameterInstallation torque18mm35~40N · m (3.5~4.0kgm)14mm25~30N · m (2.5~3.0kgm)12mm15~20N · m (1.5~2.0kgm)10mm10~12N · m (1.0~1.2kgm)8mm8~10N · m (0.8~1.0kgm) The required installation torque varies depending on the diameter of the spark plug thread.Reference: When there is no torque wrench, it can be installed according to the following schematic diagramNGK spark plugs with sealing washers and thread diameters of 18mm and 14mmNewly installed products rotate approximately 1/2-2/3 (180 ° -240 °)Install old products and rotate about 1/12 (30 °)M18 and M14 have no special angles, they are both normal rotation angles. Please use the normal angles shown in the applicable table for installation.NGK spark plug with sealing gasket and thread diameter of 12mmAll new products that have not been installed (except for M12 special angle models) rotate approximately 1/2 (180 °)Installed old products (except for M12 special angle models) and rotated about 1/12 (30 °)The installation method for M12 special angle models is that new products that have not been installed rotate about 1/4 (90 °), while old products that have been installed rotate about 1/8 (45 °)NGK spark plug with sealing gasket and thread diameter of 10mmAll new products that have not been installed (except for M10 special angle models) rotate approximately 1/2 (180 °)NGK spark plug with sealing gasket and thread diameter of 8mmNewly installed products rotate by approximately 1/3 (120 °) Note: It is very important to choose spark plugs with a heat value that is suitable for the engine and usage conditions.When the calorific value is not suitable, the following phenomena usually occur.Heating value and heat dissipation method of spark plugs·Heating value too highThe temperature of the spark plug becomes too low, causing carbon buildup in the ignition part to cause electric leakage and prevent the spark from being ignited.Low calorific valueThe temperature of the spark plug rises too high, leading to abnormal combustion (early ignition), melting of the electrodes of the spark plug, and ultimately causing piston burnout, melting, and so on. 5.Performance improvement Iridium platinum has superior ignition performance and longer service life, and the center electrode uses finer platinum/gold, which can provide stable idle speed; Superior resistance to dirt and damage; Quick start and acceleration; Improve fuel efficiency and reduce emissions.

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