{"product_id":"ngk-tr4-v-power-spark-plugs-box-of-4","title":"NGK V-Power Spark Plug Box of 4 (TR4)","description":"\u003ch4\u003eHigh-Temperature Copper Spark Plugs with V-Groove Electrode for Consistent Ignition\u003c\/h4\u003e\u003cp\u003eThe NGK TR4 is a V-Power copper spark plug engineered for engines that require a projected-tip, resistor-type plug at heat range 4. The V-groove machined into the ground electrode of NGK3754 focuses the spark arc at a precise contact point, reducing firing voltage demands and supporting clean combustion across the RPM range. Each box contains four plugs for a single-bank service on most 4-cylinder applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eV-groove ground electrode focuses the spark arc for consistent ignition\u003c\/li\u003e\n\u003cli\u003eProjected-tip design positions the spark closer to the center of the combustion chamber\u003c\/li\u003e\n\u003cli\u003eCopper core center electrode manages heat dissipation across varying load conditions\u003c\/li\u003e\n\u003cli\u003eResistor construction suppresses electromagnetic interference with vehicle electronics\u003c\/li\u003e\n\u003cli\u003eCorrugated insulator ribs prevent voltage flashover and leakage\u003c\/li\u003e\n\u003cli\u003eTriple-gasket seal prevents combustion gas from escaping past the plug shell\u003c\/li\u003e\n\u003cli\u003eBox of 4 covers a full plug replacement on most 4-cylinder engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number (MPN)\u003c\/td\u003e\n\u003ctd\u003eTR4 \/ NGK3754\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlug Type\u003c\/td\u003e\n\u003ctd\u003eV-Power Copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrode Design\u003c\/td\u003e\n\u003ctd\u003eV-groove ground electrode, projected tip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Material\u003c\/td\u003e\n\u003ctd\u003eCopper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat Range\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistor\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e4 plugs per box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e087295737548\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch4\u003eWhat's Included\u003c\/h4\u003e\u003cul\u003e\u003cli\u003e4x NGK TR4 V-Power Spark Plugs\u003c\/li\u003e\u003c\/ul\u003e\u003ch4\u003eAbout NGK\u003c\/h4\u003e\u003cp\u003eFounded in 1936, NGK Spark Plugs is the global leader in OEM ignition components, supplying spark plugs to virtually every major automaker. Their V-Power line uses a patented V-groove ground electrode to lower required firing voltage and maintain ignition stability across high and low RPM conditions, making it an ideal replacement for applications where iridium or platinum is not required.\u003c\/p\u003e\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\u003cstrong\u003eWhat vehicles use the NGK TR4 spark plug?\u003c\/strong\u003e\u003cp\u003eThe TR4 fits a wide variety of import and domestic engines requiring a projected-tip copper plug at heat range 4. Cross-reference your OEM plug number against NGK3754 using the official NGK fitment guide with your year, make, model, and engine displacement to confirm compatibility before ordering.\u003c\/p\u003e\u003cstrong\u003eWhat does heat range 4 mean on the NGK TR4?\u003c\/strong\u003e\u003cp\u003eHeat range 4 refers to a cooler-running plug relative to a heat range 5 or 6. A lower number dissipates heat from the plug tip faster, which is appropriate for higher-RPM or slightly higher-compression naturally aspirated engines. Using the wrong heat range can cause fouling or pre-ignition.\u003c\/p\u003e\u003cstrong\u003eDoes the NGK TR4 need to be gapped before installation?\u003c\/strong\u003e\u003cp\u003eThe NGK3754 ships from the factory with a preset gap. Verify the gap against your vehicle's specification using a wire feeler gauge before installation, and adjust if your application requires a different setting from the default.\u003c\/p\u003e\u003cstrong\u003eHow long do NGK V-Power copper spark plugs last?\u003c\/strong\u003e\u003cp\u003eNGK copper V-Power plugs are designed for approximately 20,000 to 30,000 mile service intervals under normal operating conditions. Check your vehicle manufacturer's replacement schedule, and inspect plugs periodically if the vehicle sees hard use or oil consumption.\u003c\/p\u003e\u003cstrong\u003eIs the NGK TR4 suitable for a turbocharged application?\u003c\/strong\u003e\u003cp\u003eThe TR4 at heat range 4 is on the cooler side of the standard copper range, which can be acceptable on mildly boosted applications. For heavily modified or high-boost setups, consult your tuner to confirm the correct heat range before selecting a plug.\u003c\/p\u003e\u003cstrong\u003eHow many plugs does one box of NGK3754 cover?\u003c\/strong\u003e\u003cp\u003eEach box contains 4 plugs. A complete 4-cylinder replacement requires 4 plugs, so one box handles a full service. A 6-cylinder requires 6 plugs and a V8 requires 8 plugs, so order additional boxes accordingly for your engine configuration.\u003c\/p\u003e\u003cstrong\u003eIs the NGK TR4 the same as NGK part number 3754?\u003c\/strong\u003e\u003cp\u003eYes. TR4 is the alphanumeric heat range and electrode design designation, and NGK3754 is the numeric catalog reference. Both identifiers refer to the same plug and can be used interchangeably when cross-referencing or ordering.\u003c\/p\u003e\u003cstrong\u003eWill the NGK TR4 fix a rough idle or misfire on my vehicle?\u003c\/strong\u003e\u003cp\u003eIf aged or fouled spark plugs are the cause, fresh NGK3754 V-Power plugs can restore consistent ignition and smooth idle. Always diagnose the root cause of a misfire before replacing plugs, as ignition coils, injectors, and compression issues can produce similar symptoms.\u003c\/p\u003e\u003ch4\u003eInstallation Instructions\u003c\/h4\u003e\u003col\u003e\n\u003cli\u003eAllow the engine to cool completely before beginning spark plug removal.\u003c\/li\u003e\n\u003cli\u003eDisconnect the ignition coil or spark plug wire from the cylinder being serviced.\u003c\/li\u003e\n\u003cli\u003eRemove the existing plug counterclockwise with a spark plug socket and rubber insert.\u003c\/li\u003e\n\u003cli\u003eVerify the gap on each NGK TR4 against your vehicle's specification using a feeler gauge.\u003c\/li\u003e\n\u003cli\u003eThread the plug in by hand until snug, then torque to the manufacturer's specification.\u003c\/li\u003e\n\u003cli\u003eReconnect the coil or wire and repeat for remaining cylinders.\u003c\/li\u003e\n\u003cli\u003eStart the engine and confirm smooth idle without misfire codes.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":46027620941903,"sku":"NGK3754","price":19.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/V-Power_Spark_Plugs_Box_of_4_NGK3754.png?v=1783525516","url":"https:\/\/www.blackopsautoworks.com\/products\/ngk-tr4-v-power-spark-plugs-box-of-4","provider":"Black Ops Auto Works","version":"1.0","type":"link"}