{"product_id":"ngk-spark-plugs-1984-1987-toyota-corolla-sr5-ae86-4ac","title":"AE86 NGK Spark Plug Set | 4A-C (Corolla 1983-1987)","description":"\u003ch2\u003eNGK V-Power \/ Iridium IX Spark Plug Set\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFor 1984–1987 Toyota Corolla Sport SR5 AE86 with 1.6L 4A-C\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eNGK Spark Plug Set\u003c\/strong\u003e provides two ignition options for \u003cstrong\u003e1984–1987 Toyota Corolla Sport SR5 AE86\u003c\/strong\u003e models equipped with the carbureted \u003cstrong\u003e1.6L 4A-C SOHC engine\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eChoose \u003cstrong\u003eV-Power Nickel\u003c\/strong\u003e for a conventional OE-style replacement using NGK's V-groove electrode design, or upgrade to \u003cstrong\u003eIridium IX\u003c\/strong\u003e for a fine-wire iridium center electrode with increased wear resistance and strong, consistent ignitability.\u003c\/p\u003e\n\u003cp\u003eBoth options use the correct 4A-C spark-plug dimensions, \u003cstrong\u003eNGK heat range 5\u003c\/strong\u003e, resistor construction, and \u003cstrong\u003e1.1 mm \/ 0.044 in. gap\u003c\/strong\u003e, making the choice primarily a matter of conventional nickel versus premium iridium electrode technology.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned for \u003cstrong\u003e1984–1987 AE86 4A-C\u003c\/strong\u003e applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eChoice of \u003cstrong\u003eV-Power Nickel\u003c\/strong\u003e or \u003cstrong\u003eIridium IX\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eComplete set of \u003cstrong\u003e4 spark plugs\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNGK heat range \u003cstrong\u003e5\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResistor-type construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eM14 x 1.25\u003c\/strong\u003e thread\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e19 mm \/ 0.750 in. thread reach\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGasket-style seat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1.1 mm \/ 0.044 in. nominal gap\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProjected-tip design\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eIridium IX vs. V-Power Nickel\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIridium IX\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUses a fine-wire iridium center electrode designed to provide strong ignitability while offering substantially greater electrode wear resistance than a conventional nickel plug. It is the premium option for owners who want longer-lasting electrode technology and consistent spark performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eV-Power Nickel\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUses a nickel-alloy center electrode with NGK's V-groove design. It is the straightforward OE-style choice for routine maintenance, restoration work, and stock or lightly modified 4A-C engines.\u003c\/p\u003e\n\u003cp\u003eBoth configurations retain the same basic heat range, thread dimensions, reach, resistor construction, and specified spark-plug gap for the 4A-C application.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eToyota Corolla Sport SR5\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e1984–1987 Toyota Corolla Sport SR5 – \u003cstrong\u003eAE86 – RWD – 1.6L 4A-C – Manual or Automatic Transmission\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1.6L 4A-C SOHC engine applications\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRear-wheel drive AE86 application\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFour spark plugs are required for a complete engine replacement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpecified spark-plug gap is \u003cstrong\u003e1.1 mm \/ 0.044 in.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVerify plug gap before installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes not apply to 4A-GE-powered Corolla Sport GT-S models\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e NGK\u003cbr\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Spark Plug Set\u003cbr\u003e\u003cstrong\u003eEngine:\u003c\/strong\u003e 1.6L 4A-C SOHC\u003cbr\u003e\u003cstrong\u003eEngine Type:\u003c\/strong\u003e Carbureted Inline-4\u003cbr\u003e\u003cstrong\u003eHeat Range:\u003c\/strong\u003e 5\u003cbr\u003e\u003cstrong\u003eThread Size:\u003c\/strong\u003e M14 x 1.25\u003cbr\u003e\u003cstrong\u003eThread Reach:\u003c\/strong\u003e 19 mm \/ 0.750 in.\u003cbr\u003e\u003cstrong\u003eSeat Type:\u003c\/strong\u003e Gasket\u003cbr\u003e\u003cstrong\u003eNominal Gap:\u003c\/strong\u003e 1.1 mm \/ 0.044 in.\u003cbr\u003e\u003cstrong\u003eHex Size:\u003c\/strong\u003e 13\/16 in. \/ approximately 20.8 mm\u003cbr\u003e\u003cstrong\u003eResistor Type:\u003c\/strong\u003e Yes\u003cbr\u003e\u003cstrong\u003eQuantity:\u003c\/strong\u003e 4 Spark Plugs\u003cbr\u003e\u003cstrong\u003eAvailable Electrode Types:\u003c\/strong\u003e Nickel V-Power \/ Iridium IX\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eAvailable Configurations\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eV-Power Nickel\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e(4) NGK V-Power spark plugs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNickel-alloy center electrode\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eV-groove electrode design\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOE-style replacement configuration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIridium IX\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e(4) NGK Iridium IX spark plugs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFine-wire iridium center electrode\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIncreased electrode wear resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePremium ignition configuration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NGK","offers":[{"title":"V-Power Nickel","offer_id":53457892639029,"sku":"785","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Iridium IX","offer_id":53457892606261,"sku":"786","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/6005\/8421\/files\/ChatGPT_Image_May_21_2026_02_36_48_PM.png?v=1779394562","url":"https:\/\/preserverad.com\/products\/ngk-spark-plugs-1984-1987-toyota-corolla-sr5-ae86-4ac","provider":"Preserve Rad","version":"1.0","type":"link"}