{"product_id":"denso-spark-plug-set-ae92-sr5","title":"AE92 DENSO Spark Plug Set | 4A-F \/ 4A-FE (1988-91 Corolla)","description":"\u003ch2\u003eDENSO Standard U-Groove \/ Iridium TT Spark Plug Sets\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eFor 1988–1991 Toyota Corolla AE92 coupe equipped with the 4A-F or 4A-FE engine.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eRefresh the spark plugs on your \u003cstrong\u003e1988–1991 U.S.-market Toyota Corolla SR5 AE92 coupe\u003c\/strong\u003e with an engine-matched set of four. Choose Standard U-Groove for original-style replacement or Iridium TT for a longer-wearing electrode design.\u003c\/p\u003e\n\u003cp\u003eDENSO supplied original-equipment spark plugs for these engines. \u003cstrong\u003eBoth choices are factory pre-gapped — no gap adjustment required\u003c\/strong\u003e for the listed original 4A-F and 4A-FE applications.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard U-Groove:\u003c\/strong\u003e nickel firing electrodes with a copper-core center electrode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChanneled U-Groove ground electrode\u003c\/strong\u003e supports spark development on the Standard option.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIridium TT:\u003c\/strong\u003e fine iridium center electrode and platinum ground tip resist electrode wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistor construction\u003c\/strong\u003e for ignition-noise suppression.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket-seat design and solid terminals\u003c\/strong\u003e match the original plug connections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eToyota Corolla — AE92 Coupe\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1989:\u003c\/strong\u003e SR5 (U.S.-Market) \/ 4A-F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1990–1991:\u003c\/strong\u003e SR5 (U.S.-Market) \/ 4A-FE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSelect the year range for the original engine. \u003cstrong\u003eStandard U-Groove plugs differ between the two year ranges;\u003c\/strong\u003e Iridium TT uses the same plugs for both.\u003c\/li\u003e\n\u003cli\u003eEngine swaps and changed cylinder heads are outside this factory-engine fitment.\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 DENSO\u003cbr\u003e\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition\u003cbr\u003e\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Spark Plug\u003cbr\u003e\u003cstrong\u003eThread Diameter:\u003c\/strong\u003e 14 mm\u003cbr\u003e\u003cstrong\u003eThread Reach:\u003c\/strong\u003e 19 mm\u003cbr\u003e\u003cstrong\u003eHex Size:\u003c\/strong\u003e 16 mm\u003cbr\u003e\u003cstrong\u003eSeat Type:\u003c\/strong\u003e Gasket\u003cbr\u003e\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Solid\u003cbr\u003e\u003cstrong\u003eFactory Pre-Gapped:\u003c\/strong\u003e Standard U-Groove 1.1 mm for 1988–1989 and 0.8 mm for 1990–1991; Iridium TT 1.0 mm for both\u003cbr\u003e\u003cstrong\u003eOriginal Plug Gap:\u003c\/strong\u003e 1.1 mm for 1988–1989 4A-F; 0.8 mm for 1990–1991 4A-FE\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhich Spark Plug Should You Buy?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eStandard U-Groove — Best for Original-Style Maintenance on a Budget\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose Standard U-Groove if you want an economical replacement that retains the original nickel-electrode design. It is the lower-priced choice for routine spark-plug service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIridium TT — Best for Daily Driving with Longer-Wearing Electrodes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChoose Iridium TT if electrode durability is worth the higher upfront cost. Its iridium and platinum firing tips resist wear, without a promised power increase or a vehicle-specific extended service interval.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOur Recommendation:\u003c\/strong\u003e Choose Standard U-Groove for original-style replacement and lower purchase cost, or Iridium TT when longer-wearing electrodes are your priority.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eAvailable Configurations\u003c\/h2\u003e\n\u003cp\u003eEvery set contains \u003cstrong\u003efour matching DENSO spark plugs\u003c\/strong\u003e. Both spark plug types are offered for each year range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1. Year Range\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1988–1989\u003c\/strong\u003e — 4A-F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1990–1991\u003c\/strong\u003e — 4A-FE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e2. Spark Plug Type\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eIridium TT\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard U-Groove\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"1988–1989 \/ Standard U-Groove","offer_id":68024158126389,"sku":"1732","price":19.99,"currency_code":"USD","in_stock":true},{"title":"1988–1989 \/ Iridium TT","offer_id":67994676035893,"sku":"1733","price":35.99,"currency_code":"USD","in_stock":true},{"title":"1990–1991 \/ Standard U-Groove","offer_id":68024158159157,"sku":"1734","price":19.99,"currency_code":"USD","in_stock":true},{"title":"1990–1991 \/ Iridium TT","offer_id":67995228930357,"sku":"1735","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/6005\/8421\/files\/ae86-denso-spark-plug-set-01.png?v=1792551065","url":"https:\/\/preserverad.com\/products\/denso-spark-plug-set-ae92-sr5","provider":"Preserve Rad","version":"1.0","type":"link"}