{"product_id":"acdelco-r44t-conventional-spark-plug","title":"ACDelco R44T Conventional Spark Plug","description":"\u003ch3 data-section-id=\"3h1ku8\" data-start=\"47\" data-end=\"62\"\u003eDescription\u003c\/h3\u003e\n\u003cp data-start=\"63\" data-end=\"368\"\u003eThe \u003cstrong data-start=\"67\" data-end=\"103\"\u003eACDelco Gold (Professional) R44T\u003c\/strong\u003e is a \u003cstrong data-start=\"109\" data-end=\"148\"\u003econventional copper-core spark plug\u003c\/strong\u003e built for reliable ignition performance and OE-style fit. It is designed as a premium aftermarket replacement for many \u003cstrong data-start=\"268\" data-end=\"312\"\u003eGM and other older gasoline applications\u003c\/strong\u003e, including light trucks, vans, and commercial vehicles.\u003c\/p\u003e\n\u003cp data-start=\"370\" data-end=\"605\"\u003eIts \u003cstrong data-start=\"374\" data-end=\"389\"\u003ecopper core\u003c\/strong\u003e helps transfer heat efficiently, while the \u003cstrong data-start=\"433\" data-end=\"455\"\u003eBlack Onyx coating\u003c\/strong\u003e helps resist corrosion. This plug is pre-gapped and intended for dependable day-to-day service in engines originally designed for conventional plugs.\u003c\/p\u003e\n\u003chr data-start=\"607\" data-end=\"610\"\u003e\n\u003ch3 data-section-id=\"1iz91iu\" data-start=\"612\" data-end=\"628\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"629\" data-end=\"973\"\u003e\n\u003cli data-section-id=\"uxr4ux\" data-start=\"629\" data-end=\"688\"\u003e\n\u003cstrong data-start=\"631\" data-end=\"646\"\u003eCopper core\u003c\/strong\u003e for strong heat transfer and durability\u003c\/li\u003e\n\u003cli data-section-id=\"4jv4jw\" data-start=\"689\" data-end=\"738\"\u003e\n\u003cstrong data-start=\"691\" data-end=\"713\"\u003eBlack Onyx coating\u003c\/strong\u003e helps reduce corrosion\u003c\/li\u003e\n\u003cli data-section-id=\"5rmnd9\" data-start=\"739\" data-end=\"823\"\u003e\n\u003cstrong data-start=\"741\" data-end=\"764\"\u003eResistor spark plug\u003c\/strong\u003e for suppression characteristics and reliable performance\u003c\/li\u003e\n\u003cli data-section-id=\"ypjhz2\" data-start=\"824\" data-end=\"859\"\u003e\u003cstrong data-start=\"826\" data-end=\"857\"\u003ePre-gapped from the factory\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1j0o7ze\" data-start=\"860\" data-end=\"887\"\u003e\u003cstrong data-start=\"862\" data-end=\"885\"\u003eTapered seat design\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"8t58jh\" data-start=\"888\" data-end=\"973\"\u003eSuitable for \u003cstrong data-start=\"903\" data-end=\"938\"\u003emany GM and legacy applications\u003c\/strong\u003e, including some marine use cases\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"975\" data-end=\"978\"\u003e\n\u003ch3 data-section-id=\"1yl5694\" data-start=\"980\" data-end=\"998\"\u003eSpecifications\u003c\/h3\u003e\n\u003cp data-start=\"1000\" data-end=\"1011\"\u003e\u003cstrong data-start=\"1000\" data-end=\"1011\"\u003eGeneral\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1012\" data-end=\"1129\"\u003e\n\u003cli data-section-id=\"1hokpi8\" data-start=\"1012\" data-end=\"1035\"\u003ePart Number: \u003cstrong data-start=\"1027\" data-end=\"1035\"\u003eR44T\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"190w11m\" data-start=\"1036\" data-end=\"1059\"\u003eBrand: \u003cstrong data-start=\"1045\" data-end=\"1059\"\u003eA.C. Delco\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1qu5dx\" data-start=\"1060\" data-end=\"1103\"\u003ePlug Type: \u003cstrong data-start=\"1073\" data-end=\"1103\"\u003eConventional \/ Copper Core\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"205oqt\" data-start=\"1104\" data-end=\"1129\"\u003eGrade Type: \u003cstrong data-start=\"1118\" data-end=\"1129\"\u003eRegular\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1131\" data-end=\"1145\"\u003e\u003cstrong data-start=\"1131\" data-end=\"1145\"\u003eDimensions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1146\" data-end=\"1265\"\u003e\n\u003cli data-section-id=\"15aa0u6\" data-start=\"1146\" data-end=\"1174\"\u003eThread Diameter: \u003cstrong data-start=\"1165\" data-end=\"1174\"\u003e14 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1yv2g7u\" data-start=\"1175\" data-end=\"1206\"\u003eReach: \u003cstrong data-start=\"1184\" data-end=\"1206\"\u003e0.43 in \/ 10.92 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"34flr6\" data-start=\"1207\" data-end=\"1240\"\u003eHex Size: \u003cstrong data-start=\"1219\" data-end=\"1240\"\u003e5\/8 in \/ 15.88 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"7ljhbu\" data-start=\"1241\" data-end=\"1265\"\u003eSeat Type: \u003cstrong data-start=\"1254\" data-end=\"1265\"\u003eTapered\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1267\" data-end=\"1293\"\u003e\u003cstrong data-start=\"1267\" data-end=\"1293\"\u003eElectrical \/ Electrode\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1294\" data-end=\"1563\"\u003e\n\u003cli data-section-id=\"yk29my\" data-start=\"1294\" data-end=\"1332\"\u003eTerminal Type: \u003cstrong data-start=\"1311\" data-end=\"1332\"\u003eNon-Removable Nut\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"rfd3de\" data-start=\"1333\" data-end=\"1357\"\u003eResistor Type: \u003cstrong data-start=\"1350\" data-end=\"1357\"\u003eYes\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1s229zy\" data-start=\"1358\" data-end=\"1393\"\u003eCenter Electrode Core: \u003cstrong data-start=\"1383\" data-end=\"1393\"\u003eCopper\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"187loqx\" data-start=\"1394\" data-end=\"1443\"\u003eCenter Electrode Tip Material: \u003cstrong data-start=\"1427\" data-end=\"1443\"\u003eNickel Alloy\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"jnsj52\" data-start=\"1444\" data-end=\"1488\"\u003eGround Electrode Core Material: \u003cstrong data-start=\"1478\" data-end=\"1488\"\u003eNickel\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1nrbcnu\" data-start=\"1489\" data-end=\"1523\"\u003eGround Electrode Quantity: \u003cstrong data-start=\"1518\" data-end=\"1523\"\u003e1\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1gb2o6v\" data-start=\"1524\" data-end=\"1563\"\u003eCenter Electrode Design: \u003cstrong data-start=\"1551\" data-end=\"1563\"\u003eStandard\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1565\" data-end=\"1585\"\u003e\u003cstrong data-start=\"1565\" data-end=\"1585\"\u003eGap \/ Heat Range\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1586\" data-end=\"1652\"\u003e\n\u003cli data-section-id=\"18ffnv5\" data-start=\"1586\" data-end=\"1619\"\u003ePre-Gap: \u003cstrong data-start=\"1597\" data-end=\"1619\"\u003e0.040 in \/ 1.02 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1855z12\" data-start=\"1620\" data-end=\"1652\"\u003eManufacturer Heat Range: \u003cstrong data-start=\"1647\" data-end=\"1652\"\u003e4\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1654\" data-end=\"1657\"\u003e\n\u003ch3 data-section-id=\"19i0hl8\" data-start=\"1659\" data-end=\"1679\"\u003eFitment Overview\u003c\/h3\u003e\n\u003cp data-start=\"1680\" data-end=\"1767\"\u003eThis plug fits a very large range of older GM vehicles and work trucks, including many:\u003c\/p\u003e\n\u003cul data-start=\"1769\" data-end=\"1999\"\u003e\n\u003cli data-section-id=\"g67m52\" data-start=\"1769\" data-end=\"1849\"\u003e\n\u003cstrong data-start=\"1771\" data-end=\"1784\"\u003eChevrolet\u003c\/strong\u003e C\/K trucks, Blazer, G-series vans, P-series step vans, El Camino\u003c\/li\u003e\n\u003cli data-section-id=\"1kibduc\" data-start=\"1850\" data-end=\"1926\"\u003e\n\u003cstrong data-start=\"1852\" data-end=\"1859\"\u003eGMC\u003c\/strong\u003e C\/K trucks, Jimmy, G-series vans, P-series vans, Caballero, Sprint\u003c\/li\u003e\n\u003cli data-section-id=\"t8xh8a\" data-start=\"1927\" data-end=\"1999\"\u003eSelected \u003cstrong data-start=\"1938\" data-end=\"1952\"\u003eOldsmobile\u003c\/strong\u003e and \u003cstrong data-start=\"1957\" data-end=\"1968\"\u003ePontiac\u003c\/strong\u003e older inline-6\/V8 applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2001\" data-end=\"2105\"\u003eTypical fitment spans many \u003cstrong data-start=\"2028\" data-end=\"2083\"\u003e1970s–1990s GM trucks, vans, and commercial chassis\u003c\/strong\u003e with engines such as:\u003c\/p\u003e\n\u003cul data-start=\"2106\" data-end=\"2161\"\u003e\n\u003cli data-section-id=\"1ynrv1w\" data-start=\"2106\" data-end=\"2126\"\u003e\u003cstrong data-start=\"2108\" data-end=\"2126\"\u003eL6 4.1L \/ 4.8L\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1rrw419\" data-start=\"2127\" data-end=\"2161\"\u003e\u003cstrong data-start=\"2129\" data-end=\"2161\"\u003eV8 5.0L \/ 5.7L \/ 6.6L \/ 7.4L\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2163\" data-end=\"2166\"\u003e\n\u003ch3 data-section-id=\"vblttf\" data-start=\"2168\" data-end=\"2186\"\u003eFAQ Highlights\u003c\/h3\u003e\n\u003cp data-start=\"2187\" data-end=\"2212\"\u003eFrom the product details:\u003c\/p\u003e\n\u003cul data-start=\"2213\" data-end=\"2521\"\u003e\n\u003cli data-section-id=\"3hgzpw\" data-start=\"2213\" data-end=\"2278\"\u003eSpark plug change intervals depend on the vehicle and plug type\u003c\/li\u003e\n\u003cli data-section-id=\"1r9k58g\" data-start=\"2279\" data-end=\"2325\"\u003eReplace \u003cstrong data-start=\"2289\" data-end=\"2325\"\u003eall spark plugs at the same time\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"19eevxd\" data-start=\"2326\" data-end=\"2358\"\u003eThese plugs are \u003cstrong data-start=\"2344\" data-end=\"2358\"\u003epre-gapped\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ok4sau\" data-start=\"2359\" data-end=\"2426\"\u003eDirty or worn plugs should generally be \u003cstrong data-start=\"2401\" data-end=\"2426\"\u003ereplaced, not cleaned\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1atvdb\" data-start=\"2427\" data-end=\"2521\"\u003eWorn plugs can cause \u003cstrong data-start=\"2450\" data-end=\"2521\"\u003emisfire, poor fuel economy, sluggish performance, and hard starting\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2523\" data-end=\"2526\"\u003e\n\u003ch3 data-section-id=\"wv8cei\" data-start=\"2528\" data-end=\"2539\"\u003eSummary\u003c\/h3\u003e\n\u003cp data-start=\"2540\" data-end=\"2846\"\u003eThe \u003cstrong data-start=\"2544\" data-end=\"2560\"\u003eACDelco R44T\u003c\/strong\u003e is a solid \u003cstrong data-start=\"2572\" data-end=\"2623\"\u003econventional copper-core replacement spark plug\u003c\/strong\u003e for many older GM engines. It is best suited to applications that originally used standard plugs and is a practical choice for \u003cstrong data-start=\"2751\" data-end=\"2784\"\u003ereliable everyday performance\u003c\/strong\u003e rather than extended-life iridium\/platinum service intervals.\u003c\/p\u003e","brand":"ACDelco","offers":[{"title":"Default Title","offer_id":46445503217863,"sku":"ELE2216","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2026-04-23133126.png?v=1776976300","url":"https:\/\/mainstreeteshop.com\/products\/acdelco-r44t-conventional-spark-plug","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}