{"product_id":"champion-copper-plus-spark-plug-j12yc-part-number-10","title":"Champion Copper Plus Spark Plug J12YC – Part Number 10","description":"\u003cp data-start=\"201\" data-end=\"667\"\u003e\u003cstrong data-start=\"201\" data-end=\"217\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"217\" data-end=\"220\"\u003eThe Champion Copper Plus J12YC Spark Plug is designed to deliver dependable ignition performance, reliable heat control, and long service life across a wide range of automotive, marine, industrial, agricultural, powersport, and small engine applications. Built as an OE-type replacement, this plug features a copper core center electrode that improves conductivity and helps manage heat more accurately for consistent operation and reduced wear.\u003c\/p\u003e\n\u003cp data-start=\"669\" data-end=\"1059\"\u003eEngineered to resist fouling and corrosion, the J12YC is manufactured to ISO and SAE standards for proven performance and durability. Its nickel center electrode, nickel copper alloy ground electrode, and flat-seat gasket design make it a reliable replacement spark plug for older and specialty engine applications where accurate heat range and dependable ignition performance are critical.\u003c\/p\u003e\n\u003cp data-start=\"1061\" data-end=\"1074\"\u003e\u003cstrong data-start=\"1061\" data-end=\"1074\"\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1076\" data-end=\"1573\"\u003e\n\u003cli data-section-id=\"1iy274a\" data-start=\"1076\" data-end=\"1163\"\u003e\n\u003cp data-start=\"1078\" data-end=\"1163\"\u003eCopper core center electrode provides strong conductivity and accurate heat control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"uyfe9t\" data-start=\"1164\" data-end=\"1230\"\u003e\n\u003cp data-start=\"1166\" data-end=\"1230\"\u003eOE-type replacement spark plug for dependable fit and function\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"112jjhr\" data-start=\"1231\" data-end=\"1284\"\u003e\n\u003cp data-start=\"1233\" data-end=\"1284\"\u003eResists fouling for reliable ignition performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1rdeo57\" data-start=\"1285\" data-end=\"1342\"\u003e\n\u003cp data-start=\"1287\" data-end=\"1342\"\u003eSuperior corrosion resistance for longer service life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"d7rqmf\" data-start=\"1343\" data-end=\"1400\"\u003e\n\u003cp data-start=\"1345\" data-end=\"1400\"\u003eBuilt to ISO and SAE standards for proven performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"uyax9d\" data-start=\"1401\" data-end=\"1458\"\u003e\n\u003cp data-start=\"1403\" data-end=\"1458\"\u003eNickel center electrode tip for dependable durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1bfforn\" data-start=\"1459\" data-end=\"1514\"\u003e\n\u003cp data-start=\"1461\" data-end=\"1514\"\u003eFlat seat with crush washer for secure installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1vspvwi\" data-start=\"1515\" data-end=\"1573\"\u003e\n\u003cp data-start=\"1517\" data-end=\"1573\"\u003eRemovable nut terminal for flexible connection options\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1575\" data-end=\"1602\"\u003e\u003cstrong data-start=\"1575\" data-end=\"1602\"\u003eProduct Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1604\" data-end=\"2587\"\u003e\n\u003cli data-section-id=\"1vit813\" data-start=\"1604\" data-end=\"1623\"\u003e\n\u003cp data-start=\"1606\" data-end=\"1623\"\u003ePart number: 10\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1f9wglz\" data-start=\"1624\" data-end=\"1644\"\u003e\n\u003cp data-start=\"1626\" data-end=\"1644\"\u003ePlug type: J12YC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"iqia62\" data-start=\"1645\" data-end=\"1685\"\u003e\n\u003cp data-start=\"1647\" data-end=\"1685\"\u003eClassification: Champion Copper Plus\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"145hp0a\" data-start=\"1686\" data-end=\"1722\"\u003e\n\u003cp data-start=\"1688\" data-end=\"1722\"\u003eGrade type: Standard Replacement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1daj57a\" data-start=\"1723\" data-end=\"1755\"\u003e\n\u003cp data-start=\"1725\" data-end=\"1755\"\u003ePart description: Spark Plug\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"13xlloe\" data-start=\"1756\" data-end=\"1797\"\u003e\n\u003cp data-start=\"1758\" data-end=\"1797\"\u003eCenter electrode tip material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"3c37w7\" data-start=\"1798\" data-end=\"1835\"\u003e\n\u003cp data-start=\"1800\" data-end=\"1835\"\u003eCenter electrode design: Standard\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"oajh81\" data-start=\"1836\" data-end=\"1873\"\u003e\n\u003cp data-start=\"1838\" data-end=\"1873\"\u003eCenter electrode diameter: 0.1 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"j9r4wh\" data-start=\"1874\" data-end=\"1924\"\u003e\n\u003cp data-start=\"1876\" data-end=\"1924\"\u003eGround electrode material: Nickel copper alloy\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"3au8g6\" data-start=\"1925\" data-end=\"1967\"\u003e\n\u003cp data-start=\"1927\" data-end=\"1967\"\u003eGround electrode core material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17jmp0w\" data-start=\"1968\" data-end=\"2009\"\u003e\n\u003cp data-start=\"1970\" data-end=\"2009\"\u003eGround electrode tip material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"enjm5w\" data-start=\"2010\" data-end=\"2051\"\u003e\n\u003cp data-start=\"2012\" data-end=\"2051\"\u003eGround electrode tip design: Standard\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"55pk7u\" data-start=\"2052\" data-end=\"2084\"\u003e\n\u003cp data-start=\"2054\" data-end=\"2084\"\u003eGround electrode quantity: 1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"a4gtht\" data-start=\"2085\" data-end=\"2122\"\u003e\n\u003cp data-start=\"2087\" data-end=\"2122\"\u003eCopper core center electrode: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"18ksohg\" data-start=\"2123\" data-end=\"2159\"\u003e\n\u003cp data-start=\"2125\" data-end=\"2159\"\u003ePre-gap size: 0.035 in \/ 0.89 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"v0mjtd\" data-start=\"2160\" data-end=\"2194\"\u003e\n\u003cp data-start=\"2162\" data-end=\"2194\"\u003eHex size: 0.813 in \/ 20.650 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"163h8t2\" data-start=\"2195\" data-end=\"2214\"\u003e\n\u003cp data-start=\"2197\" data-end=\"2214\"\u003eSeat type: Flat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1bmee87\" data-start=\"2215\" data-end=\"2234\"\u003e\n\u003cp data-start=\"2217\" data-end=\"2234\"\u003eReach: 0.375 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1uo8p47\" data-start=\"2235\" data-end=\"2276\"\u003e\n\u003cp data-start=\"2237\" data-end=\"2276\"\u003eThread diameter: 0.551 in \/ 14.000 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"jsvf8c\" data-start=\"2277\" data-end=\"2298\"\u003e\n\u003cp data-start=\"2279\" data-end=\"2298\"\u003eResistor type: No\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1gbvvjz\" data-start=\"2299\" data-end=\"2323\"\u003e\n\u003cp data-start=\"2301\" data-end=\"2323\"\u003eWasher included: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"udbmy7\" data-start=\"2324\" data-end=\"2346\"\u003e\n\u003cp data-start=\"2326\" data-end=\"2346\"\u003eWasher type: Crush\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fdor8m\" data-start=\"2347\" data-end=\"2390\"\u003e\n\u003cp data-start=\"2349\" data-end=\"2390\"\u003eElectrical terminal type: Removable Nut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1nt2tzg\" data-start=\"2391\" data-end=\"2406\"\u003e\n\u003cp data-start=\"2393\" data-end=\"2406\"\u003eIndexed: No\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"yaetjs\" data-start=\"2407\" data-end=\"2436\"\u003e\n\u003cp data-start=\"2409\" data-end=\"2436\"\u003eInsulator height: 0.09 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1vq4kgq\" data-start=\"2437\" data-end=\"2470\"\u003e\n\u003cp data-start=\"2439\" data-end=\"2470\"\u003eInsulator projection: 0.09 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"qqgsz4\" data-start=\"2471\" data-end=\"2500\"\u003e\n\u003cp data-start=\"2473\" data-end=\"2500\"\u003eInstalled height: 2.24 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"dfu1to\" data-start=\"2501\" data-end=\"2528\"\u003e\n\u003cp data-start=\"2503\" data-end=\"2528\"\u003eTaper diameter: 0.31 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"e3s3wh\" data-start=\"2529\" data-end=\"2560\"\u003e\n\u003cp data-start=\"2531\" data-end=\"2560\"\u003eManufacturer heat range: 12\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"198zmx6\" data-start=\"2561\" data-end=\"2587\"\u003e\n\u003cp data-start=\"2563\" data-end=\"2587\"\u003eSubject to Prop 65: No\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2589\" data-end=\"2601\"\u003e\u003cstrong data-start=\"2589\" data-end=\"2601\"\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2603\" data-end=\"2696\"\u003eApplications provided include a wide range of vehicles and equipment across these categories:\u003c\/p\u003e\n\u003cul data-start=\"2698\" data-end=\"2843\"\u003e\n\u003cli data-section-id=\"cqiy6p\" data-start=\"2698\" data-end=\"2729\"\u003e\n\u003cp data-start=\"2700\" data-end=\"2729\"\u003ePassenger Car \u0026amp; Light Truck\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1jcsg8w\" data-start=\"2730\" data-end=\"2771\"\u003e\n\u003cp data-start=\"2732\" data-end=\"2771\"\u003eCommercial, Industrial \u0026amp; Agricultural\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"subd31\" data-start=\"2772\" data-end=\"2786\"\u003e\n\u003cp data-start=\"2774\" data-end=\"2786\"\u003ePowersport\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"5jfjcp\" data-start=\"2787\" data-end=\"2803\"\u003e\n\u003cp data-start=\"2789\" data-end=\"2803\"\u003eSmall Engine\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"784n25\" data-start=\"2804\" data-end=\"2827\"\u003e\n\u003cp data-start=\"2806\" data-end=\"2827\"\u003eMarine Applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"lu9rww\" data-start=\"2828\" data-end=\"2843\"\u003e\n\u003cp data-start=\"2830\" data-end=\"2843\"\u003ePerformance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2845\" data-end=\"2902\"\u003eSelected fitment examples from the provided list include:\u003c\/p\u003e\n\u003cul data-start=\"2904\" data-end=\"4782\"\u003e\n\u003cli data-section-id=\"5axxcv\" data-start=\"2904\" data-end=\"2933\"\u003e\n\u003cp data-start=\"2906\" data-end=\"2933\"\u003e\u003cstrong data-start=\"2906\" data-end=\"2916\"\u003eApollo\u003c\/strong\u003e GT (1962–1965)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"jjwapn\" data-start=\"2934\" data-end=\"2963\"\u003e\n\u003cp data-start=\"2936\" data-end=\"2963\"\u003e\u003cstrong data-start=\"2936\" data-end=\"2949\"\u003eAvanti II\u003c\/strong\u003e (1965–1970)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"dqeed0\" data-start=\"2964\" data-end=\"3077\"\u003e\n\u003cp data-start=\"2966\" data-end=\"3077\"\u003e\u003cstrong data-start=\"2966\" data-end=\"2975\"\u003eBuick\u003c\/strong\u003e Electra, Estate Wagon, Gran Sport, Invicta, LeSabre, Riviera, Skylark, Special, Sportwagon, Wildcat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"105a4ga\" data-start=\"3078\" data-end=\"3111\"\u003e\n\u003cp data-start=\"3080\" data-end=\"3111\"\u003e\u003cstrong data-start=\"3080\" data-end=\"3091\"\u003eChecker\u003c\/strong\u003e Aerobus, Marathon\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1gkscdb\" data-start=\"3112\" data-end=\"3454\"\u003e\n\u003cp data-start=\"3114\" data-end=\"3454\"\u003e\u003cstrong data-start=\"3114\" data-end=\"3127\"\u003eChevrolet\u003c\/strong\u003e Bel Air, Biscayne, Brookwood, C10 Pickup, C10 Suburban, C20 Pickup, C20 Suburban, C30 Pickup, C60, Camaro, Caprice, Chevelle, Chevy II, Corvette, Del Ray, El Camino, G10 Van, G20 Van, Impala, K10 Pickup, K10 Suburban, K20 Pickup, K20 Suburban, K30 Pickup, Kingswood, Nomad, P20 Van, P30 Van, Parkwood, Two-Ten Series, Yeoman\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1b1qi4j\" data-start=\"3455\" data-end=\"3531\"\u003e\n\u003cp data-start=\"3457\" data-end=\"3531\"\u003e\u003cstrong data-start=\"3457\" data-end=\"3469\"\u003eChrysler\u003c\/strong\u003e 300, Cordoba, Imperial, New Yorker, Newport, Town \u0026amp; Country\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1l3320i\" data-start=\"3532\" data-end=\"3557\"\u003e\n\u003cp data-start=\"3534\" data-end=\"3557\"\u003e\u003cstrong data-start=\"3534\" data-end=\"3544\"\u003eDeSoto\u003c\/strong\u003e Adventurer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1k2up2q\" data-start=\"3558\" data-end=\"3711\"\u003e\n\u003cp data-start=\"3560\" data-end=\"3711\"\u003e\u003cstrong data-start=\"3560\" data-end=\"3569\"\u003eDodge\u003c\/strong\u003e 330, 440, 880, B100\/B200\/B300, Challenger, Charger, Coronet, D100\/D200\/D300, Dart, Monaco, Polara, Ramcharger, Royal Monaco, W100\/W200\/W300\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"7og425\" data-start=\"3712\" data-end=\"3784\"\u003e\n\u003cp data-start=\"3714\" data-end=\"3784\"\u003e\u003cstrong data-start=\"3714\" data-end=\"3723\"\u003eFargo\u003c\/strong\u003e A100\/A108, D100\/D110\/D200\/D210, F100\/FW100, W100\/W110\/W200\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fm993h\" data-start=\"3785\" data-end=\"3935\"\u003e\n\u003cp data-start=\"3787\" data-end=\"3935\"\u003e\u003cstrong data-start=\"3787\" data-end=\"3794\"\u003eGMC\u003c\/strong\u003e 1000, 1000 Series, 1500 Series, 2500 Series, 3000, 3500, C\/K pickups and Suburbans, G vans, P vans, Suburban, Truck, V3000 Forward Control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fcyhq\" data-start=\"3936\" data-end=\"4009\"\u003e\n\u003cp data-start=\"3938\" data-end=\"4009\"\u003e\u003cstrong data-start=\"3938\" data-end=\"3955\"\u003eInternational\u003c\/strong\u003e 1110, 1210, 1500B\/C\/D, M1100, M1400, M800, Scout II\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1vuc8dg\" data-start=\"4010\" data-end=\"4125\"\u003e\n\u003cp data-start=\"4012\" data-end=\"4125\"\u003e\u003cstrong data-start=\"4012\" data-end=\"4020\"\u003eJeep\u003c\/strong\u003e CJ3, CJ5, CJ5A, CJ6, CJ6A, Commando, DJ5, DJ6, Dispatcher, FC150, Jeepster, Universal, Universal Truck\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"7wtyh2\" data-start=\"4126\" data-end=\"4158\"\u003e\n\u003cp data-start=\"4128\" data-end=\"4158\"\u003e\u003cstrong data-start=\"4128\" data-end=\"4138\"\u003eJensen\u003c\/strong\u003e C-V8, Interceptor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"ddhf51\" data-start=\"4159\" data-end=\"4309\"\u003e\n\u003cp data-start=\"4161\" data-end=\"4309\"\u003e\u003cstrong data-start=\"4161\" data-end=\"4175\"\u003eOldsmobile\u003c\/strong\u003e 442, 98, Cutlass, Delmont 88, Delta 88, Dynamic 88, F85, Fiesta, Jetstar 88, Jetstar I, Starfire, Super 88, Toronado, Vista Cruiser\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zs0g1t\" data-start=\"4310\" data-end=\"4508\"\u003e\n\u003cp data-start=\"4312\" data-end=\"4508\"\u003e\u003cstrong data-start=\"4312\" data-end=\"4324\"\u003ePlymouth\u003c\/strong\u003e Barracuda, Belvedere, Belvedere II, Cuda, Fury, Fury I, Fury II, Fury III, GTX, Gran Fury, Road Runner, Satellite, Savoy, Sport Wagon, Suburban, Superbird, Trailduster, VIP, Valiant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"uge4ni\" data-start=\"4509\" data-end=\"4652\"\u003e\n\u003cp data-start=\"4511\" data-end=\"4652\"\u003e\u003cstrong data-start=\"4511\" data-end=\"4522\"\u003ePontiac\u003c\/strong\u003e Acadian, Beaumont, Bonneville, Catalina, Grand Prix, Laurentian, LeMans, Parisienne, Star Chief, Strato-Chief, Tempest, Ventura\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1b52bn\" data-start=\"4653\" data-end=\"4742\"\u003e\n\u003cp data-start=\"4655\" data-end=\"4742\"\u003e\u003cstrong data-start=\"4655\" data-end=\"4669\"\u003eStudebaker\u003c\/strong\u003e Avanti, Challenger, Commander, Cruiser, Daytona, Hawk, Lark, Wagonaire\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1et0qmn\" data-start=\"4743\" data-end=\"4782\"\u003e\n\u003cp data-start=\"4745\" data-end=\"4782\"\u003e\u003cstrong data-start=\"4745\" data-end=\"4755\"\u003eToyota\u003c\/strong\u003e Land Cruiser (1960–1972)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4784\" data-end=\"4944\"\u003eBecause the original input already included an extensive fitment list, that fitment information should be retained on the product page for application accuracy.\u003c\/p\u003e","brand":"CHAMPION","offers":[{"title":"Default Title","offer_id":46280588165319,"sku":"ELE1933","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2026-03-11153824.png?v=1773268575","url":"https:\/\/mainstreeteshop.com\/products\/champion-copper-plus-spark-plug-j12yc-part-number-10","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}