{"product_id":"universal-spark-plugs-m14-1-25-5637","title":"NGK V-Line 5637 Spark plug","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eNGK Spark plug (5637)\u003c\/strong\u003e, also widely known by its factory stock code \u003cstrong\u003eBP6ET\u003c\/strong\u003e, is an original-equipment-quality multi-ground ignition component engineered by NGK. Installed directly into the cylinder head combustion chambers, its primary function is to ignite the compressed air-fuel mixture via a high-voltage electrical spark. Featuring a specialized 3-ground electrode layout, this plug optimizes spark propagation by allowing the electrical arc to naturally path across the cleanest path, substantially reducing misfires, ensuring stable engine idling, and preventing carbon fouling during persistent urban stop-and-go driving.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e NGK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesignation \/ Type:\u003c\/strong\u003e BP6ET\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStock Number:\u003c\/strong\u003e 5637\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Condition:\u003c\/strong\u003e New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size \/ Diameter [mm]:\u003c\/strong\u003e 14\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length [mm]:\u003c\/strong\u003e 19 (3\/4\" Reach)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpanner \/ Hex Size [mm]:\u003c\/strong\u003e 20.8 (13\/16\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpark Position [mm]:\u003c\/strong\u003e 7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrode Configuration:\u003c\/strong\u003e 3-Ground Electrodes (Multi-ground design for prolonged service life)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCore Material:\u003c\/strong\u003e Copper Core for maximum thermal conductivity and heat dissipation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Removable SAE nut configuration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTechnical Features:\u003c\/strong\u003e Corrugated ribs to prevent flashover; pure alumina silicate ceramic insulator provides superior dielectric and mechanical strength.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eVehicle Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe BP6ET multi-ground spark plug is a historical benchmark component custom-matched to standard 4-cylinder, 8-valve (8V) naturally aspirated carburetted and fuel-injected engine lineages across the classic Volkswagen Group (VAG) model network:\u003c\/p\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color: #f2f2f2;\"\u003e\n      \u003cth\u003eCar Model\u003c\/th\u003e\n      \u003cth\u003eCompatible Engines \/ Variants\u003c\/th\u003e\n      \u003cth\u003eEngine Power (hp \/ kW)\u003c\/th\u003e\n      \u003cth\u003eYear of Manufacture\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eVW Golf II (19E, 1G1) \/ Jetta II (19E)\u003c\/td\u003e\n      \u003ctd\u003e1.6 \/ 1.6 Cat \/ 1.8 \/ 1.8 Syncro \/ 1.8 GTI \u003cbr\u003e\u003cem\u003e(Classic 8V setups like the EZ, GU, RP, PB, and PF codes)\u003c\/em\u003e\n\u003c\/td\u003e\n      \u003ctd\u003e72 - 112 hp \/ 53 - 82 kW\u003c\/td\u003e\n      \u003ctd\u003e1983 - 1992\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eVW Golf III (1H1) \/ Vento (1H2) \/ Variant Estate\u003c\/td\u003e\n      \u003ctd\u003e1.8 \/ 2.0 \/ 2.0 GTI \u003cbr\u003e\u003cem\u003e(8-valve powerplants including ABS, ADZ, and 2E codes)\u003c\/em\u003e\n\u003c\/td\u003e\n      \u003ctd\u003e90 - 115 hp \/ 66 - 85 kW\u003c\/td\u003e\n      \u003ctd\u003e1991 - 1995\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eVW Passat B2 (32B) \/ B3 \u0026amp; B4 (3A2, 35I)\u003c\/td\u003e\n      \u003ctd\u003e1.6 \/ 1.8 \/ 2.0 \u003cbr\u003e\u003cem\u003e(Standard 4-cylinder single and multi-point injection platforms)\u003c\/em\u003e\n\u003c\/td\u003e\n      \u003ctd\u003e72 - 115 hp \/ 53 - 85 kW\u003c\/td\u003e\n      \u003ctd\u003e1982 - 1996\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eAUDI 80 B2 \u0026amp; B3 (81, 85, 89, 8A) \/ AUDI 100 C3\u003c\/td\u003e\n      \u003ctd\u003e1.6 \/ 1.8 \/ 1.8 S \/ 1.8 E \/ 2.0 \/ 2.0 E\u003c\/td\u003e\n      \u003ctd\u003e75 - 115 hp \/ 55 - 85 kW\u003c\/td\u003e\n      \u003ctd\u003e1982 - 1991\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSEAT Ibiza II (6K1) \/ Cordoba (6K1, 6K2) \/ Toledo I (1L)\u003c\/td\u003e\n      \u003ctd\u003e1.6 i \/ 1.8 i \/ 2.0 i (Standard 8-valve variants)\u003c\/td\u003e\n      \u003ctd\u003e71 - 115 hp \/ 52 - 85 kW\u003c\/td\u003e\n      \u003ctd\u003e1991 - 1999\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cblockquote\u003e⚠️ \u003cstrong\u003eCritical Engine Management Note:\u003c\/strong\u003e This spark plug is specifically balanced for mid-range operating temperatures (NGK Heat Range 6) on vintage \u003cstrong\u003e8-valve (8V) engines\u003c\/strong\u003e. It will NOT fit high-performance multi-valve layouts (such as the 1.8 GTI 16V, 2.0 16V, VR6, or later 20V Turbo engine platforms), which require entirely different structural thread sizes, distinct terminal extensions, or colder heat ratings to counter high cylinder pressures. Always inspect your factory code manual prior to ordering.\u003c\/blockquote\u003e\n\n\u003ch3\u003eOriginal Equipment Manufacturer (OEM) Reference Numbers\u003c\/h3\u003e\n\u003cp\u003eThis premium replacement multi-ground ignition component directly replaces or satisfies factory catalog options from the following assembly manifests:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVAG (VW \/ AUDI \/ SEAT \/ SKODA):\u003c\/strong\u003e 101 000 001AA, 101000001AA, 101 000 005AA, 101000005AA, 101 000 007AA, 101000007AA, 101 000 031AA, 101000031AA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNGK:\u003c\/strong\u003e BP6ET, 5637\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ngk","offers":[{"title":"Default Title","offer_id":57537988755839,"sku":"5637","price":5.5,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1005\/7252\/9023\/files\/thumb_03df0465-59b8-47c0-a13f-a054c2f0b0cc.jpg?v=1778859419","url":"https:\/\/klassik357.eu\/products\/universal-spark-plugs-m14-1-25-5637","provider":"Klassik357 - Classic and retro car parts","version":"1.0","type":"link"}