{"product_id":"ngk-4690-spark-plug","title":"NGK 4690 Spark Plug","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eNGK 4690 is a standard spark plug built to OE-equivalent specifications for select Subaru applications. It uses a copper core center electrode, nickel tip materials, and a semi-surface discharge ground design to support consistent ignition performance.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOE-equivalent spark plug design for dependable ignition service\u003c\/li\u003e\n\u003cli\u003eCopper core center electrode for efficient heat transfer\u003c\/li\u003e\n\u003cli\u003eNickel center and ground electrode tip materials\u003c\/li\u003e\n\u003cli\u003e0.044 in pre-gap and 14 mm thread diameter\u003c\/li\u003e\n\u003cli\u003eFlat seat with 0.75 in reach and 13\/16 in hex size\u003c\/li\u003e\n\u003cli\u003e5000 ohm resistance and non-removable nut terminal\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThis NGK spark plug, part number 4690, is engineered for 1991-1994 Subaru Justy applications and matches the OE-equivalent design called out for this fitment. The BUR6EA-11 configuration combines a semi-surface discharge ground electrode with a copper core center electrode to promote stable spark delivery and reliable combustion. NGK 4690 is a practical replacement choice for drivers maintaining factory-style ignition performance in the Subaru Justy.\u003c\/p\u003e\u003cp\u003eNGK’s long OE supplier history and broad coverage across automotive applications support the brand’s focus on original equipment standards and consistent manufacturing quality. This part cross-references Federal Parts 4690 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a worn spark plug that can cause misfires\u003c\/li\u003e\n\u003cli\u003eRestoring stable ignition performance after plug wear\u003c\/li\u003e\n\u003cli\u003eAddressing rough idle related to degraded spark output\u003c\/li\u003e\n\u003cli\u003eSupporting proper combustion when the original plug is due for service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eFits 1991-1994 Subaru Justy, N\/A. Verify the 0.044 in gap before installation and confirm the flat seat, 14 mm thread diameter, and 0.75 in reach match the engine specification. Use the BUR6EA-11 \/ 4690 specification as the reference when comparing replacement plugs.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNGK manufactures spark plugs to original equipment standards and backs this part with its OE-focused engineering and production experience.\u003c\/p\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":53725763928245,"sku":"BCDP-4690","price":11.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NG_4690_Fro.jpg?v=1794209645","url":"https:\/\/www.partcatalog.com\/products\/ngk-4690-spark-plug","provider":"PartCatalog","version":"1.0","type":"link"}