{"product_id":"optispark-vacuum-harness-lt1-lt4-bdf-body","title":"Optispark Distributor Vacuum Harness – LT1\/LT4 (1993–1997 B\/D\/F-Body)","description":"\u003cp\u003e\u003cem\u003eVacuum harness for LT1 and LT4 engines equipped with a ventilated Optispark distributor, found in \u003cstrong\u003eB-, D-, and F-body\u003c\/strong\u003e vehicles including the \u003cstrong\u003eCamaro, Firebird, Impala SS, Fleetwood, Caprice\u003c\/strong\u003e, and \u003cstrong\u003eRoadmaster\u003c\/strong\u003e. Replaces discontinued GM part number \u003cstrong\u003e12555323\u003c\/strong\u003e.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e⚠️ \u003cem data-start=\"350\" data-end=\"362\"\u003eImportant:\u003c\/em\u003e This harness is \u003cstrong data-start=\"379\" data-end=\"416\"\u003enot compatible with Corvettes\u003c\/strong\u003e.\u003cbr data-start=\"482\" data-end=\"485\"\u003e→ \u003ca title=\"Optispark Distributor Vacuum Harness – C4 Corvette\" href=\"https:\/\/petrisenterprises.com\/collections\/nos-and-used-parts\/products\/optispark-vacuum-harness-1992-1996-corvette\"\u003eClick here for the Corvette-specific harness\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eUpgrade your worn or heat-damaged vacuum harness assembly with our high-quality replacement. Our assembly includes the correct micron filter, check valve, fitting, and hose to suit GM ventilated Optispark distributors.  The check valve and filter match the original micron rating and are constructed from Viton material for enhanced durability. Additionally, the check valve features an integral orifice to help prevent cap implosion.\u003c\/p\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Vacuum Flow:\u003c\/strong\u003e Our harness assembly is designed with the correct vacuum orifice, ensuring optimal vacuum flow without risking distributor damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Quality Construction:\u003c\/strong\u003e While not original equipment from the manufacturer, our harness is crafted to closely match original specifications and appearance. We use high-quality vacuum hoses and fittings for durability and reliable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003ePlease note: Minor variations may occur due to component availability.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eInstallation Tips:\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAttaching the vacuum hose to the distributor cap can be challenging when the ambient temperature is below 85°F.\u003c\/strong\u003e To ease installation, we recommend using a non-silicone-based lubricant, such as WD-40 or CRC.\u003c\/p\u003e","brand":"Throwback Automotive","offers":[{"title":"Default Title","offer_id":42278686195912,"sku":"IGN-HRN-005","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0961\/8378\/files\/optispark-distributor-vacuum-harness-lt1lt4-1993-1997-bdf-body-vacuum-harness.jpg?v=1758132903","url":"https:\/\/throwbackautomotive.com\/products\/optispark-vacuum-harness-lt1-lt4-bdf-body","provider":"Throwback Automotive","version":"1.0","type":"link"}