{"product_id":"ac-delco-sf552-heavy-duty-12v-signal-flasher-nos-boxed","title":"AC Delco SF552 Heavy‑Duty 12V Signal Flasher (NOS, Boxed)","description":"\u003cp\u003e\u003cspan\u003eGenuine \u003cstrong\u003eAC Delco SF552\u003c\/strong\u003e heavy‑duty flasher, GM part \u003cstrong\u003e6450089\u003c\/strong\u003e, correct for 1960s–1980s GM cars and trucks. Rated for \u003cstrong\u003e1–6 lamps\u003c\/strong\u003e, ideal for turn signals, hazards, and trailer‑towing circuits.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e AC Delco (GM Genuine Parts)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e SF552\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eGM Part Number:\u003c\/strong\u003e 6450089\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12V\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eLamp Capacity:\u003c\/strong\u003e 1–6 lamps\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Heavy‑Duty Thermal Flasher\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTerminals:\u003c\/strong\u003e 2‑prong (L \u0026amp; P)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eConstruction:\u003c\/strong\u003e Metal canister, DOT‑approved\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eEra:\u003c\/strong\u003e 1960s–1980s GM production\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThis is the \u003cstrong\u003eheavier‑load version\u003c\/strong\u003e of the common GM 552 flasher, designed for multi‑lamp circuits and hazard systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe SF552 was used across nearly all GM divisions:\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eGM Cars\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eChevrolet: Camaro, Chevelle, Nova, Impala, Caprice\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePontiac: Firebird, Grand Prix, Catalina\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBuick: Skylark, LeSabre, Electra\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eOldsmobile: Cutlass, Delta 88, 98\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCadillac: Fleetwood, DeVille\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGM Trucks \u0026amp; Commercial\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eChevy C\/K pickups, Suburban, Blazer\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eGMC Sierra, Jimmy, Vandura\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMedium‑duty trucks\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFleet vehicles\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSchool buses (GM chassis)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Uses\u003c\/h3\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eTurn‑signal flasher\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eHazard flasher\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eTrailer‑towing multi‑lamp circuits\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCommercial multi‑lamp signal systems\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e • OEM AC Delco \/ GM part • Heavy‑Duty 12V flasher • Supports multi‑lamp circuits • Perfect for GM restorations and concours builds • NOS condition with original GM packaging\u003c\/span\u003e\u003c\/p\u003e","brand":"CorvairFarmer","offers":[{"title":"Default Title","offer_id":49059761389819,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0659\/3740\/8251\/files\/aa_dd35d79b-c469-4f04-a740-3a0f71d21b54.jpg?v=1783622775","url":"https:\/\/corvairfarmer.com\/products\/ac-delco-sf552-heavy-duty-12v-signal-flasher-nos-boxed","provider":"CorvairFarmer","version":"1.0","type":"link"}