{"product_id":"ac-delco-sf552-heavy-duty-12-volt-flasher-is-a-gm-original-2-terminal-thermal-flasher","title":"AC Delco SF552 Heavy‑Duty 12‑Volt Flasher is a GM‑original 2‑terminal thermal flasher","description":"\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eAC Delco SF552 Heavy‑Duty 12V Signal Flasher (NOS, Boxed)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe metal canister is stamped \u003cstrong\u003eSF 552 – 12 VOLT FLASHER\u003c\/strong\u003e, and the box identifies it as:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul role=\"list\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eAC Signal Flasher – Heavy Duty\u003c\/strong\u003e\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\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\u003eTerminals:\u003c\/strong\u003e 2‑prong (L = Load, P = Pilot)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer:\u003c\/strong\u003e AC Delco \/ GM General Motors Corporation\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\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThis is the \u003cstrong\u003eheavy‑duty version\u003c\/strong\u003e of the standard GM 552 flasher, designed to handle higher lamp loads and trailer circuits.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003e🚗 \u003cstrong\u003e\u003cspan role=\"button\" data-url=\"ca:\/\/s?q=List_GM_vehicle_applications_for_SF552\" tabindex=\"0\"\u003eCorrect GM Applications\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe SF552 fits nearly all GM vehicles using a \u003cstrong\u003e2‑terminal flasher\u003c\/strong\u003e, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eGM Passenger 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\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSuburban\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eBlazer\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eGMC Sierra \/ Jimmy\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eGM medium‑duty trucks\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eGM fleet vehicles\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\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\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":49059783835899,"sku":null,"price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0659\/3740\/8251\/files\/aa_0807c8be-c524-47ec-816b-302ee9e7f723.jpg?v=1783624915","url":"https:\/\/corvairfarmer.com\/products\/ac-delco-sf552-heavy-duty-12-volt-flasher-is-a-gm-original-2-terminal-thermal-flasher","provider":"CorvairFarmer","version":"1.0","type":"link"}