AC Delco SF552 Heavy‑Duty 12V Signal Flasher (NOS, Boxed)

$29.99

type: Unknown Type
Vendor: CorvairFarmer

Description:

Genuine AC Delco SF552 heavy‑duty flasher, GM part 6450089, correct for 1960s–1980s GM cars and trucks. Rated for 1–6 lamps, ideal for turn signals, hazards, and trailer‑towing circuits.

Key Specs

  • Brand: AC Delco (GM Genuine Parts)

  • Model: SF552

  • GM Part Number: 6450089

  • Voltage: 12V

  • Lamp Capacity: 1–6 lamps

  • Type: Heavy‑Duty Thermal Flasher

  • Terminals: 2‑prong (L & P)

  • Construction: Metal canister, DOT‑approved

  • Era: 1960s–1980s GM production

This is the heavier‑load version of the common GM 552 flasher, designed for multi‑lamp circuits and hazard systems.

The SF552 was used across nearly all GM divisions:

GM Cars

  • Chevrolet: Camaro, Chevelle, Nova, Impala, Caprice

  • Pontiac: Firebird, Grand Prix, Catalina

  • Buick: Skylark, LeSabre, Electra

  • Oldsmobile: Cutlass, Delta 88, 98

  • Cadillac: Fleetwood, DeVille

GM Trucks & Commercial

  • Chevy C/K pickups, Suburban, Blazer

  • GMC Sierra, Jimmy, Vandura

  • Medium‑duty trucks

  • Fleet vehicles

  • School buses (GM chassis)

Typical Uses

  • Turn‑signal flasher

  • Hazard flasher

  • Trailer‑towing multi‑lamp circuits

  • Commercial multi‑lamp signal systems

Features: • 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

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