Standard Ignition Glow Plug Controller SS-591 for 1979-1985 Buick/Cadillac/Chevrolet 5.7L 4.3L (Century, Electra, Estate Wagon, LeSabre)
Always the correct part
Call or Chat
30-Day Returns Accepted
Free Ground Shipping
The Standard Ignition Theft Deterrent Relay (part number RY-49) is a direct-fit replacement for 1979-1987 Buick, Cadillac, Chevrolet, and Oldsmobile vehicles with 4.9L, 5.7L, and 6.6L engines.
Specifications:
| Voltage | 12 V |
| Terminal Type | Blade |
| Terminal Quantity | 4 |
| Terminal Gender | Male |
| Functions | Relay |
| Connector Shape | Rectangular |
| Connector Quantity | 1 |
| Connector Gender | Female |
| Amperage Rating | 20 A |
| Continuous Duty | No |
Fits: 1979-1987 Buick, Cadillac, Chevrolet, and Oldsmobile models including Century, Electra, Estate Wagon, LeSabre, Regal, Riviera, Commercial Chassis, Corvette and more — 4.9L, 5.7L, and 6.6L engines.
Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.
Interchanges With: KEM AR197, ACDelco 89057688, BWD R6000, Duralast 19875, General Motors 1616422, Airtex 1R1261, CARQUEST Premium by WELLS 56-1725, NAPA Echlin AR319 and 1 more