Sierra 18-5820 Starter Solenoid for GM V-8 Marine Engines - Fits 450, 500, 500 Bulldog Models
Sierra 18-5820 Starter Solenoid for GM V-8 Marine Engines - Fits 450, 500, 500 Bulldog Models
The Sierra 18-5820 is a starter solenoid built for GM V-8 marine engines, applied across the 450, 500, and 500 Bulldog engine models within specific serial number ranges. The solenoid is a core component of the starting circuit, carrying the high-current load from the battery to the starter motor when the ignition is engaged. Sierra manufactures replacement marine electrical components to match original engine equipment fitment, and the 18-5820 is specified for GM V-8 powerplants used in the 450 (1995-1996, serial numbers F347100-F347277), 500 (1994-1997, serial numbers F213293 & Up), and 500 Bulldog (1990-1996, serial numbers C577254 & Up) applications. Confirming the engine model and serial number before ordering ensures the correct solenoid is installed, since other GM V-8 engine variants such as the 454 Mag. Use different Sierra part numbers. The unit weighs 0.35 pounds and carries UPC 030999875914 for retail identification.
Specifications
- Brand: Sierra
- Manufacturer Part Number: 18-5820
- Product Name: Solenoid
- Component Type: Starter Solenoid
- Engine Type: GM V-8
- Weight: 0.35 pounds
- UPC: 030999875914
Fitment
- 450 GM V-8, 1995-1996, serial numbers F347100-F347277
- 500 GM V-8, 1994-1997, serial numbers F213293 & Up
- 500 GM V-8, 1994-1995, serial numbers F213293 & Up
- 500 Bulldog GM V-8, 1990-1996, serial numbers C577254 & Up
Replaces (OEM)
No OEM cross-reference numbers are published for the Sierra 18-5820.
Frequently Asked Questions
What engines does the Sierra 18-5820 solenoid fit? The Sierra 18-5820 fits GM V-8 marine engines in the 450, 500, and 500 Bulldog model lines, within specific serial number ranges for each model.
How much does the 18-5820 solenoid weigh? The Sierra 18-5820 starter solenoid weighs 0.35 pounds.
What years does the 18-5820 cover for the 450 model? For the 450 GM V-8 engine, the Sierra 18-5820 is specified for the 1995-1996 model years, serial numbers F347100 through F347277.
Does the 18-5820 fit the 500 GM V-8 engine? Yes, the 500 GM V-8 engine uses the Sierra 18-5820 solenoid, covering the 1994-1997 model years with serial numbers F213293 and up.
Is there a difference between the 500 and 500 Bulldog applications? Both the 500 and 500 Bulldog GM V-8 engines use the Sierra 18-5820 solenoid, but the 500 Bulldog covers the 1990-1996 model years starting at serial number C577254, while the standard 500 covers 1994-1997 starting at serial number F213293.
Will the 18-5820 fit a 454 Mag. Engine? No, the 454 Mag. GM V-8 engine uses different Sierra solenoid part numbers (18-5816 or 18-5817 depending on model year), not the 18-5820.
What is the UPC for the Sierra 18-5820 solenoid? The UPC for the Sierra 18-5820 starter solenoid is 030999875914.
What material is the 18-5820 solenoid made from? Sierra does not publish a material specification for the 18-5820 solenoid.
Are there OEM cross-reference numbers for the 18-5820? No OEM cross-reference or replaces numbers are published for the Sierra 18-5820 solenoid.
What function does the 18-5820 solenoid perform in the engine? As a starter solenoid, the 18-5820 carries the high-current load from the battery to the starter motor when the ignition circuit is engaged, on applicable GM V-8 marine engines.
How do I confirm the 18-5820 is correct for my engine? Match your GM V-8 engine model (450, 500, or 500 Bulldog) and its serial number against the ranges specified for the Sierra 18-5820: F347100-F347277 for the 450, F213293 & Up for the 500, and C577254 & Up for the 500 Bulldog.