Part Number: 18-5312-1
Sierra 18-5312-1 Marine Distributor – Ford 351 V8
Bring your ignition system back to life with the Sierra 18-5312-1 Distributor for Ford 351 V8 marine engines. Designed as a complete replacement for worn or outdated units, this distributor delivers accurate timing and consistent spark—helping eliminate hard starts, misfires, and uneven idle.
Built for marine use, it’s engineered to handle the heat, vibration, and moisture found in engine compartments while maintaining dependable performance over time. The electronic ignition design provides smooth, reliable spark delivery without the maintenance associated with older points-style systems, making it a solid upgrade for many classic inboard engines.
This distributor is designed for Ford 351 Windsor-based marine engines commonly used by PCM and Indmar, making it a popular choice for restoring performance on older ski and wake boats.
Common Engine & Boat Fitments
Compatible with Ford 351 V8 marine engines found in many inboard boats from the late 1980s through early 2000s, including:
- Supra Sunsport, Supra Comp, and Supra Saltare
- Supra Mariah and early Supra Launch models
- Moomba Outback, Moomba Mobius, and Moomba Outback LS
- Correct Craft Ski Nautique and Sport Nautique (PCM-powered)
- MasterCraft ProStar 190 and ProStar 205 with Ford 351 engines
- Malibu Sunsetter and Malibu Response (Ford PCM/Indmar applications)
These engines were widely used across direct drive and V-drive configurations, making this distributor a common replacement part for many classic inboard setups.
Fitment can vary based on ignition type and engine configuration, so confirming compatibility with part number 18-5312-1 and your specific engine is recommended before ordering.
Key Features
- Complete marine distributor assembly for Ford 351 V8 engines
- Electronic ignition design for improved reliability and performance
- Restores proper timing and consistent spark delivery
- Reduces maintenance compared to points-style systems
- Durable construction built for marine environments
If your boat is experiencing ignition issues or you’re upgrading from an older distributor, the Sierra 18-5312-1 provides a straightforward, dependable solution. It’s an easy way to restore smooth operation and keep your Ford 351-powered boat running strong every time you head out on the water.