Key Only for MDS 55-003

The Key Only for MDS 55-003 is a replacement ignition key designed for marine fuel transfer systems and auxiliary power applications on boats and watercraft. If you've lost or damaged your original key, this OEM-spec replacement restores full functionality to your MDS system without requiring a complete unit replacement. Built to QUICKCAR RACING PRODUCTS standards, this key ensures reliable access to critical onboard fuel management and electrical systems that serious anglers and boaters depend on in the field.

This replacement key is engineered to match the original MDS 55-003 locking mechanism precisely, guaranteeing proper fit and secure operation in all weather and saltwater conditions. Weighing just 0.04 lbs and measuring 3.5 x 0.45 x 4.55 inches, the compact design fits seamlessly into standard marine ignition housings without modification. The key's durable construction resists corrosion and wear—critical performance factors for boaters operating in harsh freshwater and saltwater environments where standard keys often fail or deteriorate rapidly.

Anglers running larger fishing vessels, pontoon boats, or multi-engine rigs with auxiliary systems benefit most from keeping a spare key on hand, ensuring you're never stranded at the dock or away from your fishing grounds due to a lost or broken ignition key. Installation is straightforward—simply insert the key into your existing MDS 55-003 housing; no additional tools, adapters, or professional service required. Whether you're updating your backup supplies or replacing a worn original, this key only replacement is the reliable, cost-effective solution for maintaining full operational control of your marine fuel and power management system.