Replacement Starter Solenoid

This replacement starter solenoid is engineered to provide reliable ignition performance for Volvo Penta marine diesel engines, specifically designed as a direct replacement for the MD21B model and compatible with related AQD21A and AQD21B engine variants. The solenoid meets OEM specifications and serves as a cost-effective alternative to original equipment, making it ideal for marine operators, boat maintenance facilities, and industrial engine service centers requiring dependable starter system components. The solenoid is constructed to exacting standards and replaces a comprehensive range of original part numbers including 580204, 580205, 580215, 580261, 580297, and multiple VALEO cross-reference numbers, ensuring compatibility across various Volvo Penta engine configurations and vintage installations. This versatility makes it particularly valuable for inventory management in multi-engine service operations where standardization on quality replacement parts reduces downtime and simplifies logistics. Weighing 1.79 lbs, this component is compact and designed for straightforward installation, allowing technicians to restore engine starting function efficiently during routine maintenance or repair operations. The solenoid functions as a critical electromagnetic switch that engages the starter motor, making it essential for reliable cold-weather starting and demanding marine duty cycles where engine performance directly impacts operational productivity and safety. Suitable for commercial marine applications, industrial generator sets, and backup power systems utilizing Volvo Penta diesel engines, this replacement solenoid delivers consistent performance across extended service intervals. It represents a practical solution for fleet operators and service departments maintaining multiple vessels or equipment, offering both cost savings and reliable functionality without compromising OEM-equivalent quality standards.