The MPA 6490S MA Starter Motor is a 12 volt permanent magnet gear reduction starter designed for heavy duty applications Manufactured by Motorcar Parts of America MPA this starter motor is engineered to meet or exceed Original Equipment OE performance specifications ensuring reliable and efficient engine starting in demanding environments MPA s commitment to quality is evident in the comprehensive testing procedures performed on their proprietary in house designed and built computerized testers which are renowned throughout the industry for their durability and performance The 6490S MA model features lead free brushes oversized bearings pressure fit high capacity diodes precision polished slip rings and double insulated rotors and stators all contributing to its superior performance and longevity These enhancements address common operational challenges such as brush wear bearing failure diode overheating electrical arcing and insulation degradation thereby reducing maintenance costs and downtime for fleet operations By integrating advanced materials and design features the MPA 6490S MA Starter Motor offers a robust solution for fleets seeking to optimize their vehicle reliability and operational efficiency