Quality-Built 173-55201 HD Remanufactured Heavy Duty Alternator

The Quality-Built 173-55201 is a heavy-duty remanufactured alternator engineered to meet or exceed original equipment (OE) specifications. Designed for demanding applications where standard alternators fall short, this HD unit delivers reliable, high-output charging performance for vehicles with elevated electrical loads.

Quality-Built alternators are remanufactured in ISO/TS 16949 certified manufacturing facilities using lean cell manufacturing processes and are 100% end-of-line tested before leaving the factory — ensuring every unit performs to specification right out of the box.

Key Features:

• Heavy-Duty (HD) Construction — built to handle higher electrical demands than standard OE alternators
• 100% end-of-line tested for correct voltage output and charging performance
• Electronically tested rotor sealed with high-dielectric insulation coating for maximum durability
• 100% new lead-free premium brushes for optimum performance and extended service life
• All-new premium bearings packed with high-temperature grease to reduce heat and friction
• Electronically tested stator for maximum insulation quality and phase balance
• Load-tested rectifiers to ensure consistent alternator durability and charging output
• Precision-polished slip rings for maximum output efficiency
• 100% tested voltage regulator for correct and stable operating voltage
• Corrosion-resistant pulley — plated or powder coated for long-term protection
• OE-quality terminals with high-temp insulators for secure, reliable connections
• Mounting threads inspected and re-tapped for easy installation and consistent torque

Manufactured by Motor Car Parts of America (MPA), one of the world's largest remanufacturers of automotive starters and alternators, Quality-Built HD alternators are the preferred choice of professional installers who demand first-time fit and long-term reliability.