Quality-Built 140-39104 HD Heavy-Duty Remanufactured Alternator

The Quality-Built 140-39104 is a heavy-duty remanufactured alternator engineered to meet or exceed original equipment specifications. Built by Motor Car Parts of America (MPA), one of the world's largest remanufacturers of starters and alternators, this HD alternator is designed to handle demanding electrical loads and deliver dependable charging performance mile after mile.

Key Features:

• Heavy-Duty Construction: Re-engineered to withstand tough operating conditions, including extreme temperatures and variable electrical loads from modern vehicle accessories
• 100% End-of-Line Tested: Every unit is individually load-tested across a full range of operating requirements to ensure reliability before it ships
• OE-Quality Terminals: High-temp insulators and OE-spec terminals make connections secure and reliable
• Precision-Polished Slip Rings: Maximize output efficiency and long-term performance
• Electronically Tested Rotor: Coated with high dielectric insulation to ensure maximum durability and charging performance
• Electronically Tested Stator: Verified for maximum insulation quality and proper phase balance
• New Brushes and Springs: Installed to ensure extended service life and consistent charging performance
• Load-Tested Rectifier: Confirms alternator durability and reliable charging output
• Corrosion-Resistant Pulley: Plated or powder-coated for maximum protection against rust and corrosion
• Inspected Voltage Regulator: Tested for correct operating voltage to protect sensitive electronics

Quality-Built alternators are manufactured to strict QS-9000 quality guidelines — the highest standard achievable for automotive parts suppliers — making them the preferred choice among professional installers and confident DIYers alike.