Quality-Built 8550603 Remanufactured Alternator 145 Amp 12V

The Quality-Built 8550603 is a professional-grade remanufactured alternator designed to deliver reliable charging performance for GM trucks and SUVs. This 145-amp, 12-volt unit features a Delco design with an internal regulator, internal fan, 6-groove serpentine pulley, and clockwise rotation at 3:00 clock position. Quality-Built alternators are engineered to meet or exceed original equipment specifications, making them an ideal replacement for professional installers and DIY enthusiasts alike.

Key Features:

• Every component prone to normal wear is replaced with a new component during remanufacture, regardless of condition
• 100% end-of-line tested and produced in IATF-16949 certified facilities
• Manufactured under strict QS-9000 quality guidelines, the highest quality standard achievable for automotive parts suppliers
• Free support from live ASE-certified technicians available on all product lines
• Unmatched quality and coverage manufactured to meet or exceed OE fit and performance specifications

Completed units are individually tested on proprietary load-based testers across a full range of operating requirements, ensuring dependable performance and maximum reliability. OEM cross-reference numbers include 20881337, 25968616, 8400207, and 8550.