The JAS diode trio offers a reliable replacement for Delco Si series alternators, restoring the rotor excitation supply and stabilising charging performance. This compact assembly contains three high temperature silicon diodes mounted on a heat resistant substrate with robust epoxy sealing, engineered to meet OEM style specifications and resist vibration and heat typical in automotive charging systems. It is designed for direct bolt in replacement to simplify alternator repairs and rebuilds and to eliminate intermittent charging faults caused by failed trio diodes.

• Application: suited to Delco 10Si, 12Si, 15Si, 17Si and 20Si alternator platforms
• Construction: three high temperature silicon diodes with heat resistant carrier and epoxy encapsulation
• Function: restores rotor excitation circuit and supports reliable battery charging
• Fitment: direct replacement form and mounting for straightforward installation
• Benefits: improves charging stability, reduces electrical faults, ideal for alternator rebuilding

Please confirm alternator compatibility using the Parts Checker before purchase as vehicle systems vary. Professional installation or workshop tools are recommended to ensure correct assembly and torque. This diode trio is intended for use in automotive alternator repairs and replacement applications where original Delco Si series trio components are required.