Improves 1G alternator life and function at high RPM.
 
•Fits 1G Alternator or for Custom Application.
•15mm bore,  88mm OD,  20mm thick
•Improves alternator life and function at high engine RPM.
•Tall outer edges improve belt retention / tossing.
•25% underdrive still charges at idle under 1000 RPM. 
•Hard-Coated aluminum finish. 
•For stock position use with Gates Serpentine Belt #K040405 (not included).
•100% Made in the USA.
•Parts Normally Ship the Next Business Day.