BAK42BK,BB1D,R500X1D. Rockford Fosgate R2-500X1. Rockford Fosgate. Rockford Fosgate R2-500X1 Manual. Maximum Input Gauge Size 4 AWG. 1.0 Farad Power Capacitor. Belva 1.0 Farad Capacitor. 1.0 Farad Capacitor with Digital Red Display.
eBay