PBG3-4 - True Spec 4 Gauge 99.99% Oxygen Free Copper Wire Big 3 Amp Wiring Upgrade Kits for Car Audio Systems up to 200 Amps

The Echo Pro Big 3 Kit (PBG3-4) is a complete OFC wiring solution for upgrading the three most critical power connections in your vehicle's electrical system — battery ground to chassis, chassis to engine block, and alternator positive to battery positive. Built for systems up to 350A, this kit is engineered to eliminate headlight dimming and voltage drop caused by undersized factory wiring. All cables use true-spec 4 AWG oxygen-free copper for maximum conductivity and long-term reliability.

• Full OFC construction: True-spec 4 AWG oxygen-free copper cables deliver maximum current transfer with minimal resistance.
• Complete hardware included: Comes with seamless ring terminals, black nylon cable clamps, wafer head Tek screws, and zip ties — everything needed for a clean install.
• Seamless ring terminals: Three heavy-duty seamless ring terminals plus pre-terminated cable ends reduce resistance and improve connection integrity.
• Rated for systems up to 350A: Suitable for high-demand car audio builds that have outgrown factory electrical capacity.
• Flexible, durable insulation: Jacketing resists heat, vibration, corrosion, and abrasion in underhood and underbody environments.