BBM 8.5mm Plug Wire Set

The MSD 32739 BBM 8.5mm Plug Wire Set is a super conductor spark plug wire kit engineered for Mopar B and RB-series engines. This complete set features 8.5mm diameter wire with spiral core construction and red insulation, paired with straight plug boots and HEI-style terminals. The super conductor wire design minimizes electrical resistance and signal loss, delivering consistent spark energy to each cylinder for reliable ignition performance across a wide RPM range.

The 8.5mm wire diameter provides the right balance of conductivity and flexibility for vintage and stroker big-block Mopar applications. Spiral core construction resists electromagnetic interference and radio frequency noise, critical for consistent timing on carbureted and early fuel-injected B and RB engines. The straight plug boots ensure a firm, secure connection at the spark plug, while HEI-style terminals mate reliably with distributor cap towers. This configuration is purpose-built for the electrical demands of high-displacement Mopar powerplants where spark quality directly impacts throttle response and fuel economy.

Buyers restoring or maintaining original-spec Mopar muscle cars, street rods, and performance trucks with B or RB-series engines choose MSD ignition systems for proven durability under sustained engine load. This plug wire set is the direct replacement option for stock wire sets that degrade over time. Proper wire routing and secure connections are essential when upgrading ignition components; MSD's terminal design ensures compatibility with both original and aftermarket distributor caps.

MSD Ignition's plug wire systems are recognized in the performance engine community for delivering consistent spark under high RPM conditions. The 8.5mm super conductor wire is a step above standard copper-core wire in noise suppression and electrical efficiency, making it a practical upgrade for drivers who demand reliable cold starts and steady cruise performance alongside weekend performance driving.