Ultra Plug Wire Set BBC Under V/C Black

The Moroso Ultra Plug Wire Set BBC Under V/C Black is specifically designed for big-block Chevrolet engines that utilize under-valve-cover distributor configurations. This complete ignition harness is essential for street, strip, and high-performance applications, ensuring reliable spark delivery even under extreme thermal stress. Whether you are working on a classic muscle car, a restomod, or a modern big-block swap, this wire set provides a dependable solution.

Constructed with high-silicone-core materials, the Ultra series wire set resists heat degradation and offers excellent EMI suppression. This design minimizes the risk of cross-fire in tight engine bays where heat from headers or the block can affect inferior wires. The black boot and jacket are engineered to reduce UV damage and maintain insulation integrity during continuous high-RPM operation.

This wire set is ideal for BBC engines, including 427, 454, 502, and stroker variants, commonly found in classic Chevrolet performance builds and LS-swap alternatives. Installation is straightforward, requiring routing of wires away from exhaust manifolds and turbocharged charge pipes, ensuring each terminal is seated firmly to prevent misfires during operation.