1 WAY PLUG CONNECTOR-SKT

MS3456L20-2P — 1-Way Mil-Spec Cable-Mount Plug Connector for Motorsport Single-Circuit Bulkhead Pass-Through

The MS3456L20-2P is a 1-way MIL-C-26482 circular cable-mount plug connector for motorsport and high-performance vehicle wiring applications requiring a single-circuit sealed bulkhead or panel feedthrough. Used as a pair with the corresponding MS3450 flanged receptacle, this connector provides a robust, vibration-resistant sealed junction for individual circuits that must penetrate a chassis panel, firewall, or bulkhead — such as a sensor feed, actuator supply, or safety circuit isolation point.

1-Way Connector — Single Circuit Applications

Single-circuit circular connectors are used in motorsport wiring where one specific circuit requires its own dedicated bulkhead feedthrough — most commonly for safety-critical or high-current circuits that benefit from physical isolation from the main harness bundle. Typical applications include fuel pump primary supply feeds, single-function sensor signal feedthroughs, fire suppression trigger circuits, and dedicated battery-to-engine-bay feeds. The mil-spec construction provides the same environmental sealing and vibration resistance as larger multi-way variants in the same series.

Mating Pair: MS3456L20-2P with MS3450

This cable-mount plug forms one half of a two-part assembly with the MS3450 flanged receptacle. The complete pair provides a sealed, keyed circular connection that cannot be mated incorrectly, ensuring polarity discipline is maintained even during rapid service in the engine bay.

MIL-C-26482 Standard

Built to MIL-C-26482, this connector shares the proven construction used across the MS3450/MS3456/MS3470/MS3474 families: aluminium alloy shell, standardised contact accessories, and environmental sealing suitable for motorsport under-bonnet and chassis applications.

Available from Arctic Performance Parts

Arctic Performance Parts stocks MS3456 and MS3450 connectors to support professional harness builders and motorsport workshops across Scandinavia. Lead time is 1–2 weeks for quantities beyond current stock. Our team can advise on compatible contacts and tooling.