This 21-way MCP male connector is the largest configuration in ONE AT A TIME GROUP’s full 6-way to 21-way MCP connectivity range, designed for high-density automotive wiring applications where multiple circuits need to be routed through a single, reliable connection point — common in ECU harnesses, body control modules, and complex multi-circuit wiring setups.
Moulded in PA 6/66 nylon (brown), this connector is built to handle the heat, vibration, and long-term mechanical stress typical of engine bay and under-dash wiring environments. PA 6/66 is a widely used automotive-grade nylon chosen specifically for its heat resistance and durability under continuous flex and vibration — not a generic plastic housing that degrades or becomes brittle over time.
Terminals are included with this connector, so it’s ready to wire without needing to separately source and match terminal pins to the housing — a common point of error when connectors and terminals are bought from different suppliers or batches.
Because this is part of a full connectivity range (6-way through to 21-way), it’s straightforward to standardise your wiring harness design across multiple circuit densities using the same connector family and terminal type, rather than switching between incompatible connector systems as circuit count changes.
As with all ONE AT A TIME GROUP components, samples and spec sheets are available on request if you’d like to confirm fitment before committing to a bulk order.
