AS,21 WAY,PLG,PIN,A KEY,YELLOW

Deutsch Autosport AS 21-Way Plug — Pin (Male) — Yellow Key (A)

The Deutsch Autosport AS 21-Way Plug Pin (Male) Connector with Yellow (A) Keying Insert — SKU: AS622-21SA is a professional MIL-spec-grade Deutsch Autosport AS series connector for 21-circuit ECU sub-harness connectors and mid-high-range motorsport loom separable points in race cars and high-performance vehicles across Norway, Sweden, and Denmark. As a plug connector, the 21-way AS is a free, cable-mounted plug half for ECU sub-loom and PDM circuit interface separable joins requiring exactly 21 circuits.

Deutsch Autosport AS 21-Way — Series Design and Circuit Application

The Deutsch Autosport AS series is the professional standard circular connector format for motorsport wiring — featuring an aluminium alloy shell machined to MIL-spec tolerances, gold-plated contact interfaces for consistent low-resistance electrical performance across the connector’s service life, and a positive push-pull locking mechanism that holds secure under sustained race vibration and rapid connector cycling at service intervals. The 21-way AS sits between the popular 19-way and 22-way — used when the circuit count requirement falls precisely at 21 circuits, where 19 falls short and the 22-way adds unnecessary bulk.

Pin (Male) — 21-Circuit Contact Array

This listing is the pin half of the 21-way AS plug pair. Twenty-one gold-plated pin contacts transfer twenty-one individual circuits — the active array of this mid-high-density AS separable join. The corresponding socket half of the same circuit count and key colour is required to complete the mated connector pair — both halves must be ordered to form a functional separable join. AS contacts are ordered separately; select the correct contact part number for your wire gauge and current requirements.

Yellow Key (A) — Keying Position and Mis-Mate Prevention

Yellow A is the first key assigned in any AS plug harness keying plan. When a harness includes multiple 21-circuit AS plug connectors at the same separation point — for example, where two parallel 21-circuit cable bundles each have their own plug connector mating into a fixed receptacle panel — keying ensures each plug can only connect to its own correct receptacle, preventing cross-connection during harness assembly and race event connector operations. The Yellow A key tab on this plug half ensures it accepts only a matching Yellow A-keyed mating half — making it the primary connector in any multi-pair 21-circuit AS plug arrangement. Professional harness builders across Norway, Sweden, and Denmark standardise on Yellow A as the primary key for consistency across multiple builds.

Plug Configuration — The Movable, Cable-Mounted Connector Half

The AS plug configuration is a free, cable-mounted connector half — it does not mount to a panel or chassis surface. Instead, the plug is the movable, harness-side half that disconnects from a fixed receptacle (either a flange-mounted panel connector or a corresponding inline half) to allow component removal, harness separation, and servicing. The plug carries the cable bundle from the removable component or sub-harness and mates into the fixed chassis-side or loom-side receptacle when the system is assembled.

The 21-way AS plug is used for 21-circuit ECU sub-loom and PDM interface removable joins in race cars and performance vehicles across Norway, Sweden, and Denmark. The plug format is specified wherever one connector half must be freely movable — for example, at engine removal points where the engine-side harness plug disconnects from the chassis-side flange, at removable dashboard assemblies where the instrument harness plug mates into a fixed bulkhead connector, and at any harness separation point where the plug side follows a removable component when it is extracted from the vehicle.

Unlike flange or inline connectors that create a two-sided free connection, the AS plug is always the movable half in a plug-to-receptacle pair — providing the connector architecture needed for clean, repeatable component removal and installation across the race service life of the vehicle.

Technical Specifications

• Series: Deutsch Autosport AS
• Circuits: 21-way
• Configuration: Plug
• Contact type: Pin (Male)
• Key colour: Yellow (Key A)
• Shell material: Aluminium alloy
• Operating temperature: -65°C to +175°C
• Locking: Push-pull positive lock
• Typical application: Primary connector — first assigned key when two or more same-circuit-count as connectors share a harness separation point