Deutsch Autosport ASU (Ultra-Miniature) Series — 3-Way Plug Socket (Female)
The Deutsch Autosport ASU 3-Way Plug Socket (Female) — Yellow Key (A) — SKU: ASU603-03SA-HE is a genuine MIL-spec-grade cable-mounted plug connector for 3-circuit sensor, actuator, and switch sub-harness separable joins in professional race cars, rally, hillclimb, and high-performance builds across Norway, Sweden, and Denmark. This is the socket half of the mated pair — Pin (Male) must be ordered separately to complete the join.
Shell and Circuit Count — ASU603, 3-Way
The ASU series is the smallest-format circular connector in the Deutsch Autosport family, designed for ultra-compact sensor sub-assemblies, low-channel signal interfaces, and weight-critical race car loom builds where the standard AS or ASX body is too large. The ASU603 is the ASU603 — ultra-miniature plug (free cable-mounted half) of the ASU connector pair. At 3 circuits, this connector is suited to 3-circuit sensor, actuator, and switch sub-harness separable joins. Common applications include 3-wire sensor assemblies (MAP, TPS, CLT, IAT), individual coil-on-plug sub-connectors, 3-wire actuator feeds, and small auxiliary circuit groupings.
Yellow Key (A) — Mis-Mate Protection
Yellow A is the first key assignment in the Deutsch Autosport keying system. It marks the primary 3-circuit ASU plug bundle at a separation point — the one disconnected and reconnected most often during race preparation and servicing. Where only one 3-circuit pair exists at the split, Yellow A is always the correct choice. It ensures consistent harness identification across multiple builds and events in Norway, Sweden, and Denmark.
Plug Half — Free Cable-Mounted Connector
The plug is the removable, cable-mounted half of the connector pair — the half the technician handles and disconnects during harness separation. It mates with a fixed socket or flange-mount body to complete the separable interface. The push-pull locking collar engages with the fixed socket, creating a positive, vibration-resistant mated connection. Plug halves are supplied by Arctic Performance Parts to harness builders and race teams across Norway, Sweden, and Denmark.
Technical Specifications — ASU603-03SA-HE
- Series: Deutsch Autosport ASU
- Shell: ASU603
- Circuit count: 3-way
- Configuration: Plug (plug (free cable-mounted half))
- Contact type: Socket (Female)
- Key colour: Yellow (Key A)
- Shell material: Aluminium alloy, MIL-spec machined
- Contact plating: Gold over nickel
- Operating temperature: −65°C to +175°C
- Locking: Push-pull positive lock collar
- Contacts: Ordered separately — not included
- Mating half required: Pin (Male), same circuit count, shell, and key colour
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