Deutsch DT 3-Pin Waterproof Connector – DT06-3S (Female) / DT04-3P (Male) | IP67 Heavy-Duty Sealed Plug

The Deutsch DT series is the global benchmark for heavy-duty waterproof connectors in truck, agricultural, construction, and motorsport wiring harnesses. This listing covers the DT06-3S (female / socket housing) and DT04-3P (male / plug housing) — the 3-pin variant of the DT series. Uses Size 16 (1.6mm) contacts in black nylon housing with a triple-sealing system: individual wire seals on each terminal cavity, a wedge lock (secondary lock) to prevent terminal back-out, and a silicone face seal between the mated connector halves. IP67-rated — suitable for continuous immersion in water up to 1 metre depth.

Unlike standard automotive connectors that rely on a single housing seal, the DT series is engineered for the most demanding environments: mining, agriculture, marine, motorsport, and military applications where connector failure is not an option.

Deutsch DT Series Triple-Seal System

• Individual wire seals — each terminal cavity has its own silicone wire seal, providing IP67 protection even if the face seal is damaged
• Wedge lock (secondary lock) — a plastic wedge inserted behind the terminals prevents terminal back-out under vibration and pull force
• Face seal — a silicone seal between the mated male and female housings provides the primary waterproof barrier

Deutsch DT Part Number Reference

Key Specifications

Compatible Applications

• Heavy-duty trucks (Cummins / Caterpillar / Volvo / Scania / DAF) – ECU, sensor, and actuator harness
• Agricultural equipment (John Deere / Case / New Holland / AGCO / Claas) – ECU and implement harness
• Construction equipment (Caterpillar / Komatsu / Hitachi / Liebherr) – Sensor and solenoid valve connector
• Motorsport / custom wiring harnesses – Waterproof sensor, actuator, and power distribution
• Marine applications – Engine management and navigation system connector
• Military / defence equipment – Mission-critical sealed harness connector

Frequently Asked Questions

Q: What is the difference between DT06-3S and DT04-3P?
A: DT06-3S is the female (socket) housing — it goes on the harness side and accepts male (pin) contacts (0462 series). DT04-3P is the male (plug) housing — it goes on the component or device side and accepts female (socket) contacts (0460 series). The two housings mate together to form a complete sealed connector.

Q: What wire gauge is compatible?
A: Deutsch Size 16 contacts are compatible with 20–16 AWG wire (0.5–1.5mm²). For higher current applications, use Size 12 contacts with the DT series 2-pin or 4-pin housings.

Q: Are terminals included?
A: Yes, terminals are included with all variants.