Automotive Crimp Connector Terminal – DJ228DE-4, 4mm Female Crimp Contact for Auto Wiring Harness

DJ228DE-4 is a Chinese standard designation for a 4mm female crimp automotive terminal used in medium-current wiring harness applications. The DJ228 series covers a range of automotive crimp terminals; the “DE” suffix indicates the contact geometry variant; “4” refers to the 4mm contact pitch. These terminals are used in connector housings for medium-current circuits — between the 2.8mm signal terminals and the 6.3mm high-current terminals — covering applications such as motor connections, heating elements, and medium-current power distribution.

Key Specifications

• Part Designation: DJ228DE-4 (Chinese standard)
• Contact Type: Female crimp terminal (socket contact)
• Contact Pitch: 4mm
• Wire Range: 0.5–2.0mm² (20–14AWG)
• Current Rating: 10–15A per contact
• Contact Material: Copper alloy, tin-plated
• Application: Medium-current automotive wiring harness connections

DJ228 Terminal Series — Pitch Reference

• DJ228-2.8: 2.8mm pitch, for signal and low-current circuits (up to 10A)
• DJ228DE-4 (this product): 4mm pitch, for medium-current circuits (10–15A)
• DJ228-6.3: 6.3mm pitch, for high-current circuits (25–30A+)
• Always match the terminal pitch to the existing connector housing cavity size. Terminals of different pitches are not interchangeable.

Frequently Asked Questions

What applications use 4mm automotive terminals?

4mm terminals are used for medium-current circuits that exceed the 2.8mm series rating but do not require the full 6.3mm series capacity: (1) Electric window regulators — motor current 5–10A. (2) Cooling fan motors — low-speed fan current 8–12A. (3) Heated seats — seat heater element current 8–12A. (4) Fuel pump relay connections — relay contact current 10–15A. (5) Horn relay contacts — horn current 5–10A.

What crimp tool is required for DJ228DE-4 terminals?

Use a ratchet crimp tool with dies sized for 4mm automotive terminals and the wire gauge being used. The correct die produces a crimp that meets the terminal’s pull-out force specification. Using the wrong die produces an incomplete crimp that fails under vibration. For 4mm terminals with 1.5–2.0mm² wire, a standard automotive ratchet crimp tool with the appropriate die is adequate.

How do I identify the correct terminal for my connector?

Measure the contact cavity pitch in the connector housing (distance between contact centers). If the pitch is approximately 4mm, DJ228DE-4 terminals may be compatible. Verify by cross-referencing the connector housing part number with the manufacturer’s catalog to identify the specified terminal. Do not assume compatibility based on pitch alone — the contact geometry must also match the housing cavity.

Typical Applications

• Window regulators: Motor power terminal replacement
• Cooling fans: Fan motor connector terminal replacement
• Heated seats: Seat heater element terminal replacement
• Relay connections: Fuse/relay box medium-current terminal replacement
• Automotive workshops: Workshop stock for medium-current terminal repairs

Package Contents

Automotive crimp terminals, DJ228DE-4 (quantity as selected). Connector housing not included.