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DB15 Cable to 6-Pin & 9-Pin J1939 Diagnostic Y-Splitter

A professional OEM-style splitter cable designed for heavy-duty commercial vehicles. It converts a standard DB15 female interface into both a 6-pin and a 9-pin round diagnostic connector, allowing mechanics to connect diagnostic tools to multiple truck engine standards. Widely compatible with CAT ET-3 and various J1939/J1587 systems.

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DB15 Cable to 6-Pin & 9-Pin J1939 Diagnostic Y-Splitter

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Product Detail

This versatile DB15 to 6-Pin & 9-Pin Y-splitter cable is specifically manufactured for heavy-duty truck diagnostics. It allows technicians to connect a main diagnostic unit to either a 6-pin (J1587/J1708) or a 9-pin (J1939) port on the vehicle, ensuring compatibility across a wide range of commercial vehicles, including Caterpillar machinery and other heavy-duty fleets.

Accurate Specifications & Features:

  • Connectors: 1x DB15 Female connector (with thumb screws) + 1x 6-Pin Round Male connector (Grey/Black) + 1x 9-Pin J1939 Male connector (Black) .
  • Cable Length: 1.5 Meters (approx. 5ft), allowing flexible positioning of diagnostic devices.
  • Cable Design: A rugged Y-configuration (1 to 2 split) with an integrated molded splitter hub to protect the internal wiring from stress and environmental damage.
  • Material: Constructed with high-purity copper conductors for stable signal transmission, encased in a durable, oil-resistant, and heat-resistant flexible PVC jacket.
  • Corrosion Resistance: Features high-quality gold or nickel-plated contacts to ensure a secure, vibration-proof connection in harsh working environments.

Key Benefits & Applications:

  • Multi-Standard Compatibility: Serves as an essential bridge for accessing both legacy 6-pin (J1587/J1708) and modern 9-pin (J1939) CAN bus networks.
  • Tool Compatibility: Perfectly matches the pinouts for CAT Electronic Technician (ET) and Comm Adapter 3 interfaces.
  • Professional Grade: Engineered for daily use in truck repair workshops, fleet maintenance, and field service diagnostics.
  • Plug and Play: No hardwiring required; simply connect the DB15 to your diagnostic tool and plug the desired round connector into the truck's ECU port.


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Product Detail

This versatile DB15 to 6-Pin & 9-Pin Y-splitter cable is specifically manufactured for heavy-duty truck diagnostics. It allows technicians to connect a main diagnostic unit to either a 6-pin (J1587/J1708) or a 9-pin (J1939) port on the vehicle, ensuring compatibility across a wide range of commercial vehicles, including Caterpillar machinery and other heavy-duty fleets.

Accurate Specifications & Features:

  • Connectors: 1x DB15 Female connector (with thumb screws) + 1x 6-Pin Round Male connector (Grey/Black) + 1x 9-Pin J1939 Male connector (Black) .
  • Cable Length: 1.5 Meters (approx. 5ft), allowing flexible positioning of diagnostic devices.
  • Cable Design: A rugged Y-configuration (1 to 2 split) with an integrated molded splitter hub to protect the internal wiring from stress and environmental damage.
  • Material: Constructed with high-purity copper conductors for stable signal transmission, encased in a durable, oil-resistant, and heat-resistant flexible PVC jacket.
  • Corrosion Resistance: Features high-quality gold or nickel-plated contacts to ensure a secure, vibration-proof connection in harsh working environments.

Key Benefits & Applications:

  • Multi-Standard Compatibility: Serves as an essential bridge for accessing both legacy 6-pin (J1587/J1708) and modern 9-pin (J1939) CAN bus networks.
  • Tool Compatibility: Perfectly matches the pinouts for CAT Electronic Technician (ET) and Comm Adapter 3 interfaces.
  • Professional Grade: Engineered for daily use in truck repair workshops, fleet maintenance, and field service diagnostics.
  • Plug and Play: No hardwiring required; simply connect the DB15 to your diagnostic tool and plug the desired round connector into the truck's ECU port.


DB15 Cable to 6-Pin & 9-Pin J1939 Diagnostic Y-Splitter
A professional OEM-style splitter cable designed for heavy-duty commercial vehicles. It converts a standard DB15 female interface into both a 6-pin and a 9-pin round diagnostic connector, allowing mechanics to connect diagnostic tools to multiple truck engine standards. Widely compatible with CAT ET-3 and various J1939/J1587 systems.
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DB15 Cable to 6-Pin & 9-Pin J1939 Diagnostic Y-Splitter

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MaiRong Tech

Electronic Cable&Connector

Professional supplier of in-stock electronic cables and connectors. No custom orders — just quality standard products ready to ship.


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