Connect modern 9-pin diagnostic tools to older 6-pin diesel vehicles — on-road or off-road.

This 9-pin to 6-pin converter adapter is essential for any technician or fleet working on a mix of older and newer vehicles. It enables your J1939 (9-pin) diagnostic adapter to connect to J1708 (6-pin) ports commonly found on legacy semi trucks and off-highway equipment.

Key Features:

• Converts 9-pin (J1939) to 6-pin (J1708)

• Compatible with Nexiq USB-Link, DG Tech, Inline, and other adapters
  

• Supports diagnostics on semi trucks, buses, construction equipment, and more

• Built for durability – molded connectors with reinforced strain relief

Works With:

• Freightliner, Kenworth, Peterbilt, International

• Construction and agricultural equipment with 6-pin connectors

• Diesel trucks built before full J1939 implementation

Why You Need It:

Many 6-pin trucks are still in operation — this adapter lets you use your existing 9-pin diagnostic tool to cover older diesel platforms without needing multiple interfaces.

Perfect for:

• Mobile diesel techs

• Shops servicing mixed fleets

• Off-road equipment mechanics