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    Dealer-Level Diagnostic Software

    Professional tools for Volvo, CAT, Cummins & more. Includes instant download & free remote installation support.

    View All Software

    Featured products

    • CAT ET 2025A – Caterpillar Diagnostic Software With Remote Install & Factory Passwords

      CAT ET 2025A – Caterpillar Diagnostic Software With Remote Install & Factory Passwords

      CAT ET 2025A – Caterpillar Diagnostic Software With Remote Install & Factory Passwords

      Regular price $169.00 USD
      Regular price Sale price $169.00 USD
    • JPRO 2025 V2 – Complete Fleet Diagnostics | DPF Regen & Bi‑Directional Tests for All Makes

      JPRO 2025 V2 – Complete Fleet Diagnostics | DPF Regen & Bi‑Directional Tests for All Makes

      JPRO 2025 V2 – Complete Fleet Diagnostics | DPF Regen & Bi‑Directional Tests for All Makes

      Regular price $120.00 USD
      Regular price Sale price $120.00 USD
    • Caterpillar SIS 2021 (October) – Repair Manuals, Wiring & Parts – Full Offline Setup

      Caterpillar SIS 2021 (October) – Repair Manuals, Wiring & Parts – Full Offline Setup

      Sale

      Caterpillar SIS 2021 (October) – Repair Manuals, Wiring & Parts – Full Offline Setup

      Regular price $120.00 USD
      Regular price $499.00 USD Sale price $120.00 USD
      Sale
    • Volvo Premium Tech Tool 2.8.150 - Professional Remote Installation Service

      Volvo Premium Tech Tool 2.8.150 - Professional Remote Installation Service

      Volvo Premium Tech Tool 2.8.150 - Professional Remote Installation Service

      4.5 / 5.0

      (4) 4 total reviews

      Regular price $149.00 USD
      Regular price Sale price $149.00 USD
    • Cummins Insite 9.2 PRO (2025) - Full Offline Diagnostic Software + Remote Install

      Cummins Insite 9.2 PRO (2025) - Full Offline Diagnostic Software + Remote Install

      Sale

      Cummins Insite 9.2 PRO (2025) - Full Offline Diagnostic Software + Remote Install

      Regular price $249.00 USD
      Regular price $899.00 USD Sale price $249.00 USD
      Sale
    • Cummins Calterm V5.16 Engineering (2025) - Advanced ECM Programming Tool + Remote Setup

      Cummins Calterm V5.16 Engineering (2025) - Advanced ECM Programming Tool + Remote Setup

      Sale

      Cummins Calterm V5.16 Engineering (2025) - Advanced ECM Programming Tool + Remote Setup

      Regular price $199.00 USD
      Regular price $799.00 USD Sale price $199.00 USD
      Sale
    • Complete Diagnostic Package - Volvo PTT + Cummins Insite Pro (Bundle & Save)

      Complete Diagnostic Package - Volvo PTT + Cummins Insite Pro (Bundle & Save)

      Sale

      Complete Diagnostic Package - Volvo PTT + Cummins Insite Pro (Bundle & Save)

      Regular price $279.00 USD
      Regular price $448.00 USD Sale price $279.00 USD
      Sale
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    About Diag Master

    We help independent diesel mechanics and fleet owners skip the dealer.Get the same professional diagnostic software Caterpillar, Cummins, and Volvo dealerships use—installed remotely on your laptop in under 2 hours. No subscriptions. No trips to the dealer. Just full control over your diagnostics.

    Contact US

    📧 Email: diagmaster@zohomail.eu
    📱 Instagram: @diagmastertruck
    🌍 Remote Installation Worldwide • 24/7 SupportShare contact information, store details, and brand content with your customers.

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