Proformance Diagnostics – Diesel Truck Diagnostic Tools. Premium heavy-duty diagnostic equipment for Cummins, Detroit Diesel, Paccar, Volvo, and Mack engines.
The Advanced Diagnostic Tool For Truck Drivers
More Than Just a Regen Tool
NOx Sensor Tester
Advanced Diagnostics
NOx Sensor Tester + Fast Testing + Save Time
Trusted by 500,000+ Users Worldwide
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Join our network to grow your business. Partner with Proformance Diagnostics and gain access to innovative diagnostic solutions, dealer-only benefits, and ongoing support designed to help you expand your reach and increase revenue.
Find Your Use Case
Owner-Operators
Know in seconds if it's safe to drive — no guessing, no waiting.
Fleet Maintenance Teams
Cut diagnostic time from hours to minutes and catch issues early.
Mobile Diesel Mechanics
Run OEM-level diagnostics on-site without a laptop.
Used Truck Inspections
Pull fault codes and negotiate with data, not gut feel.
Featured Articles & Latest News
All Articles
NOX Sensor
How to Find Your NOx Sensor Part Number
Buyer's Guide
OTR Diagnostics vs Proformance Link
New Versions & Features
Proformance link:Update: New Versions & Features
Why Choose Proformance?
500K+ Global Users
30-Day Money-Back Guarantee
1-Year Limited Warranty
5.0 Google Rating
Lifetime Customer Support
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