Whether your truck is getting you to and from work, hauling equipment, towing your camper or carrying your family it has a job to do. Our job is to keep your truck dependable.
At Knox Performance Diesel & Offroad, we specialize in Ford Powerstroke diagnostics, repair, maintenance, and performance upgrades, including fuel systems, turbochargers, emissions systems, oil leaks, cooling systems, electrical concerns, and more
From the legendary 7.3L to the 6.0L, 6.4L, and today's 6.7L Powerstroke, our team has the experience, equipment, and continued training to properly diagnose and repair your truck.

Check engine lights, drivability concerns, electrical faults, hard starts, loss of power, and intermittent issues all start with proper diagnostics. We test the system and identify the cause before recommending repairs
From fuel contamination and injector concerns to CP4 failures and fuel filter housing leaks, we diagnoses and repair Powerstroke fuel system issues the right way.

Loss of power, overboost conditions, actuator faults, and turbocharger failures are common concerns we diagnose and repair on Powerstroke trucks
Cooling system concerns can quickly become expensive repairs. We diagnose coolant leaks, water pump failures, degas bottle issues, thermostats, and overheating concerns

From 6R140 and 10R140 transmission concerns to transfer case service and towing-related upgrades, we provide Powerstroke transmission diagnostics, maintenance, repair, and reliability upgrades.

Powerstroke oil leaks can come from several locations. We identify the source of the leak before recommending repairs.
We diagnose and repair DEF, DPF, EGR, NOx sensor, regeneration, and other emissions-related concerns on modern Powerstroke trucks.
From internal engine repairs to complete engine replacement and rebuild projects, our team diagnoses the failure and helps determine the right repair for your Powerstroke.

From worn steering components to suspension concerns and towing-related wear, we help keep your truck handling properly.

Turbos, injectors, lift pumps, tuning support, head studs, and supporting modifications for Powerstroke owners looking for more.

Modern Powerstroke trucks rely heavily on electronics and communication networks. We diagnose electrical and wiring concerns properly before replacing parts

Oil changes, fuel filters, transmission services, coolant flushes, differential services, and mileage based maintenance designed to keep your truck reliable.
Whether you need maintenance, diagnostics, repairs, or help tracking down an ongoing problem, schedule your Powerstroke with Knox Performance Diesel & Offroad.
Knox Performance Diesel and Off Road
126 South Park Street, Killeen, Texas 76541, United States