STAY CARB COMPLIANT

Clean Diesel Specialists is a certified CARB Clean Truck Check testing facility. 

Stay compliant and get our mobile fleet service plan.

What We Do

At Clean Diesel Specialists, we provide comprehensive diesel services for all diesel-powered vehicles, including on and off-road, light to heavy-duty trucks, transit, and service vehicles. Specializing in CARB compliance, we offer mobile and in-shop solutions for diesel emissions testing, system diagnostics, preventive maintenance, repairs, and fleet services, ensuring that your vehicles meet California’s stringent emission standards while operating at peak performance. With over 15 years of industry expertise and a client roster that includes Amazon, Enterprise, Ryder, and Penske, we are committed to delivering reliable, high-quality service to keep your diesel fleet running smoothly.

Diesel Services

Service for all diesel-powered equipment including the full spectrum of on, off road, light to heavy duty, passenger, transit and service vehicles.

System Diagnosis & Repair

A full range of diesel emission cleaning, diagnostics, maintenance, repair and compliance services including removal, replacement, pickup, delivery and opacity testing.

DPF and DOC Cleaning

DPF and DOC cleaning practices that restore filters to perform in a “like new” condition.

Mobile Service

Mobile and In Shop Services.

Why Choose Us

Choosing Clean Diesel Specialists for your CARB testing is the smartest move for any diesel vehicle owner or fleet operator in California. We understand the complexities of CARB compliance and the Heavy-Duty Inspection and Maintenance (HD I/M) program, and our team is fully equipped to navigate the intricate regulations so you don’t have to. With over 15 years of experience, we stay ahead of the latest updates to California’s stringent emissions standards, ensuring your vehicle passes inspections with ease and remains on the road.

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    Our Customer Say

    Clyde is the man! He's the diesel guru! We had over 50 fleet vehicles that were down. Clyde had them back on the road in a matter of days! He's a life saver!
    Howard Chavez​
    Operations Manager
    CDS had me back on the road in no time! They have great customer service and their techs are top notch! They save me time and money!
    Lucas Elliot
    Construction Worker
    4.6/5
    4.5/5
    4.7/5

    (714) 276-2020

    BOOK AN APPOINTMENT TODAY