Shop FASS Fuel Systems in Canada

FASS stands for Fuel Air Separation System, and that name describes exactly what these units do. Diesel fuel arrives at your injectors carrying air, vapour, water, and dirt, and every one of those shortens injector life and costs you power. A FASS system pulls fuel from the tank, strips out the contaminants, and delivers clean fuel at steady pressure. Canadian Diesel Online carries the full FASS range for Cummins, Power Stroke, and Duramax trucks, along with the filters and service parts to keep them working.

What a FASS System Actually Does

The factory fuel system on most diesel trucks pulls fuel under suction, which introduces air and leaves contaminants in the fuel. FASS replaces that with a pressurised system built around filtration.

• Two micron filtration: Far finer than a factory filter, catching the particles that score injector internals.
• Built in water separation: Water is pulled out before it ever reaches the injection system, where it causes the most expensive damage.
• Air and vapour removal: The patented separation process returns air and vapour to the tank instead of sending it down the fuel line.
• Consistent supply pressure: Pressurised delivery instead of suction means the high pressure pump is never starved, even under load.
• Performance Radius Cuts: Rounded internal passages instead of square ninety degree fittings, which restrict flow and reintroduce air.

Titanium Signature Series Lift Pumps

The Titanium Signature Series is the system most pickup owners fit, and it is the core of our FASS inventory. Flow rates are matched to your power level rather than sold one size fits all.

• Matched to your build: Flow rates from 95 GPH through 100, 140, 220, 240 and 290 GPH, running at 60 to 65 PSI.
• Stock through 1200 horsepower: Whether the truck is factory stock or running large injectors and a bigger turbo, there is a system rated for it.
• Continuous Fuel Polishing: Fuel is recirculated through the Extreme Water Separator before delivery, so it is cleaned repeatedly rather than once.
• Mass Flow Return: Positive pressure on the delivered fuel prevents cavitation, galling and scoring in the injection system.
• Bolt on mounting: The FASS bracket fits without welding or drilling, which keeps installation to an afternoon.

Industrial Series for Heavy Duty Applications

If you are running Class 8 equipment rather than a pickup, the Industrial Series is built for the duty cycle and the hours.

• Class 8 applications: Systems for DD15 and similar heavy duty engines, rated at 290 gallons per hour.
• One million mile warranty: Backed for one million miles or five years, which tells you what FASS expects of it.
• Same filtration standard: Two micron rating, integrated water separation, and the air and vapour removal process carried over from the pickup systems.
• Fleet economics: Injector replacement on heavy equipment is expensive enough that filtration pays for itself quickly.

Why Filtration Matters More in Canada

Cold weather is hard on diesel fuel. Water that sits in the system freezes, fuel gels, and cold starts get harder every winter as the injection system wears. A FASS unit addresses the fuel side of all three. You can browse FASS alongside other leading diesel brands in our catalogue.

• Water out before it freezes: Separation at the pump means less water sitting in lines and filters through a cold snap.
• Easier cold starts: Air free fuel at consistent pressure means the engine catches sooner on a cold morning.
• Longer filter life: Contaminants are caught at the separator rather than loading up your factory filter.
• Lower exhaust gas temperatures: Cleaner combustion from cleaner fuel, which matters when you are towing on a grade.

Replacement Filters and Service Parts

A FASS system is only as good as its filters, and they are consumables. We stock the service parts so you are not hunting for them at the wrong moment.

• Particulate filters: The two micron elements that do the fine filtration.
• Extreme Water Separators: Replacement separator elements for scheduled service intervals.
• Bulkhead fittings and suction tubes: Billet aluminium fittings with PTFE pickup tubes that cut to match tank depth.
• Mounting hardware and fittings: Brackets, lines and fittings sized for a leak free install.

Shop FASS at Canadian Diesel Online

We ship FASS systems and service parts from Canadian warehouses, so there is no border wait and no duty on your order. With over 20 years of hands on diesel experience, our team can match the right flow rate and system to your truck, engine, and power level. Search our full parts catalogue, place a quick order online, or contact us and we will help you size it correctly the first time.