FASS Drop-In Series Diesel Fuel System for PACCAR MX-13 Engines
$499.00
FASS Drop-In Series Diesel Fuel System for PACCAR MX-13 Engines
FASS Drop-In Series Diesel Fuel System for PACCAR MX-13 Engines
Fits: PACCAR MX-13 Engines
Part No: DIFSHD5001
FASS Drop-In Technology: The FASS Drop-In Series Diesel Fuel System is engineered to be the most cost-effective and easiest solution for removing air/vapor from diesel fuel in your diesel fuel injection system.
By removing the entrained air and air vapor, the Drop-In Series System protects the diesel fuel injection system from premature failure and will MORE THAN "TRIPLE" the life of your fuel injection system!
Additionally, by eliminating the contaminants mentioned above, our Drop-In Series System for the diesel platform optimizes fuel efficiency, restores horsepower, and delivers additional performance benefits throughout the fuel system. This barely scratches the surface of benefits FASS provides to your engine.
Imagine being able to improve MPG (fuel efficiency), horsepower, increase fuel injection system life, truly balance the engine (smoother operation) with other benefits listed below with an installation time in about 1 hour!
FASS Drop-In Series System Features
Remove the entrained air and vapor from your diesel fuel and a chain reaction follows.
Tap any feature to see each link in it.
Increases Lubricity to Fuel Injection Components
At least a 10% gain in fuel lubricity under stationary conditions — and that’s the floor. Agitation begins the moment the engine does, and vehicle motion compounds it. Restricting filters, higher elevation, heated fuel, and lower fuel levels drive air/vapor higher yet. The field calls it “fuel starvation.” Physics calls it entrained air/vapor. Strip it out, and lubricity gains travel well north of 10%.
FASS will MORE THAN “TRIPLE” the life of your fuel injection system — and keep thousands of dollars in your pocket over the long haul.
Optimizes Fuel Efficiency / Horsepower
Because air and vapor are compressible and fuel is not, they delay fuel entry into the cylinder. Combustion starts late, the burn rate suffers, and the power stroke produces fewer BTUs than it should.
From the Field — FASS optimizes fuel efficiency, with customers consistently reporting gains of 3-4%, coupled with horsepower gains.
True Engine Balancing — Smoother & Quieter Operation
Air/vapor delays fuel delivery, and it does so inconsistently and unpredictably — throwing the engine out of time. Strip it out, and every cylinder hits its true contribution on every stroke.
Customers hear it first, then feel it — in the mirrors, in the steering wheel. The engine runs smoother, and less vibration reaches the cab. Less vibration means less stress, and less stress means a longer life.
Consistent Engine Performance with HP Gains
Diesel engine output depends on precise fuel injection timing, and air/vapor undermines that precision.
Your engine was rated in a “Test Cell” — clean, non-agitated fuel, positive flow, roughly 10% air in solution. FASS delivers those same conditions in the “Real World” with the air removed, edging performance just past the “Test Cell” rating.
Reduces: Regens, Soot/Emissions, EGT’s (Turbo Temps), Water/Oil Temps, Oil Consumption
Shift the fuel timing and you shift the BTUs produced by every power stroke. That single shift ripples outward: how much soot is created, how and when combustion occurs, and how fast heat exits the cylinder as valve and combustion timing drift apart. Even ring seating depends on it.
Every one of these benefits leads to the same place: COST. FASS reduces maintenance spending across the board, and while that may sound too good to be true, the physics and the customer reports say otherwise. Soot/Emissions down 18-76.8% — plus reductions across CO, CO₂, and Oxides of Nitrogen. EGT’s (Turbo Temps): typical stock applications 50-100°F; modified applications 150°F and up, over 200°F. Water/Oil Temps: reported 15-25°F. Oil Consumption: customers have reported reduced oil consumption.
Why Choose FASS?
OEM filtration was validated in a "Test Cell". It was never designed to deliver that same Performance, Productivity, and Protection in the "Real World" working conditions. That's why the people who build this GREAT country turn to FASS.
Brad Ekstam, Founder & President
See more here at 
or review our craftsmanship standards at 
At FASS, we don’t rush products to market, we are “Striving for Perfection Settling for Excellence”. That’s why our systems have a failure rate of less than 0.5%, and why diesel owners across the country trust us to protect their investments. Whether you’re daily driving your diesel truck or building horsepower, the FASS Drop-In Series Fuel System gives you peace of mind and performance you can feel. Register your system with FASS to activate the limited lifetime warranty.
| Weight | 28 lbs |
|---|---|
| Dimensions | 18 × 14 × 12 in |