FASS Diesel Fuel Systems (@fassfuelsystems)

NEW for 2025 to 2027 6.7 Cummins! 👀

Are Fords really THAT much better than Chevys/GMCs?

Don't let cold weather slow your diesel down 🥶 Combining the FASS Connect with our Electric Fuel Heaters makes operating in winter EASY!

Already running a FASS? Bring the heat this winter with our thermostatically controlled Electric Fuel Heater Kits🔥

How many diesels are in the FASS parking lot? 👀

How much $$$ could YOU save with FASS?

What would a 1.1MPG gain mean for your operation?

Proof that you need an LBZ-swapped OBS Chevy in your life 😘

If you drive a modern diesel, the MPG benefits our customers report are hard to ignore!

Austin’s 1,000+hp Ram 3500 Limited is as clean as it is spicy 🥵 #fueledbyfass

Our 7.3 and 6.0 Powerstroke customers have reported some serious MPG improvements!

Own a diesel motorhome? Simply upgrading your fuel system can mean THOUSANDS of dollars in savings 💸

Jake has loved diesels since day one (literally)

BREAKING: Red-dyed diesel is now legal for on-road use!

Beau’s 3rd Gen Mega Cab came to party!

This FASS-fueled 6.4 Powerstroke got it DONE at FP Truck Fest!

The Sharp family’s FASS-fueled F-450 is a BEAST!

Rain or shine, it’s time for FP Truck Fest 6.0 🔥 We’ll see you in Jamestown!

What's it like to make truck videos for a living? 🤨 The FASS Life Podcast drops 10/2/2026 on Spotify!

Our friends @Beaman Builds built a FASS-fueled MONSTER 🦍

For Brad, there was never a "Plan B" 🚫 Full episode drops 10/2/2026 on Spotify!

555hp and 1,230lb-ft of torque from the new L6P aka “The Mongoose” 8.3 liter Duramax 🔥

Diesel is EXPENSIVE right now, but we can help 👀

Ethan reported a 1.5-2MPG gain after installing our Drop-In Series Fuel System!

What's YOUR favorite diesel event? 👀 The FASS Life Podcast drops 10/2/2026 on Spotify!

Real GPH. Real-world flow. No games. No excuses.

BREAKING: The 8.3 liter “MONGOOSE” Duramax is coming!

1,820hp with a little nitrous is NO JOKE 🤯 Owned by @Gavin_Ferg865

Less expensive, more EFFECTIVE 👌

Gavin Ferguson’s 6.0 Powerstroke is a FASS-fueled monster! Owned by @Gavin_Ferg865