FASS Drop-In Series Universal HD Fuel Air Separation System
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
FASS Drop-In Series Universal HD Fuel Air Separation System for Most Class 8 and Commercial Diesel Engines
Fits: Universal Diesel Applications
The FASS Drop-In Series Diesel Fuel System was engineered by FASS to be the most cost-effective and easiest solution for removing air vapor and entrained air from diesel fuel. In addition to advanced air separation, this universal system features high-capacity particulate filtration down to 2 micron absolute.
By removing entrained air, air vapor, and particulates, the Drop-In Series System protects diesel injection systems from premature failure and can triple the life of your fuel injection system.
Eliminating these contaminants helps optimize MPG (results will vary), restore horsepower, and sharpen throttle response. This universal kit can be adapted to nearly any diesel application.
Reliability. Simplicity. Protection.
- Injector Protection: Triples the life of injectors and injection pumps.
- FASS Filtration: Optimizes combustion, restores horsepower, and maximizes MPG (results vary).
- Limited Lifetime Warranty: Register your FASS system and you’re covered.
Advanced In-Tank Filtration Technology
The FASS Drop-In Series focuses on fuel quality:
- Air & Vapor Removal: Eliminates entrained air and vapor that damage injection systems and reduce efficiency.
- 2 Micron Absolute Filtration (Microglass): Removes debris smaller than OEM filters can capture.
Key Benefits
- Improves Reliability: Triples the injection system life.
- Maximized Horsepower: Improved fuel atomization and restored injection timing for a smoother, more balanced engine.
- Optimized MPG: More efficient and complete combustion (results will vary).
- Extreme Cold Weather Confidence: Reliable starts and operation in harsh climates, especially when paired with the FASS Drop-In Fuel Heater Kit.
- Cleaner Operation: Reduced DPF regenerations and soot output through improved combustion.
Universal Drop-In Series Filtration System Features
This extremely flexible system provides an easy mounting solution with inlet and air separation ports that can be utilized on either side. A single outlet port is located on the top of the filter base.
- 4 × SAE 10 (O-Ring Boss) fuel inlet ports
- 1 × SAE 10 (O-Ring Boss) fuel outlet port
- 2 × 1/4" male JIC air separation ports
- 2 × 1/8-27 NPT fuel inlet pressure ports
- Increases fuel lubricity by at least 10%
- Extends life of fuel injection system components
- 100% drop-in design — no additional modifications required
- Ideal for heavy equipment OEM applications
- Can be used with OEM filtration or as final filtration
- Machined in the USA from 6061-T6 billet aluminum
- Type III hardcoat anodized black for corrosion resistance
- 125 PSI max pressure rating (300 PSI with PF2002)
- 500 GPH maximum flow rate
Why Choose FASS?
At FASS, we design fuel Systems with longevity, reliability, and real-world use in mind. The Drop-In Series is engineered for diesel owners who want proven filtration technology and injector protection — without changing the character of their truck. It’s a smart, dependable upgrade for daily drivers and work trucks alike.
What applications is this system compatible with?
This is a completely universal system, meaning it can be adapted to basically anything with a diesel engine! Whether it is a Class 8 truck, marine application, heavy equipment, defense, farm tractor, lawn mower, and the list goes on! Just about any application that you desire to have superior particulate filtration and removing the air vapor/entrained air.
