Product Overview

FASS No-Drop Titanium Signature Series Fuel System for 2011–2014 GMC/Chevrolet Duramax 6.6L

Download Product Manual

Upgrade your 2011–2014 GMC or Chevrolet 6.6L Duramax with the FASS No-Drop Titanium Signature Series Fuel System. Designed for stock and modified diesel trucks, this system delivers a dependable supply of clean, properly conditioned fuel to help protect the injection system and support consistent engine performance.

The Titanium Signature Series removes water, fine debris, air, and vapor before diesel fuel reaches the engine. Supplying cleaner, air-free fuel can help improve combustion, throttle response, fuel-system reliability, fuel efficiency, and cold-weather operation.

The No-Drop configuration provides the filtration and performance benefits of a complete FASS fuel system without requiring removal of the factory fuel tank. It includes a precision-machined 6061-T6 billet-aluminum Single Bolt Fuel Sump with dedicated suction and return ports.

Installation requires one opening in the bottom of the fuel tank, allowing the FASS system to draw and return fuel directly through the sump assembly for a clean and straightforward installation.

Dependable Fuel Delivery and Injection-System Protection

• Supports Stock and Modified Duramax Engines: Available flow configurations provide dependable fuel delivery for factory and high-performance 6.6L applications.
• Injection-System Protection: Cleaner diesel fuel helps reduce wear on injectors, the injection pump, and other costly fuel-system components.
• Improved Combustion: Removing water, debris, air, and vapor supports more complete and consistent combustion.
• Performance Support: Properly conditioned fuel can help improve throttle response, fuel atomization, horsepower, and overall engine operation.
• Limited Lifetime Warranty: Warranty coverage is available after the FASS system is properly registered.

Advanced Filtration Technology

FASS systems do more than transfer diesel fuel. They continuously filter and condition it before it reaches the high-pressure injection system.

• Water Separation: Third-party testing verifies removal of more than 99% of water from diesel fuel.
• Air and Vapor Removal: The patented FASS process removes entrained air and vapor that may reduce efficiency and contribute to injection-system wear.
• 2-Micron Absolute Microglass Filtration: Captures extremely fine contaminants that may pass through standard OEM filtration.
• Mass Flow Return: Unused fuel is continuously circulated back through the filters, helping keep the tank supply clean and conditioned.

Key Benefits

• Improved Reliability: Cleaner diesel fuel helps extend the service life of injectors and other injection-system components.
• Stronger Engine Response: Consistent fuel delivery supports improved throttle response, fuel atomization, and injection timing.
• Fuel-Economy Potential: More efficient combustion may contribute to improved fuel economy. Results vary by truck, condition, modifications, and driving habits.
• Additional Contamination Protection: The Extreme Water Separator provides an added safeguard against severely contaminated fuel.
• Cold-Weather Confidence: Supports dependable starting and operation in low temperatures, especially when paired with the appropriate FASS Fuel Heater.
• Proven Durability: FASS reports a fuel-system failure rate below 0.5%.
• Cleaner Engine Operation: Improved fuel quality and combustion may help reduce soot output and DPF regeneration frequency.
• Improved Fuel Lubricity: The FASS conditioning process can increase diesel-fuel lubricity by at least 10%.

Key Features

• Fuel Flow: Supports stock and modified 6.6L Duramax engines producing up to 1,500 horsepower, depending on the selected configuration.
• Filtration Rating: 2-micron absolute microglass filtration captures finer debris than standard OEM filters.
• Water Removal: Removes more than 99% of water from diesel fuel based on third-party testing.
• Patented Air and Vapor Removal: Conditions fuel before it reaches the engine.
• Motor Life: Designed for more than 1,000,000 miles of operation.
• Filter Life Expectancy: Up to 30,000 miles under normal operating conditions.
• Warranty: Limited Lifetime Warranty with registration.
• Fuel-Heater Compatibility: Optional electric FASS fuel-heater kits are available.
• Mass Flow Return: Continuously filters and circulates unused fuel for maximum cleanliness.
• Whisper Technology: Designed for quieter motor operation.
• Performance Radius Cuts: Smooth internal passages help reduce sharp restrictions and promote consistent fuel flow.
• Heavy-Duty Mounting Hardware: Includes durable bolt-on steel mounting brackets.
• No-Drop Configuration: Includes the Single Bolt Fuel Sump Kit for installation without removing the factory fuel tank.

Single Bolt Fuel Sump

• 6061-T6 Billet-Aluminum Construction: Built for strength, corrosion resistance, and long-term durability.
• Single-Hole Installation: Requires one opening in the bottom of the factory fuel tank.
• Integrated Suction and Return Ports: Allows the FASS system to draw and return fuel through the same sump assembly.
• Consistent Fuel Supply: Draws fuel from the bottom of the tank to support dependable delivery during towing, acceleration, and demanding driving conditions.
• No Tank Removal Required: Simplifies installation compared with systems that require the factory tank to be lowered.

Why Choose the FASS No-Drop Titanium Signature Series?

The FASS No-Drop Titanium Signature Series is designed for Duramax owners who want advanced filtration, dependable fuel delivery, and a more straightforward installation.

Whether your GMC or Chevrolet is used for daily driving, towing, commercial work, or a high-horsepower build, this system provides the clean and consistent fuel supply needed to support long-term reliability and performance.