FASS Fuel Systems

FASS 20-23 Silverado 6.6L Duramax L5P Titanium Sig 140GPH

SKU: fsstsc15180f140g UPC: 850044137312
In stock - 6 items available
$847.35

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Verified Fitment & Application Support

This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.

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Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm. For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase. Orders shipping to restricted areas may be canceled.

A diesel that pulls fuel under vacuum through a partly blocked filter starves the injection pump long before anything shows on a gauge, and the pump is the expensive part. The FASS 20-23 Silverado 6.6L Duramax L5P Titanium Sig 140GPH (store SKU fsstsc15180f140g) replaces the factory supply with a Titanium Signature Series lift pump, filter and air separation system.

  • Rated at 140 GPH — that is the number to match to your build, since an under-sized system starves the pump and an over-sized one simply costs more.
  • Sized for Stock to 500 HP — pick the band your build actually runs rather than the largest one available.
  • Titanium Signature Series — the series determines the filtration and mounting arrangement, so it is not interchangeable with the other FASS lines.
  • Separates air and vapour out of the fuel before it reaches the injection pump, which is the failure mode that quietly shortens pump and injector life.

Fits: 2020-2023 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD with the 6.6L Duramax L5P.

Perfect for a build where the injection pump is worth protecting and the factory supply was never designed for the fuelling you are asking of it.

Shipping Height: 11.5

Shipping Length: 18.0

Shipping Width: 14.0

Rebuilt by Techs Who Only Do Diesel

Injectors, pumps, and turbos, serviced by people who've been doing this for decades — not a parts counter with a catalog.

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