Description
Overview
The PACCAR Fuel Line Adapter Kit from FASS Fuel Systems (PAK-2001) is purpose-built for late-model PACCAR MX-13 engines that do not use a frame-mounted water separator. When you install a FASS Industrial Series System on these trucks, this kit provides the fuel line connectors needed to adapt the FASS return and feed lines directly to the factory fuel module — no guesswork, no improvised plumbing.
Machined from durable 6061 T-6 Billet Aluminum and finished in black, the kit delivers a clean, professional integration between your new FASS system and the OEM fuel module. It is designed to retain the factory fuel module fittings while adapting the factory suction line to the FASS, giving you a straightforward path to a properly configured fuel delivery setup.
Key Benefits
Beyond the physical fuel hose fittings, the PAK-2001 includes a new spring and PRF that bring system pressure down to around 12 psi, instead of the current 16-18 psi. That controlled pressure change helps your FASS Industrial Series System operate within its intended range on PACCAR applications that lack a frame-mounted water separator.
Because everything ships together as a complete kit, you get the fuel line fittings, spring, and PRF needed to complete the adaptation in one package. It’s engineered specifically to pair with FASS Industrial Series Fuel Systems, so the components work together the way they should.
Highlights
- Adapts FASS return and feed lines to the factory PACCAR fuel module
- Retains the factory fuel module fittings and adapts the factory suction line to the FASS
- Includes a new spring and PRF to bring pressure down to around 12 psi (from 16-18 psi)
- CNC-quality 6061 T-6 Billet Aluminum construction in a black finish
- Sold as a complete kit for a straightforward install
- Designed to pair with FASS Industrial Series Fuel Systems
Fitment
This kit is intended for PACCAR trucks — specifically late-model MX-13 engines without a frame-mounted water separator. If your PACCAR application meets that description and you’re adding a FASS Industrial Series System, the PAK-2001 provides the correct fuel line connectors and fittings to complete the job.
When you’re upgrading fuel delivery on a heavy-duty diesel platform, having the right fuel lines and fittings makes the difference between a clean, reliable installation and a compromised one. The PACCAR Fuel Line Adapter Kit takes the uncertainty out of connecting a FASS system to the factory module, giving you factory-oriented fuel hose connectors and the pressure-control hardware to match. Choose this kit to keep your FASS Industrial Series setup dialed in and correctly adapted for your PACCAR truck.
