The Navistar International MaxxForce Fuel Line Disconnect Tool Kit (ZTSE4773) is a specialty diesel fuel system service tool designed to make quick and reliable disconnection of 11.8 mm low-pressure fuel lines safe and efficient. This kit is engineered to release the locking mechanism on quick-connect fuel fittings, allowing technicians to separate the lines without damage to the connectors or fuel system components.
Fuel lines on heavy-duty truck and diesel applications often use robust quick-connect fittings that can be difficult to disengage without the proper tool. Improper disconnection attempts can damage retaining clips or connectors, leading to fuel leaks and costly repairs. The ZTSE4773 kit engages the release tabs and allows the fittings to be separated smoothly, improving service speed and reducing the risk of collateral damage.
This fuel line disconnect kit is built for professional diesel technicians, fleet maintenance facilities, and heavy vehicle service shops that regularly perform fuel system maintenance and component replacement on heavy commercial engines.
Key Features & Benefits
- Designed specifically for 11.8 mm quick-connect fuel lines on heavy-duty diesel engines.
- Releases locking mechanisms on fuel line fittings for safe and controlled disconnection.
- Heavy-duty construction helps prevent wear and tool deformation during repeated shop use.
- Reduces risk of damaging fuel connectors, clips, or line ends.
- Simple hand-tool functionality with no special adapters required beyond the correct size fit.
Typical Applications
- Disconnecting low-pressure fuel lines during fuel system service.
- Engine removal or replacement procedures requiring fuel line separation.
- Fuel rail, filter, or pump maintenance.
- Regular diesel engine maintenance in dealerships and fleet shops.
Why It Matters
Heavy-duty diesel engines use quick-connect fittings that lock firmly to prevent fuel leaks under pressure. Trying to disconnect these without the proper tool can break clips, crack plastic connectors, or damage line ends—leading to prolonged downtime and extra cost. The ZTSE4773 disconnect kit ensures the fuel lines can be separated quickly, safely, and without unnecessary force, preserving both the fitting integrity and the fuel system’s reliability.