Keep pressurized fluid moving between the hydroboost brake booster and the steering gear with the Sunsong power steering pressure line hose assembly, part number 3404139. It is a direct-fit replacement for the 2013-2019 RAM 2500 and the 2013-2019 RAM 3500, and it is cataloged for the hydroboost-to-gear position. See the "Vehicles it fits" section for engine details.
Sunsong is a vertically integrated manufacturer that researches, develops, and builds automotive fluid transfer hoses and lines. It designs its products around what installers need and aims to exceed industry quality standards, with assemblies built to deliver exact form, fit, and function.
- Pressure ratings: Rated for a maximum working pressure of 1,500 psi, a burst pressure of 8,700 psi, and a tensile strength of 1,600 lb. Sunsong states that these ratings exceed original equipment performance standards.
- Factory pressure tested: Every pressure hose goes through a high-pressure quality assurance test before it leaves the factory.
- Precision engineered: Sunsong engineers its pressure and return assemblies to an exact fit.
In the hydroboost-to-gear position, this line carries pressurized power steering fluid from the hydroboost unit to the steering gear. Signs it may need replacing include fluid seeping from the hose or its fittings, a hose that looks cracked or wet, a steadily dropping fluid level, or pump whine caused by low fluid. Diagnose the source of the problem before replacing parts.
Interchange: 40379 · 5154898AA · 5154898AB · 5154898AC · 5154898AD · 80942 · 352547 · 77075 · 5540 · 13404139
This part cross-references / interchanges with the following part numbers:
3404139, 40379, 5154898AA, 5154898AB, 5154898AC, 5154898AD, 80942, 352547, 77075, 5540, 13404139
Frequently Asked Questions
Where does this pressure line hose install?
It is cataloged for the hydroboost-to-gear position. It carries pressurized power steering fluid between the hydroboost brake booster and the steering gear.
Which vehicles does Sunsong 3404139 fit?
It fits the 2013-2019 RAM 2500 and the 2013-2019 RAM 3500. Check the "Vehicles it fits" section for engine details before ordering.
What pressure is this hose rated for?
Sunsong rates this pressure hose for a maximum working pressure of 1,500 psi, a burst pressure of 8,700 psi, and a tensile strength of 1,600 lb.
Is the hose tested before it ships?
Yes. Sunsong puts every pressure hose through a high-pressure quality assurance test before it leaves the factory.
What signs may point to a failing pressure line?
Fluid leaking from the hose or its fittings, a cracked or wet hose, or a steadily dropping fluid level may point to a worn line. Confirm the source of the leak before replacing it.
