Route high-pressure fluid from the power steering pump to the steering gear with the Sunsong Power Steering Pressure Line Hose Assembly 3401785. This pressure line installs as a direct-fit replacement for the 1984-1987 BMW 325E, 1986-1987 BMW 325ES, 1986-1988 BMW 325, and 1987-1991 BMW 325I and 325IS — see the Buyer's Guide tab for engine-level fitment.
- Pre-assembled with brackets: ships ready to install to help reduce labor time compared with replacements sold as individual hoses.
- Precision engineered: built to exact fit and includes the additional components needed to restore the wearable parts to original condition.
- High-pressure rated: the pressure hose carries a max working pressure of 1,500 psi, a burst pressure rating of 8,700 psi, and a tensile strength of 1,600 lb.
- Factory tested: every pressure hose is subjected to a high-pressure quality assurance test before leaving the factory.
Sunsong is a vertically integrated manufacturer of automotive fluid transfer hoses and lines, developing products intended to deliver exact form, fit, and function. If a cracked, chafed, or leaking line is the cause of hard steering or fluid loss on your BMW, this assembly replaces the worn pressure line.
Interchange: 36-358880 · 109-2042 · 979-2111
36358880 · 1092042 · 9792111 · 32411128625 · 32411131915 · 32411134436 · 32411137153 · 32411137856 · 35888 · 71361 · 358880 · 13401785 · 72528 · 3823
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this part do?
It is the high-pressure power steering line that carries pressurized fluid from the power steering pump to the steering gear on the listed BMW models.
Which vehicles does the 3401785 fit?
It fits the 1984-1987 BMW 325E, 1986-1987 BMW 325ES, 1986-1988 BMW 325, and 1987-1991 BMW 325I and 325IS. Check the Buyer's Guide tab for engine-level details.
Does it come pre-assembled?
Yes. The hose is pre-assembled with brackets and includes the additional components needed to restore the wearable parts to original condition, helping reduce installation time.
What are the pressure ratings?
The pressure hose is rated for a max working pressure of 1,500 psi, a burst pressure of 8,700 psi, and a tensile strength of 1,600 lb.
How do I know if my pressure line needs replacing?
Signs may include power steering fluid leaks, cracked or chafed hose, low fluid level, or hard steering. Diagnose the cause before replacing, as other components can produce similar symptoms.
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