OVERVIEW
Factory fluid-passage bolt for the steering hose connection
N-903-579-03 is the Genuine VW/Audi banjo bolt used at the assigned hydraulic power steering hose connection on the confirmed Vanagon applications below.
A banjo bolt combines fastening and fluid passage. Its hollow body and cross-drilled openings communicate with the original fitting while the sealing rings close the joint. Match the original part number and connection rather than substituting a solid fastener.
Technical details
- Complete factory number: N-903-579-03.
- Factory specification: factory hydraulic hose banjo bolt N90357903.
- Design: external hexagon head with hollow and cross-drilled fluid passages.
- Quantity supplied: one individual banjo bolt.
This listing supplies the individual bolt. The hose fitting and sealing rings are separate service parts. Identify the exact hydraulic connection before ordering because different ports can use different banjo designs.
Common reasons to replace
- The sealing faces are damaged.
- Threads are crossed or stripped.
- The hexagon is rounded and cannot accept the correct tool.
- The fluid passages are damaged or obstructed.
- The original bolt is missing or was replaced with incorrect hardware.
Inspect the hose, banjo fitting, sealing rings and receiver threads. Diagnose fluid leakage and steering symptoms before replacement. A damaged hose or hydraulic component requires its own repair.
Vehicle fitment
These confirmed applications require hydraulic power steering and the specified hose connection. Match the original N90357903 bolt.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Volkswagen Vanagon | 1987 | 2.1L gasoline flat-four | T3 van; rear-wheel drive; hydraulic power steering; Assigned steering hose connection | Original N90357903 banjo position in the hydraulic steering hose assembly; not manual steering. |
| Volkswagen Vanagon | 1989 | 2.1L gasoline flat-four | T3 syncro van; four-wheel drive; hydraulic power steering; Assigned steering hose connection | Original N90357903 banjo connection with the assigned intake hose; confirm seal and fitting arrangement. |
Installation guidance
Follow the factory hydraulic steering service procedure, including pressure relief and fluid handling. Keep passages free of contamination, fit new specified sealing rings and tighten to the connection-specific torque without twisting the hose.
Refill with the approved hydraulic fluid and perform the prescribed bleeding and leak checks. Confirm correct fluid level and normal steering operation after repair.
Ordering information
Sold individually as one genuine banjo bolt. Sealing rings, hose, pump and fluid are separate. Confirm VIN, exact connection and required quantity.