OVERVIEW
Genuine VW/Audi N-011-523-18 is an individual flat washer assigned to original mounting connections in the verified electrical-system diagrams below. The catalog identifies this washer with nominal size 5. Match the exact mounting point and complete factory number when selecting replacement hardware.
Technical details and contents
- Factory part number: N-011-523-18 / N01152318.
- Component type: flat mounting washer.
- Catalog nominal size designation: 5.
- Quantity supplied: one washer.
- Bolts, nuts, brackets and electrical components are separate.
The original factory number is the identification used for this listing. Dimensions published for a later replacement washer are not specifications for this archive item. Use the intended mating hardware and mounting arrangement for the connection.
Function at the mounting point
A flat washer provides the intended bearing interface at its assigned fastening point. Correct placement and the matching fastener allow the retained bracket or component to seat as designed. The exact use depends on the original diagram, since the same washer number can appear at several mounting points.
The verified applications include electrical mounting arrangements near the battery area, electrical control-unit supports, central electrics and wiring attachments. This listing contains fastening hardware. It does not establish an electrical grounding function for every listed location.
Common reasons to replace
- The washer is missing after bracket or electrical-component service.
- It has been lost while removing surrounding hardware.
- The washer is bent or its bearing surface is damaged.
- Corrosion prevents correct seating.
- A previous repair used an incorrect washer.
Inspect the mating fastener, bracket and mounting surface before reassembly. A new washer will not repair stripped threads, a cracked support or a failed electrical component. Diagnose the original fault separately from replacement of missing mounting hardware.
Vehicle fitment
Match the vehicle configuration and the original diagram point. The presence of this number in an electrical diagram does not make it suitable for every fastener on the vehicle. Related washers with different factory suffixes must be identified separately.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Audi 100 | 1994 | 2.8L gasoline V6 | C4 sedan; original electrical mounting arrangement; Front-wheel drive; match original component and attachment | Assigned size-5 washer in original battery-area electrical mounting diagram. Match exact diagram point; does not identify every washer in the battery or control-unit area. |
| Audi 100 Quattro | 1994 | 2.8L gasoline V6 | C4 sedan or Avant; original electrical control-unit mounting arrangement; 4-speed automatic; quattro | Assigned size-5 mounting washer in the electrical control-unit/automatic-transmission-control diagram. Match exact bracket and diagram point. |
| Audi 90 | 1994 | 2.8L gasoline V6 | B4 sedan; original central-electrics and relay mounting arrangement; Match original bracket and attachment; front-wheel drive or quattro as equipped | Original assigned size-5 washer in central-electrics/relay mounting diagram. This is fastening hardware, not an electrical contact or fuse. |
| Audi Fox | 1975 | 1.5L gasoline inline-four | Original central wiring and electrical mounting arrangement; Match original attachment | Assigned size-5 washer in original central-wiring diagram. Match the factory fastening point and associated hardware. |
Installation guidance
Follow the factory procedure for access to the exact mounting connection. Observe the required electrical preparation before working near the battery, wiring or control units. Keep small hardware accounted for and avoid trapping wires between mounting surfaces.
Install the washer in the original assigned position with the correct fastener. Align the retained component before tightening and use the specified torque for that connection. Do not overtighten to compensate for a missing spacer, distorted bracket or damaged thread.
Ordering information
This listing supplies one genuine flat washer. Confirm the required quantity and all other fasteners for the repair. Battery, wiring, control unit, relay plate, brackets, bolts and a complete fitting kit are not included.