OVERVIEW
Genuine VW/Audi 5mm Flat Washer
N-011-523-21 is the genuine flat washer used at specified fastening points in the matched Volkswagen Group assemblies. It provides the original bearing surface between the fastener and the component beneath it. This listing supplies one washer; screws, nuts, brackets and surrounding components are separate.
Technical details
- OEM number: N-011-523-21 / N01152321.
- Factory catalog dimensions: 5mm nominal bore × 10mm outside diameter × 1mm thickness.
- Type: Flat washer for the assigned original fastening arrangement.
- Quantity: One washer per purchased unit.
- Fitment control: Complete OEM number, fastening location, washer bore, outside diameter and thickness.
The outside diameter determines the supported contact area, while thickness affects the assembled stack height. A washer that slides over the screw is not necessarily the right replacement: a different outside diameter or thickness can change how the fastener bears on the bracket or trim component. Match the original catalog assignment instead of choosing solely by screw size.
This washer is not a sealing ring and is not advertised as a spring or locking washer. It does not replace a missing spacer, damaged bracket, stripped screw or broken mounting insert. No coating grade, material alloy or universal tightening value is specified here because those details have not been confirmed for this exact application.
Common reasons to replace
Replace the original washer if it is missing, bent, deeply corroded, cracked, distorted around the bore or damaged during disassembly. Replacement is also appropriate when previous work introduced hardware with the wrong diameter or thickness. Renew the washer when the applicable factory repair procedure requires new hardware.
Inspect the screw or nut, mounting surface and component beneath the washer before reassembly. A loose attachment may result from damaged threads, a cracked mounting tab or an incorrect fastener. A new washer cannot repair these faults. Restore the original hardware arrangement and correct the underlying damage so the assembly can be secured properly.
Fitment
The table identifies confirmed vehicle and engine families. Compatibility is limited to the individual original fastening point assigned this part number. The same vehicle contains many different washers; model and year alone do not identify the correct fastening location.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Audi A4 | 1997–2001 | 1.8L turbocharged gasoline inline-four | B5 / 8D; front-wheel drive; No transmission-specific restriction listed for the confirmed washer application | Only the original fastening point assigned N01152321, with the specified 5 × 10 × 1mm washer. Not universal for every bolt or trim attachment. Confirm the fastening point and original washer specification before ordering. |
| Audi A4 | 1997–2001 | 1.8L turbocharged gasoline inline-four | B5 / 8D; quattro; No transmission-specific restriction listed for the confirmed washer application | Only the original fastening point assigned N01152321, with the specified 5 × 10 × 1mm washer. Not universal for every bolt or trim attachment. Confirm the fastening point and original washer specification before ordering. |
| Audi A4 | 1996–1997 | 2.8L gasoline V6; 12-valve | B5 / 8D; front-wheel drive; No transmission-specific restriction listed for the confirmed washer application | Only the original fastening point assigned N01152321, with the specified 5 × 10 × 1mm washer. Not universal for every bolt or trim attachment. Confirm the fastening point and original washer specification before ordering. |
| Audi A4 | 1996–1997 | 2.8L gasoline V6; 12-valve | B5 / 8D; quattro; No transmission-specific restriction listed for the confirmed washer application | Only the original fastening point assigned N01152321, with the specified 5 × 10 × 1mm washer. Not universal for every bolt or trim attachment. Confirm the fastening point and original washer specification before ordering. |
| Audi A4 | 1998–2001 | 2.8L gasoline V6; 30-valve | B5 / 8D; front-wheel drive; No transmission-specific restriction listed for the confirmed washer application | Only the original fastening point assigned N01152321, with the specified 5 × 10 × 1mm washer. Not universal for every bolt or trim attachment. Confirm the fastening point and original washer specification before ordering. |
| Audi A4 | 1998–2001 | 2.8L gasoline V6; 30-valve | B5 / 8D; quattro; No transmission-specific restriction listed for the confirmed washer application | Only the original fastening point assigned N01152321, with the specified 5 × 10 × 1mm washer. Not universal for every bolt or trim attachment. Confirm the fastening point and original washer specification before ordering. |
| Audi S4 | 2000–2002 | 2.7L twin-turbocharged gasoline V6 | B5 sedan / Avant; quattro; No transmission-specific restriction listed for the confirmed washer application | Only the original fastening point assigned N01152321, with the specified 5 × 10 × 1mm washer. Not universal for every bolt or trim attachment. Confirm the fastening point and original washer specification before ordering. |
| Audi A4 | 2002–2004 | Engine-independent original washer attachment | B6 sedan / Avant; assigned original fastening point | Catalog position 6 only where specified; match the original 5 × 10 × 1mm washer. One washer supplied. |
| Audi A4 Cabriolet | 2003–2006 | Engine-independent original washer attachment | 8H convertible | Catalog position 6 only where specified; match the original fastening arrangement. One washer supplied. |
| Audi S4 Cabriolet | 2004–2006 | 4.2L gasoline V8 | 8H convertible; quattro | Catalog position 6 only where specified; match the original fastening arrangement. One washer supplied. |
| Audi A6 | 2002–2004 | Engine-independent original washer attachment | C5 sedan / Avant; matching original attachment | Catalog positions 3 or 6 only where assigned this exact washer. One washer supplied. |
| Audi allroad | 2001–2005 | Engine-independent original washer attachment | C5 allroad; quattro | Catalog positions 3 or 6 only where assigned this exact washer. One washer supplied. |
| Audi RS6 | 2003 | 4.2L twin-turbocharged gasoline V8 | C5 sedan; quattro; left-hand drive | Catalog positions 3 or 6 only where assigned this exact washer; L0L configuration. One washer supplied. |
| Audi R8 | 2014–2015 | 5.2L gasoline V10 | Type 42; quattro; matched original attachment | Catalog position 7 requiring N01152321 only; no general substitution at other fasteners. One washer supplied. |
| Volkswagen Phaeton | 2004–2006 | Engine-independent original washer attachment | 3D long-wheelbase sedan | Catalog position 8 requiring the exact washer; match fitted component and original stack. One washer supplied. |
| Volkswagen Touareg | 2004–2010 | Engine-independent original washer attachment | First-generation 7L | Catalog position 5 where assigned N01152321; later Touareg generations not included. One washer supplied. |
| Volkswagen Corrado | 1990–1994 | Engine-independent original washer attachment | Original coupe fastening arrangement | Catalog position 19 requiring this washer only; match fitted components. One washer supplied. |
| Volkswagen Vanagon | 1988–1991 | Engine-independent original washer attachment | T3 original fastening arrangement | Catalog positions 4 or 36 only where specified; match original washer and assembly. One washer supplied. |
| Audi TT | 2006 | 1.8L turbocharged gasoline inline-four | Type 8N; Base; coupe / convertible original rear trim | Right rear trim washer at diagram position 6; exact 5 × 10 × 1mm original fastening point only. One washer supplied. |
Installation and service guidance
Record the original washer position and component order during disassembly. Clean the bearing surfaces and inspect the fastener threads. Fit the correct washer flat against the assigned surface without stacking additional washers to compensate for a damaged or incorrect component.
Tighten the associated fastener according to the repair procedure for that specific assembly. Torque depends on the screw, joint and receiving material, rather than the washer alone. Avoid overtightening attachments in plastic trim or thin brackets. After assembly, check that the component is supported securely and that the washer has seated evenly without distortion.