Genuine Bentley Automotive Washer Fastener N10535403

Product Overview

The Genuine Bentley Automotive Washer Fastener N10535403 is, in precise factory terms, a genuine sealing washer supplied through Bentley Motors at Crewe. Bentley parts specialists list this number simply and accurately as a sealing washer: a small flat sealing ring that sits under a bolt, plug or fitting and makes the joint fluid-tight when the fastener is tightened. The N prefix is the giveaway to its origin: N numbers are Volkswagen Group standard hardware numbers, the normalised bolts, nuts and washers used across the Group, and this washer is a Group standard part stocked for Bentley applications rather than a washer designed for one Bentley model only. Sealing washers are service items. Each time a sealed joint is opened, the washer that made it tight has already been compressed into shape, and refitting the old washer is one of the most common causes of the slow weep that appears days after a repair. This listing is for one brand-new genuine sealing washer under the exact number N10535403, so the joint you are building seals first time with the washer the parts diagram specifies.

Part Numbers & Reference Codes

OE part number: N10535403, also written N 105 354 03 in Volkswagen Group format. The N10 group within the N standard series covers washers and sealing rings in Group parts numbering. This number is stocked by Bentley specialists as a genuine part sourced from Crewe, with an original minimum order quantity from Crewe of five, and it carries no Bentley-specific 3W cross-reference in the sources checked. That means the N number itself is the only reliable reference: order by it, and check it character by character against your parts diagram or the washer you removed, because sealing washers in neighbouring sizes look identical on a bench but seal very differently in a joint.

Vehicle Compatibility & Fitment

As a Volkswagen Group standard washer, N10535403 is called up by individual parts diagrams across Bentley and other Group models wherever a joint of its size needs a sealing washer. We could not verify one specific Bentley model, year or engine application for this number from factory or specialist sources, and standard hardware rarely has one: the same washer can serve several models and several positions. For that reason this page makes no model claim it cannot support. Send us your VIN together with the diagram position or the fastener the washer sits under, and our parts team will confirm that N10535403 is the washer your car specifies before you order.

Key Features & Benefits

• Genuine Crewe-supplied washer: the exact N10535403 sealing washer from the Bentley and Volkswagen Group parts network, not an assorted-box substitute
• Seals the joint, not just spaces it: made to compress and seal under its fastener so the connection stays fluid-tight
• Correct standard size: N-series standard dimensions match the diagram specification for thickness and diameters, which generic washers often miss
• New sealing surface: a fresh washer compresses evenly on first fitting, unlike a reused washer that has already taken a set
• Cheap insurance: renewing the washer whenever a sealed joint is opened prevents the weeps and repeat labour that old washers cause

Technical Specifications

Installation Position & Fitment Notes

This washer installs under the head of the bolt, plug or fitting shown against number N10535403 on the parts diagram for your vehicle, with its sealing face against the joint surface. The exact position varies by application, so work from the diagram rather than from the listing category. Clean both mating faces before fitting, slide the new washer onto the fastener, and tighten to the specified torque so the washer compresses evenly. Never stack two washers to make up a thickness difference, never reuse the washer you removed, and check the finished joint for leaks after the system has reached full operating temperature and pressure.

Product Brand, Type & Condition

Brand: Bentley, supplied as a genuine part through Bentley Motors Crewe. Type: sealing washer, a Volkswagen Group N-series standard hardware item. Condition: brand-new genuine OEM part. For clarity, the verified factory-style description of this number is sealing washer: the listing title calls it an automotive washer fastener, and the washer itself is the sealing element of the fastened joint rather than a fastener in its own right.

What's Included in the Box

This listing includes one (1) Genuine Bentley Sealing Washer, OE part number N10535403. The bolt, plug or fitting it seals under is not included. If you are opening several sealed joints, order one new washer for each joint, and if you need the matching fasteners as well, send us your VIN and we will identify them from the same diagram.

Installation Requirements

Fitting is straightforward but should still be done carefully, ideally by a qualified technician when the joint belongs to a fluid, fuel, oil or cooling system. Drain or contain any fluid the joint holds before opening it, keep dirt out of the open port, use the specified torque, and leak-test on completion. A sealing washer fitted over a dirty or scored face will not seal, however new it is, so face preparation is part of the job.

Warranty & Returns

This brand-new genuine part is covered against manufacturing defects, and your statutory consumer rights apply in the UAE. If the part arrives damaged or is incorrect due to our error, we will replace or refund it. Keep your invoice and the part packaging until fitting is complete, and contact us promptly if anything looks wrong on arrival so we can resolve it quickly.

Confirm Fitment & Order

Sealing a joint on your Bentley? Order the Genuine Bentley Sealing Washer N10535403 from European Autospares Trading LLC, with delivery across the UAE. Standard hardware must match exactly, so if you are in any doubt, Contact us with your VIN and the diagram position and our parts team will confirm before you buy. Browse more in our engine parts, Bentley spare parts and Volkswagen spare parts collections.