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OE 7L0512131B reaches a purchasing desk from three directions at once. A Volkswagen Touareg owner arrives with it from a dealer catalogue, an Audi Q7 workshop finds it listed as a bumper or stopper, and a Porsche Cayenne specialist recognises it as 95533310520. All three are asking about the same rear axle component. This page covers the specification we supply against this reference, the models it fits, the trade numbers it cross-references to, and the variant trap that causes most of the returns on this platform.
The part is a rear axle jounce bumper, also catalogued as a rubber buffer, stopper or suspension buffer depending on which brand book you open: an elastomer body at the rear spring position that cushions the coil as it compresses.
Catalogues for this reference consistently list it against the rear axle, fitted left and right. It works with the rear coil spring rather than inside a front strut, and its action is progressive: largely passive through normal suspension movement, then taking up load rapidly near full compression. That limits coil-to-coil contact and reduces the peak load reaching the spring seat and body structure.
Volkswagen Group numbers are built from blocks rather than assigned at random. The leading 7L0 block identifies the platform family, the middle block the component group, and the trailing letter a revision. Because several Group brands were built on the same architecture, one reference serves Volkswagen, Audi, Porsche, SEAT and Skoda catalogues at once, which is why a single stop covers such a long model list.
| Product name | Strut bump stop (jounce bumper, rubber buffer, suspension buffer) |
|---|---|
| Reference OE number | 7L0512131B |
| Bonpora No. | 4110008 |
| Fitment / application | Volkswagen Touareg 7L, Audi Q7 4L, Porsche Cayenne 955 |
| Position | Rear axle, left and right |
| Material | Polyurethane (PU) elastomer |
| Size | Φ17 x Φ63.4 x 93.3 mm (bore, body diameter, overall length) |
| Country of origin | China |
| Warranty | 1 year |
| Delivery time | 15-30 days |
| Packaging | Neutral export packaging |
| Custom service | OEM and custom design support |
Bonpora number 4110008 is our internal item code, useful when requesting a sample or quoting the part again later. Our drawing holds 93.3 mm overall while European catalogue data for this application is commonly listed at a nominal 92 mm. That difference sits inside the normal tolerance band for a moulded elastomer, and we state it rather than round it away. If your catalogue entry is built from a specific revision, send it and we will confirm the figures against it.
Fitment is the first thing an overseas buyer checks, because a stop listed against the wrong model year produces returns rather than repeat orders. The reference is fitted on the rear axle of the models below.
| Brand | Model and platform code | Production years | Notes |
|---|---|---|---|
| Volkswagen | Touareg (7LA, 7L6, 7L7) | 2002-2010 | Rear axle; without sport suspension, without air ride suspension |
| Audi | Q7 (4L, 4LB) | 2006-2015 | Rear axle; without air ride suspension |
| Porsche | Cayenne (955) | 2002-2010 | Rear axle; Porsche equivalent number 95533310520 |
These three vehicles were built on a shared Volkswagen Group architecture, which is why one stop number appears in a Volkswagen book, an Audi book and a Porsche book. For a distributor already selling German SUV maintenance parts, a single stocking line can serve three customer groups instead of three separate references, cutting slow-moving inventory and simplifying container consolidation.
This is where most wrong-part returns on this platform originate. Dealer catalogue wording for the Touareg lists the reference with the qualification without sport suspension, without air ride suspension, and the Audi Q7 listing carries the same air-suspension qualification. Cars specified with adaptive air suspension, and cars with a sport suspension option, use a different stop, so the number alone should not be assumed to fit every Touareg or Q7 of the years above.
Three details settle which stop is correct: the vehicle identification number where available, the suspension type on the build specification, and the axle position being repaired. Front and rear stops on this platform are separate components and are not interchangeable. Where the suspension type cannot be confirmed, a photograph of the old part usually resolves it faster than any catalogue.
The numbers below appear against this application in aftermarket catalogues. Supersession and variant chains are common on this platform, so treat the list as a starting point for verification rather than proof of identity.
| Number or brand reference | Status |
|---|---|
| 7L0512131B | Reference number used on this page |
| 7L0 512 131 B | Spaced form of the same number used in Group catalogues |
| 95533310520 | Porsche equivalent reference for the Cayenne application |
| FEBI BILSTEIN 31698 | Aftermarket buffer listed against this OE number |
| SWAG 30 93 1698 | Aftermarket buffer listed against this OE number |
| MEYLE 100 742 0031 | Aftermarket buffer listed against this OE number |
| OPTIMAL F8-7807 | Aftermarket buffer listed against this OE number |
| TOPRAN 113 186 | Aftermarket buffer listed against this OE number |
| VAICO V10-3363 | Aftermarket buffer listed against this OE number |
| FEBEST VWD-001 | Aftermarket buffer listed against this OE number |
| ORIGINAL IMPERIUM 35097 | Polyurethane buffer listed for this OE number, rear axle |
One point worth checking before comparing prices: on this platform a number of aftermarket listings are supplied as a dust cover and bump stop kit rather than as a standalone bumper, and a kit price is not comparable with a bumper price. Third-party brand names are shown for cross-reference only and imply no connection with those manufacturers.
Polyurethane suits this class of part because the formulation can be tuned. Adjusting the mix shifts hardness, rebound and compression set, so one body shape can be produced for a comfort-oriented vehicle or a heavier load case. Compared with conventional rubber it resists tearing better, is less affected by oils and road salt, and holds its shape longer under repeated compression.
| Property | Polyurethane stop | Conventional rubber stop |
|---|---|---|
| Repeated compression | Holds shape well across the service interval | Tends to take a set earlier |
| Oil, salt and abrasion resistance | Good | Moderate |
| Hardness options | Wide range, tuned per application | Narrower range |
| Load capacity in a small profile | Higher | Lower |
For the wider range of shapes and hardness grades we produce, see our polyurethane bump stops section, which covers replacement stops and parts made to customer drawings. Stops are commonly bought alongside related suspension components, and our chassis and suspension range shows what can be consolidated into one shipment.
The enquiry behind this part often comes from an importer evaluating a supply channel rather than shopping for one number, which changes what a useful reply looks like. An intermediary adds a margin layer between the buyer and the mould; working direct means tolerances, hardness, packing and inspection criteria are discussed with the party that runs the press, so an agreed change reaches production without being reinterpreted on the way.
Stops of this profile are produced by casting or moulding, depending on geometry and hardness. The route is agreed at the sample stage because it sets tooling cost and the achievable tolerance band. Buyers evaluating a supplier normally ask for the following, which we prepare to order rather than bundle automatically:
Related items sit in our shock absorber parts programme, which covers stops together with the surrounding suspension components.
Purchasing enquiries reach a supplier through a few predictable routes, and knowing which one the buyer used makes it easier to answer correctly in the first reply.
A buyer searching for 7L0512131B or 7L0 512 131 B knows the application and wants a direct replacement, so confirm the reference, the fitment list, the material grade, and whether the item is ex-stock or produced to order. Buyers without a number search by description instead, for example polyurethane rear jounce bumper, 93 mm suspension buffer, or rubber buffer with a 17 mm bore. Those enquiries are broader, so set out the platform coverage and ask for vehicle details or a sample.
Searches that start from the vehicle, such as rear suspension bump stop for Touareg or jounce bumper for Audi Q7, usually come from repair shops and smaller distributors serving German SUV owners. A clear fitment list and a cross-reference table keep those enquiries short.
Importers often search for a China strut bump stop factory rather than for the part itself, because the real question is whether the channel is reliable. What answers it is capacity, production route, quality system, packing and lead time, not a claim in an advertisement. Buyers who already hold a mould, drawing or competitor sample usually want the same geometry under their own brand; see custom parts for what we need before quoting.
Because the stop compresses before the damper reaches the end of its travel, it protects more expensive parts at the same time. It is often left in place during a spring or damper change, leaving a new damper beside a crushed original stop and a repair that comes back. Signs it has reached the end of its life:
Yes. The reference is listed for the rear axle of the Touareg (7LA, 7L6, 7L7, roughly 2002-2010), the Audi Q7 (4L, roughly 2006-2015) and the Porsche Cayenne (955, roughly 2002-2010), because they were built on a shared Group platform. Porsche catalogues cross-reference the same component to their own number, 95533310520. Send the model year and the suspension type and we will confirm the correct height before you order.
Not necessarily. Dealer catalogue wording for the Touareg carries the qualification without sport suspension and without air ride suspension, and the Audi Q7 listing carries the same air-suspension qualification. Vehicles ordered with adaptive air suspension or a sport suspension option use a different stop, so we ask for the build specification or the VIN rather than assuming the number alone is enough.
The kit combines the dust cover and the bump stop and is listed by several aftermarket suppliers as a set. This page describes the bumper on its own. Both approaches can meet a repair requirement, but the prices are not comparable, so confirm what a competing offer actually contains before using it as a benchmark.
Yes. Send a drawing with the key dimensions, or a physical sample for reverse engineering, together with the required hardness and expected service conditions. We will confirm feasibility and the tooling route. OEM and custom design support is standard rather than a special arrangement.
If you are sourcing this reference for a workshop, a distribution programme or a private-label line, send the quantity, the destination port, and any packing or documentation requirements. We will reply with the price, the confirmed application list, and the delivery schedule. Quote Bonpora number 4110008 to route your enquiry to the correct production file.
