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A worn front bump stop changes how a Touareg rides long before the shock absorber fails. The compact rubber buffer that sits on the damper rod takes the hardest hits on rough ground, and once it crumbles the strut bottoms out metal to metal. This guide covers OE 7P6412303B, the front suspension strut bumper used across Volkswagen Touareg 7P models, and explains how to source it in volume, what the dimensions mean, and how a polyurethane replacement compares with the original rubber part.
7P6412303B is listed by Volkswagen under several names in the same catalogue position: suspension strut bumper, stop, stopper and buffer. It is not a mounting bush and it is not the coil spring itself. The part is a moulded buffer that fits over the damper rod inside the front strut assembly. As the suspension compresses, the buffer is squeezed between the strut mount and the damper body, absorbing the last part of the travel before hard contact occurs.
The 7P6 prefix identifies the Touareg 7P generation and its platform relatives, while 412303 places it in the front axle strut group. Recognising that pattern makes it much faster to spot the correct buffer when a buyer or a mechanic sends only a partial number.
OE numbers vary slightly between catalogue releases, so dimensions are the reliable cross-check. The table below lists the specification we produce and stock for this reference.
| Parameter | Value |
|---|---|
| Product name | Strut Bump Stop (suspension strut bumper) |
| Bonpora No. | 4110182 |
| OE reference | 7P6412303B |
| Fitting position | Front axle, left and right |
| Dimensions | 19 mm bore x 62 mm outer diameter x 87 mm height |
| Material | Polyurethane (PU) |
| Country of origin | China |
| Warranty | 1 year |
| Delivery time | 15-30 days |
| Packaging | Neutral export packaging |
| Custom service | OEM and custom design support |
Each figure has a job. The 19 mm bore is the internal hole that slides onto the damper rod, so it must match the rod diameter closely or the buffer will rattle and wear unevenly. The 62 mm outer diameter controls how the buffer behaves as it is crushed, because it governs how much material is available to take the load. The 87 mm height sets the free length, which determines how much travel remains before the strut reaches full compression.
If a replacement is too tall, the suspension loses travel; if it is too short, it stops protecting the damper too early. This is why a supplier who can measure the original part, rather than simply copying a reference number, is worth more to a distributor.
The 7P generation Touareg shares its front strut layout with the Audi Q7 4L, which is why the same buffer appears in both catalogues. The table below summarises the applications we confirm for this reference.
| Model | Chassis / Generation | Years | Axle position |
|---|---|---|---|
| Volkswagen Touareg | 7P, second generation | 2011-2017 | Front, left and right |
| Volkswagen Touareg Hybrid | 7P, FHEV 3.0 V6 | 2011-2017 | Front, left and right |
| Volkswagen Touareg TDI / V6 | 7P, 3.0 TDI and 3.6 V6 | 2011-2017 | Front, left and right |
| Audi Q7 | 4L, shared front strut group | 2007-2015 | Front, left and right |
On the 7P Touareg the part number is applied across petrol, diesel and hybrid drivetrains, and it is common to both sides of the vehicle, so a full front axle service normally means two pieces per car. Earlier first generation Touareg models use different front buffers, and the rear axle on the 7P platform takes a separate coil spring damper, so axle position must always be confirmed before an order is placed.
Buyers often assume the front and rear buffers of one vehicle are the same. On the Touareg 7P they are not. The rear suspension uses a coil spring damper that is mounted inside the spring, while the front axle uses this strut bumper on the damper rod. The two parts look similar in photographs and carry related numbers, which is a frequent source of wrong shipments in this category.
A Touareg is a heavy vehicle, and the front strut buffer works harder than the equivalent part on a compact car. Several conditions shorten its life:
When the buffer has failed it is sensible to check the dust cover and the top strut mount at the same time, because a collapsed buffer usually means the mount has been taking forces it was never designed for.
The original equipment part is a rubber buffer, and rubber does its job well when it is new. Polyurethane is the more durable option for the aftermarket, and for a heavy SUV front axle the difference is measurable in service life rather than in specification sheets.
| Property | Standard rubber | Polyurethane (PU) |
|---|---|---|
| Resistance to tearing | Moderate | High |
| Oil and ozone resistance | Lower | Better |
| Load carrying under repeated compression | Falls away as it ages | Holds up longer |
| Hardness choice | Limited | Available across a wide range |
| Behaviour after long service | Hardens and cracks | Retains form |
For distributors, the practical point is repeat business: a buffer that survives several seasons reduces warranty claims and returns. If you would like to compare material options and hardness grades in more detail, our polyurethane bump stops range sets out the specifications we mould most often.
Cross-referencing correctly avoids the most expensive mistake in this category, which is ordering a buffer for the wrong axle or the wrong generation. A short, disciplined check settles it:
European and North American distributors increasingly buy suspension buffers directly from Chinese manufacturers for three reasons: consistent mould quality, the ability to specify hardness and material, and pricing that supports competitive resale. The requirement is to choose a factory that works from measured samples and documented references rather than from photographs alone. Our shock absorber parts section covers the wider range of buffers, dust covers and strut components we produce for the same platform families.
We produce 7P6412303B as a direct replacement for the original buffer and also accept custom work. That includes moulding to a sample you send, adjusting bore, diameter or height for a modified suspension, selecting a different polyurethane hardness, and applying your own brand and packaging. Neutral export packaging is standard, and orders usually ship within 15 to 30 days depending on quantity and specification.
For distributors planning a programme rather than a single order, it is worth discussing a mixed container with related buffers, dust covers and strut mounts for the same vehicle families. Consolidating references reduces freight cost per piece and simplifies inventory for workshops that service several VW Group models.
No. The C suffix is a later revision of the front strut bumper, and 7P6512131B is the rear coil spring damper for the same vehicle. Before ordering, match the number you were quoted against the axle position on the car. If you only have a partial number, send the full reference together with the VIN and we will check it.
The buffer is fitted on both sides of the front axle, so plan for two pieces per vehicle when replacing the front suspension buffers. Workshops usually replace them in pairs because both sides see similar service conditions.
Yes, provided the dimensions match, the polyurethane replacement can be fitted in place of the rubber original. Polyurethane generally lasts longer under repeated compression and resists oil and ageing better, which suits a heavy SUV front axle. Road comfort is tuned by hardness, and a standard hardness grade keeps ride quality close to the original.
The same front strut group is used on the Audi Q7 4L, so this buffer is applicable there too. Because catalogues vary between markets and model years, confirm your chassis code and axle position when enquiring.
Send us the OE number 7P6412303B, the chassis code of the vehicle and the quantity you need, and we will return pricing, lead time and packaging details. If you are working from a measured sample instead of a number, include the bore, outer diameter and height and we will confirm whether it matches our existing mould. Detailed contact options are listed on our contact information page.
