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A strut bump stop is a small but critical suspension component that protects your struts, keeps ride height stable, and prevents metal-to-metal contact under heavy loads. In this guide, we explain everything international buyers need to know about the Strut Bump Stop for Audi and Volkswagen, OE number 7L0512131C (Bonpora No. 4110102) — including specifications, fitment, material advantages, and how to source it from a reliable China-based supplier.
A strut bump stop (also called a suspension bumper or jounce bumper) is a compressible cushion mounted on the strut rod or shock absorber shaft. When the suspension reaches full compression — for example, when driving over potholes, speed bumps, or carrying a heavy load — the bump stop absorbs the final impact and prevents the strut from bottoming out. Without a functioning bump stop, repeated bottoming-out can damage the strut, coil spring, mounting hardware, and even the vehicle body.
On the Audi Q7 and Volkswagen Touareg platforms, the OE 7L0512131C bump stop is part of the front strut assembly. It is a wear item: over time, polyurethane and rubber compounds harden, crack, or crumble, especially in hot climates or regions where roads are heavily salted in winter. Replacing worn bump stops during strut or shock replacement is a common and cost-effective maintenance practice.
The following table summarizes the main parameters of this part for quick reference during sourcing and quotation:
| Parameter | Detail |
|---|---|
| Product Name | Strut Bump Stop |
| Bonpora No. | 4110102 |
| OE Number | 7L0512131C |
| Fitment | Audi / Volkswagen |
| Size | Φ21 x Φ81 x 75 mm |
| Material | Polyurethane (PU) |
| Country of Origin | China |
| Warranty | 1 Year |
| Delivery Time | 15–30 Days |
| Packaging | Neutral Export Packaging |
| Custom Service | OEM & Custom Design Support |
Before placing an order, we recommend confirming the OE number against the vehicle VIN or the original part removed from the car. Dimensions (Φ21 mm inner bore, Φ81 mm outer diameter, 75 mm height) should also be checked against the sample if you are cross-referencing with catalogs from other suppliers.
The 7L0512131C bump stop is used in the front suspension of large Audi and Volkswagen SUV platforms, most notably:
Because this platform was shared between the two brands and produced in high volumes, demand for replacement suspension parts such as bump stops, strut mounts, and dust cover kits remains strong in Europe, the Middle East, Russia, and South America. Wholesalers and parts distributors often bundle the bump stop with related suspension components to increase order value.
Professional purchasing agents usually verify fitment in three steps:
If you are unsure, sending photos and measurements of your existing sample to the supplier is the fastest way to confirm compatibility before bulk ordering.
The OE 7L0512131C replacement bump stop is manufactured from polyurethane (PU), a material widely used in modern suspension components. Compared with conventional rubber, polyurethane offers several practical advantages:
Quality bump stops are not simple solid blocks. This part uses a progressive-density design: the cellular structure compresses gradually, absorbing light impacts softly while still providing firm support at maximum compression. This behavior reduces harshness over small road imperfections while protecting the strut during severe events such as hitting a deep pothole at speed.
For overseas buyers, the most common sourcing approach is OE-number based procurement. Searching by OE number such as 7L0512131C allows you to:
You can browse the full suspension parts catalog on the Bonpora auto parts catalog, where products are organized by category and OE reference. Each product page lists the OE number, dimensions, and fitment so your purchasing team can verify details before requesting samples.
Beyond standard replacement parts, many distributors and brand owners require customized suspension components. Typical customization needs include:
The supplier provides OEM and custom design support, working from customer drawings, physical samples, or OE references. For new projects, the usual process is: sample submission → dimension and material confirmation → sample approval → mass production. If you have a specific project in mind, you can contact the team through the contact page to discuss minimum order quantities and development timelines.
Every batch of strut bump stops goes through incoming material inspection and finished-product dimension checks. Key QC points include:
The product is backed by a 1-year warranty, which gives distributors confidence when selling into competitive aftermarket channels. All goods are packed in neutral export packaging, so you can either resell directly or apply your own branding.
Standard delivery time is 15–30 days depending on order quantity and production scheduling. Goods can be shipped by sea, air, or express courier, and the team can coordinate with your nominated freight forwarder if preferred.
It fits the front strut suspension of the Audi Q7 (7L) and Volkswagen Touareg (7L) first-generation platforms. Always confirm the OE number on your original part before ordering.
Yes. OEM and custom design services are supported, including private-label neutral export packaging, custom barcodes, and brand-specific carton printing, subject to minimum order quantity.
Polyurethane offers better compression set resistance, wider temperature tolerance, and improved aging resistance compared with conventional rubber, resulting in a longer service life and more consistent damping performance.
MOQ depends on the product and packaging requirements; standard items are usually available with low trial-order quantities. Delivery time is typically 15–30 days after order confirmation.
If you are looking for a dependable supplier of strut bump stops and suspension components for Audi and Volkswagen vehicles, Bonpora can support your business with OE-referenced products, OEM customization, and export-ready packaging. Send your inquiry with the OE number and required quantity, and the sales team will respond with pricing and samples availability. Start by exploring the complete auto parts range or submit your requirement today.
