sales@bonporaparts.com
0086-10-64988621
English
The strut bump stop catalogued under OE number 5N0511359F is the rear suspension jounce bumper for the Audi Q3 (8U series). Genuine Audi parts systems list the reference as a Jounce Bumper for the rear axle, specified for front-wheel-drive cars with sport suspension, and VW-group catalogue platforms carry the same 5N0 511 359 number as an original reference shared by Audi, Volkswagen, Skoda, and Seat. This page describes the part as supplied by Bonpora (number 4110213), a China-based factory producing polyurethane bump stops in wholesale quantities as original and replacement parts, and sets out the specification, fitment, and sourcing details wholesale buyers normally request.
The part is a moulded elastomer cylinder fitted over the piston rod of the rear shock absorber, inside the coil spring. Under normal driving it hangs clear of its engagement surface. During a hard compression event — a pothole or a fully loaded boot — it engages progressively and converts what would otherwise be a metal-to-metal impact into controlled resistance.
Two details matter when comparing quotations. First, 5N0511359F is a rear-axle reference: genuine listings install it on the rear shock absorber shaft, one per side and two per axle. Second, the naming varies between catalogues — Audi and VW systems use Jounce Bumper or Shock Bumper, UK sellers say rear bump stop, and aftermarket listings read rubber buffer, suspension. All of these terms describe the same elastomer element.
The Audi Q3 is a compact SUV, and passengers, luggage, and roof loads all raise the frequency of full-stroke compression at the rear axle. Elastomer parts also age whether the vehicle is driven or parked: heat, ozone, and road salt harden the material until it cracks and loses its progressive response. First-generation Q3 vehicles have been in service for well over a decade, so the component belongs in every rear suspension service job on these cars. For the wider suspension range, see our auto parts catalogue.
The 5N0511359F reference sits in the rear suspension group of the VW-group parts catalogue. It is a classic wear item rather than a repair part: no machining or adaptation is involved, so workshops renew the stop whenever a rear damper or spring is opened, and wholesalers stock it as a fast-moving service line.
| Parameter | Value |
|---|---|
| Product name | Strut Bump Stop |
| OE number | 5N0511359F (5N0 511 359 F) |
| Bonpora no. | 4110213 |
| Fitment | Audi Q3 (8U), rear axle |
| Position | Rear, one per side, two per axle |
| Dimensions | Φ15 x Φ65 x 129.5 mm |
| Material | Polyurethane |
| Country of origin | China |
| Warranty | 1 year |
| Delivery time | 15–30 days |
| Packaging | Neutral export packaging |
| Custom service | OEM & custom design support |
Φ15 mm is the bore that slips over the damper rod, Φ65 mm is the outer diameter of the elastomer body, and 129.5 mm is the free length. These figures sit well with the packaging data quoted for genuine stock of this reference — roughly 130 x 60 x 60 mm boxed at just under 0.1 kg. Published figures can differ slightly between sources, and the dimensions taken from the removed part remain the deciding check: a taller stop firms the ride and holds the suspension part-way into its stroke, while a shorter one lets the damper knock.
Polyurethane suits this duty cycle well. Compared with conventional rubber it resists tearing and oil exposure better, holds its mechanical properties across a wider temperature range, and can be moulded to a controlled hardness so the compression curve stays progressive rather than abrupt. It also suits vehicles that stand still for long periods, where parked elastomer goes brittle at the surface first.
Genuine Audi listings carry 5N0-511-359-F as the rear jounce bumper for the Audi Q3 (8UB/8UG), with the F revision specified for front-wheel-drive cars with sport suspension; some sellers group it with quattro applications as well. Because the Q3 shares its underpinnings with the first-generation VW Tiguan (5N), catalogue platforms list the 5N0 511 359 number as an original reference of Audi, VW, Skoda, and Seat, and show the revision family across the VW Tiguan (2008–2017), the VW Touran (2011–2015), and the Audi Q3 (2012–2018). Quote the F revision primarily for the Q3, and treat the wider group coverage as a cross-reference to verify, not an automatic fit.
The 5N0-511-359 number has run through several revision suffixes, and they are not interchangeable. Genuine VW listings show a 133 mm version and a 143 mm version on the same Tiguan platform, qualified by drivetrain and suspension — for example AWD, 143 mm, with sport suspension — and a European listing quotes roughly 150 mm for the C revision under the 1JN PR code. The suffix therefore encodes suspension configuration as much as production date, and two stops with the same 5N0 prefix but different suffixes can differ in free length by well over a centimetre — enough to change ride height and engagement.
Demand behind this reference comes from two buyer groups: wholesalers and distributors covering the independent aftermarket in regions where the first-generation Q3 and its 5N-platform relatives still run in large numbers, and Audi and VW specialist workshops that need predictable wear-part supply for rear suspension jobs. Both are served from the same tooling and quality system, with export packaging that drops straight into a distribution network.
When comparing quotations for a polyurethane stop, ask the supplier for the material grade and Shore A hardness, a dimensional inspection report covering bore, outer diameter, and free length, and evidence of batch-to-batch hardness consistency. A factory answering those questions with documents is normally the safer partner for repeat programmes.
A factory with OEM and custom design capability can produce stops to a customer drawing or sample, including non-standard bore sizes, alternative hardness grades, and application-specific profiles. Stocked references ship in wholesale quantities within 15–30 days in neutral export packaging ready for relabelling; new tooling is quoted against the drawing and an agreed annual volume. Our auto parts sourcing team can review drawings, samples, and cross-reference lists alongside catalogue items.
A worn rear bump stop is often discovered during damper or spring replacement, but it can also be diagnosed from the driver’s seat before the vehicle goes on the lift.
The stop is fitted one per side, and standard practice is to replace the pair on the axle together. Bump stops are normally renewed together with the damper dust protection kits, which share the same access procedure and service life, while the rear dampers are off. Support the suspension before releasing the damper fasteners, torque the components at normal ride height, and compare old against new to confirm bore, diameter, and free length.
Genuine Audi listings carry the reference as the rear jounce bumper for the Q3 (8U series), specified for front-wheel-drive cars with sport suspension, and some sellers extend it across quattro variants. The wider 5N0 511 359 family is catalogued across the VW Tiguan (5N), the Touran, and the Q3 under Audi, VW, Skoda, and Seat original numbers. Because the revision suffix encodes suspension configuration, confirm the application with the number on the removed part, the PR code, or the VIN.
No. The revision series (A, B, C, F) carries different free lengths and configuration qualifiers — genuine listings note 133 mm and 143 mm variants for the Tiguan and roughly 150 mm for the C revision. Quote and stock them as separate items.
Minimum order quantities depend on whether the item is a stocked catalogue reference or a custom moulding. Stocked references ship from current stock; private-label or custom profiles are quoted against tooling and an agreed annual volume. Send the target models and annual quantity to receive terms that match your programme.
Quoted delivery is 15–30 days for stock-referenced items, with neutral export packaging prepared for sea or air freight. Confirm the shipping method and destination port when requesting the quotation.
If you are sourcing rear strut bump stops for Audi Q3 applications in wholesale quantities, or planning a private-label VW-group suspension programme under your own brand, send the OE number, target models, and annual volume. The factory can confirm availability, provide dimensional and material data, and quote on export or private-label terms.
