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7L6412303 is a front axle strut bump stop, also listed by suppliers as a jounce bumper, stopper or shock absorber rubber buffer. It sits on the front damper rod and compresses before the coil spring reaches full travel, so the suspension does not bottom out metal to metal. Volkswagen built this buffer for the Touareg (type 7LA, 7L6 and 7L7) sold from roughly 2002 to 2010, and the part fits the left and right side in the same shape.
The one detail that decides whether this number is correct for a given vehicle is simpler than most buyers expect: the dealer catalogue describes 7L6412303 as "without air suspension". If the vehicle was ordered with air suspension, the front buffer is a different reference, and the two are not interchangeable. We explain that split in detail below, because it is the single most common purchasing error on this platform.
Bonpora supplies this buffer as item 4110007, produced in China in polyurethane with an outside diameter of Φ20.2 mm at the bore, Φ62.3 mm at the flange and an overall height of 58.8 mm. [Polyurethane bump stops] of this type are a direct replacement for the original rubber part and are supplied with a one year warranty.
The table below lists the parameters we hold for this reference. Buyers who need a formal drawing before ordering can request one; the values here can be checked against your own sample.
| Parameter | Value |
|---|---|
| Product name | Strut Bump Stop (front axle jounce bumper) |
| OE reference | 7L6412303 (also written 7L6 412 303) |
| Bonpora No. | 4110007 |
| Bore diameter | Φ20.2 mm |
| Flange diameter | Φ62.3 mm |
| Overall height | 58.8 mm |
| Material | Polyurethane (PU) |
| Fitting position | Front axle, left and right |
| Country of origin | China |
| Warranty | 1 year |
| Delivery time | 15-30 days |
| Packaging | Neutral export packaging |
| Custom service | OEM and custom design support |
Note on the height figure: aftermarket catalogues list this application at a nominal 58 mm, while our drawing is 58.8 mm. The difference is under one millimetre and reflects how each supplier measures the flange edge. We publish the drawing value rather than rounding it to match a catalogue.
The Touareg was offered with two completely different front suspension designs, and each uses its own bump stop. Getting this wrong is the most expensive mistake in this part number, because the vehicle either sits on the wrong spring rate or the buffer arrives in a shape that cannot be seated on the damper.
Steel coil spring front suspension uses this reference. The dealer listing states it plainly: "Touareg. Without air suspension." It is sold as a single item and fits both sides, and there is no paint mark or sport designation attached to it in the base application.
Air-sprung front ends use 7L0412303A, whose catalogue description reads "With air suspension", and which is listed as being included with the shock assembly rather than sold as a loose buffer. It is a taller, wider component matched to the air strut. The two references are frequently confused because they look similar online and the last six digits appear nearly identical.
| Vehicle front end | Reference | Catalogue wording |
|---|---|---|
| Steel coil spring | 7L6412303 | Without air suspension |
| Air suspension | 7L0412303A | With air suspension; included with shock assembly |
Before quoting, confirm the build. A VIN check against the factory parts database, or a photograph of the existing front strut, settles it in seconds and prevents a return shipment.
Dealer catalogues group this buffer under the first-generation Touareg, which spans the 7LA, 7L6 and 7L7 type codes and model years from 2002 to 2010. Because the same front suspension was used across the engine range, one reference covers petrol, diesel and the heavier V8 and V10 TDI variants.
| Model | Type code | Years | Notes |
|---|---|---|---|
| Touareg | 7LA, 7L6, 7L7 | 2002-2010 | Steel spring front axle, left and right |
Aftermarket fitment tables for 7L6412303 list the 3.2 V6 petrol (AZZ, BKJ, BMX, BRJ), 3.6 V6 FSI (BHK, BHL), 4.2 V8 (AXQ, BAR), 6.0 W12 (BJN, CFRA), 2.5 R5 TDI (BAC, BPE, BLK) and 3.0 V6 TDI (BKS, CATA, BUN, CASA) as well as the 5.0 V10 TDI (AYH, BWF, BLE, CBWA). The buffer itself does not change across these engines.
The Audi Q7 and Porsche Cayenne share the PL71 platform with the Touareg, and cross-reference lists do group 7L6412303 across the Volkswagen, Audi, Porsche and Skoda databases. That grouping reflects shared catalogue entries, not a blanket promise of fitment. Q7 and Cayenne front ends are frequently air-sprung, in which case the correct reference is the air-suspension part. Treat the shared platform as a lead to verify, not as approval to ship.
If your stock system is keyed on an aftermarket number rather than the OE reference, the table below maps the most common equivalents. Every number here is a cross reference only; it does not imply any affiliation or endorsement by those manufacturers.
| Brand | Reference | Notes |
|---|---|---|
| FEBI BILSTEIN | 170374 | PU, length 58 mm, weight 0.060 kg |
| SWAG | 33 10 0212 | PU, front axle both sides |
| MEYLE | 100 640 0023 | Front axle |
| TOPRAN | 113 979 | Rubber buffer, suspension |
| CAUTEX | 771964 / P771964 | Height 58 mm, diameter 20 mm |
| ORIGINAL IMPERIUM | 35133 | Front axle, weight 52 g |
| OPTIMAL | AK-735188 | Supplied as dust cover kit |
| SACHS | 900 314 | Front axle |
| MAXGEAR | 72-3361 | Front axle |
| BIRTH | 52535 | Front axle |
Several numbers above, including the OPTIMAL and KAMOKA entries, are sold as a dust cover kit that bundles the buffer with the protective boot. A kit price is not comparable with a single-buffer price, so ask your supplier to state the contents before comparing quotations. Our part is supplied as a single buffer, and we can quote the boot separately if your rebuild needs one.
The factory part is rubber. Bump stops are consumable: they take repeated compression at full suspension travel, and on a heavy SUV that duty cycle shortens their life. Polyurethane holds its shape better under that load, which is why a large share of the replacement market for this reference is now PU.
| Property | Original rubber | Polyurethane replacement |
|---|---|---|
| Compression set | Higher after many cycles | Lower, recovers its height |
| Oil and ozone resistance | Moderate | Better |
| Cell structure | Micro-porous, can crumble | Micro-cellular, holds together |
| Typical failure mode | Crumbling, splitting at the bore | Slow loss of height |
| Service feel | Softer initial contact | Slightly firmer, more progressive |
On a Touareg with steel springs, a worn front buffer shows up as a dull knock over speed bumps and, in bad cases, marks on the damper body where the spring seat has been contacting. Replacing buffers in pairs is the practical approach: both sides have covered the same distance.
Purchasing teams reach this component through several different routes, and each one lands on a different set of fields, so it is worth making all of them available in one place.
Searches such as "front strut bump stop 58 mm polyurethane" or "jounce bumper Φ20.2 bore" rely on the dimensional block. If you are matching against a sample rather than a number, send the bore diameter, flange diameter and height and we will confirm against 4110007.
When the goal is a second source rather than a single unit, the search is usually "strut bump stop manufacturer" or "jounce bumper factory China". Our production is [chassis and suspension parts] and the reference is a stock line, not a one-off run.
Buyers holding 7L6412303 or 7L6 412 303 search the number directly. Because the number appears across several brand databases, it is worth checking the aftermarket equivalent at the same time and confirming that the equivalent is described as a front axle buffer and not an air-suspension component.
"Touareg front bump stop" and "Touareg 7L6 jounce bumper" are common, and they need the year range and the suspension type to return a correct result. Quote the model year and whether the vehicle is air-sprung.
Distributors who need their own packaging or a printed brand on the buffer can use our [custom parts service]. Tooling is not required for a standard profile, and private label programmes run against the same dimensional control as the standard line.
A few practical points from the assembly diagram and from workshop practice save time during replacement.
The buffer mounts on the front damper rod, above the dust cover, and is held by the upper mounting hardware. On the exploded view for this front suspension the buffer is item 8, required quantity 1 per side.
Because the two front corners wear at the same rate, replacing one buffer and leaving the other is a short-term fix. Order two per vehicle.
While the strut is apart, inspect the dust cover or boot (cover 7L0412137 in the same diagram) and the upper mounting (7L0412327A). A perished boot lets grit reach the damper rod and shortens the life of the new buffer.
Do not cut or trim a buffer to make it seat, and do not substitute the air-suspension reference in a steel-spring strut. Neither is a repair, and both change the suspension travel limits.
Bonpora holds this buffer as a stock line under item number 4110007. Standard lead time is 15-30 days depending on order size and production scheduling, and goods ship in neutral export packaging so your own branding can be applied on arrival. Mixed containers combining this buffer with other suspension references are routine, which is usually where the freight saving is made.
For a quotation, send the OE reference 7L6412303, the quantity per side and your destination port. If you are buying against a sample rather than a number, include the three main dimensions and we will match the profile before quoting.
No. Dealer catalogues describe 7L6412303 as "without air suspension". Air-sprung front ends use 7L0412303A, which is a different shape and is normally supplied with the shock assembly. Confirm the suspension type by VIN before ordering, and ask us to re-check the reference if you are unsure.
One per side, so two per vehicle for the front axle. The part fits the left and right side in the same shape, and there is no handed version. Replacing both at the same time is the sensible approach given equal wear.
Our figure is taken from the production drawing. Some aftermarket catalogues quote a rounded 58 mm, which is the same component measured to a slightly different reference point on the flange. Either figure identifies the correct part; if you are matching a sample, check the bore and flange diameters as well.
Yes. Standard profiles do not require new tooling, and we support own-brand packaging and marking under our custom service. Send the target quantity and your artwork requirement and we will confirm the schedule with the quotation.
If you are sourcing [shock absorber parts] for the first-generation Touareg, send us the reference 7L6412303 together with your quantity and destination port. We will confirm availability, price and lead time, and we can supply a drawing for verification before the order is placed.
For buyers comparing several suspension references at once, include the full list in one message. It is often cheaper to consolidate them into a single shipment, and we will tell you which items are held in stock and which are produced to order.
