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When a second generation Volkswagen Touareg develops a knocking sound over bumps, or a front coil spring is replaced after fatigue, the polyurethane ring at the top of the spring is easy to overlook. OE number 7P0411177 is that ring: the upper coil spring insulator, listed in Volkswagen catalogs as an upper seat packing, fitted between the top coil of each front spring and the steel seat above it. Bonpora supplies this part as an OE-pattern polyurethane replacement under number 4110181, serving importers, wholesalers and suspension rebuilders worldwide.
The Touareg 7P uses a double wishbone front axle, and on versions with conventional steel suspension each front coil spring is clamped between a lower seat on the suspension linkage and an upper seat under the spring tower. The insulator 7P0411177 is a flat annular disc, about 125 mm in outer diameter with an 81 mm bore and an 18 mm height, and it sits directly on the upper end coil.
The part performs three jobs at once. It spreads the high spring load of a heavy SUV over a wider contact area so the coil does not cut into the steel seat. It separates metal from metal, which removes the path for coil slap and road-induced ringing that would otherwise pass into the body structure. It also lets the spring rotate slightly on a low friction surface as the suspension strokes, so the coil does not wind up and scrub its seat.
When the insulator hardens, flattens or cracks, drivers feel clunks over potholes and creaking at low speed with full steering lock. Replacing a coil spring without renewing this seat is a frequent cause of comebacks, because a worn insulator quickly damages the coating of the new spring.
Number 7P0411177 applies to the second generation Touareg, platform 7P, in production from 2010 to 2018. North American dealer catalogs list the part for model years 2011 through 2017 across the 3.6 liter VR6 petrol, the 3.0 liter V6 TDI and the Touareg Hybrid, and the catalogs explicitly show it on the Hybrid version. United Kingdom parts specialists describe the same number as the upper front coil spring insulator, which fixes the service position on the front axle, one piece per side.
The decisive fitment qualifier is suspension type. This insulator exists for coil spring suspension only: vehicles with air suspension carry an air spring module at the front and do not use this part. Because the same model year left the factory with either suspension, buyers should confirm the VIN before quoting a price.
| Model | Model years | Engines in catalog | Front suspension |
|---|---|---|---|
| VW Touareg 7P5 | 2011-2015 | 3.6 FSI VR6, 3.0 TDI | Coil spring, part fits |
| VW Touareg Hybrid 7P5 | 2011-2014 | 3.0 supercharged hybrid | Coil spring, part fits |
| VW Touareg 7P5 TDI lines | 2011-2016 | 3.0 TDI Lux, Sport, R-Line, Executive | Coil spring, part fits |
| VW Touareg 7P6 facelift | 2014-2018 | 3.6 FSI, 3.0 TDI | Coil spring, part fits |
| VW Touareg all 7P | 2010-2018 | any engine | Air suspension: part not used |
Buyers search this component under three different names, and all of them point to the same part. In the official Volkswagen catalog the number appears as an upper seat, upper seat packing or coil spring insulator. European aftermarket platforms file it under spring seats and insulators. Suppliers of rubber and polyurethane buffers, including Bonpora, list it in the strut bump stop family because it shares material, tooling and inspection methods with classic compression buffers. This is why a search for a Touareg bump stop often returns a flat seat ring instead of a tall conical buffer.
For ordering, the OE number and the shape decide: a flat ring 125 mm across and 18 mm high. Distributors who supply suspension shops can complete their program with the wider range of spring seats and insulators from the same factory.
Several Touareg suspension numbers appear in the same searches, and mixing them is the most common sourcing error around this part.
| Number | What it is | Notes for buyers |
|---|---|---|
| 7P0411177 | Upper front coil spring insulator | Subject of this article, Touareg 7P coil suspension |
| 7L0411177 | Upper seat packing, first generation Touareg 7L | Model years 2004-2010, above spring, without air suspension, different size, not interchangeable |
| 7L0512131B | Rear axle strut bumper, Touareg 7L and Audi Q7 4L | Conical 90 mm buffer, aftermarket references Febi 31698, Meyle 100 742 0031, Topran 113 186 |
| 7P6411105AC to AG | Front coil springs, Touareg 7P facelift | Shown in the same parts diagram as the insulator |
| 7P0412137 | Spring cover | Listed in the same front spring assembly |
Aftermarket coverage for 7P0411177 itself remains thin: most established European brands do not publish a direct cross reference, so the genuine VW number stays the identification anchor. Bonpora produces to OE sample and drawing, which closes this gap for wholesale buyers.
| Item | Specification |
|---|---|
| OE number | 7P0411177 |
| Bonpora number | 4110181 |
| Product family | Strut bump stop and spring insulator |
| Fitting position | Front axle, upper spring seat, left and right |
| Material | Polyurethane |
| Bore, inner diameter | 81 mm |
| Outer diameter | 125 mm |
| Height | 18 mm |
| Weight | About 0.05 kg per piece |
| Country of origin | China |
| Packaging | Neutral export packaging |
| Warranty | 1 year |
| Delivery time | 15-30 days |
Catalog data for the genuine part quote about 12.5 cm in diameter and 1.7 cm in height. The small difference to the table above comes from measuring points and material flash tolerance; both entries describe the same component.
Original elastomer seats age with heat, oil mist and compressive set, and a flattened seat lets the spring work directly against steel. Bonpora moulds 4110181 in polyurethane because this material holds its shape under the static load of a two ton SUV far better, resists abrasion where the end coil micro-moves, and keeps its damping character across a wide temperature range. The same material logic runs through the polyurethane bump stops program, so buyers can source a consistent buffer range from one supplier.
| Property | Conventional filled rubber | Polyurethane |
|---|---|---|
| Permanent set under static load | Higher, the seat flattens with age | Lower, keeps thickness |
| Abrasion against the end coil | Wears and crumbles | Markedly more resistant |
| Aging from ozone and heat | Surface cracking | Slower degradation |
| Load capacity for a given size | Lower | Higher |
Workshops should check the upper insulator whenever a Touareg 7P front axle is opened. Typical findings include:
Because the insulator costs a fraction of a coil spring, most suspension specialists renew it together with the springs instead of reusing a worn seat.
The seat is replaced with the front spring removed, so the job naturally combines with spring, shock absorber or top mount work. A spring compressor, basic hand tools and a torque wrench are sufficient. Recommended practice:
No adhesive or extra grease is required. The genuine reference ships at about 0.05 kg per piece, so freight planning for this line is straightforward even in large quantities.
Bonpora manufactures the 4110181 insulator in its own tooling in China and ships worldwide in neutral export packaging. Standard terms for this line:
Beyond the catalog program, the factory develops custom rubber and polyurethane parts from drawings or samples for fleet operators, suspension brands and private label buyers, including dedicated tooling for numbers that European brands no longer cover.
Send your target quantity, destination port and any private label requirements to the Bonpora sales team. A quotation for OE 7P0411177, number 4110181, with packing details and freight options is normally returned within one working day. Samples are available for quality verification before a first container order.
It is the same part under different trade names. Volkswagen catalogs call it an upper seat, upper seat packing or coil spring insulator, while buffer suppliers list it in the strut bump stop family. Physically it is a flat ring, 125 mm outer diameter, 81 mm bore and 18 mm high, fitted above the front coil spring of the Touareg 7P.
No. The insulator serves coil spring suspension only. Air suspension versions carry an air spring module at the front axle and have no coil spring seat of this type. Confirm the suspension type by VIN or by a photo of the removed spring before ordering.
Two. The part is fitted at the upper end of each front coil spring, one on the left side and one on the right side. Suppliers should quote and pack in pairs, because workshops normally renew both sides during one spring service.
No. 7L0411177 is the corresponding upper seat packing for the first generation Touareg 7L, model years 2004 to 2010. The two numbers cover different platforms with different dimensions, so they are not interchangeable. The rear axle buffer of the older Touareg, 7L0512131B, is a further different part that appears in the same search context.
