Mercedes-Benz Strut Bump Stop 2463210206 | OEM Replacement Supplier & Custom Manufacturer

The front strut bump stop OE 2463210206 is the jounce bumper fitted inside the front MacPherson struts of the Mercedes-Benz B-Class W246 family and the GLA X156 crossover. Seated over the damper piston rod inside the dust boot, this cellular polyurethane element is the final cushion of the front suspension: at full compression over a pothole, a speed bump or a laden descent it absorbs the last of the travel before metal can meet metal. Bonpora manufactures the equivalent replacement under part number 4110137, with OEM and custom design support for importers, wholesalers and repair networks.

The number entered service with the third-generation B-Class, the W246 launched in November 2011 as the start of the Mercedes-Benz MFA front-wheel-drive platform family. The GLA, the raised crossover derivative introduced in December 2013, carried the same front suspension architecture into the compact SUV segment. With large and ageing B-Class and GLA populations across Europe, North America and Asia, the front buffer is now a routine service part, ordered by OE number, by cross reference and by measured size.

What the 2463210206 Strut Bump Stop Does

Inside the front strut, the damper controls spring movement through most of its stroke, and the final section of travel is reserved for the bump stopper. As the suspension reaches full compression, the buffer is squeezed against its seat and its progressive cellular structure stiffens, slowing the motion smoothly instead of transmitting a hard stop into the strut body. Mercedes-Benz catalogues list the part as a suspension strut bumper and European suppliers index it as a front rubber buffer; workshop practice treats strut bump stop, jounce bumper and Anschlagpuffer as names for one component.

Protection for the damper seal and top mount

Full-compression events without a working cushion drive shock loads straight into the damper rod, the oil seal and the upper mounting. A collapsed, crumbling or missing buffer is a common root cause of knocking over speed bumps, of premature damper seal leakage and of harshness reported as a suspension fault on the W246 and X156 chassis. Because the buffer costs little next to a strut assembly, workshops renew it whenever the front struts are opened, and fleets running GLA and B-Class vehicles on rough roads treat it as a planned service item.

Technical Specifications of Bonpora 4110137

The following data describe the Bonpora replacement for Mercedes-Benz OE 2463210206.

The three measurements describe a narrow-bore, tall bumper: an 18 mm central hole passes over the damper rod, the 62.8 mm outer diameter fits the spring seat cavity, and the 86.6 mm height covers the travel reserved for the buffer. FEBI BILSTEIN lists its 184288 cross with a length of 86 mm, a width of 63 mm, inner diameters of 18 and 30 mm and a unit weight of 70 g, and the NIBD range quotes packaging of 8.5 x 6 x 6 cm. The rounded figures agree with the drawing data once measurement points and tolerances are considered, so buyers matching by size should compare against the removed original before ordering.

Fitment: B-Class W246 W242 and GLA X156 Front Axle

TecDoc-based catalogues agree on the application pool for 2463210206: the front axle of the Mercedes-Benz B-Class Sports Tourer, chassis codes W246 and W242, built from November 2011, and the GLA, chassis code X156, built from December 2013, across petrol, diesel, natural gas and electric variants with power ratings between 88 and 381 hp.

The raised ground clearance qualifier

Catalogue data carry an important note alongside this stop: FEBI listings index the part for vehicles with increased ground clearance, and a US Mercedes-Benz dealer catalogue describes the same number for the GLA250, the AMG GLA 45 and the B-Class Electric Drive with the high ground clearance wording. The wording separates ride-height variants inside the covered families: raised bodies and suspension packages use a taller stop, while standard-height applications are listed with other buffer numbers, so the suspension variant decides fitment, not only the model name.

Verify by VIN before ordering

The A-Class W176 and the CLA C117 share the MFA platform with the W246 and X156, yet catalogue coverage for 2463210206 concentrates on the B-Class and GLA bodies. Platform kinship therefore does not extend automatically to this component, since stop heights differ between standard and raised suspension. For quotations, match the OE number, the axle and the ride-height variant, or compare the removed buffer before shipping.

Aftermarket Cross-Reference Numbers for 2463210206

The reference is widely covered by European catalogue brands, which simplifies RFQs by supplier number:

For sourcing, the Mercedes-Benz OE number remains the safest search key, written with or without the A prefix or spaces. Kit references such as the Sachs XTend add the dust bellows for full strut refurbishment, while single buffers suit pairs replacement during damper work.

Symptoms of a Worn or Collapsed Front Buffer

• A sharp knock or bang from the front axle over speed bumps, potholes or washboard surfaces.
• Foam crumbs or dust around the strut, inside the wheel arch or on the dust boot.
• Bottoming out near full load, with harshness transmitted into the body structure.
• Oil weeping from the strut soon after the knocking started, a sign the rod seal has taken repeated impacts.
• A buffer permanently flattened to a reduced height, visible once the dust boot is slipped back.

An unnoticed failed buffer shortens damper life on these workhorse MacPherson struts, so replacing the stop during damper or spring work protects the expensive components of the corner.

Polyurethane versus Rubber for the Front Buffer

The Bonpora replacement is produced in polyurethane, the material family used for modern jounce bumpers.

For buyers building a range of polyurethane bump stops, the Mercedes-Benz reference combines a very large vehicle population with a compact, high-volume part that suits container-level stocking.

Installation Notes for the W246 and X156 Front Buffer

The front buffer is replaced with the strut dismantled and the spring compressed; the following practices apply:

• Replace buffers in pairs so both front struts compress evenly and the vehicle keeps a level stance.
• Inspect the damper rod and dust boot at the same time; a torn boot lets grit attack the rod seal.
• Fit the buffer as specified in the workshop manual; cellular PU needs no lubrication on the rod.
• Check the spring seat and upper mount for cracks while the strut is apart.
• A road test over speed bumps should confirm the knocking is gone; wheel alignment is normally not required when only the stop is renewed.

When to replace the front bump stop

Typical triggers include knocking over speed bumps that persists after damper replacement, visible crumbling during a strut service, a stop flattened below its nominal height and oil contamination from a leaking damper. The buffer sits above the spring seat inside the boot, so inspection takes only minutes once the wheel is off.

OEM and Custom Manufacturing Support from Bonpora

Bonpora is a China-based manufacturer of suspension buffers and related auto parts, serving importers, parts distributors and fleet programmes. For the Mercedes-Benz application the standard reference is part number 4110137, supplied in neutral export packaging for private-label distribution, with a 1 year warranty and delivery in 15 to 30 days.

Beyond the catalogue part, the factory provides OEM and custom design support: production against drawings or samples, hardness tuned to the required compression curve, colour and marking options, and packing to customer specification. Buyers needing a bespoke profile for another line can start from the custom rubber and polyurethane parts service and receive an engineering review before tooling.

To request a quotation for Bonpora 4110137 or a custom equivalent of Mercedes-Benz 2463210206, contact the sales team with the required quantity and destination port; samples can be arranged for axle-set testing before volume orders.

Frequently Asked Questions

Which Mercedes-Benz models does the 2463210206 bump stop fit?

It fits the front axle of the B-Class Sports Tourer W246 and its W242 alternative-drive derivatives, built from November 2011, and the GLA X156, built from December 2013. Catalogue coverage spans the M270 petrol engines, the OM651 and OM607 diesels, the B 200 c natural gas version, the B-Class Electric Drive and the AMG GLA 45, with power ratings from 88 to 381 hp. Catalogue data tie the stop to raised-ground-clearance vehicles, so confirm the suspension variant by VIN.

Is 2463210206 the same as A2463210206?

Yes. The letter A in front of a Mercedes-Benz number is the catalogue prefix used in the electronic parts catalogue, and suppliers list the part under both writings. Retail references such as 246 321 02 06 with spaces refer to the identical component.

Can this stop be used on an A-Class W176 or a CLA C117?

Those models share the MFA platform, but current catalogue coverage for 2463210206 lists the B-Class W246/W242 and the GLA X156. Ride-height variants inside one platform carry stops of different heights, so the platform relation alone is not proof of fitment. Verify by VIN or compare the removed buffer with the size table in this article.

What are the dimensions and material of the Bonpora 4110137 replacement?

Bonpora drawing data record a nominal 18 x 62.8 x 86.6 mm: an 18 mm central hole, a 62.8 mm outer diameter and an 86.6 mm height in cellular polyurethane. FEBI data for the same reference give 86 mm length, 63 mm width, inner diameters of 18 and 30 mm and about 70 g, figures that agree once measurement points are considered.