sales@bonporaparts.com
0086-10-64988621
English
Chevrolet strut bump stop 96859128 is the front suspension bumper listed by GM and ACDelco catalogues for a family of compact Chevrolet cars, and Bonpora manufactures it to drawing data as number 4110130 in micro-cellular polyurethane. This page sets out the fitment range, the nominal dimensions, the way this single reference covers more than one model line, and the commercial details trade buyers ask about before ordering.
The bumper sits on the piston rod inside the front strut assembly, working together with the dust boot. Under normal driving the damper controls wheel movement while the coil spring carries the load. When the strut reaches the last part of its stroke, on a sharp pothole or with the car fully loaded, the cushion compresses progressively, absorbs the remaining energy and prevents metal-to-metal contact between the strut components.
A worn or missing bumper shows up quickly. Workshops report hard knocking over sharp impacts, a harsher ride at full compression, and accelerated wear on the dust cover, top mount and damper internals. Because the part is inexpensive relative to the assembly it protects, technicians usually renew it whenever a strut, spring or mount is opened for service.
GM dealer catalogues and the ACDelco line list reference 96859128 for the front axle, fitted on the left and right sides. The most frequently cited applications are the Chevrolet Sonic across the 2012 to 2020 model years, the Chevrolet Spark from 2013 to 2015 with the 1.2 litre engine, and the Spark EV of the same generation. Catalogue coverage varies slightly between sellers, so the final check belongs with the workshop: confirm against the vehicle identification number or the removed part before ordering in volume.
The parameters published for this replacement are summarised below.
| Parameter | Value |
|---|---|
| Product Name | Strut bump stop (front strut bumper) |
| OE Number | 96859128 |
| Bonpora Nos | 4110130 |
| Fitment | Chevrolet Sonic, Spark, Spark EV |
| Nominal Size (Bonpora drawing data) | Φ22 × Φ63.9 × 57.9 mm |
| Position | Front axle, left and right |
| Material | Polyurethane (micro-cellular) |
| Country of Origin | China |
| Warranty | 1 year |
| Delivery Time | 15-30 days |
| Packaging | Neutral export packaging |
| Custom Service | OEM & custom design support |
Bonpora supplies this bumper inside a wider polyurethane bump stop programme that covers American, European, Korean and Japanese references. Every batch is checked for size and hardness before packing.
Buyers comparing catalogues will notice that the printed figures for this reference are not identical. Several European aftermarket listings describe PU equivalents with a height of about 60 mm and diameters of 19 mm and 27.5 mm, while GM dealer data states roughly 2.9 x 2.9 x 2.5 inches. The differences come from measuring points rather than from different parts: sellers record the bore at the inner diameter, the outer diameter at the widest point or at a flange, and the height either as free height or as assembled height under load.
The Bonpora drawing data of 22 x 63.9 x 57.9 mm is the nominal figure for number 4110130. When matching the part to an application, measure the removed bumper at the same points and remember that a used cushion takes a permanent set, so its height will read lower than when new. Sample pieces are available for physical comparison before a bulk order is confirmed.
Vehicle programmes reuse validated components wherever the geometry allows. A single front bumper design can serve a sedan, a hatchback and a city car when the strut envelope and travel requirements match. Reference 96859128 is a clear example: the same number appears against the Sonic range and the Spark range in GM and ACDelco catalogues, and several listings carry the Spark EV under the identical reference. The electric version shares its basic front suspension layout with the petrol car, and the bumper follows the strut rather than the drivetrain, which is why the number carries over.
For a distributor, a shared reference concentrates demand. One bumper number serves two model families and several engines, from the 1.2 litre Spark to the 1.4 and 1.8 litre Sonic variants, including hatchback and sedan bodies. That means one stock line instead of several, easier container planning, and a single OE number that covers most enquiries from these fleets.
Cross-model fitment is convenient but still needs verification at the workshop level. Engine variants, suspension packages and model year changes can shift catalogue coverage from one market to another. The reliable sequence stays the same: read the reference from the removed bumper where possible, match the three dimensions, and only then commit to a volume order.
The original bumpers on many of these applications were cellular rubber, and most of the equivalents listed for this reference in European catalogues are described as PU. Both materials perform the same function, with different behaviour along the compression curve.
| Property | Cellular Rubber | Micro-cellular Polyurethane |
|---|---|---|
| Compression behaviour | Progressive, softer initial stage | Progressive, firmer late-stage support |
| Shape retention | Permanent set possible over time | Holds shape through repeated cycles |
| Ageing and ozone resistance | Cracking possible at high mileage | Generally strong |
| Oil and grease contact | Swelling possible | Better resistance |
| Typical market role | Original equipment material | Common replacement material |
Neither material is automatically better. Rubber remains entirely serviceable, while polyurethane is chosen where a firmer late-stage cushion and longer shape retention are wanted; many of the aftermarket equivalents sold for this reference are already PU. Buyers who need a specific hardness receive the data sheet with the batch, and the shock absorber parts catalogue lists the matching bump stops, dust covers and mounts for mixed shipments.
Wholesalers building mixed containers often order bump stops by dimension, because one geometry can serve several references across brands. For a 96859128 replacement the checklist is short. Measure the bore that slides over the damper rod, measure the outer diameter that seats against the spring seat or dust cover, and measure the free height of a new part. Compare the three figures with the drawing data above and confirm the material.
Two details deserve attention. First, never measure height on a used cushion as the reference value, because cellular materials flatten permanently after years of compression. Second, check how the bumper locates in the assembly: a 22 mm close-fit bore only works where the rod or guide sleeve matches, so send all three measurements for verification if the original marking has worn away.
Ordering by the OE reference removes the ambiguity of model year ranges and body styles, and it is the fastest route for most trade buyers.
Beyond catalogue supply, Bonpora runs a custom service for buyers who need their own part number, a modified geometry or branded packaging. The engineering team starts from a dimensioned drawing, a physical sample or an existing reference such as this one, and adjusts bore, outer diameter, height and hardness to the application. Tooling is produced in-house, so sampling and revision cycles stay short. Options include customer part number marking, private label bags and cartons, and consolidated loading with other suspension lines; the custom parts page describes the process and the information needed for a quotation.
Suspension cushions work in a demanding environment of wide temperature swings, continuous compression cycles and contact with dirt and moisture, so batch control concentrates on the properties that decide service life. Incoming polyurethane is checked against specification, dimensions are sampled with calibrated tools, hardness is measured on every batch, and visual inspection covers pores, cracks and flash. Finished goods are packed only after the batch record is complete, which keeps every shipment traceable to its production batch.
Standard packing is a poly bag per piece with export cartons sized for stable pallet loading. Neutral export packaging is the default, which lets distributors sell under their own brand where regulations allow. Production lead time is 15 to 30 days from order confirmation and samples usually ship sooner. Bonpora quotes ex-works, FOB and CIF terms and can consolidate these bump stops with dust covers and mounts from the same production base to reduce freight cost.
GM and ACDelco catalogues list the reference for the front suspension of the Chevrolet Sonic from 2012 to 2020, the Chevrolet Spark from 2013 to 2015 and the Spark EV of the same generation, fitted left and right. Coverage details vary slightly between catalogues, so confirm against the VIN or the removed part before ordering.
The nominal drawing data is a 22 mm bore, a 63.9 mm outer diameter and a 57.9 mm free height. Aftermarket catalogues print different figures for the same OE reference because they measure at different points, for example a height of about 60 mm on some European listings. Match the part against the removed bumper and request a sample where the figures are critical.
Yes, within the normal limits of replacement practice. Micro-cellular polyurethane provides the same progressive cushioning function, holds its shape through repeated compression cycles and resists oil and ageing, and many aftermarket equivalents for this reference are already described as PU. Where a customer prefers original-style rubber behaviour, Bonpora can quote the same geometry in rubber as a custom item.
Trial orders stay small: sample quantities and mixed trial shipments are accepted so buyers can verify fitment first. Production completes within 15 to 30 days depending on volume, ships in neutral export packaging and carries a 1 year warranty. OEM and custom design support is available for buyers who need their own branding or a modified design.
For prices, drawing data and samples for the 96859128 strut bump stop, send the reference, the quantity and the destination port to the Bonpora sales team. Quotations for stock items usually go out within one working day, and this line can be combined with other suspension references in the same shipment.
