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The OE 96396591 front suspension rubber buffer is the jounce bumper Chevrolet fits to the front MacPherson strut of the Matiz M200 and M250, the model also sold as the Daewoo Matiz II, Chevrolet Spark and Pontiac Matiz G1 depending on market. The buffer slides onto the damper rod inside the front coil spring, under the dust boot, and is squeezed only at the very end of suspension travel so the damper body cannot bottom out against its mount. This page presents Bonpora No. 4110170, a reinforced polyurethane replacement produced in China for wholesale distribution, with the size listing Φ16.3 x Φ48 x 60.5 mm. Below you will find where the buffer sits in the front strut, which vehicles use it, the full specification table, how to source by OEM number, wholesale and custom manufacturing options, fitting notes, and answers to the questions purchasing teams ask most often.
The front suspension of the Matiz M200 and M250 is a MacPherson strut layout: a coil spring wrapped around a telescopic damper, with the spring seat, top mount, bearing and dust boot stacked above it. The rubber buffer, also catalogued as a jounce bumper, bump stop or suspension rubber buffer, sits on the damper rod between the spring seat and the top mount. In normal driving it stays idle and the spring and damper carry the load. When the suspension compresses far enough, for example over a deep pothole, a speed hump taken quickly, or with four passengers and a full boot on a rough road, the strut runs out of usable travel and the buffer is progressively crushed. It absorbs the final part of the stroke, keeps metal surfaces apart, and removes the harsh bang that would otherwise travel straight into the body shell.
Because it stands in the load path, the buffer is a wear item rather than a lifetime component. Rubber buffers harden with age, take a permanent set, split at the shoulder, or crumble away in pieces. Once the material has flattened, the effective travel of the strut is shorter, so the suspension reaches its limit earlier and more road shock is passed into the body and the top mount. Typical symptoms on a high mileage city car are a hollow thud over sharp bumps, a front end that feels noticeably harsher than it did when the vehicle was newer, uneven wear on the top mount rubber, and in bad cases a knocking noise when the car is driven over a dip or a speed table. Because the part is hidden inside the coil spring, it is normally inspected during strut or spring replacement, and workshops treat the buffer and the dust boot as a set to be renewed together.
Chevrolet and Daewoo catalogue the number 96396591 as a rubber buffer for the suspension, listed specifically for the front axle of the Matiz M200 and M250 family. The same reference is listed by European aftermarket suppliers under the category jounce bumper or suspension rubber buffer for the same vehicles. On this axle one buffer is required per side, so a complete front axle job needs two pieces, and the correct matching dust boot and protective cap set is referenced separately as 96535008, with 96535006 and 96535010 appearing in related mounting kits for the same platform.
The reference is easily confused with two neighbouring numbers on the same car that are not interchangeable. The rear axle buffer of the Matiz family is a different part, and the front and rear buffers differ in bore, outer diameter and height. Always confirm the axle position before committing to a purchase order, and where the original marking is worn away identify the part from vehicle data instead of from a photograph alone.
| Parameter | Value |
|---|---|
| Product Name | Strut Bump Stop |
| Country of Origin | China |
| Bonpora Nos | 4110170 |
| OE | 96396591 |
| Fitment | Chevrolet |
| Size | Φ16.3xΦ48x60.5 |
| Material | Polyurethane |
| Warranty | 1 Year |
| Delivery Time | 15-30 Days |
| Packaging | Neutral Export Packaging |
| Custom Service | OEM & Custom Design Support |
The size listing Φ16.3 x Φ48 x 60.5 mm describes a compact, slim buffer: about 16.3 mm at the internal bore that rides on the damper rod, roughly 48 mm at the widest point of the body, and 60.5 mm in overall height. Height and bore are the two dimensions that matter most in service. A buffer that is too short lets the strut run deeper into its travel and bottom out sooner, so shock loads pass into the damper and the top mount. A buffer that is too tall removes usable suspension travel and makes the ride harsh during ordinary driving. Both should be checked against the removed original, together with the bore, before a container is booked.
Polyurethane is specified ahead of plain rubber or soft foam because it holds its shape under repeated impact, resists oil, ozone, road salt and temperature cycling, and does not take a permanent set as quickly. On a small, light car that is often fully loaded and driven on poor urban roads, the front buffer works harder than its size suggests, so material choice has a direct effect on how long the part lasts. For importers and repair chains, a correctly specced polyurethane buffer means fewer returns and steadier repeat demand on the same reference, since the workshop can fit it with confidence that the ride height and travel have not changed.
When the original marking is still legible, ordering by OEM number is the most reliable route. The number appears across catalogues and price lists as 96396591, 96 396 591, or 9639 6591 depending on the formatting the platform uses, and all of these identify one Bonpora reference, 4110170. That lets distributors and repeat buyers reorder a known specification without re-checking drawings on every purchase, and it keeps a mixed multi-market stock simple because one internal code covers the application. For orders that span several vehicle families, the polyurethane bump stops range groups references by system and by vehicle model, which shortens the quotation process.
If the number has worn away, identify the buffer from the vehicle instead. The information that matters is make, model, model year, engine, axle position, and whether the car uses the standard strut or a modified layout. On the Matiz M200 and M250 the front buffer is the same across the 0.8, 1.0 and 1.0 LPG petrol engines, but the rear axle buffer is a different part, so a photograph of the removed item beside a steel rule plus the registration or VIN as a cross check is the safest way to confirm the match. Independent workshops that service several Matiz, Spark and Kalos vehicles can consolidate stock under Bonpora numbers and reorder one code per application.
This buffer is manufactured in China for wholesale distribution. It runs as a catalogue item with existing tooling, so dimensions stay stable between production batches and pricing is structured for carton, pallet and container quantities rather than single piece retail. Typical buyers include independent workshops and repair chains, importers of suspension and rubber components in Europe, the Middle East, Latin America and Africa, distributors serving the compact car aftermarket, and online sellers who need a dependable source for a fast moving reference. The chassis and suspension parts range from the same production site covers the components normally renewed at the same time, such as dust boots, top mounts, coil springs and control arm bushes, so a container can be built around complete front strut service kits rather than single references.
Orders ship in neutral export packaging by default, so goods arrive ready for relabelling under the brand of the distributor. Delivery time is 15 to 30 days depending on order volume and production scheduling, and the warranty period is 1 year. For first time customers, sample quantities can be arranged before a bulk commitment so that bore, height and hardness can be verified on a real vehicle ahead of a production order.
Each production batch is checked for bore, outer diameter, overall height and material hardness. Visual inspection covers flash, voids and surface defects that could develop into early cracking in service. Dimensional records are kept per batch, so a repeat order matches the approved sample instead of drifting over time. That batch level traceability supports the 1 year warranty offered for export markets and allows a distributor to answer technical questions from workshops with confidence.
Beyond the catalogue part, the same production line supports OEM and custom design work. Available options include tailored polyurethane hardness, modified bore, outer diameter or height, coloured material for brand recognition, branded packaging, and private label marking. Importers building a front strut kit usually combine several references in one shipment to reduce freight cost per unit, while workshops that service heavily loaded or modified vehicles sometimes ask for a firmer compound matched to a particular damper and spring combination. For a custom project, send a drawing or a physical sample together with the expected annual volume. Tooling and sampling lead times are quoted separately from mass production, and a first article sample is normally supplied for fitment confirmation before the production run begins.
Replace the front buffers in pairs and inspect the dust boot, the top mount and its bearing, and the damper for oil misting at the same time. The front strut has to be removed and the coil spring compressed with a proper spring compressor, so the work fits naturally into a front damper or spring replacement. Clean the damper rod before sliding the new buffer into place, and check that it seats fully against its shoulder with the boot correctly located. Torque the fasteners to the figures given by the manufacturer for the specific model year, and have the front wheel alignment checked after reassembly, because the geometry is disturbed when the strut is released.
A correctly fitted polyurethane buffer should sit square on the rod with no twisting or pinching. If it does not seat evenly it will wear on one side and can generate noise within a short mileage. On vehicles that regularly carry a full load or operate on poor road surfaces, the buffers should be inspected at every damper service, since sustained heavy use accelerates the ageing of any elastomer.
It is listed for the Chevrolet Matiz M200 and M250, the model family also marketed as the Daewoo Matiz II, Chevrolet Spark and Pontiac Matiz G1 in different markets, covering the 0.8, 1.0 and 1.0 LPG petrol engines from the 2005 model year onward. It is the front axle buffer, one piece per side. Confirm the application by model, model year, engine and axle position, or send the VIN or registration for a precise match before placing a bulk order.
No. The front and rear buffers of the Matiz family are different parts with different bores, outer diameters and heights, and they are not interchangeable. This page covers the front axle buffer 96396591. If you are building a complete set for a workshop programme, list the front and rear references separately and match each one against the removed original, because fitting a rear buffer to the front strut changes the available travel and will not seat correctly on the damper rod.
Typical signs are a hollow thud or clunk from the front over sharp bumps, a front end that feels harsher than when the vehicle was newer, and a knocking noise when driving over dips and speed tables. Because the buffer sits inside the coil spring under the dust boot it is usually inspected when a strut is removed. Visible flattening, cracking at the shoulder, crumbling material, or a buffer that has come away from the damper rod all indicate that replacement is due, and the dust boot should be renewed at the same time if it is split or hardened.
Yes. OEM and custom design support is available, including adjusted polyurethane hardness, modified bore, outer diameter or height, coloured material, and private label packaging. Delivery time is typically 15 to 30 days depending on quantity, packaging is neutral export packaging with branded options on request, and the warranty period is 1 year. Send a drawing or a sample together with the target annual volume to receive a quotation and a sampling schedule.
Send the OEM number 96396591, the Bonpora number 4110170, the quantity and the destination port, and the sales team will confirm specification, packing and delivery schedule. Buyers comparing several sources can review the full auto parts line, which covers suspension, steering and rubber components from the same factory under one catalogue.
