Front Suspension Strut Bump Stop 84153144 for Buick Enclave, Cadillac XT5 XT6, Chevrolet Blazer Traverse, GMC Acadia - Polyurethane Jounce Bumper Wholesale

The OE 84153144 is the front suspension strut bumper of the current General Motors crossover family. GM Genuine Parts catalogues name it Front Suspension Strut Bumper and fit it to six models: the Buick Enclave, the Cadillac XT5 and XT6, the Chevrolet Blazer and Traverse, and the GMC Acadia. One piece sits on each front damper rod, two per vehicle, and the same reference covers front wheel drive and all wheel drive versions. It replaces the earlier numbers 23103754 and 84032113, so quotations that carry either older reference resolve to this article. This page presents Bonpora No. 4110129, a polyurethane replacement manufactured in China for wholesale export, nominal size Φ23 x Φ68.4 x 98 mm.

What the 84153144 Front Strut Bumper Does

All six models share the same front suspension concept: one MacPherson type strut per side, with the coil spring and the damper in a single assembly. The 84153144 bumper sits on the damper rod inside the spring, above the dust boot and below the top mount. As the wheel travels upward over a pothole or during a fully loaded descent, the stop is progressively crushed and absorbs the last part of the compression stroke. It cushions the contact between the piston rod top, the spring seat and the body structure, prevents a harsh metal to metal knock, and protects the damper seal and internal valves from overload peaks.

Why It Is a Regular Service Item

The stop takes part in every full compression event, so it ages with mileage. Polyurethane hardens with time and heat, takes a permanent set under load and can crumble at the edges. A flattened stop shortens the working travel of the front suspension, and the symptoms follow: a hollow knock from the front over sharp bumps, a ride that turns harsh when the vehicle carries passengers and luggage, and faster wear on the dampers and top mounts. Workshops inspect the bumper whenever a front strut, spring or dust boot is removed, and GM catalogues carry it as a routine service reference. Replace in pairs so both sides keep the same working height.

Fitment Guide: Six GM Crossovers, 2017 to 2025

GM dealer catalogues list one shared reference for the complete front wheel drive crossover range built on the shared C1XX platform family. The table below summarises the applications; build date, trim and market can shift coverage, so the number on the removed original or a VIN check remains the final word.

Boundaries and Common Order Mistakes

Three boundaries keep this reference clean. First, the axle: 84153144 belongs to the front suspension, and the rear suspension of the same vehicles takes separate references, so a rear axle request needs its own number. Second, axle position data in some European aftermarket catalogues is inconsistent; the Febest equivalent CHD-1N2F is titled front shock absorber jounce bumper by its manufacturer, while several European platforms carry it under a rear axle heading, yet every GM Genuine Parts dealer source names the part Front Suspension Strut Bumper. When sources disagree, order by the OE number on the removed part. Third, supersession: 23103754 and 84032113 are earlier design numbers for the same application, both superseded by 84153144, and a quotation under any of the three numbers describes one article.

Specifications of the 84153144 Strut Bump Stop

Reading the Dimensions

The ACDelco specification sheet lists an inside diameter of 1.02 inches, about 26 mm, and an outside diameter of 2.51 inches, about 64 mm. The Bonpora drawing reads Φ23 x Φ68.4 x 98 mm at its own reference points. Differences of this scale between catalogues are normal for elastomer parts: a stop measured free in the hand sits taller and wider than a stop compressed on the rod, and each brand measures at different stations. Weight lands near 0.27 kg per piece, which helps freight calculation for container planning. Match the new stop against the removed original before releasing a full batch, and record bore, outer diameter and height in the quotation.

Polyurethane vs Rubber for the Jounce Bumper

The OE part and the main aftermarket equivalents are produced in microcellular polyurethane or conventional rubber. The material decides how the stop behaves across years of compression cycles, oil contact and weather.

Rubber remains serviceable in mild climates and standard duty. Polyurethane keeps its working height longer under repeated compression, which decides how soon a loaded Enclave or Traverse starts to knock at the front axle.

Which Material for Which Market

North American distributors usually restock polyurethane as the primary replacement line because it matches the OE material family. Price driven tenders in some regions still call for rubber versions. Bonpora produces the polyurethane line as standard and can quote rubber on request against the same drawing.

Sourcing by OEM Number 84153144

Ordering by OEM number is the most reliable route when the marking on the removed part is still readable. The number appears as 84153144, and the superseded forms 84032113 and 23103754 describe the same application; all of them identify Bonpora reference 4110129. For orders that span the complete GM crossover range, the polyurethane bump stops range groups references by system and model family and shortens the quotation process.

Cross Reference Checklist

• OE 84153144 readable on the removed part: order Bonpora 4110129.
• Older numbers 84032113 or 23103754 quoted by the customer: same application, superseded design, supply against 84153144.
• Febest CHD-1N2F quoted: aftermarket equivalent covering Enclave, XT5, Traverse and Acadia applications.
• Front axle confirmed: one piece per side, two per vehicle, same part for front wheel drive and all wheel drive.
• Rear axle request: separate reference, not interchangeable with this front part.
• Number unreadable: identify by make, model, model year and axle position, confirmed with the VIN.

Wholesale Supply from a Chinese Auto Parts Factory

This bumper is manufactured in China for wholesale distribution as a catalogue item with existing tooling, priced for carton, pallet and container quantities. Typical buyers include GM specialists, suspension and rubber parts importers, and distributors serving fleet operators across North America, the Middle East, Southeast Asia, Latin America and Africa. Because six current models share one reference, stock turnover is faster than for single model parts, and one pallet position serves Enclave, XT5, XT6, Blazer, Traverse and Acadia repairs at the same time. Orders ship in neutral export packaging by default, delivery takes 15 to 30 days depending on volume, the warranty period is 1 year, and samples can be arranged to verify bore, height and hardness before a bulk commitment.

Quality Control Points

Each production batch is checked for bore, outer diameter, overall height and material hardness, with visual inspection for flash, voids and surface defects. Dimensional records are kept per batch, so repeat orders match the approved sample. That traceability supports the 1 year warranty.

Custom and OEM Manufacturing Support

Beyond the catalogue part, the same production line supports OEM and custom design work: adjusted hardness, modified bore, outer diameter or height, coloured material, branded packaging and private label marking. For a custom project, send a drawing or a sample together with the expected annual volume; a first article sample confirms the fitment before series production begins.

Custom Project Workflow

The workflow is simple: drawing review, material and hardness proposal, first article sample, vehicle fitment check on the sample, then batch production with per batch inspection records. Most custom projects move from drawing to approved sample within a few weeks.

Installation and Replacement Notes

Replace the front bump stops in pairs and inspect the dust boots, the top mounts and the front dampers at the same visit. The work happens at the strut assembly: the coil spring is compressed with a proper spring compressor, the old stop is released from the damper rod, the rod surface is cleaned, and the new stop is pushed fully home against its shoulder before the boot is located. A light coating of grease on the mating surfaces eases assembly. A stop seated unevenly wears on one side and can pass noise into the body, so check the seating before the strut goes back into the knuckle.

FAQ

Which vehicles does the 84153144 strut bump stop fit?

The front axle of six GM crossovers: Buick Enclave from 2018, Cadillac XT5 from 2017, Cadillac XT6 from 2020, Chevrolet Blazer from 2019, Chevrolet Traverse from 2018 including the 2024 Traverse Limited, and GMC Acadia from 2017, all through the 2025 model year, in front wheel drive and all wheel drive versions. One piece per side, two per vehicle. A VIN check or the number on the removed part confirms the order.

Are 84153144, 84032113 and 23103754 the same part?

Yes for sourcing purposes. 84032113 and 23103754 are earlier design references for the same front strut bumper, and GM superseded both with 84153144. Suppliers may quote under any of the three numbers; the current service number is 84153144, and Bonpora supplies it as 4110129.

Why do some catalogues list this number as a rear axle buffer?

A few European aftermarket listings carry conflicting axle position data for the Febest CHD-1N2F equivalent. Every GM Genuine Parts dealer source names 84153144 Front Suspension Strut Bumper and places it in the front suspension catalogue diagram, which is the authoritative definition. When sources disagree on position, order by the OE number on the removed part and confirm the axle before shipment.

Can this bump stop be made in a custom size, and what are the trade terms?

Yes. OEM and custom design support covers adjusted hardness, modified dimensions, coloured material and private label packaging. Delivery time is typically 15 to 30 days depending on quantity, packaging is neutral export with branded options on request, and the warranty period is 1 year. Send a drawing or a sample with the target annual volume to receive a quotation.

Request a Quote

Send the OEM number 84153144, the Bonpora number 4110129, the quantity and the destination port, and the sales team will confirm specification, packing and delivery schedule. Buyers building a wider suspension programme can review the chassis and suspension parts range, and the full auto parts line covers rubber, steering and chassis components from the same factory.