Description
Product Overview
The ACDelco 89026786 Brake Backing Plate Kit is engineered to provide a robust foundation for drum brake assemblies on a wide range of light‑to‑medium duty vehicles. Designed with precision machining, each plate offers a flat, uniform surface that aligns perfectly with the brake drum, ensuring consistent contact and optimal braking force distribution. The kit includes a single high‑quality backing plate, manufactured to meet or exceed OEM specifications, and is ready for immediate installation upon delivery.
![[Product front view showing all components]](https://www.illusiongo.store/wp-content/uploads/2026/06/957d1d8cbffd44efb3ee8a3d883e886d.jpg)
Crafted from premium machined steel, the backing plate boasts a corrosion‑resistant coating that protects against moisture, road salts, and harsh environmental conditions. This protective layer extends the service life of the component, reducing the likelihood of rust‑related failures and maintaining structural integrity over years of operation. The steel composition also contributes to the plate’s inherent strength, allowing it to absorb and distribute braking stresses without deformation.
The plate measures 9.25 inches in both length and width, with a thickness of 4.12 inches, providing ample surface area for secure mounting. Weighing just 3.82 pounds, it balances durability with manageable handling during installation. The wall‑mount design features pre‑drilled holes that align with standard vehicle mounting points, simplifying the attachment process and ensuring a tight, vibration‑free fit.
Compatibility is a key consideration for this product. The ACDelco backing plate is listed under the automotive replacement categories for drum brake backing plates and power brake systems, making it suitable for many trucks, SUVs, and commercial vehicles. Its part number 89026786 matches the OEM specification, allowing it to serve as a direct replacement for original components without the need for additional modifications.
Installation of the backing plate is straightforward for experienced technicians and competent DIYers alike. Begin by removing the old plate and cleaning the mounting surface to eliminate debris. Align the new plate with the existing bolt pattern, insert the fasteners, and torque them to the manufacturer’s recommended specifications. The design includes clear markings to guide correct orientation, reducing the chance of installation errors.
Once installed, the plate contributes to improved braking performance by providing a stable platform for the brake shoes. The solid steel construction minimizes flex under load, which translates to more consistent brake pedal feel and reduced fade during prolonged use. Drivers will notice a smoother, more reliable braking response, especially under heavy loads or steep descents.
ACDelco subjects each backing plate to rigorous quality testing, including dimensional checks, material hardness verification, and corrosion resistance assessments. These tests ensure that every unit leaving the factory meets strict performance criteria, delivering confidence to both installers and end‑users.
Beyond the product itself, ACDelco offers comprehensive technical support. Customers can access detailed installation manuals, part diagrams, and troubleshooting guides through the company’s online portal. In the event of any issues, a dedicated service team is available to provide prompt assistance, reinforcing the brand’s commitment to customer satisfaction.
Usage
The ACDelco backing plate is ideal for a variety of applications, ranging from light commercial trucks to full‑size SUVs that rely on drum brake systems for rear wheel braking. It excels in environments where durability and resistance to corrosion are paramount, such as coastal regions with salty air, mountainous areas with frequent snow and road salt, and industrial settings where vehicles encounter heavy loads.
Typical installation scenarios include routine brake service, replacement of a failed or worn plate, and upgrades for vehicles that experience higher-than‑average braking demands. The plate’s wall‑mount configuration allows it to be fitted onto existing brake assemblies without extensive modifications, making it a practical choice for fleet maintenance programs and individual vehicle owners alike.
Mechanics will appreciate the plate’s straightforward mounting process, which reduces labor time and minimizes the risk of re‑work. For DIY enthusiasts, the clear labeling and standard bolt pattern simplify the task, enabling a confident installation with basic hand tools.
The product’s design also supports aftermarket performance upgrades. By providing a solid, rust‑free foundation, it enables brake shoe manufacturers to achieve their intended friction characteristics, leading to enhanced stopping power and longer component life.
Why Choose Us
Choosing the ACDelco 89026786 Brake Backing Plate Kit means selecting a component backed by decades of automotive expertise and a reputation for reliability. ACDelco’s extensive research and development resources ensure that each part is engineered to meet the highest standards of performance, safety, and durability.
Our commitment to quality begins at the raw material stage, where we source premium steel that undergoes precise machining to achieve tight tolerances. The subsequent coating process adds a protective barrier against rust and corrosion, extending the service life of the plate even in the most demanding conditions.
Every backing plate is inspected through a multi‑point quality assurance program that includes dimensional verification, surface finish inspection, and functional testing. This rigorous approach guarantees that the product will perform as expected, providing peace of mind to installers and vehicle owners.
In addition to product excellence, ACDelco offers a robust warranty and responsive after‑sales support. Should any concerns arise, our technical team is ready to assist with troubleshooting, parts identification, and guidance on proper maintenance practices.
By partnering with ACDelco, you benefit from a global network of distributors and service centers, ensuring that replacement parts and expert advice are readily available whenever you need them.
Key Features
- Precision‑machined steel delivers a flat, stable surface for consistent brake performance.
- Corrosion‑resistant coating protects against rust, road salts, and harsh weather.
- Wall‑mount design with pre‑drilled holes simplifies installation on most trucks and SUVs.
- OEM‑matched part number 89026786 ensures a direct fit without modifications.
- Comprehensive ACDelco support and warranty provide confidence and peace of mind.
FAQ
What vehicles are compatible with the ACDelco 89026786 backing plate?
The backing plate is designed for a broad range of light‑to‑medium duty trucks and SUVs that use drum brake systems. It matches the OEM specifications for many models, and the part number 89026786 can be cross‑referenced with vehicle fitment guides to confirm compatibility.
Can I install the plate myself, or do I need a professional?
Installation is straightforward for anyone with basic mechanical skills and standard hand tools. The plate includes pre‑drilled mounting holes that align with factory bolt patterns, and the process is detailed in the ACDelco service manual. However, if you are unsure, a qualified technician can complete the installation quickly.
How does the corrosion‑resistant coating improve the plate’s lifespan?
The coating creates a barrier that prevents moisture and road salts from contacting the steel surface. This protection reduces the risk of rust formation, which can compromise structural integrity. As a result, the plate maintains its strength and performance over many years of service.
What warranty does ACDelco provide for this backing plate?
ACDelco offers a limited warranty that covers defects in material and workmanship for a specified period. Details can be found on the product packaging or by contacting ACDelco customer service. The warranty underscores the brand’s confidence in the durability of the component.
Is this backing plate suitable for high‑performance or heavy‑duty applications?
Yes. The machined steel construction and robust mounting design make the plate well‑suited for vehicles that experience higher braking loads, such as commercial trucks, off‑road SUVs, and performance vehicles that rely on drum brakes for rear stopping power.






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