A Guide to the 2001-2007 Acura MDX Disc Brake Hardware Kit
Eliminate brake noise and ensure even pad wear by replacing this often-overlooked component on your MDX.
- Always replace the disc brake hardware kit when changing brake pads to prevent noise and uneven wear.
- Seized caliper slide pins are a common issue; ensure they are cleaned and lubricated with silicone-based grease.
- The 2006 and 2007 MDX models use different brake parts; verify your model year before purchasing.
- Choose aftermarket kits with stainless steel clips for better longevity, especially in rust-prone climates.
Signs of Worn Brake Hardware on Your MDX
When brake hardware wears out, it can cause problems that are often mistaken for bad brake pads or rotors. The metal clips and springs lose their tension over time, leading to distinct symptoms. Ignoring them can result in noisy brakes and cause you to replace your pads and rotors sooner than necessary.
- Rattling or Clunking Noises: A common sign of worn hardware is a metallic rattle or a 'clunk' sound when you apply the brakes at low speeds. This happens because the brake pads are no longer held tightly in the caliper bracket.
- Squealing or Scraping: While often a sign of thin pads, constant squealing can also be caused by hardware that isn't allowing the pads to retract properly from the rotor.
- Uneven Brake Pad Wear: If you inspect your brake pads and find that the inner pad is much more worn than the outer pad (or vice-versa), it's a strong indicator of a seized or sticky caliper slide pin. Servicing these pins is a key part of a hardware replacement job.
- Brakes Feel Spongy or Drag: Sticking caliper components can prevent the brakes from fully releasing, making it feel like the vehicle is struggling to accelerate.
Pro Tip: Always Replace on a Brake Job
It is highly recommended to install a new disc brake hardware kit every time you replace your brake pads. The old clips lose their spring tension after tens of thousands of miles and heat cycles. Rust and debris can also build up under the old clips, preventing the new pads from moving freely, which leads to noise and uneven wear.
Choosing the Right Aftermarket Hardware Kit
For the 2001-2007 Acura MDX, the original OEM hardware is reliable, but high-quality aftermarket kits often provide better materials at a lower cost. The key is to choose a complete kit from a reputable brand.
Look for kits that include:
- Stainless Steel Abutment Clips: These are the most important part. Stainless steel offers superior corrosion resistance compared to basic plated steel, which is critical in areas that use road salt.
- New Anti-Rattle Springs/Clips: These hold the pads steady and prevent vibration.
- Caliper Pin Boots: If your old rubber boots are torn or brittle, they must be replaced to protect the newly lubricated slide pins from dirt and water.
Brand Quality Tiers:
- Good (Value-Oriented): Brands like Dorman and Carlson offer affordable kits that meet basic requirements. They are a significant improvement over reusing old, worn hardware.
- Better (Enhanced Quality): Centric and Dynamic Friction are well-regarded for providing quality components that often include features like coated hardware for extra protection. Centric is a popular choice in DIY forums.
- Best (Premium Performance): Raybestos (especially their Element3 line) is known for engineering high-quality, durable hardware designed to match or exceed OEM standards. Beck Arnley also focuses on providing parts that match the original form, fit, and function.
Generation Split: 2006 vs. 2007
The 2006 Acura MDX was the last year of the first generation, while the 2007 model was the first year of the completely redesigned second generation. The front and rear brake systems are different. Always confirm your vehicle's year before ordering to ensure you get the correct hardware kit.
Known Issues for 2001-2007 Acura MDX Brakes
While generally reliable, this generation MDX has a few known brake-related issues:
- Seized Caliper Slide Pins: This is the most common problem related to brake hardware service. The pins that allow the caliper to 'float' can seize due to old, dried-out grease or corrosion. This causes rapid and uneven pad wear. It is essential to clean and re-lubricate these pins with a high-temperature silicone-based brake grease during every brake job.
- VSA System Recall (2005-2006 models): NHTSA issued recall 13V-092 for some 2005-2006 MDX models where the Vehicle Stability Assist (VSA) system could malfunction and apply the brakes unexpectedly. While not a mechanical hardware issue, it is a critical safety recall for owners of these years to be aware of.
| Quality Tier | Estimated Price |
|---|---|
| Value | $6.00 - $15.00 |
| Mid-Range | $15.00 - $25.00 |
| Premium | $25.00 - $40.00 |
Frequently Asked Questions (FAQ)
Can I reuse my old brake hardware?
It is strongly discouraged. Old clips lose tension from heat and stress, and reusing them can lead to brake noise, vibration, and premature pad wear. For the low cost of a new kit, it is always best to replace the hardware.
What is included in a typical disc brake hardware kit?
A standard kit for the MDX will include the metal abutment clips (pad locating clips) that fit into the caliper bracket and often new anti-rattle springs. More comprehensive kits may also include new rubber boots for the caliper slide pins.
Is the front hardware kit the same as the rear?
No. The front and rear brake calipers and pads on the Acura MDX are different sizes, so they require different hardware kits. You must order the specific kit for the axle you are servicing.
What kind of grease should I use on the hardware?
Use a high-temperature, silicone-based brake lubricant for the caliper slide pins. A thin layer can also be applied to the back of the brake pads and where the abutment clips contact the caliper bracket to prevent rust and ensure smooth movement. Do not use petroleum-based grease, as it can damage the rubber boots.
Helpful Videos
Technical Specifications
OEM Part Numbers: 45022-S3V-A01 (Front Pad Kit, 2001-2006) 43022-S3V-A12 (Rear Pad Kit, 2001-2006) 45022-STX-A00 (Front Pad Kit, 2007) 43022-STX-A01 (Rear Pad Kit, 2007)
Kits typically include abutment clips and anti-rattle springs. Front and rear kits are sold separately and are not interchangeable. The 2001-2006 (first generation) and 2007 (second generation) models use different hardware.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Acura MDX: