# CMX K8C-103990 Rear Disc Brake Kit for 2002-2005 Ford Explorer, Mercury Mountaineer

### Performance Overview

Transit Auto offers the most comprehensive and highest-quality replacement kits on the market. Thanks to our cutting-edge AI, in-house product team, and proprietary fitment data, we are able to build and deliver the most accurate kits on the market. All our kits include the highest-quality parts on the market, sourced directly by Transit and its sub-brands. Backed by over 50 years of experience and with in-house quality assurance, every customer CMX K8C-103990 is a vehicle-specific disc brake kit designed for compatible applications for 2002-2005 Ford, Mercury Explorer, Mountaineer.

### Key Features

-   Exclusive CeramiX™ High-Density Ceramic compound provides optimal braking performance (Stable Friction, High Temperature Stability, Extended Lifetime
-   Exclusive MetalliX™ Low Resin Semi-Metallic compound provides unmatched braking performance (abrasive friction, high temperature tolerance, quicker compound
-   Engineered with carbon-enhanced XCast™ (G3000) iron castings to achieve an optimal wear resistance, tensile strength and steel hardness providing unmatched
-   Rubberized Multi-Layer Stainless Steel Shim reduces noise, vibration, and harshness for complete quietness
-   Engineered with High Carbon SteelRX™ alloy (Pressure Resistant, Thermal Conductive) and dipped in an Anti-Rust Black Paint to improve durability

### Vehicle Fitment

**Fitment Position:** Rear

**Fitment Summary:** 2002-2005 Ford, Mercury Explorer, Mountaineer

**Position:** Rear

-   2004-2005 Ford Explorer — Position: Rear; Note: With Phenolic Piston
-   2003 Ford Explorer — Position: Rear; Fitment Precision: Limited/XLS/Eddie Bauer/XLT
-   2002 Ford Explorer — Position: Rear; Fitment Precision: Limited/Postal/XLS/Eddie Bauer/XLT
-   2002-2005 Mercury Mountaineer — Position: Rear; Note: With 184mm x 32mm Size Drum

### FAQ

**Will this fit my vehicle?**  
Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase.

**What part number is this?**  
The listed part number is K8C-103990.

**Is this product designed for direct replacement?**  
Yes. This product is intended to match compatible vehicle applications listed in the fitment section.

**Should I confirm fitment before ordering?**  
Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering.

### Common Searches

-   Disc Brake Kit for Explorer
-   Disc Brake Kit for Ford Explorer
-   K8C-103990 fitment
-   CMX Disc Brake Kit
-   Rear Disc Brake Kit
-   2002 Ford Explorer Disc Brake Kit

### Vehicle Fitment Table

Year

Make

Model

Position

Fitment Precision

Note

2004

Ford

Explorer

Rear

With Phenolic Piston

2005

Ford

Explorer

Rear

With Phenolic Piston

2003

Ford

Explorer

Rear

Limited/XLS/Eddie Bauer/XLT

2002

Ford

Explorer

Rear

Limited/Postal/XLS/Eddie Bauer/XLT

2002

Mercury

Mountaineer

Rear

With 184mm x 32mm Size Drum

2003

Mercury

Mountaineer

Rear

With 184mm x 32mm Size Drum

2004

Mercury

Mountaineer

Rear

With 184mm x 32mm Size Drum

2005

Mercury

Mountaineer

Rear

With 184mm x 32mm Size Drum

## Details

- **Price:** 155.82 CAD
- **Vendor:** CMX
- **Type:** Disc Brake Kit
- **Tags:** 2002 Ford Explorer, 2002 Mercury Mountaineer, 2003 Ford Explorer, 2003 Mercury Mountaineer, 2004 Ford Explorer, 2004 Mercury Mountaineer, 2005 Ford Explorer, 2005 Mercury Mountaineer, Automotive Parts, CMX, CMX K8C-103990, Daily Driver, Direct Replacement, Disc Brake Kit, Disc Rotors and Ceramic Brake Pads Kit, K8C-103990, Rear, Vehicle Fitment

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 155.82 CAD | In stock |

## Images

- CMX K8C-103990 Disc Brake Kit for 2002-2005 Ford Explorer, Mercury Mountaineer - Rear product image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/cmx-k8c-103990-disc-brake-kit-for-2002-2005-ford-explorer-mercury-mountaineer-rear-k8c-103990)
> Updated: 2026-06-03