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The Meritor MFLEX4: A Smarter Approach to Air Disc Brake Maintenance

One pad. four calipers. two axles. meet the meritor mflex4.

MFLEX4 Pad

Managing air disc brake inventory isn’t always simple. Different caliper platforms often require different replacement pads, creating additional complexity for fleets, service centers, and parts departments.

The Meritor MFLEX4 was developed to address that challenge with a single air disc brake pad designed to fit four of the most common Class 8 caliper applications. Covering up to 70% of the Class 8 truck and trailer market, the MFLEX4 offers a practical way to simplify brake maintenance without sacrificing performance.

One Pad, Four Caliper Applications

One of the biggest advantages of the MFLEX4 is its broad compatibility. The pad is designed to fit:

By covering four of the most common air disc brake caliper platforms with a single solution, the MFLEX4 helps reduce the number of parts fleets and distributors need to stock while simplifying product selection for technicians and purchasers alike. 

A Simple Fitment Check Right on the Box

One of the most unique features of the MFLEX4 is built directly into the packaging.

Every MFLEX4 box includes a true-to-size pad outline printed on the package. If the pad being removed fits within the printed graphic, the MFLEX4 is designed to serve as a compatible replacement.

This provides technicians with a quick visual reference when identifying replacement options, helping reduce guesswork and simplify the decision-making process at the service bay.

For busy shops, that means less time spent verifying applications and more time getting vehicles back on the road.

MFLEX4 Box with Pad Graphic

Replace Multiple Part Numbers with a Single Solution

Rather than stocking multiple brake pad kits for common air disc brake applications, maintenance teams can consolidate inventory around a single MFLEX4 solution. The following cross reference chart highlights several commonly used kits that can be replaced with the MFLEX4.

MFLEX4 Fits

Locate your current brake pad manufacturer and part number in the chart below. If it appears in the corresponding application column, it can be replaced with the Meritor MFLEX4 pad kit for that brake system.

BRAND Bendix ADB22X WABCO MAXXUS WABCO PAN22 Hendrickson MAX22T
Abex ADB1369 - - -
A-Line ALP1369-KZ3 - ALP9007-KZ3 -
Automann 141D1369SD 141D2061SD 141D1777SD 141D1777FS
Bendix K129276
K297277
AMPW2061BA
-
AMPW1777BA
-
AMPWT1777BA
-
Bremskeri 8040016 - 8040025 -
Dayton 23AD1369
DTSP1369
26CV9342
29AD9342
29AD1777
-
26CV1777H
29AD1777H
Hendrickson S-29152-2 - S-32676-1 -
Marathon DSHP1369
DSTP1369AG
-
-
9007-D1777
-
-
-
Meritor MMD1369AD MMD2061AG MMD1777AG MMD1777M22TAG
WABCO -
-
6403229342
6403229322
12999796
6402259222
6042229272
-

Simplifying Inventory Management

For many maintenance operations, inventory complexity can be just as challenging as the repair itself. Multiple caliper platforms often mean additional SKUs, increased shelf space requirements, and more opportunities for ordering mistakes.

The MFLEX4 helps address these challenges by offering:

  • Fewer SKUs to manage
  • Simplified ordering processes
  • Reduced inventory carrying costs
  • Easier technician identification
  • More efficient use of storage space
  • Broader application coverage with a single solution


For fleets focused on reducing downtime and streamlining operations, fewer parts to stock can translate into meaningful savings in both time and administrative effort.

One Kit Covers Two Axles

The MFLEX4 delivers another practical advantage that maintenance teams can appreciate immediately: one kit covers two axles.

Combined with its four-caliper fitment coverage, a single kit can help streamline maintenance planning while reducing the number of kits required for service.

Instead of managing multiple application-specific kits, maintenance departments can simplify ordering, stocking, and installation with a single solution designed to cover a broader range of vehicles.

For busy service departments, that simplicity can help improve efficiency and keep trucks moving through the shop and back on the road faster.

Designed for Performance and Efficiency

The MFLEX4 offers more than inventory advantages. It also includes Meritor Positive Pad Retraction (PPR) springs, which are designed to help reduce brake drag when the brakes are released.

By minimizing drag, the system can help:

  • Improve fuel efficiency
  • Extend pad life
  • Extend rotor life
  • Reduce overall cost per mile

The MFLEX4 is available in both linehaul and severe-service friction formulations, giving fleets the flexibility to select the performance level that best matches their operating environment.

MFLEX4 PPR Springs

Meritor’s patented Positive Pad Retraction (PPR) technology helps maintain greater pad-to-rotor clearance after brake release, reducing unwanted drag and contributing to extended brake component life.

Technician-Friendly Installation

Maintenance efficiency doesn’t stop with fitment. Each MFLEX4 kit includes the hardware required for installation, helping technicians complete brake service without the need to source additional components separately.

The all-in-one approach can help reduce service time, simplify parts management, and improve consistency across maintenance operations.

Why Fleets Are Paying Attention

It’s not often that a new aftermarket product generates significant interest, but the MFLEX4 addresses a challenge many fleets face every day: managing brake inventory across multiple platforms.

The combination of:

  • One pad design
  • Four caliper applications
  • Two-axle coverage per kit
  • True-size fitment guide on every box
  • Included installation hardware
  • Reduced inventory complexity

makes the MFLEX4 a compelling option for fleets, distributors, and service providers looking for ways to simplify operations without compromising quality.

When it comes to commercial vehicle maintenance, simplicity matters.

The Meritor MFLEX4 helps reduce complexity by combining broad fitment coverage, inventory reduction, technician-friendly installation, and a unique package-based fitment guide into a single solution. For fleets looking to streamline brake maintenance while maintaining reliable performance, it’s easy to see why the MFLEX4 is generating attention throughout the industry.

Learn More About the Current Promotion

Bergey’s is currently featuring the Meritor MFLEX4 as part of its latest parts promotion.

Whether you’re looking to reduce brake pad inventory, simplify maintenance planning, or learn more about MFLEX4 compatibility, our parts team is ready to help.