Meritor MD2014X-488

The Meritor MD2014X-488 is a heavy-duty tandem rear-drive axle differential built to deliver maximum torque and traction in the most extreme work conditions. With a 4.88:1 gear ratio, this differential is designed specifically for off-road and severe-service Class 8 trucks that demand consistent low-speed power, pulling strength, and rugged reliability in environments like construction sites, logging roads, mines, and refuse operations.

As part of Meritor’s trusted MD2014X differential series, the MD2014X-488 features durable hypoid gearing, a modular top-load carrier for ease of service, and compatibility with a wide range of suspensions and brake types. Its high-torque ratio makes it ideal for trucks that regularly operate under heavy payloads and on uneven or steep terrain where fuel efficiency takes a backseat to raw power and traction.

Key Features

• Model: MD2014X-488
• Series: Meritor MD2014X Tandem Rear Drive Axle
• Axle Rating: 40,000 lbs (20,000 lbs per axle)
• Gear Ratio: 4.88:1
• Differential Type: Open (non-locking)
• Gear Type: Hypoid gears for strength and quiet operation
• Carrier Design: Modular top-load carrier for quick servicing

Applications & Benefits

• Extreme Torque Performance: The 4.88 gear ratio provides exceptional pulling power for heavy loads and steep inclines
• Severe-Duty Ready: Ideal for dump trucks, refuse trucks, cement mixers, forestry, and construction vehicles
• Long-Term Durability: Built to handle full-load stress in harsh, off-road, or low-speed environments
• Serviceable Design: Top-load modular carrier allows for faster maintenance and reduced downtime
• OEM-Ready: Manufactured to fit seamlessly into many Class 8 trucks and vocational chassis

At General Truck Parts, we carry both new and remanufactured Meritor MD2014X-488 differentials, built to OEM specifications and backed by our reputation for quality. Our reman units undergo thorough inspection, precision rebuilding, and dynamic testing to ensure dependable performance and extended service life.

Need help confirming fitment, axle specs, or gear ratio compatibility? Our expert team is here to assist with VIN matching, part cross-referencing, and shipping anywhere in the U.S. Request a Quote or call today to check availability, pricing, and shipping options.

Technical Specifications:

• Axle Model: MD2014X-488
• Configuration: Tandem rear-drive axle
• Gross Axle Weight Rating (GAWR): 40,000 lbs
• Gear Ratio: 4.88:1
• Differential Type: Open (non-locking)
• Input Spline Count: Typically 39 or 41 splines (confirm per vehicle spec)
• Lubrication: Oil bath system (85W-140 gear oil recommended)
• Brake Compatibility: Compatible with 16.5″ S-cam drum and air disc brakes
• Suspension Compatibility: Works with air ride, leaf spring, and vocational suspensions
• OEM Applications: Installed in trucks by Freightliner, Peterbilt, Kenworth, International, Mack, Volvo, and more

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