Meritor MD2014X-586

The Meritor MD2014X-586 is a heavy-duty tandem rear-drive axle differential engineered for the most extreme torque demands in Class 8 vocational trucks. Featuring a 5.86:1 gear ratio, this differential delivers exceptional low-speed power and pulling force, making it an ideal choice for off-road, severe-grade, and heavy-payload applications such as logging, refuse, mining, and construction hauling.

As part of Meritor’s trusted MD2014X series, the MD2014X-586 is built with durable hypoid gearing and a modular, top-load carrier, offering both rugged performance and serviceability. This high-ratio differential maximizes traction and torque delivery in slow-speed, high-resistance environments where engine power must be efficiently transferred to the ground.

Key Features

• Model: MD2014X-586
• Series: Meritor MD2014X Tandem Rear Drive Axle
• Axle Rating: 40,000 lbs (20,000 lbs per axle)
• Gear Ratio: 5.86:1
• Differential Type: Standard open (non-locking)
• Gear Design: Hypoid gears for high torque capacity and durability
• Carrier Design: Top-load, modular carrier for simplified service and installation

Applications & Benefits

• Extreme Torque Ratio: The 5.86:1 ratio delivers unmatched torque and traction for demanding terrain
• Built for Vocational Use: Perfect for trucks in refuse, logging, off-road, and heavy-construction environments
• Durable Under Pressure: Engineered for slow-speed, full-load operation in rugged conditions
• Service-Friendly: Modular carrier design allows for easy maintenance, rebuilds, and part replacement
• OEM Fitment: Built to meet or exceed original equipment specifications for direct-fit replacement

At General Truck Parts, we stock both new and remanufactured Meritor MD2014X-586 differentials, all tested and inspected to OEM standards. Our reman units are carefully rebuilt with quality components, dyno-tested, and backed by a warranty for dependable long-term performance.

Need to confirm your gear ratio, axle specs, or fitment details? Our expert team is ready to assist with VIN lookups, part number cross-references, and fast nationwide shipping. Request a Quote or call today to check availability, pricing, and shipping options.

Technical Specifications:

• Axle Model: MD2014X-586
• Configuration: Tandem rear-drive axle
• Gross Axle Weight Rating (GAWR): 40,000 lbs
• Gear Ratio: 5.86:1
• Differential Type: Open (non-locking)
• Input Spline Count: Typically 39 or 41 splines (confirm per vehicle spec)
• Lubrication: Oil bath system (SAE 85W-140 recommended)
• Brake Compatibility: Fits both S-cam drum and air disc brakes
• Suspension Compatibility: Compatible with air ride, leaf spring, and vocational suspensions
• OEM Applications: Used in Freightliner, International, Kenworth, Mack, Peterbilt, Volvo, and other Class 8 vocational vehicles

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