Meritor MD2014X-342

The Meritor MD2014X-342 is a high-performance tandem rear-drive axle differential engineered for heavy-duty Class 8 trucks in regional, vocational, and long-haul applications. Featuring a 3.42 gear ratio, this differential provides an optimal balance between torque and fuel efficiency, making it ideal for fleets operating across varying terrains and load conditions.

As part of the widely trusted Meritor MD2014X series, the MD2014X-342 is designed with durability, modularity, and ease of service in mind. Its hypoid gearing and top-load carrier offer quiet operation, strong power delivery, and simplified maintenance—making it a smart, long-lasting choice for commercial truck operators.

Key Features

• Model: MD2014X-342
• Series: Meritor MD2014X – Tandem Rear Drive Axle
• Axle Rating: 40,000 lbs (20,000 lbs per axle)
• Application: Linehaul, regional haul, vocational trucking
• Differential Type: Standard open differential
• Gear Design: Hypoid for strength and quiet operation
• Carrier Design: Modular top-load for easy maintenance

Benefits & Applications

• Balanced Gear Ratio (3.42): Offers excellent drivability, strong torque, and highway fuel efficiency
• Durable Under Load: Built for long-haul and vocational applications with high torque demands
• Serviceable Design: Modular carrier simplifies repairs and reduces downtime
• OEM Ready: Direct-fit replacement for many factory axle configurations
• Reliable Performance: Trusted by fleets for consistent, long-lasting operation under varied conditions

At General Truck Parts, we carry both new and remanufactured Meritor MD2014X-342 differentials, rebuilt to strict OEM standards using quality-tested components. Every reman unit is inspected, dyno-tested, and ready for install with a full warranty.

Need help confirming compatibility or gear ratio? Our drivetrain experts are here to assist with VIN lookups, cross-references, and fast, reliable quotes. Request a Quote or contact us today to check stock and pricing.

Technical Specifications:

• Axle Model: MD2014X-342
• Configuration: Tandem rear-drive axle
• Gross Axle Weight Rating (GAWR): 40,000 lbs
• Gear Ratio: 3.42:1
• Differential Style: Open (non-locking)
• Input Spline Count: Typically 39 or 41 splines (verify per application)
• Lubrication: Oil-lubricated system (85W-140 gear oil recommended)
• Brake Compatibility: Compatible with 16.5″ S-cam drum brakes and air disc brakes
• Suspension Compatibility: Works with air ride, leaf spring, and vocational suspensions
• OEM Applications: Common in Freightliner, Peterbilt, Kenworth, Mack, Volvo, International, and other Class 8 trucks

Call now to order!

800-621-3914

REQUEST A QUOTE