MERITOR RB4120 Engine Bearings 849500066471

( Brand: Meritor ), ( Part Type: Bearing Engine ), ( Manufacturer Part Number: RB4120 ), ( UPC: 849500066471 )

Review MERITOR

The Meritor RB4120 is a heavy-duty, single reducer, rear drive axle designed for commercial vehicles and applications requiring high torque and durability. This axle is engineered to deliver superior performance and reliability even under the most demanding conditions.

The RB4120 axle features a robust, forged, one-piece axle shaft, and a high strength, nodular iron axle housing. This design provides exceptional strength and resistance to bending and twisting, ensuring the axle can handle heavy loads and extreme off-road conditions.

The axle is equipped with a Meritor Twin-Trac differential, which utilizes a unique, offset gear design to provide superior traction and torque transfer. This differential also features a high capacity oil capacity for enhanced cooling and longevity.

The RB4120 axle is available in a variety of ratios ranging from 3.30:1 to 5.13:1, allowing operators to choose the best gear ratio for their specific application. The axle also comes with an integral, park brake system that utilizes a cam-actuated, automatic adjusting parking brake shoe design, providing easy and reliable parking and braking capabilities.

The Meritor RB4120 axle is also equipped with a spiral bevel gear design, which provides excellent efficiency, quiet operation, and long gear life. The axle is designed to meet or exceed the requirements of SAE J609 and J611 standards, ensuring it meets the highest industry standards for performance and durability.

In summary, the Meritor RB4120 is a heavy-duty, single reducer, rear drive axle that is engineered for superior performance and reliability in commercial vehicle applications. Its robust design, high strength components, and advanced differential technology provide exceptional torque transfer, traction, and durability, making it an ideal choice for heavy-duty, off-road applications.

The Meritor RB4120 is a heavy-duty axle assembly designed for commercial vehicles. Here are some potential pros and cons that may help you make an informed decision about purchasing this product:

1. High Load Capacity: The Meritor RB4120 axle assembly can support a maximum gross vehicle weight of up to 36,000 lbs, making it suitable for heavy-duty applications.

2. Durability: Meritor is known for manufacturing high-quality components, and the RB4120 axle assembly is no exception. It is built to withstand the rigors of commercial vehicle use.

3. Versatility: The RB4120 can be used in a variety of applications, including refuse, construction, and transportation.

4. Easy Installation: The RB4120 is designed to be easy to install, which can save time and labor costs.

1. Cost: The Meritor RB4120 axle assembly is a premium product, and it comes with a premium price tag.

2. Complexity: Installing the RB4120 axle assembly may require specialized knowledge and tools, which can add to the installation cost.

3. Weight: The RB4120 is a heavy-duty component, and it adds weight to the vehicle. This can increase fuel consumption and reduce payload capacity.

The Meritor RB4120 axle assembly is a high-quality, durable component suitable for heavy-duty commercial vehicle applications. Its load capacity, versatility, and ease of installation make it an attractive option for fleet managers and commercial vehicle operators. However, its cost and complexity may be a disadvantage for some buyers. Ultimately, the decision to purchase the Meritor RB4120 axle assembly depends on the specific needs and budget of the buyer.

If you require a heavy-duty axle assembly for commercial vehicle applications, the Meritor RB4120 is an excellent option. Its high load capacity, durability, and versatility make it a reliable choice for refuse, construction, and transportation applications. However, be prepared for the additional cost and complexity of installing this premium component. If budget is a concern, consider alternative options with similar load capacities but lower price points.

Details:

Engineered using the latest technology to ensure product lasts longer in service. Made of high-quality components for durability, reliability, and performance. Designed specifically for trucks, trailers, and buses. Meritor RB4120: Part Number: Manufacturer.

Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle. Manufactured following strict OE standards to work like the original component.

part #: rb4120 price

• $38.16

specifications engibearing:

• brand: Meritor
• part type: Bearing Engine
• manufacturer part number: RB4120
• upc: 849500066471

offer engibearing:

• best offers: True
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• sold: 0
• started: February 8, 2026

general engibearing:

• Car Truck Parts Accessories > Engines Engine Parts > Engine Bearings
• condition: New

shipping engibearing:

• class: Standard
• service: Standard
• transit: 3-6 Days
• cost: $0.00
• type: Fixed

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• wallet: Apple-pay
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returns engibearing:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

seller engibearing:

• # reviews: 64484
• rating: 99.1%
• city: Los Angeles, California

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