Monroe 66956 Suspension Shock Absorber - Rear

Overview

Monroe Magnum Shock Absorber 66956 is a gas-charged suspension shock absorber for heavy-duty applications. It is built to replace worn units and restore controlled damping, helping reduce vibration and improve ride stability.

Compatible with select International TerraStar, International 9300, International 9400, and International 1654 rear applications, this shock absorber is identified by part number 66956.

Key Features

• Gas-charged design for quicker response and steadier ride control.
• Metal dust shield helps protect the shock from road debris.
• Extended hydraulic lockout adds control at full extension.
• Loop bushing and sleeve upper and lower mounts for direct replacement applications.
• Monroe Magnum Shock Absorber line for class 3-6 vehicle use.

Detailed Description

The Monroe Magnum Shock Absorber 66956 is engineered for rear suspension service on select International medium-duty and heavy-duty vehicles. Its gas-charged construction supports more consistent damping, while the extended hydraulic lockout helps manage suspension movement when the shock reaches full extension. The metal dust shield adds another layer of protection in demanding operating conditions.

This part fits 2011-2018 International TerraStar, rear; 1989-1999 International 9300, rear; 1990-1999 International 9400, rear; and 1980-1989 International 1654, rear. It cross-references Monroe Shocks & Struts (e.g., 345621, 70690) for the same application. The 66956 part number is also useful when verifying replacement against OE references and interchange data.

For buyers searching for a rear shock absorber for International TerraStar, International 9300, or International 9400 applications, 66956 provides a direct service replacement path for the listed fitments.

What It Helps Address

• Excessive vibration from worn rear shocks.
• Reduced ride control under load.
• Suspension instability caused by fatigued damping components.
• Premature tire wear linked to poor shock performance.
• Increased downtime from failing suspension parts.

Installation Notes and Tips

Verify the rear position, mounting style, and OE cross-reference before installation. Confirm compressed length, extended length, and travel length against the existing shock to ensure proper suspension geometry. Check that the vehicle uses the listed rear application and review the OE part number notes in the fitment data before ordering.

Quality Assurance

Monroe Magnum Shock Absorber products are positioned for demanding commercial-duty service and are designed to deliver stable damping performance in heavy-use environments. Part number 66956 is supported by detailed interchange and OE reference data for fitment verification.