Description

Overview

The Kenworth Big 6 Torque Rod Rubber Bush from Sampa is an aftermarket replacement for compatible Kenworth Big 6 and KW6 suspension systems with 4″ wide mounting arrangements. It provides a rubber-cushioned connection within the suspension torque rod assembly, allowing controlled movement while helping absorb vibration and suspension forces.

This bush features a 105.486mm maximum outside diameter, 111.125mm mounting centre length and 16.739mm fixing holes. The rubber construction distinguishes it from polyurethane alternatives, while the mounting dimensions are essential when selecting a replacement for the existing torque rod.

Features

• Rubber construction for cushioning suspension movement and vibration.
• 105.486mm maximum outside diameter for matching the torque rod housing.
• 111.125mm mounting centre length with 16.739mm fixing holes.
• Designed for compatible Kenworth Big 6 and KW6 4″ wide suspension arrangements.

Specifications and Materials

• Manufacturer: Sampa
• Component: Torque rod suspension bush
• Product type: Rubber axle and differential suspension bushing
• Application: Kenworth Big 6 and KW6 suspension
• Suspension mounting width: 4″ (101.6mm) application
• Bushing material: Rubber
• Maximum outside diameter: 105.486mm
• Overall height: 146.050mm
• Minimum mounting centre length: 111.125mm
• Minimum mounting hole diameter: 16.739mm
• Nominal fixing hole size: 5/8″ class
• Quantity supplied: 1 suspension bush

Part number: 501.486.

For torque rod construction and bushing material information, refer to the Sampa V-Rod and Torque Rod technical brochure

Compatibility and Fitment

This rubber suspension bush suits compatible Kenworth Big 6 and KW6 torque rod applications using the 4″ wide suspension arrangement. It also supports selected Meritor axle and suspension applications requiring the same bushing configuration.

Before installation, compare the existing bush outside diameter, mounting centre length and fixing hole diameter. Particular attention should be given to the pin arrangement and mounting hardware, as similar torque rod bushes are available with different hole sizes and overall dimensions.

The following cross-reference numbers identify verified equivalent or replacement parts for this exact application. Confirm the selection-critical fitment details against the part being replaced before fitting.

K066-259, TRB6801, 321325, E-9323, A-2297-K-1052, A-2297-V-4806, R309323, A-2297-L-1052

Related Parts

A polyurethane alternative is available within the same suspension bush family for applications requiring a different bushing material.

Compliance and Safety

Support the vehicle securely before removing the torque rod or suspension bush. Inspect the surrounding torque rod housing, mounting pins, brackets and fasteners for wear, deformation or damage.

Use suitable bushing removal and installation equipment to avoid damaging the surrounding suspension components. During reassembly, follow the applicable Kenworth or Meritor tightening procedures and inspect the mounting arrangement for correct alignment and security.

Trailer Applications

This bush is used in compatible Kenworth Big 6 and KW6 rear suspension systems fitted to heavy commercial trucks and prime movers. Related Meritor applications include selected trailer axle and suspension assemblies using the same torque rod bushing dimensions.

Replacement may be required where the original rubber has deteriorated, the internal mounting arrangement has developed excessive movement or the torque rod connection has become worn.

Cross-reference and Suitability

This part cross-references to the following verified equivalent or replacement part numbers:

Why Choose ICS Trailers

Kenworth Big 6 suspension bushes are available with different mounting hole sizes, pin arrangements and bushing materials. Selecting the correct replacement requires checking the complete torque rod mounting configuration rather than relying on the suspension model alone.

ICS Trailers can assist with comparing the existing bush dimensions and identifying suitable rubber or polyurethane replacement options for your suspension repair.

• Match the 105.486mm outside diameter, 111.125mm mounting centres and 16.739mm fixing holes against the original component.
• Send through the old bush markings, mounting measurements or suspension photos if you need assistance selecting the correct replacement.

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