Description

Overview

Camshaft seal 1.5 inch cam service helps keep grease around the brake camshaft and helps block dirt and water. This camshaft seal sits at the end of the S cam tube and forms a barrier between the bush and the brake hardware. As a result, it supports consistent brake adjustment and smoother camshaft rotation on heavy trailers.

Features

This camshaft seal 1.5 inch cam size suits common 1.5in trailer brake camshafts and hardware stacks. The 38mm inside diameter matches standard camshaft dimensions so the seal locates accurately on the shaft. The 48mm outside diameter suits typical S cam housings and spider faces, and the 6mm thickness fits in narrow seal lands without upsetting end float.

Specifications and Materials

Part number: FB3144.
The camshaft seal uses a 38mm inside diameter and a 48mm outside diameter, and reference data confirms these sizes. The 6mm thickness allows the seal to sit square against the housing face while still maintaining clearance for the camshaft bush. For general guidance on S cam brake camshaft seals and related components, see this manufacturer technical guide

Compatibility and Fitment

This cross-reference listing means this part suits the replacement of the part numbers and applications shown. Some changes in installation may be required. E-1416, 79903, WT3122

Compliance and Safety

Correct camshaft seal selection supports reliable foundation brake performance on heavy trailers. Inspect the S cam tube, bush and seal land whenever you remove the brake drum, then replace worn seals in pairs on the same axle so both brakes retain similar protection against contaminants. Confirm the seal sits fully home on the housing and does not pinch the bush when you torque hardware. In addition, follow the trailer manufacturer guidelines and any relevant heavy vehicle maintenance standards that apply in your region.

Trailer Applications

Workshops use this camshaft seal 1.5 inch cam size on many heavy trailer drum brake systems with 38mm camshafts. It suits S cam style brakes where a compact seal sits between the cam bush and the brake spider or backing plate. As a result, the seal helps protect the camshaft bush, brake rollers and anchor pins from dirt and moisture. It also suits general freight, tanker and tipper trailers that run 1.5in brake camshafts and matching seal lands.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Heavy trailer foundation brake parts such as camshafts, bushes and seals should always be checked together so the complete brake assembly works as intended.

Why Choose ICS Trailers

ICS Trailers focuses on practical foundation brake parts that match common heavy trailer hardware and service methods. Our team selects parts that align with real workshop practices and known interchange references so you can service brakes with confidence. We also support trade customers with technical detail, responsive supply and wide trailer parts coverage. Browse Foundation Brakes parts at ICS Trailers in our Foundation Brakes category