Description

Overview

General purpose cast hub cap covers and protects the outer trailer hub assembly while retaining wheel-end lubricant and helping keep dirt and moisture away from the bearings. This six-hole version uses a 140mm mounting PCD and a compact 53mm depth for broad trailer axle servicing.

Features

• Cast construction with a six-hole bolt-on mounting pattern
• 140mm pitch circle diameter across the mounting holes
• 116/127mm internal opening with a 158mm outside diameter
• 53mm cap depth for compact wheel-end clearance

Specifications and Materials

This hub cap measures 158mm across the outside, with a 116/127mm internal diameter and 53mm depth. The six mounting holes sit on a 140mm PCD. Match the gasket and fasteners to the wheel-end assembly during installation.

Part number: AP4026C.

Refer to the official axle maintenance bulletin for wheel-end inspection and hub cap installation guidance

Compatibility and Fitment

Confirm the six-hole pattern, 140mm PCD, hub opening and available depth before ordering. The general purpose cast hub cap suits many trailer axle wheel ends, but a cap with a different PCD, bore or mounting depth will not seal correctly. Compare the removed cap and hub flange directly rather than relying on axle appearance alone.

Related Parts

Check the related service part below against the trailer setup before ordering.

Compliance and Safety

Clean the hub flange and inspect the sealing face before fitting. Replace a damaged or compressed gasket, then tighten all six hub cap bolts progressively and evenly to the axle manufacturer’s specification. After installation, check the wheel end for lubricant leakage and confirm the cap does not contact nearby wheel or brake components.

Trailer Applications

Trailer workshops fit this style during wheel-end repairs on general freight trailers, semi-trailers and other heavy trailer axles using a matching six-hole hub flange. It suits grease or oil wheel-end service only where the cap dimensions, gasket arrangement and lubricant system match the existing hub.

Why Choose ICS Trailers

Hub caps can look similar while using different bolt circles, centre openings and depths. ICS Trailers can help compare the 140mm PCD, 116/127mm opening, 158mm outside diameter and six-hole pattern against your removed part. Send through a clear photo and measurements when the axle identity is uncertain. Matching the cap and gasket correctly supports a sealed wheel end during bearing, hub and axle servicing.

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