Description

Overview

Knorr-Bremse SK7 22.5in Brake Caliper Left-Hand is a rationalised tangential caliper for heavy trailer air disc brake systems. It suits BPW SK/SM series SB4309T tangential 430mm disc applications when you need the left-hand side, helping restore predictable braking with a like-for-like caliper fit. :contentReference[oaicite:0]{index=0}

Features

• Left-hand SK7 rationalised tangential caliper for 430mm rotor systems
• 0 degree configuration to suit common tangential axle mount geometry
• Listed for 22.5in wheel applications
• Designed for heavy-duty trailer ADB service replacement

Specifications and Materials

• Type: SK7 rationalised tangential caliper
• Angle: 0 degree
• Wheel size: 22.5in
• Part number: FB4406RAT

Compatibility and Fitment

This caliper is listed to suit BPW SK/SM series SB4309T tangential 430mm disc applications (up to 05/2003 in BPW literature). It is also commonly listed against SAF SK RS 9022 K and KI/11222K applications in aftermarket catalogues, so confirm your axle family, rotor size, and side orientation before ordering. :contentReference[oaicite:1]{index=1}

Important: BPW notes that replacement calipers are supplied without the caliper carrier, and the carrier must be ordered separately if required.

Cross-reference and Suitability

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

Additionally, BPW literature lists SB4309T calipers under the BPW numbers below (handy if you’re matching from an axle/parts book):

:contentReference[oaicite:3]{index=3}

Compliance and Safety

Brake work needs the right process and tools. Use a qualified technician, confirm left-hand orientation before fitting, and inspect slide/guide movement and dust boots. After installation, verify pad compatibility, torque fasteners to the axle/brake manufacturer’s procedure, and perform a controlled brake test before returning the trailer to service.

Trailer Applications

Commonly used on linehaul and general freight trailers running BPW SK/SM SB4309T 430mm tangential air disc brakes. It may also appear on SAF disc-brake axle families using the same SK7 tangential format, but always confirm rotor diameter, mount type, and side.

Why Choose ICS Trailers

ICS Trailers supports heavy trailer brake repairs with practical fitment help, so you can confirm axle family, rotor format, and what else you need (pads, hardware, carriers) before you order.
Browse Foundation Brakes at ICS Trailers
::contentReference[oaicite:4]{index=4}