Description

Overview

Knorr-Bremse SK7 22.5in Brake Caliper Right-Hand is a rationalised tangential air disc brake caliper for heavy trailer brake systems. It suits 430mm tangential disc applications (SB4309T style) where a right-hand caliper is specified, helping workshops return a trailer to service with a like-for-like replacement.

Features

• Right-hand SK7 rationalised tangential caliper assembly
• 0 degree configuration to suit common tangential axle mounting geometry
• No wear sensor provision specified for this variant
• Supplied as a kit with key installation hardware (pins, caps, retainers, covers and grease)

Specifications and Materials

• Caliper family: Knorr-Bremse SK7 (rationalised), tangential mount
• Rotor size: 430mm (tangential format)
• Minimum wheel size: 22.5in
• Orientation: Right-hand
• Angle: 0 degree
• Wear sensor: None

Part number: FB4405RAT.

For broader compliance context around heavy vehicle braking systems, refer to Australian Design Rule 35.

Compatibility and Fitment

This caliper is listed to suit BPW SK/SM series SB4309T tangential 430mm disc applications (commonly referenced up to 05/2003 in catalogues) and is also listed for SAF SK RS 9022 K and KI/11222K configurations (where the same tangential 430mm format is used).

Important: Right-hand and left-hand can swap depending on whether the suspension is underslung or overslung, so confirm suspension type before ordering. BPW Transpec specifically notes that on underslung suspensions the right-hand caliper is used on the left-hand side of the axle, and the left-hand caliper is used on the right-hand side. (Source)

This cross-reference listing means this part is a suitable replacement for the part numbers and applications shown. Some changes in installation may be required.

K012634, MXC9103074, K001909, SK7011, 3080006000, 5362706210

Compliance and Safety

Brake work is safety-critical. A qualified technician should handle installation, inspection, and bedding-in. Follow axle and caliper service instructions for torque settings, lubrication points, and functional checks. Confirm correct pad retention, free sliding movement, and leak-free air operation before returning the trailer to service.

Trailer Applications

This right-hand caliper variant commonly appears on disc-braked semitrailers, B-double sets, dollies, and other heavy combinations running 22.5in wheels with tangential 430mm rotors on BPW SK/SM or SAF SK axle families. Fleets typically replace like-for-like to keep brake balance consistent across an axle.

Cross-reference and Suitability

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

Finally, if you are matching an existing caliper, confirm side, suspension type (underslung or overslung), and mounting format before ordering.

Why Choose ICS Trailers

ICS Trailers can help you confirm the correct side and application before you commit to a caliper replacement. We can also help match pads, rotors, and related foundation brake parts so you complete the job properly and reduce downtime.

Browse Foundation Brakes at ICS Trailers
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