G5,G6 Rear Brake Caliper - Left (TRW)

This rear left brake caliper is a TRW single-piston floating caliper with integrated parking brake, designed for Volkswagen models fitted with solid rear brake discs measuring 282mm or 286mm, depending on vehicle specification. It is most commonly used on VW Golf Mk5 and Mk6 models with PR code 1KZ, offering reliable rear braking performance and correct handbrake operation.

With a 38mm piston, this caliper provides smooth, controlled pad application, helping maintain braking stability and even wear on everyday road cars.

Primary Fitment – VW Golf Mk5 & Mk6 (PR Code Specific)

VW Golf V (2003–2009)

PR Code: 1KZ

• Engines: 1.4, 1.6, 2.0 petrol

• Diesels: 1.9 TDI, 2.0 TDI

VW Golf VI (2008–2016)

PR Code: 1KZ

• Engines: 1.2, 1.4, 1.6, 1.8, 2.0, 2.5 petrol

• Diesels: 1.6 TDI, 2.0 TDI

Always check the vehicle data sticker (service book or boot floor) to confirm PR code 1KZ before ordering, as other rear brake setups were also used.

Why This Caliper Is Used on Mk5 & Mk6 Golf

The Mk5/Mk6 platform introduced larger rear discs and an integrated handbrake caliper design. This TRW caliper combines hydraulic braking and mechanical handbrake operation into a single unit, improving packaging, reliability, and braking balance compared to earlier cable-only systems.

Other Compatible Volkswagen Models

This rear left caliper is also fitted to the following models when equipped with PR code 1KZ:

VW Eos (2006–2015)

• Engines: 1.4, 1.6, 2.0 petrol; 2.0 diesel; 3.2 & 3.6 petrol

VW Golf Plus (2004–2014)

• Engines: 1.2, 1.4, 1.6, 2.0 petrol

• Diesels: 1.9 TDI, 1.6 TDI, 2.0 TDI

VW Jetta III (2004–2010)

• Engines: 1.4, 2.0, 2.5 petrol

• Diesels: 2.0 TDI

How the Rear Brake Caliper Works

When braking, hydraulic pressure pushes the 38mm piston outward, clamping the brake pads onto the solid rear disc. The caliper’s integrated parking brake mechanism uses an internal screw and lever system, allowing the handbrake cable to mechanically apply the pads when parked.

Correct adjustment and free movement of the mechanism are essential to ensure proper handbrake performance and prevent uneven pad wear.

RHD Fitment Notes

• Fitting position: Rear axle left

• On right-hand-drive vehicles, this is the passenger side

Recommended Additional Parts

For best results and long-term reliability, we recommend fitting or checking:

• Rear brake pads

• Matching rear brake discs (282mm or 286mm, as applicable)

• Handbrake cables (replace if stretched or seized)

• New caliper carrier bolts (single-use on many models)

Rear brake calipers should always be replaced in axle pairs to maintain balanced braking and handbrake operation.

Key Specifications

• Fitting position: Rear axle left (RHD passenger side)

• Disc type: Solid

• Compatible disc diameters: 282mm / 286mm

• Disc thickness: 12mm

• Caliper type: Single-piston floating caliper

• Parking brake: Integrated

• Piston diameter: 38mm

• Manufacturer type: TRW