Description

Buy O/S Rear Caliper With Motor – 3C0 615 404 G in the UK – Genuine Volkswagen Parts in Stock

Product Overview

The offside (O/S) rear brake caliper assembly complete with an integrated Electronic Parking Brake (EPB) servo motor—identified by the official factory engineering part number 3C0 615 404 G—is a safety-critical hydraulic and electromechanical braking component located on the right-hand side of the rear axle (the driver’s side on UK right-hand drive models). This genuine Volkswagen component combines a precision-machined hydraulic single-piston fluid caliper with a high-torque electric servo actuator designed to manage both standard road braking and stationary parking vehicle retention functions.

As an authentic OEM (Original Equipment Manufacturer) factory component, this caliper assembly is calibrated to interact perfectly with your vehicle’s anti-lock braking system (ABS), Electronic Stability Program (ESP), and dashboard handbrake switch logic. Whether you are an independent garage replacing a seized brake piston to pass an annual MOT inspection, a fleet manager restoring vehicle safety assets, or a DIY enthusiast replacing a malfunctioning rear brake cluster, fitting an authentic factory assembly guarantees a vibration-free fit, correct mechanical clearance, and maximum stopping safety on UK roads.

Compatibility & Fitment

Exact vehicle fitment is critical when replacing electromechanical braking components to avoid electronic actuator synchronization faults, caliper clearance issues, or hydraulic fluid leaks. This specific part number is precision-engineered for specific mid-2000s and early-2010s premium saloons and estate platforms built within the Volkswagen Group family.

• OEM Part Number Reference: 3C0 615 404 G (Also written as 3C0615404G or 3C0 615 404G)

• Placement on Vehicle: Rear Axle, Right-Hand Side (Offside / Driver Side UK)

• Brake System Type: Coordinated TRW Lucas Hydraulic / Electromechanical

• Brake Disc Specification: Tailored for standard solid or ventilated rear brake disc profiles

Compatible Volkswagen Models:

• Passat (B6): Saloon and Variant/Estate models (Platform Typ 3C, typically spanning production years 2005–2011)

• Passat CC / CC: Sleek four-door coupé models (spanning 2008–2012 configurations)

• Sharan (MK2): Multi-Purpose Vehicle (MPV) platforms utilizing matching electronic axle calipers (Select early models 2010–2015)

Important Fitment Check: Volkswagen platforms within these production years utilized either 6-torx or 12-spline internal actuator drive shafts connecting the electric motor to the inner caliper piston mechanism. To ensure absolute compatibility with your vehicle’s specific wiring loom harness connector and internal gear drive setup, always check your vehicle identification number (VIN) or UK registration plate against the part number 3C0 615 404 G prior to finalizing your order.

How It Works

The electromechanical rear brake caliper serves a dual engineering purpose, managing standard braking deceleration alongside electronic vehicle stationary parking retention.

It manages two vital daily workflows:

1. Hydraulic Foot Braking: When you press the footbrake pedal while driving, hydraulic brake fluid travels through the flexible brake hoses into the caliper cylinder. This fluid pressure forces the internal piston outward, pressing your rear brake pads evenly against the spinning brake disc to slow down the vehicle.

2. Electromechanical Handbrake (EPB): When you pull the electronic handbrake switch on the dashboard, the engine control module sends a 12V electrical current directly to the integrated 3C0 615 404 G servo motor. The motor turns a multi-stage gear transmission that drives a high-torque spindle mechanism inside the caliper. This spindle mechanically forces the piston forward against the brake pads, locking the rear wheels in place without needing any hydraulic pressure or mechanical cables.

Electronic brake calipers operate in incredibly harsh underbody environments, making them highly vulnerable to damage from winter road salt spray, flying gravel chips, and intense thermal heat cycles. Common indicators that your unit requires replacement include a seized internal hydraulic piston that causes the brakes to drag and overheat, a cracked electric motor housing that allows water ingress and shorts out the electronics, a flashing handbrake warning light on the dashboard, or a loud grinding screeching noise whenever the electronic parking brake is engaged.

Performance Benefits

• Predictable, Short Stopping Distances: Premium hydraulic bore tolerances ensure sharp, progressive braking feedback and balanced deceleration across the rear axle.

• Rock-Solid Parking Security: The factory-calibrated electromechanical servo motor applies the exact required mechanical clamping force to hold the vehicle securely on steep inclines.

• Zero Electronic Fault Codes: Features internal electrical resistance values that match your vehicle’s ECU precisely, preventing dashboard parking brake warnings.

• Corrosion-Resistant Surface: Heavy-duty anti-corrosion coating prevents surface rust formation and stops slider pins from seizing prematurely.

• Flawless Mechanical Fitment: Cast to original factory layout specifications to slip over your existing brake pads and carrier brackets with zero binding or rubbing.

Build Quality & Engineering

Volkswagen OEM-grade braking components are built to handle tough underbody environments that low-cost aftermarket alternatives cannot endure. The caliper body is cast from a high-tensile nodular graphite iron alloy that provides maximum structural rigidity under extreme hydraulic pressures, preventing caliper body flexing or cracking under heavy panic-braking loads.

The integrated EPB motor casing is ultrasonic-sealed and molded from a reinforced polyamide compound that resists stone impacts, chemical degreasers, and extreme under-car thermal shocks. The internal planetary gear assembly uses hardened steel gears pre-lubricated with a long-life synthetic grease, ensuring quiet operation and smooth power delivery throughout the vehicle’s lifespan.

Installation & Maintenance

Safety Warning: Replacing an electromechanical rear brake caliper requires specialized diagnostic computer tools to manipulate the electronic servo parking motor safely. Attempting to force the caliper piston back mechanically without electronic command will permanently shatter the internal gear spindle.

1. Connect a compatible diagnostic scan tool to the vehicle’s OBD-II port, select the braking module, and activate the “Brake Pad Replacement Mode” to electronically retract the inner parking brake motor spindle.

2. Safely raise the rear of the vehicle, remove the right rear wheel, and clip the flexible rubber brake hose using a specialized line clamp to minimize fluid loss.

3. Disconnect the electrical wiring harness plug from the rear of the EPB caliper motor casing.

4. Unscrew the hydraulic brake fluid line banjo bolt from the caliper body and carefully plug the line to protect it from dust or dirt contamination.

5. Loosen the caliper guide pin bolts, slide the worn caliper body off the carrier bracket, and remove the old brake pads for inspection.

6. Mount your fresh 3C0 615 404 G caliper assembly over the brake pads onto the carrier, and torque the guide pin bolts to full factory specification.

7. Reattach the hydraulic fluid line using new copper sealing washers, plug the electrical wiring harness firmly back into the motor socket, and bleed the rear brake circuit thoroughly to eliminate trapped air bubbles.

8. Use your diagnostic tool to exit the maintenance mode, performing the necessary electronic calibration sequence to reset the brake pad air-gap tolerances. Check the operation of the dashboard parking brake switch before conducting a road test.

Durability & Storage

Our warehouse maintains these heavy structural components in dry, dust-free, climate-controlled environments to protect the hydraulic seals from premature dry-rot and shield the electrical terminals from atmospheric oxidation. Shipped in heavy-duty cardboard boxes wrapped in thick molded foam suspension packaging, your caliper unit arrives clean, dry, unblemished, and ready to bolt straight onto your vehicle.

Trust & Authenticity

Because electronic parking brakes act as your secondary emergency stopping mechanism, choosing unbranded copycat calipers often leads to internal gear stripping, electrical communication failures, or leaking piston seals that put your vehicle’s safety at risk.

At Volkswagen Parts UK, we sell only genuine, original equipment vehicle components. Sourcing an authentic 3C0 615 404 G guarantees a factory-level fit, standard electrical routing safety, completely transparent pricing, and swift trackable shipping across the United Kingdom.

Why Choose Volkswagen Parts UK for 3C0 615 404 G

• 100% Genuine Factory Spares: Verified OEM components built exactly to your vehicle’s factory blueprint.

• Perfect ECU Synchronization: Eradicates annoying warning lights, rapid diagnostic fault logging, and parking brake calculation errors.

• Competitive UK Pricing: Main dealer component quality at competitive prices for motorists and trade mechanics.

• High Stock Availability: Maintained in high volumes across multiple VW platforms to ensure rapid fulfillment.

• Secure and Encrypted Checkout: Fully compliant payment gateways safeguard your personal and payment details.

Fast Delivery Across the UK

A seized caliper or broken parking brake motor can leave your car stuck in place or completely unsafe for road use. We offer rapid, fully trackable nationwide shipping throughout England, Scotland, Wales, and Northern Ireland to get your replacement parts delivered safely and quickly.

We offer reliable courier delivery directly to homes, businesses, and workshops in major UK towns and cities, including:

• London

• Birmingham

• Manchester

• Liverpool

• Leeds

• Glasgow

• Edinburgh

• Bristol

• Sheffield

• Leicester

• Nottingham

• Newcastle

• Cardiff

• Belfast

• Southampton

Expect real-time dispatch alerts and live tracking links provided straight to your email inbox for complete transparency from our door to yours.

Genuine Volkswagen Parts for UK Drivers

Choosing authentic original equipment parts is the best method to ensure your vehicle’s safety parameters, driving comfort, and resale value remain completely intact. Genuine door trim pieces maintain exact dimensional stability, passing comprehensive MOT vehicle safety inspections without question and avoiding any degradation of advanced driver safety networks. Protect your vehicle investment by choosing replacement parts engineered specifically for demanding UK motoring conditions.

FAQ Section

Q: Is this a genuine Volkswagen part? A: Yes. This is a 100% brand-new, authentic OEM Volkswagen factory component. It features official factory stampings, internal clip layout guides, and matches the structural specifications used during vehicle assembly.

Q: Does this caliper assembly include the electronic parking brake motor? A: Yes. This part number represents the complete, pre-assembled package containing both the hydraulic rear brake caliper body and the factory-fitted electromechanical EPB servo motor actuator.

Q: Can I wind the caliper piston back by hand using a standard tool? A: No. Attempting to force the piston back using manual wind-back tools without electronically retracting the motor spindle via an OBD-II diagnostic tool will break the internal mechanical gears, permanently ruining the assembly and voiding your warranty.

Q: Do you ship across the UK? A: Yes. We provide fast nationwide shipping options across England, Scotland, Wales, and Northern Ireland via our trusted courier partners.

Q: What if I order the wrong part? A: We offer a straightforward returns process for uninstalled components kept in their original, undamaged packaging. Simply contact our customer service team, and we will gladly help you handle the return or exchange.