Product Overview

The parking brake actuator, OEM number A1729060300, is the rear left electric parking brake actuator fitted across an unusually wide range of Mercedes-Benz models, including the A-Class, B-Class (including B250 Electric Drive), CLA, CLA250, GLA, GLA250, GLA45 AMG, SLK250, SLK300, SLK350, SLK55 AMG, SL400, SL450, SLC300, SL63 AMG, and SL65 AMG, spanning model years 2012-2019. Since this actuator covers so many current-generation Mercedes compact and sports car models, it's a genuinely high-turnover part for anyone stocking Mercedes brake system components.

Worn or failing units typically show up as a parking brake warning light on the dashboard, the parking brake failing to engage or release properly, or an unusual grinding or clicking noise when the parking brake is activated. GSK Auto manufactures this actuator to OEM specification at our Ningbo, China facility, with every unit tested before packing. We supply at wholesale volume with low MOQ and support private label packaging, with our team available to confirm fitment before shipping.

Replacement OEM Numbers

Cross-Reference OEM Number

A1729060200, 1729060200, 1729060300

(Confirm against your VIN or chassis code before ordering - this is specifically the rear left actuator, and left/right actuators are not interchangeable, so it's worth confirming side needs with your customer before shipping.)

What Is a Parking Brake Actuator?

Function: The electric parking brake actuator engages and releases the rear parking brake mechanism electronically, replacing the traditional mechanical handbrake lever or foot pedal found on older vehicles.

Working Principle: When the driver activates the electric parking brake switch, the actuator's motor drives a mechanism that applies or releases the parking brake caliper, with the vehicle's control module managing the process and providing feedback on parking brake status.

Importance: Since the electric parking brake system replaces the mechanical handbrake entirely on these models, a failing actuator can leave the parking brake unable to engage or release properly, which affects both convenience and the ability to safely park on an incline.

Common Failures & Signs: Internal motor or gear mechanism wear affecting actuator function. Parking brake warning light illuminated on the dashboard. Parking brake failing to engage or release when activated. Grinding or clicking noise when the parking brake is engaged or released.

Key Features

OEM-standard fitment - matches factory actuator dimensions and connector configuration for the A1729060300 application.

Precision manufacturing - motor and gear mechanism built for reliable, repeated engagement cycles.

Long service life - plastic housing construction resists moisture and road debris exposure.

Excellent fitment - direct bolt-in replacement, no modification required.

Corrosion resistance - housing construction resists moisture and road-salt exposure.

Reliable performance - consistent parking brake engagement matching factory specification.

Benefits

Importers - high-turnover part covering an unusually wide range of current Mercedes models, simplifying inventory.

Wholesalers - steady demand from several of Mercedes' popular compact and sports car platforms.

Repair Shops - OEM-spec fitment reduces comeback risk on parking brake jobs.

Distributors - private label packaging available for building a branded catalog.

End Customers - restored reliable parking brake operation.

Packaging & Shipping

Standard export packaging, sized for an actuator component. Customized packaging available for distributor branding. OEM-style and private label printing on request. Container loading handled directly, with mixed-SKU consolidation for smaller orders. Worldwide shipping to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

Why Choose GSK Auto

GSK Auto manufactures factory-direct, keeping pricing tied to production cost. This actuator is built to OEM specification and tested before packing. We support low MOQ, private label packaging, and worldwide shipping, with our technical team available to confirm fitment before you order.

Call to Action

Sourcing parking brake actuators for Mercedes A-Class, B-Class, CLA, GLA, SLK, or SL vehicles? Contact GSK Auto for a wholesale quote, catalog, or OEM/private label cooperation.