Product Overview

The Valvetronic actuator, OEM number 11377603979, is the eccentric shaft actuator fitted across an unusually wide range of BMW models with the N20, N55, and S55 engines, including the 135i, 135is, 228i, 320i, 328i, 335i, 428i, 435i, 528i, 535i, 640i, 740Li, X1, X3, X4, X5, X6, Z4, M3, and M4, spanning model years 2010-2021. Since this actuator covers such an enormous range of BMW sedans, coupes, SUVs, and performance models, it's a genuinely high-turnover part for anyone stocking BMW valvetrain components.

Worn or failing units typically show up as a rough or unstable idle, reduced engine power, poor fuel economy, or a check engine light with a Valvetronic system fault code. 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

11377599021, A2C5328032080, VTS20

(Confirm against your VIN or chassis code before ordering - this actuator spans an unusually wide range of BMW models and engine variants (N20, N55, S55), so it's worth double-checking the exact chassis and engine before ordering at volume.)

What Is a Valvetronic Actuator?

Function: The Valvetronic actuator controls the position of the eccentric shaft that adjusts intake valve lift, allowing the engine to regulate airflow without relying solely on a traditional throttle plate, which improves both efficiency and throttle response.

Working Principle: This electric actuator sits on or inside the cylinder head and rotates the eccentric shaft to a precise angle commanded by the ECU, continuously varying the intake valve lift based on engine load and speed, and on this third-generation Valvetronic design, the actuator also functions as the position sensor, a function that was previously handled by a separate component.

Importance: Valvetronic is central to how these BMW engines manage airflow and fuel efficiency, so a failing actuator directly affects idle quality, power delivery, and fuel economy, since the ECU can no longer precisely control intake valve lift.

Common Failures & Signs: Internal motor or position sensor wear affecting actuator accuracy. Rough, unstable, or fluctuating idle speed. Reduced engine power, particularly noticeable under load. Check engine light with a Valvetronic system fault code, often accompanied by reduced fuel economy.

Key Features

OEM-standard fitment - matches factory actuator output and mounting configuration for the 11377603979 application.

Precision manufacturing - combined actuator and position sensor design for accurate, responsive valve lift control.

Long service life - built to handle sustained engine heat and vibration exposure.

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

Corrosion resistance - housing construction resists heat and under-hood moisture exposure.

Reliable performance - consistent valve lift control matching factory calibration.

Benefits

Importers - high-turnover part covering an enormous range of BMW models across multiple engine families, simplifying inventory.

Wholesalers - steady demand from several of BMW's highest-volume sedan, SUV, and performance platforms.

Repair Shops - OEM-spec fitment reduces comeback risk on Valvetronic system jobs.

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

End Customers - restored smooth idle, engine power, and fuel efficiency.

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 Valvetronic actuators for BMW 135i, 228i, 320i, 328i, 528i, X1-X6, M3, M4, or Z4 vehicles? Contact GSK Auto for a wholesale quote, catalog, or OEM/private label cooperation.