Product Overview

The steering rack belt, OEM number 7806040673, is the electric power steering rack and pinion gear belt fitted across a wide range of Mercedes-Benz models, including the ML-Class/GLE (W166), GL-Class/GLS (X166), S-Class and S-Class Coupe (W222, C217, X222), E-Class (W212, S212, C207, C218, X218), GLK-Class (X204), and the V-Class/Vito (W447). This is a toothed gear belt inside the electric power steering rack itself, not an external accessory belt, and its breakage is one of the more common causes of sudden power steering loss on these platforms.

Worn or failing belts typically show up as a loss of power steering assist, a grinding or clicking noise from the steering rack, or a dashboard warning light related to the power steering system. GSK Auto manufactures this belt 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

1664604200, 1664604300, 1664603000

(Confirm against your VIN or chassis code before ordering - this belt spans a very wide range of Mercedes platforms and model years, so it's worth double-checking the exact chassis code before ordering at volume.)

What Is a Steering Rack Belt?

Function: The steering rack belt is a toothed gear belt inside the electric power steering rack that transfers rotational force from the electric assist motor to the rack's pinion gear, providing power assist to the steering system.

Working Principle: The electric motor drives a small pulley connected to the belt, which wraps around the pinion gear housing and transfers rotational assist directly to the steering rack, reducing the effort needed at the steering wheel.

Importance: Because this belt sits inside a sealed electric power steering assembly rather than being externally visible, its condition is often overlooked until it fails, at which point the vehicle can suddenly lose power steering assist.

Common Failures & Signs: Belt wear or tooth stripping causing a sudden loss of power steering assist. Grinding, clicking, or rattling noise from the steering rack area. Dashboard warning light related to the power steering system. Steering that becomes noticeably heavier, sometimes intermittently before full failure.

Key Features

OEM-standard fitment - matches factory belt length, width, and tooth profile for the 7806040673 application.

Precision manufacturing - slanted-tooth belt profile reduces noise and improves engagement.

Long service life - HNBR material construction resists heat and wear under sustained use.

Excellent fitment - direct replacement for the internal steering rack belt, no modification required.

Corrosion resistance - rubber compound resists degradation from heat cycling.

Reliable performance - consistent power assist transfer matching factory calibration.

Benefits

Importers - one part number covers an unusually wide range of Mercedes models and chassis codes, simplifying inventory.

Wholesalers - steady demand from a common failure point across multiple popular Mercedes platforms.

Repair Shops - OEM-spec fitment reduces comeback risk on steering rack repair jobs.

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

End Customers - restored power steering assist without replacing the entire rack.

Packaging & Shipping

Standard export packaging, sized for a belt 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.

Frequently Asked Questions

• What does this steering rack belt do?

It transfers rotational force from the electric power steering motor to the rack's pinion gear, providing steering assist.

• Which vehicles use OEM 7806040673?

A wide range of Mercedes-Benz models including ML-Class/GLE (W166), GL-Class/GLS (X166), S-Class (W222, C217), E-Class (W212, S212, C207, C218), GLK-Class (X204), and V-Class/Vito (W447) - confirm exact chassis code before ordering.

• Can GSK Auto supply OEM-standard parts?

Yes, this belt is manufactured to match OEM specification for fitment and performance.

• What's the MOQ for wholesale orders?

MOQ varies by order type - contact us directly for current wholesale tiers.

• Do you export worldwide?

Yes, we ship to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

• Can you customize packaging?

Yes, OEM-style and private label printing are available.

• How do I know if my steering rack belt needs replacing?

Common signs include sudden loss of power steering assist, grinding or clicking noise from the rack, and power steering warning lights.

Why Choose GSK Auto

GSK Auto manufactures factory-direct, keeping pricing tied to production cost. This belt 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 steering rack belts for Mercedes M, GLE, GL, GLS, S, E, GLK-Class, or V-Class vehicles? Contact GSK Auto for a wholesale quote, catalog, or OEM/private label cooperation.