Valeo 438266 Starter Motor

Valeo Starter for Mercedes-Benz Applications

The Valeo 438266 starter is a 12-volt OE-style replacement built for select Mercedes-Benz vehicles. It uses a clockwise rotation, aluminum housing, and a 10-tooth drive to match the original starting system requirements on covered applications.

Valeo OE Starter Line

Valeo Starter products are part of the Valeo OE family, reflecting the brand’s long history in electrical systems and original equipment supply. This starter is a 100% new unit, which helps avoid the wear concerns associated with remanufactured components.

Key Features

• Part number: 438266
• 12-volt starter for select Mercedes-Benz models
• 1.4 kW power rating
• Clockwise starter rotation
• Aluminum housing for OE-style fitment
• 2-hole, 2-threaded mounting configuration
• 10-tooth drive
• Technical number: TS14E6

Detailed Description

Valeo 438266 is engineered for Mercedes-Benz starting systems that specify a 1.4 kW, 12V starter with clockwise rotation. It is listed for applications including the Mercedes-Benz SL450, GLE400, GLE43 AMG, GLS450, GLE350, GL450, SL400, ML350, SLK350, C350, E350, and R350 across model years from 2012 through 2020. This part number 438266 is a direct-fit style solution for vehicles where Valeo is the OE supplier, including select start/stop and non-start/stop configurations noted in the fitment data.

This part cross-references WAI 19278N for the same application.

What It Helps Address

• Slow or weak engine cranking
• No-start condition caused by starter motor failure
• Intermittent starting after key or push-button activation
• Grinding or improper starter engagement
• Replacement needs for worn OE starter units

Installation Notes and Tips

Confirm the vehicle’s year, model, and start/stop configuration before ordering. Verify the 2-hole, 2-threaded mounting layout, 12V electrical specification, clockwise rotation, and 10-tooth drive against the original starter. For Mercedes-Benz SL450, GLE400, GLE43 AMG, and related applications, match the OE part number or technical number TS14E6 when possible to ensure correct fitment.

Quality Assurance

Valeo is a long-standing original equipment supplier in automotive electrical systems, and this starter is produced as a new unit rather than a remanufactured assembly. That OE-focused design supports consistent starting performance on covered Mercedes-Benz applications.