Peterbilt Window Regulator R216010R HLK2538

The R21-6010R is an electric (power) window regulator with a cable-driven mechanism, designed for the right-hand (passenger) side. It is a Paccar OEM part used in several Peterbilt truck models.

Key Specifications

Part Number: R21-6010R (Right-Hand)

Left-Hand Equivalent: R21-6010

Mechanism: Electric with a durable cable system

Motor: Often sold as a complete assembly including the motor.

Vehicle Fitment

This regulator is commonly found in newer Peterbilt models (typically 2016–2024), including:

Heavy Duty: Peterbilt 389, 365, and 367

Vocational: Peterbilt 520 and 320

Earlier Models: Peterbilt 384, 386, and 587

Quality and Testing

TinzerMotor produces these window regulators and window motors with a focus on long-term high quality and mechanical reliability:

Heavy-Duty Construction: Uses thickened steel plate components and reinforced pivot points to prevent the "sagging" or jamming common in lower-quality aftermarket parts.

Extensive Testing: Each unit undergoes rigorous cycle testing, involving thousands of manual rotations under simulated glass weight to ensure the internal gears do not strip or slip over time.

Precision Fit: Designed to align perfectly with the original door mounting holes, ensuring a "bolt-on" installation without the need for drilling or modification.

Please contact: 

Ms Riva  

Wechat/WhatsApp +86 15355970956 

Email: riva@ruishuoautoparts.com

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Peterbilt Window Regulator R216010R HLK2538