Kenworth Window Regulator ​R21-6013 HLK2151

The R21-6013 is the Left-Hand (Driver Side) electric power window regulator for Paccar trucks. It is the direct counterpart to the R21-6013R (Passenger Side) and is primarily used in aerodynamic Kenworth and Peterbilt models.

• Part Name: Power Window Regulator with Motor.

• Placement: Front Door, Left-Hand (LH) / Driver's Side.

• Manufacturer: TinzerMotor

• Material: Built with metal and plastic gear construction and a cable-style lift system.

Key Specifications

Part Number: R21-6013 (also referred to as R21-6013L)

Position: Left-Hand (LH) / Driver Side

Operation: Electric (Power)

Mechanism: Motor-driven assembly

Right-Hand Equivalent: R21-6013R

Common Vehicle Fitment

This Kenworth and Peterbilt Power Window Regulator is a standard replacement for specific aerodynamic Paccar cabs, typically from 2003 to 2015:

Kenworth: T2000 (2003–2010), T700 (2011–2015).

Peterbilt: 387 (2006–2011), 587 (2011–2015), and early 386 models.

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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Kenworth Window Regulator R21-6013 HLK2151