Peterbilt Window Regulator R216009R R216011R

The R21-6009R is a power (electric) window regulator for the right-hand (passenger) side. It is a modern OEM replacement for Peterbilt trucks, specifically designed to supersede older models like the R21-6011R and R21-6004R.

Key Specifications

Part Number: R21-6009R (Right-Hand).

Left-Hand Equivalent: R21-6009.

Operation: Electric power with a motor assembly.

Build: Features a combination of metal and plastic gears. 

Vehicle Fitment

This part is widely used in newer Peterbilt models (roughly 2016–2024), including: 

Medium Duty: Peterbilt 220, 337, and 348.

Heavy Duty & Vocational: Peterbilt 365, 367, 389, and 520.

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.

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

Alibaba Shop linkage:

Peterbilt Window Regulator R216009R R216011R