Kenworth Window Regulator R21-1010 HLK2507

The R21-1010 HLK2507 K092408 is the Left-Hand (Driver Side) electric power window regulator and motor assembly for Kenworth trucks.

• Part Name: Electric Window Regulator (Left Hand)

• Placement: Front Door, Left Side (Driver Side)

• Operation: Electric (Power operated)

• Motor Included: Yes, typically features a 2-pin electrical connector

• Manufacturer: TinzerMotor

Key Specifications

Part Number: R21-1010 (also referred to as R21-1010L)

Position: Left-Hand (LH) / Driver Side

Operation: Electric (includes the 2-pin motor)

Mechanism: Cable-driven "Daylite Door" assembly

Right-Hand Equivalent: R21-1010R

Common Vehicle Fitment

This R21-1010 HLK2507 K092408 Kenworth power window regulator is specifically for Kenworth models equipped with the "Daylite Door" (the door with the sloped front window) from approximately 1997 to 2004/2009:

Kenworth T600: 1997–2004.

Kenworth T800: 1997–2009.

Kenworth W900: 1997–2009.

Kenworth T300 & C500: Models within the same era.

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:

Kenworth Window Regulator R21-1010 HLK2507