Mack Window Regulator 11QX51M HLK6238

To Replace:

MACK

For Vehicle:

CH CL CX Models (1997-2002)

MR688P 1999

MR688S 1999

Part No.:

11QX51M

25169076

HLK6238

85147153

Tinzer No.

1J-R

Introduction
factory

The 11QX51M is a heavy-duty manual window regulator (non-electric) designed for the front driver side (Left Hand) of Mack trucks. While many modern trucks use power windows, this manual version remains a critical component for vocational and older Mack models. Manufactured by brands like TinzerMotor, this part is built to withstand the high-vibration environment of heavy-duty trucking.

Technical Information

Part Type: Manual Window Regulator (Crank-operated).
Position: Front, Driver Side (Left Hand / LH).
Operation: Manual (requires a window crank handle, not included).
Materials: High-grade galvanized steel for the regulator frame and tracks to prevent rust and corrosion.
Design: Scissor-style or rail-style mechanical linkage engineered for smooth, low-effort cranking.

Application Guide

This manual regulator is compatible with several Mack heavy-duty models, typically covering the following years:

Mack Granite (CV / GU Series): 2001–2018.
Mack Vision (CX Series): 2000–2005.
Mack Pinnacle (CH / CHU / CXU Series): 2006–2018.
Mack Titan: 2008–2018.

Interchange & Cross-Reference Numbers

The 11QX51M is a direct mechanical replacement for several OEM and aftermarket part numbers:

Mack OEM: 11QX51M, 21545645, 25166299, 82348512.
Dorman: 749-5108.
Automann: 174.45000.
PAI: 740382.

Quality and Testing

TinzerMotor produces these manual window regulators 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:

Mack Window Regulator 11QX51M HLK6238

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