TRQ Front Left Power Window Regulator & Motor Assembly Drivers Side

In this review of the TRQ Front Left Power Window Regulator & Motor Assembly, the bottom line is simple: this is a practical, direct-fit replacement for drivers of older Peterbilt trucks who need a straightforward repair solution. It is best for owners of 1987-1996 Peterbilt 357, 1988 378, or 2003-2005 379 models who want a pre-assembled unit that replaces the original without modification. The reviewer found the assembly delivers solid fit and reliable operation for most routine window repairs, though long-term durability reports are mixed.

Key Features

• Direct-fit replacement: Pre-assembled components are designed to match the original equipment and reduce installation time by avoiding modifications.
• Wiring harness included: The unit ships with the wiring harness to simplify electrical hookup and restore power operation quickly.
• One-touch operation: Built for one-touch open and close operation so the window returns to the same function as the factory system.
• Steel frame construction: A steel frame provides structural support to the regulator for consistent window movement under normal use.
• Compatibility reference: Reference numbers 741-5401 and WIN00805 help confirm fitment for listed Peterbilt model years before purchase.

Who It's For

This assembly is aimed at professional mechanics and truck owners who maintain Peterbilt 357, 378, or 379 trucks from the listed years and want a ready-to-install, direct replacement that restores power window function. The pre-assembled nature and included wiring make it particularly useful for shops and DIYers comfortable with door panel removal and standard truck electrical connections.

It is not the best choice for those needing an anti-pinch motor, aftermarket performance upgrades, or guaranteed long-term heavy-duty service life beyond typical road use. If corrosion resistance or reinforced heavy-use components are a priority, consider higher-end OEM or heavy-duty alternatives.

Pros & Cons

Pros

• Functionally restores window movement with a proper fit for the listed Peterbilt models.
• Installation is straightforward thanks to a pre-assembled unit and included wiring harness.
• One-touch operation returns the convenience of factory-style switching.
• Good value for the price, balancing quality and cost for standard repairs.

Cons

• Durability is mixed in customer reports, with some users noting shorter life under heavy use.
• Mounting hardware and installation instructions are not included, which may require sourcing fasteners or relying on shop knowledge.

Specifications

Product	Power Window Motor & Regulator Assembly
Reference Numbers	741-5401, WIN00805
Operation Type	One-Touch (Open And Close)
Frame Material	Steel
Wiring Harness	Included
Wire Quantity	1
Mounting Hardware	Not Included

Our Verdict

The TRQ front left assembly is a sensible, cost-effective choice for repairing the driver's side power window on compatible Peterbilt models, offering a true direct-fit replacement and restored one-touch function. For routine repairs and budget-conscious owners it is a good value, though those needing maximum longevity or extra features should evaluate higher-end options.

Frequently Asked Questions

Does this unit include the wiring harness?
Yes, the wiring harness is included to simplify electrical connection during installation.

Is mounting hardware provided?
No, mounting hardware is not included, so you may need to reuse factory fasteners or obtain replacements.

Will it fit my Peterbilt?
It is compatible with specified model years (1987-1996 357, 1988 378, 2003-2005 379) and reference numbers 741-5401 and WIN00805 should be checked to confirm fitment.