Western 66930-1 – Pro Plus Straight Blade Square Quadrant

The genuine Western 66930-1 Quadrant serves as the heavy-duty structural steel sector forming the critical pivot foundation behind the moldboard assembly. Engineered exclusively for Western Pro Plus series contractor-grade straight-blade snowplows, this factory-original weldment provides the rigid internal reinforcement needed to anchor your trip springs, shock absorbers, and hydraulic angling lines. Commercial fleet mechanics install this authentic replacement quadrant to resolve severe structural distortion, cracked welds, or elongated mounting holes caused by high-impact collisions with hidden concrete curbs and manhole covers.

This updated style quadrant features a heavy-walled square configuration that directly replaces and supersedes the older, discontinued round-style 66930 quadrant assembly. Weighing 72 pounds and measuring 46 inches in width, this high-tensile steel sector attaches directly to the plow moldboard utilizing three structural hitch pins, four heavy-duty trip springs with eye bolts, and a dual shock absorber arrangement. The precision-machined center mounting port and the twin angling ram attachment holes are bored to an exact 1-inch diameter to accept original factory pin hardware without mechanical loose play or binding.

For commercial snow contractors and shop supervisors, managing quadrant alignment is vital to prevent blade twisting and isolate the truck-side chassis from severe torsional stress. The sector comes factory-finished in trademark Western black powder coating to isolate the underlying raw steel from corrosive moisture, winter salt brine, and abrasive scraping friction. Integrating this authentic factory component ensures your 8-foot, 8.5-foot, or 9-foot Pro Plus blade trips cleanly and resets uniformly during heavy-volume commercial clearing operations.

Benefits of the Western 66930-1 Quadrant

• Genuine OEM Structural Component: Designed to original factory dimensional blueprints for an exact structural fit on Western Pro Plus straight blades.

• Updated Square Profile: Features a reinforced square geometry that replaces older round-style 66930 sectors for increased structural strength.

• Precision 1-Inch Porting: Center pivot hole and cylinder attachment locations feature clean 1-inch bores to eliminate play and ensure tight pin lockups.

• Full Multi-Anchor Layout: Built with factory mounting points to accept three moldboard attach pins, four trip springs, and two dual shock absorbers.

• Protects Drivetrain Integrity: Prevents asymmetric load distribution to eliminate blade binding and shield the matching 66920 A-frame from torsional fatigue.

Additional Info and Common Related Parts

Always refer to your Western Plow’s documentation and vehicle-specific installation instructions to confirm compatibility and proper installation procedures.