Stoptech 128.66057L Disc Brake Rotor - Front Left

StopTech Sport Cross-Drilled Rotor for Front Left Fitment

The StopTech Sport Cross-Drilled Disc Brake Rotor is a direct replacement disc for factory brake systems and stock calipers. This front left rotor is built for drivers who want stronger pedal response, improved heat management, and a cleaner look behind the wheel.

Part number 128.66057L is engineered for select Cadillac Escalade, Chevrolet Tahoe, GMC Yukon, and related full-size truck and SUV applications. It combines cross-drilled surface design with corrosion protection and a vented rotor construction for everyday street use.

Key Features

• StopTech Sport Cross-Drilled Disc Brake Rotors line for OE-style replacement fitment
• Front left disc brake rotor, part number 128.66057L
• X-drilled surface helps disperse heat and brake dust
• Cross-drilled pattern helps reduce pad glazing and improve initial bite
• Black e-coating helps protect exposed surfaces from corrosion
• High-carbon metallurgy in most applications for quieter operation and improved crack resistance
• Vented rotor design with straight vanes
• Coated hat finish
• 330 mm outside diameter, 30 mm nominal thickness, 28 mm discard thickness

Detailed Description

StopTech Sport Cross-Drilled Disc Brake Rotors are made as one-piece direct replacement brake discs for factory brake systems and stock calipers. The drilled surface supports heat and dust dispersal while helping maintain consistent pad contact under wet and dry braking conditions. For drivers searching for a front left brake rotor for 2015-2020 Cadillac Escalade, 2007-2014 Chevrolet Tahoe, or 2007-2014 GMC Yukon, this rotor matches the fitment and performance profile of a street-focused upgrade.

The rotor measures 12.992 inches in outside diameter and uses a floating disc mounting design with a 6-lug pattern, 140.5 mm bolt circle, and 78.5 mm center hole diameter. The coated finish and black e-coating add corrosion resistance, while the vented, straight-vane construction supports thermal control during repeated stops. Part number 128.66057L is also listed for select Chevrolet Silverado 1500 and GMC Sierra 1500 front left applications, including certain 2005-2020 configurations.

What This Rotor Helps Address

• Brake fade during repeated stops
• Pad glazing from excess heat buildup
• Brake dust accumulation on the rotor surface
• Corrosion on exposed rotor areas
• Reduced initial bite in wet or dry conditions

Installation Notes and Fitment

• Fits 2015-2020 Cadillac Escalade, front left, except 6 piston BBK
• Fits 2015-2020 Cadillac Escalade ESV, front left, except 6 piston BBK
• Fits 2015-2020 Chevrolet Tahoe, front left, except 6 piston BBK
• Fits 2015-2020 GMC Yukon, front left, except 6 piston BBK
• Fits 2015-2020 GMC Yukon XL, front left, except 6 piston BBK
• Fits 2013-2019 Cadillac XTS, front left, 6 lug
• Fits 2019 Chevrolet Silverado 1500, front left, except 6 piston BBK, old body style
• Fits 2014-2018 Chevrolet Silverado 1500, front left, except 6 piston BBK
• Fits 2007-2014 Chevrolet Tahoe, front left
• Fits 2007-2014 GMC Yukon, front left
• Fits 2005-2006 Chevrolet Silverado 1500, front left
• Fits 2005-2006 GMC Sierra 1500, front left

Verify rotor dimensions, lug count, and brake package before installation. Some applications note exclusions for 6 piston BBK, police package, old body style, or specific front bracket cast numbers. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

StopTech manufactures this rotor as a direct replacement brake disc with corrosion-resistant coating and high-carbon metallurgy used in most applications. The design focuses on consistent braking performance, quieter operation, and improved crack resistance for street-driven trucks and SUVs.