Stoptech 128.62057L Disc Brake Rotor - Front Left

StopTech Sport Rotor for Front Left Braking

The StopTech Sport Cross-Drilled Disc Brake Rotor, part number 128.62057L, is a direct replacement front left rotor for factory brake systems using stock calipers. It is built for drivers who want improved braking response, cleaner heat management, and a more finished look behind the wheel.

Compatible with select Buick, Pontiac, and Oldsmobile applications, this rotor combines a vented design with cross-drilled surface machining and a coated hat finish for everyday street use. The 128.62057L is a practical upgrade for vehicles such as the Buick Century, Pontiac Grand Prix, and Oldsmobile Intrigue.

Key Features

• StopTech Sport Cross-Drilled Disc Brake Rotors line for OE-style direct replacement use
• Front left disc brake rotor application
• X-drilled surface helps move heat and brake dust away from the braking surface
• Vented rotor construction with straight vane style
• Coated hat finish for added corrosion resistance
• High-carbon metallurgy in most applications for quieter operation and improved crack resistance
• 5-lug mounting pattern with 118 mm bolt circle diameter
• Outside diameter: 278 mm; nominal thickness: 32.300 mm; discard thickness: 31.060 mm

Product Details

StopTech engineered the Sport Cross-Drilled Disc Brake Rotors line to work with factory brake systems and stock calipers while improving pedal feel and braking consistency. The cross-drilled surface supports heat dissipation and pad deglazing, which can improve bite in wet and dry conditions. The coated hat finish helps protect exposed areas from corrosion, while the rotor’s vented construction supports stable operation during repeated stops. Part number 128.62057L is a fitment-specific front left rotor for 1997-2005 Buick Century, 2000-2005 Buick LeSabre, 1998-2005 Pontiac Bonneville, 1999-2005 Pontiac Montana, 1997-2004 Buick Regal, 1997-2004 Oldsmobile Silhouette, 1997-2003 Pontiac Grand Prix, 2000-2002 Oldsmobile Intrigue, 1998-1999 Buick LeSabre, 1998-1999 Oldsmobile 88, 1998-1999 Oldsmobile Intrigue with JB9 and standard brakes, 1998-1999 Oldsmobile LSS, 1997-1999 Pontiac Trans Sport, and 1997-1998 Oldsmobile Regency.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Rotor Helps Address

• Brake fade during repeated stops
• Excess heat buildup at the rotor surface
• Pad glazing that can reduce initial bite
• Corrosion on exposed rotor surfaces
• Uneven braking feel from worn front left rotors

Installation Notes and Tips

Install this rotor on the front left position only and verify wheel clearance before service, especially on 2000-2005 Buick LeSabre models with 15-inch wheels. Confirm rotor dimensions, hub fitment, and brake pad condition before assembly. For best results, replace rotors in axle-matched pairs and follow the vehicle manufacturer’s bedding procedure after installation.

Quality Assurance

StopTech uses a coated finish and high-carbon metallurgy in most applications to support corrosion resistance, quieter operation, and improved crack resistance. This rotor is built as a 1-piece direct replacement disc for factory brake systems and stock calipers.