Centric 145.64001 Disc Brake Caliper Piston - Front

Centric Premium Phenolic Caliper Piston Overview

The Centric Premium Phenolic Caliper Pistons 145.64001 is a front disc brake caliper piston built for specific GM minivan and crossover brake applications. Made from phenolic material, it provides the dimensional accuracy needed for proper caliper operation on vehicles such as the Buick Rendezvous, Pontiac Aztek, Oldsmobile Silhouette, and Pontiac Montana.

Centric Premium Phenolic Caliper Pistons are part of the Centric Premium Phenolic Caliper Pistons product line, focused on replacement caliper piston dimensions and material selection for brake hydraulic service. Part number 145.64001 is specified for front-position applications where the original piston size and profile must match the caliper bore.

• Phenolic material for brake caliper piston replacement
• Front disc brake caliper piston application
• Piston outside diameter: 2.4921 in / 63.90 mm
• Inside diameter: 42.70
• Thickness: 0.77766 in / 19.94 mm
• Length: 55.73
• Centric part number 145.64001

Detailed Fitment and Application

This disc brake caliper piston is used in front brake hydraulic service where the original piston has worn, cracked, or no longer seals correctly. It is a direct-fit style replacement for 2002-2007 Buick Rendezvous, front; 2001-2005 Pontiac Aztek, front; 2002-2004 Oldsmobile Silhouette, front; and 2002-2004 Pontiac Montana, front. The 145.64001 piston is sized to match the caliper design used on these applications, helping restore consistent brake pedal response and caliper movement.

For buyers searching for a front brake caliper piston for a 2002-2007 Buick Rendezvous or a 2001-2005 Pontiac Aztek, this Centric Premium Phenolic Caliper Pistons part number 145.64001 provides the required phenolic construction and listed dimensions for the specified vehicles.

What This Part Helps Address

• Worn or damaged front caliper piston surfaces
• Brake fluid leakage at the piston area when the piston no longer seals properly
• Uneven caliper movement caused by piston wear or distortion
• Brake drag related to incorrect piston fit or finish
• Loss of braking consistency on the listed Buick, Pontiac, and Oldsmobile applications

Installation Notes and Tips

Verify caliper bore size, piston diameter, and thickness against the removed part before installation. Clean the caliper bore thoroughly, inspect the seal and dust boot condition, and confirm the piston seats squarely during assembly. Because this is a front brake hydraulic component, careful measurement and brake system cleanliness are important for proper operation.

Quality Assurance

Centric brake hydraulics are cataloged by application and dimension to support accurate replacement selection. Confirm fitment by year, make, model, and front position before ordering. Part number 145.64001 is the reference to use when matching this Centric Premium Phenolic Caliper Pistons application.