Centric 145.48009 Disc Brake Caliper Piston - Rear

Overview of Centric Premium Phenolic Caliper Pistons 145.48009

The Centric Premium Phenolic Caliper Piston 145.48009 is designed for reliable brake performance in select GM vehicles. Engineered with phenolic material, this disc brake caliper piston offers durability and resistance to heat and corrosion, making it suitable for models like the Buick Enclave and Chevrolet Traverse.

• Constructed from phenolic material for reduced heat transfer
• Length: 50.69 mm for precise fitment
• Inside diameter: 29.70 mm ensuring proper seal and function
• Outer diameter: 48.07 mm (1.87473 in) for compatibility with specific calipers
• Thickness: 9.38 mm (0.36582 in) for structural integrity

Detailed Product Description

This Centric Premium Phenolic Caliper Piston, part number 145.48009, is manufactured to meet the exact specifications required for disc brake calipers on various GM vehicles. The phenolic construction reduces heat absorption compared to metal pistons, helping to prevent brake fluid boiling and maintaining consistent braking performance. The piston’s dimensions, including a length of 50.69 mm and an inside diameter of 29.70 mm, ensure a precise fit within the caliper bore, minimizing the risk of leaks or piston sticking. The outer diameter of 48.07 mm and thickness of 9.38 mm provide the necessary strength and durability for long-term use.

About Centric Premium Phenolic Caliper Pistons

The Centric Premium Phenolic Caliper Pistons line focuses on delivering high-quality phenolic pistons designed to reduce heat transfer and corrosion inside the brake caliper. This product line is engineered to provide consistent braking performance and extended service life, particularly for vehicles that demand reliable brake hydraulics. The 145.48009 piston is part of this line, offering a balance of material properties and precise dimensions tailored for select Buick, Cadillac, Chevrolet, GMC, and Saturn models.

Compatible Vehicles and Common Applications

• Buick Acadia and Acadia Limited
• Cadillac XTS
• Chevrolet Traverse
• GMC Acadia and Outlook
• Saturn Outlook

This piston is specifically designed for disc brake calipers on these models, ensuring proper fit and function.

Common Issues Addressed by This Caliper Piston

• Brake fluid overheating and boiling due to metal piston heat transfer
• Corrosion and rust buildup inside the caliper bore
• Brake drag caused by piston sticking or improper fit
• Reduced braking efficiency from worn or damaged pistons
• Brake fluid leaks resulting from piston seal failure

Installation Notes and Tips

When installing the Centric Premium Phenolic Caliper Piston 145.48009, ensure the caliper bore is clean and free of debris. Lubricate the piston and seals with appropriate brake fluid or assembly grease to facilitate smooth movement. Verify the piston dimensions match the caliper specifications for your Buick, Cadillac, Chevrolet, GMC, or Saturn model. Proper installation helps maintain brake system integrity and performance.

Quality Assurance and Warranty

Centric Premium Phenolic Caliper Pistons are manufactured to meet or exceed OEM standards for material and dimensional accuracy. While specific warranty details for part number 145.48009 may vary, Centric products typically come with a limited warranty against defects in material and workmanship. Refer to the product documentation for exact warranty terms.