A-Premium Brake Caliper Assembly Rear Side for 1999-2005 Vehicles

In this review the A-Premium Brake Caliper Assembly is evaluated for drivers who need a straightforward rear-side replacement for late 1990s to early 2000s GM full-size cars and trucks. The bottom line: it is a practical, budget-conscious replacement caliper that fits a long list of Chevrolet, GMC, Cadillac and Buick platforms when the vehicle uses the specified brake code and inlet/bleeder port sizes. The reviewer found installation and initial operation to be simple and reliable, making this caliper a good option when exact fitment and basic durability are the main priorities.

Key Features

• Vehicle fitment: Covers a wide range of rear-side applications for 1999-2005 Chevrolet, GMC and Cadillac models, helping owners locate a direct replacement without modification.
• Brake piston: Single 1 piston design with a 2.129 in piston diameter for consistent pressure and predictable braking feel when matched to the correct brake code.
• Port sizes: M10x1.0 inlet and bleeder ports match original equipment thread specifications for a straightforward hose and bleeder connection.
• Phenolic piston material: Uses a phenolic piston which reduces heat transfer to the brake fluid and helps resist corrosion inside the piston bore.
• Antirust coating: External antirust coating improves resistance to corrosion in wet climates and extends visible service life on older vehicles.
• Warranty: Backed by a one-year unlimited-mileage guarantee for added confidence after installation.

Who It's For

This caliper is aimed at DIY mechanics and independent shops working on compatible GM full-size sedans and trucks from about 1999 through 2005 where a rear-side, single-piston replacement is required. It is particularly useful when the vehicle lists the referenced part numbers or the brake code J55 and the M10x1.0 port threads are present.

Shoppers who need premium OEM-grade performance, multi-piston performance upgrades, or stamped performance calipers should look elsewhere. Also avoid this part if your vehicle has different brake codes or different port and piston size specifications than those listed.

Pros & Cons

Pros

• Good value and overall quality for the price, delivering a functional replacement that fits as indicated by customers.
• Ease of installation reported by many users, with standard port threads and a direct-fit design reducing shop time.
• Phenolic piston and antirust coating offer practical durability for typical driving conditions.
• One-year unlimited-mileage guarantee provides added reassurance after purchase.

Cons

• Some customers reported leakage after extended use, so long-term toughness may vary by application and maintenance.

Specifications

Application	Rear side replacement for select 1999-2005 GM models
Brake piston count	1 Piston
Piston size (OD)	2.129 in
Inlet port size	M10x1.0
Bleeder port size	M10x1.0
Piston material	Phenolic
Reference numbers	18040087, 18040088, 18-B4726, 18-B4727, 18-P4726, 18-P4727

Our Verdict

The A-Premium rear brake caliper is a sensible, cost-effective replacement for compatible GM cars and trucks when the fitment, brake code and port sizes match. It offers straightforward installation, a phenolic piston and antirust coating for practical longevity, and a one-year guarantee that makes it a solid value for DIYers and independent shops. Those needing long-term OEM-level durability or aftermarket performance upgrades should evaluate higher-end options.

Frequently Asked Questions

Will this caliper fit my Silverado 1500?
If your Silverado 1500 is a 1999-2002 rear-side application and uses brake code J55 with M10x1.0 ports, this caliper is listed as compatible.

Does it come with pads or hardware?
The listing describes a caliper assembly; customers should verify whether pads and mounting hardware are included for their purchase, as this review is based on the caliper assembly specifications.

What warranty is offered?
A-Premium provides a one-year unlimited-mileage guarantee on this disc brake caliper assembly for peace of mind after installation.