PowerStop L3780 Disc Brake Caliper - Rear Left

PowerStop Rear OE Stock Replacement Caliper Overview

The PowerStop - Rear OE Stock Replacement Caliper (Part Number L3780) is designed specifically for Subaru Impreza and WRX STI models. This fixed disc brake caliper offers reliable braking performance with durable aluminum construction and precise engineering to match original equipment specifications.

• Fixed caliper type with two aluminum pistons
• Caliper casting made from lightweight aluminum
• 36.00 mm piston diameter for consistent braking force
• Gray finish for corrosion resistance and durability
• Compatible with Subaru Impreza and WRX STI rear brake systems
• Inlet and bleeder screw thread size: M10 x 1.0

Product Line Details: PowerStop - Rear OE Stock Replacement Caliper

The PowerStop - Rear OE Stock Replacement Caliper line focuses on delivering direct-fit replacement parts that meet or exceed original equipment standards. This product line is engineered to provide a seamless fit and function for rear brake systems, ensuring consistent braking performance and durability. The L3780 caliper maintains the OE specifications for Subaru Impreza and WRX STI models, making it a reliable choice for restoring rear brake hydraulics.

Technical Description and Features

This disc brake caliper features a fixed design with two aluminum pistons, each measuring 36.00 mm in diameter. The use of aluminum for both the caliper casting and pistons reduces unsprung weight while maintaining strength and heat dissipation. The gray finish helps protect against corrosion, extending the service life of the caliper. The inlet and bleeder screw thread sizes are standardized at M10 x 1.0, compatible with OEM brake lines and fittings. Note that mounting hardware and caliper slides are not included with this part.

Common Applications and Problem Solving

• Replacement for worn or seized rear calipers on Subaru Impreza and WRX STI
• Restores proper braking pressure and pedal feel
• Addresses brake fluid leaks from damaged pistons or seals
• Eliminates uneven brake pad wear caused by caliper malfunction
• Improves rear brake system reliability and safety

Installation Notes and Tips

Ensure compatibility with your specific Subaru Impreza or WRX STI model year before installation. Since mounting hardware and caliper slides are not included, retain or replace existing components as needed. Properly bleed the brake system after installation to remove air and maintain optimal brake performance. Use the correct M10 x 1.0 fittings for inlet and bleeder screws to avoid leaks.

Quality Assurance and Warranty

PowerStop manufactures this rear OE stock replacement caliper to meet strict quality standards, ensuring durability and consistent braking performance. While specific warranty details are not provided, PowerStop products typically come with manufacturer-backed coverage against defects in materials and workmanship. Refer to PowerStop documentation for exact warranty terms.