PowerStop L7158 Disc Brake Caliper - Front Left

Front Left OE Replacement Caliper

PowerStop L7158 is a front left disc brake caliper built as an OE stock replacement for select Mazda applications. It is remanufactured in Chicago, pressure tested for piston operation and leak prevention, and assembled with new seals, slide pins where applicable, dust boots, bleeder screws, and stainless steel brake pad abutment clips.

Compatible with 2014-2016 Mazda 3 front left, 2017-2018 Mazda 3 front left with Japan-built and without electric parking brake notes, and 2016-2021 Mazda CX-3 front left. This PowerStop front OE stock replacement caliper is a direct-fit service part for restoring factory-style braking performance.

Key Features

• Direct replacement disc brake caliper for the front left position
• Cast iron caliper body with gray finish
• Floating caliper design with one 48.01 mm phenolic piston
• Caliper slides included; mounting bracket included
• High-temperature EPDM rubber dust boots for improved durability
• Premium silicone lubricant used for smoother caliper movement
• Bleeder screw thread size: M10 x 1.0
• PowerStop L7158 for Mazda 3 and Mazda CX-3 front left applications

Product Details

The PowerStop Autospecialty OE Replacement Brake Calipers line focuses on stock-style service parts for drivers who want a direct bolt-in solution without changing the original brake layout. L7158 follows that approach with a remanufactured cast iron housing, a phenolic piston, and the hardware needed for proper caliper function, including slides and a mounting bracket. The result is a front left caliper that matches the original application requirements for Mazda 3 and Mazda CX-3 models listed in the fitment data.

This part number, L7158, is a practical choice for replacing a worn, sticking, or leaking front left caliper on a Mazda 3 or Mazda CX-3. It is built to restore normal brake pedal response and consistent pad movement while maintaining OE-style fitment.

Common Repair Uses

• Leaking front left brake caliper
• Sticking or seized caliper piston
• Uneven front brake pad wear
• Poor brake release after pedal application
• Corrosion or damage to the original caliper housing

Installation Notes

Verify front left fitment before installation on 2014-2016 Mazda 3, 2017-2018 Mazda 3 with Japan-built and without electric parking brake notes, and 2016-2021 Mazda CX-3. Inspect brake hoses, pads, rotors, and mounting surfaces during service, and bleed the hydraulic system after installation. Confirm the bleeder screw thread size is M10 x 1.0 when servicing the caliper. Part number L7158 should be matched to the vehicle’s exact brake configuration before ordering.

Quality Assurance

PowerStop remanufactures the caliper and bracket in its Chicago, IL facility and pressure tests each unit to verify piston operation and help prevent leaks. The assembly uses new seals, dust boots, bleeder screws, and stainless steel brake pad abutment clips, with EPDM rubber boots and silicone lubricant selected for smoother operation in demanding conditions. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.