Restore firm, reliable braking with the Autospecialty by PowerStop Disc Brake Caliper L4988, a direct-replacement front-left caliper that bolts on in place of the original stock unit with no modifications necessary. It fits the 2006-2011 Buick Lucerne, 2006-2013 Chevrolet Impala, 2014-2016 Chevrolet Impala Limited, and 2006-2007 Chevrolet Monte Carlo — see the Buyer's Guide tab for the engine-level details on your vehicle.
- Bolt-on ready: installs directly in place of the factory caliper, no modifications required.
- Expertly assembled: built with new seals, caliper guide pins, dust boots, bleeder screws, stainless-steel brake pad attachment hardware, and mounting bracket.
- High-temperature EPDM rubber dust boots and premium assembly lubricant help provide smooth caliper operation and durability in demanding conditions.
- 100% pressure tested and inspected for consistent, high-quality brake performance.
The caliper clamps the brake pads against the rotor to convert the hydraulic pressure from your master cylinder into stopping force. Signs a caliper may need replacing include a sticking or dragging brake, uneven pad wear, fluid leaking at the caliper, or a pull to one side. Sold individually — this listing is for one caliper; for even, balanced braking, replace the caliper on the opposite side as a matched pair when service is due.
Frequently Asked Questions
What position does this caliper fit?
The L4988 is a front-left disc brake caliper. It bolts on directly in place of the original stock caliper with no modifications necessary.
Which vehicles does this caliper fit?
It fits the 2006-2011 Buick Lucerne, 2006-2013 Chevrolet Impala, 2014-2016 Chevrolet Impala Limited, and 2006-2007 Chevrolet Monte Carlo. See the Buyer's Guide tab for engine-level details.
Is this caliper sold as a pair?
No, it is sold individually — this listing is for one caliper. For even, balanced braking it's best practice to replace both sides as a matched pair when service is due.
What is included with this caliper?
It is assembled with new seals, caliper guide pins, dust boots, bleeder screws, stainless-steel brake pad attachment hardware, and a mounting bracket.
How do I know if my caliper needs replacing?
Signs a caliper may need replacing include a sticking or dragging brake, uneven pad wear, brake fluid leaking at the caliper, or a pull to one side. Diagnose the cause before replacing.
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