PowerStop Disc Brake Caliper P/N:L4989
Keep hydraulic pressure clamping your rear left pads with the PowerStop Disc Brake Caliper L4644, an Autospecialty by PowerStop brake caliper built as a direct replacement that bolts on in place of the original stock unit. This caliper is a rear left (driver-side rear) application that fits many vehicles and drops in with no modifications on models such as the 2000-2010 Chevrolet Impala, 2008-2009 Buick LaCrosse and 2008-2009 Buick Allure — see the "Vehicles it fits" section for the full list and engine-level details.
Sold individually — this listing is for one caliper. For even, balanced braking it's best practice to service both sides of the axle at the same time, so consider replacing the matching rear right caliper as well.
Product information is for general reference and may contain errors. See our Disclaimer.
Is this the right Impala brake caliper for a 2000-2010 Chevrolet Impala?
It's a rear left (driver-side rear) caliper and a direct-fit replacement for the listed applications, including the 2000-2010 Chevrolet Impala. See the "Vehicles it fits" section for the full list.
Does the L4644 fit a 2008-2009 Buick LaCrosse?
Yes. It's listed as a rear left caliper for the 2008-2009 Buick LaCrosse. See the "Vehicles it fits" section for engine-level details.
Is any modification needed to install it?
No. This Autospecialty by PowerStop caliper is bolt-on ready and installs directly in place of the original stock caliper with no modifications necessary.
What comes assembled on this caliper?
It's assembled with new seals, guide pins, high-temperature EPDM rubber dust boots, bleeder screws, stainless-steel brake pad attachment hardware and a mounting bracket, plus premium assembly lubricant.
Is this sold as a pair?
No, it's sold individually — this listing is one caliper. For even, balanced braking it's best practice to service both sides of the axle together, including the matching rear right caliper.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.