Nugeon 99-02455A rear left brake caliper for the 2017-2021 BMW 230i and other vehicles clamps the pads against the rotor to slow the wheel. This remanufactured Nugeon brake caliper, also called a disc brake caliper, replaces the unit at the rear left wheel.
A caliper that sticks or leaks can show up as fluid seeping around the dust boot or a brake that drags at one wheel. Before you replace it, rule out worn pads, a damaged brake hose and sticky slides, since any of them can mimic a seized caliper.
This rear left caliper is a direct-fit replacement for the 2017-2021 BMW 230i, the 2017-2021 BMW 230i xDrive and the 2017-2020 BMW 430i. If your BMW is not one of these, look up its year and model in the "Vehicles it fits" section. The car has one caliper on each side of the rear axle: this listing is the left one, the right is ordered separately, and the two are normally replaced together.
Fit and size
Build and materials
One remanufactured rear left brake caliper with its mounting bracket, caliper slides, dust boots, caliper and pad hardware, bleeder screw with cap and crush washers. Brake pads, wear sensors, anti-squeal shims, bracket mounting bolts and mounting bolts are not included, so plan on new bolts.
Interchange / FMSI:
FMSI: D1613
Does the Nugeon 99-02455A fit a 2017-2021 BMW 230i xDrive?
Yes. Nugeon 99-02455A is the rear left caliper for the 2017-2021 BMW 230i xDrive, and it also fits the 2017-2021 BMW 230i and the 2017-2020 BMW 430i.
Does the Nugeon caliper come with brake pads?
No. Nugeon 99-02455A comes with its bracket, slides, dust boots, hardware, bleeder screw and cap, but brake pads, wear sensors, anti-squeal shims and bracket mounting bolts are not included.
How big is the piston in this rear left brake caliper?
The single steel piston is 42 mm (1.65 in) across. It sits in a floating caliper with a cast iron housing.
How do I tell if a rear brake caliper is sticking?
Signs can include one pad wearing much faster than the other, or the car drifting to one side under braking. Have the brakes inspected promptly if you notice either.
What thread does the bleeder screw on this caliper use?
The bleeder screw is M10-1.0, and the line inlet thread is M10 - 1.0. The bleeder screw and its cap come with Nugeon 99-02455A.
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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.
