MPA Electrical BR45421G Disc Brake Rotor - Rear

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MPA Electrical BR45421G Disc Brake Rotor - Rear

Brand	MPA Electrical BR45421G
Position	Rear
Grade Type	Regular
Finish	Coated
Product Condition	New
Fits	BMW · 9 vehicles

OE-style vane design. Promotes efficient cooling and stronger stopping performance.

Q-Shield coating. Helps protect the rotor from rust in harsh conditions.

Coated brake rotor with like-new stopping performance and reduced noise, vibration, and fade.

$46.81Free shipping

In stock · usually ships same day before 1pm CST

Step 1 — Confirm fitment

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Confirm position

Select your vehicle to confirm fitment

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Step 2 — Quantity

Disc Brake Rotors are typically replaced in pairs, axle by axle.

Free shipping to the continental U.S.

Free returns within 60 days if it doesn't fit when fitment is verified.

Not what you need? See all Disc Brake Rotor options

Rear Brake Rotor for BMW 525i, 530i, 528i

MPA Electrical BR45421G is a coated rear disc brake rotor for select BMW applications. It is built with a regular-grade finish and OE-style vane design to support consistent cooling, quieter operation, and stable braking performance in everyday driving.

For drivers searching for a rear brake rotor for 2004-2007 BMW 525i or 530i, and 2008 BMW 528i, BR45421G provides a direct-fit replacement option with a protective coated surface for added corrosion resistance.

Key Features

Part number BR45421G
Rear disc brake rotor for select BMW models
Coated finish for added rust protection
OE-style vane design for efficient heat dissipation
Regular-grade replacement rotor
New condition

Detailed Description

MPA Electrical BR45421G is a rear brake rotor engineered for 2004-2007 BMW 525i, 2004-2007 BMW 530i, and 2008 BMW 528i applications. The coated surface helps protect the rotor from corrosion in harsh conditions, while the OE-style internal vane design supports airflow through the rotor to manage heat during repeated stops. This combination helps maintain smooth braking response and consistent pedal feel in normal street use.

The BR45421G rotor is a practical replacement choice when servicing rear brake wear on BMW 525i, BMW 530i, or BMW 528i vehicles. It is a direct-fit disc brake rotor for the rear position and is intended for drivers replacing worn, rusted, or heat-affected rotors.

What It Helps Solve

Brake pulsation caused by worn or uneven rotor surfaces
Reduced stopping consistency from heat buildup
Rust-related rotor deterioration
Noise associated with damaged rear rotors
Brake fade during repeated braking events

Installation Notes and Tips

Verify rear-position fitment before installation. Inspect brake pads, caliper hardware, and hub surfaces during rotor replacement to help ensure even contact and proper braking performance. Clean the rotor and mating surfaces before assembly to remove protective residue and debris.

Fits 2004-2007 BMW 525i, rear. Fits 2004-2007 BMW 530i, rear. Fits 2008 BMW 528i, rear.

Quality Assurance

Quality-Built Black Series rotors use an environmentally friendly protective coating that is formulated to withstand high temperatures while helping resist rust. The design focuses on OE-style cooling and dependable stopping performance for everyday service.

This part fits 9 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Position	Notes
2008	BMW	528i	Rear	Coated Rotor
2007	BMW	525i	Rear	Coated Rotor
2007	BMW	530i	Rear	Coated Rotor
2006	BMW	525i	Rear	Coated Rotor
2006	BMW	530i	Rear	Coated Rotor
2005	BMW	525i	Rear	Coated Rotor
2005	BMW	530i	Rear	Coated Rotor
2004	BMW	525i	Rear	Coated Rotor
2004	BMW	530i	Rear	Coated Rotor
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