Zimmermann 400.5550.20 Disc Brake Rotor - Rear, Rear Left or Rear Right

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Zimmermann 400.5550.20 Disc Brake Rotor - Rear, Rear Left or Rear Right

Brand	Zimmermann 400.5550.20
Position	Rear, Rear Right, and Rear Left
Weight [kg]	7.4
Fits	Mercedes-Benz · 7 vehicles

OE-reference fitment. Cataloged for select Mercedes-Benz AMG rear brake applications.

Rear brake rotor. Built for rear disc brake service on performance-oriented brake systems.

Part number 400.5550.20 helps confirm the correct rotor before ordering.

$123.53Free shipping

In stock · usually ships same day before 1pm CST

Step 1 — Confirm fitment

Free return shipping if it doesn't fit when you check fitment here first.

Confirm position

Select your vehicle to confirm fitment

Verify this part fits before purchasing — free returns if it doesn't

Step 2 — Quantity

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

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

Not what you need? See all Disc Brake Rotor options

Overview

Zimmermann disc brake rotor 400.5550.20 is a rear brake rotor for select Mercedes-Benz AMG applications. It is listed for rear left and rear right fitments on 2021 models, plus rear fitment on the 2020 CLA45 AMG.

Key Features

Disc brake rotor for rear axle braking service
Fits 2021 Mercedes-Benz A35 AMG, rear right
Fits 2021 Mercedes-Benz A35 AMG, rear left
Fits 2021 Mercedes-Benz CLA35 AMG, rear right, current OE
Fits 2021 Mercedes-Benz CLA35 AMG, rear left, current OE
Fits 2021 Mercedes-Benz CLA45 AMG, rear right, current OE
Fits 2021 Mercedes-Benz CLA45 AMG, rear left, current OE
Fits 2020 Mercedes-Benz CLA45 AMG, rear
Part number 400.5550.20 for fitment verification

Detailed Description

Zimmermann 400.5550.20 is a rear disc brake rotor built for specific Mercedes-Benz AMG brake applications. The fitment data covers 2021 Mercedes-Benz A35 AMG rear left and rear right positions, 2021 Mercedes-Benz CLA35 AMG rear left and rear right positions with current OE notes, 2021 Mercedes-Benz CLA45 AMG rear left and rear right positions with current OE notes, and 2020 Mercedes-Benz CLA45 AMG rear fitment. Use the part number 400.5550.20 to confirm the correct rotor before ordering.

This rotor is a direct service part for vehicles that need rear brake disc replacement on the Mercedes-Benz A35 AMG and Mercedes-Benz CLA45 AMG platform. The listed weight is 7.4 kg.

Common Uses

Replacing a worn rear brake rotor
Correcting brake pulsation from rotor wear
Restoring braking surface condition after scoring or heat damage
Servicing rear brake noise caused by rotor deterioration

Installation Notes

Verify the rear position and side before installation. Match the vehicle year, model, and notes exactly to the fitment table, especially for current OE applications. Confirm rotor dimensions and brake system details against the original part number 400.5550.20 before installation.

Quality Assurance

Zimmermann brake components are specified for precise vehicle applications, and this rotor is cataloged with OE-reference fitment notes for select Mercedes-Benz AMG models.

This part fits 7 vehicles

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

Year	Make	Model	Drive Type	Liters	Cylinders	Position	Notes
2021	Mercedes-Benz	A35 AMG	—	2.0L	L4	Rear Right	—
2021	Mercedes-Benz	A35 AMG	—	2.0L	L4	Rear Left	—
2021	Mercedes-Benz	CLA35 AMG	—	2.0L	L4	Rear Right	Current Oe
2021	Mercedes-Benz	CLA35 AMG	—	2.0L	L4	Rear Left	Current Oe
2021	Mercedes-Benz	CLA45 AMG	—	2.0L	L4	Rear Right	Current Oe
2021	Mercedes-Benz	CLA45 AMG	—	2.0L	L4	Rear Left	Current Oe
2020	Mercedes-Benz	CLA45 AMG	AWD	2.0L	L4	Rear	—
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