How to replace the Brake Master Cylinder on 2010 Mazda 3?

Drain the master cylinder on the power brake booster, then remove the engine cover, battery, PCM and tray. Protect fittings, disconnect hoses and level switch, loosen and plug brake lines, and remove the unit. Transfer reservoir/seals to the new cylinder, bench-bleed, install, tighten, refill, bleed and test brakes.

Genuine 2010 Mazda 3 Brake Master Cylinder

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2 Brake Master Cylinders found

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2010 Mazda 3 Master Cylinder Part Number: B3YF-43-40ZA
$250.74 MSRP: $334.39
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Product Specifications
- Other Name: Cylinder, Tandem Master
- Replaces: B37F-43-400, B3YF-43-40Z
- Item Weight: 2.20 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: B3YF-43-40ZA
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
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Fits the following 2010 Mazda 3 Submodels:
- Mazdaspeed, S | 4 Cyl 2.3 L GAS
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2010 Mazda 3 Master Cylinder Part Number: BPYS-43-40ZC
$323.19 MSRP: $431.00
You Save: $107.81 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Item Weight: 2.50 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: BPYS-43-40ZC
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following 2010 Mazda 3 Submodels:
- i, Mazdaspeed, S, SP23 | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS

2010 Mazda 3 Brake Master Cylinder Parts and Q&A

Q: How to replace the Brake Master Cylinder on 2010 Mazda 3?
A: Drain the master cylinder on the power brake booster, then remove the engine cover, battery, PCM and tray. Protect fittings, disconnect hoses and level switch, loosen and plug brake lines, and remove the unit. Transfer reservoir/seals to the new cylinder, bench-bleed, install, tighten, refill, bleed and test brakes.