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DormanPart #: M630428
Dorman M630428 Brake Master Cylinder
⚙️ 5 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$138.74Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mazda, 3
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Brake Master Cylinder options
Dorman M630428 Brake Master Cylinder
| Brand | Dorman |
| Part Number | M630428 |
| Mounting Hardware Included | No |
| Master Cylinder Bore Diameter | 1 |
| Master Cylinder Material | Aluminum |
| Reservoir Included | Yes |
| Secondary Outlet Thread Diameter | 10 |
| Sensor Included | Yes |
| Number of Outlets | 2 |
| Package Contents | Master cylinder |
| Rearward Outlet Size | M10 x 1.0 |
| Thread Pitch | 1.0 |
This part fits 5 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2008 | Mazda | 3 | N/A | Fits brake master cylinders with a 25 mm bore size. |
| 2007 | Mazda | 3 | N/A | Fits brake master cylinders with a 25 mm bore size. |
| 2006 | Mazda | 3 | N/A | Fits brake master cylinders with a 25 mm bore size. |
| 2005 | Mazda | 3 | N/A | Fits brake master cylinders with a 25 mm bore size. |
| 2004 | Mazda | 3 | N/A | Fits brake master cylinders with a 25 mm bore size. |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
11-310913-3109130.45423BNYR4340ZF142627M55313MC391048MR527633
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.