Warranty: This genuine part is guaranteed by Mazda's
factory warranty.
Fits the following 2003 Mazda Protege Submodels:
DX, ES, LX, Mazdaspeed, MP3 | 4 Cyl 2.0 L GAS
2003 Mazda Protege Brake Booster Parts and Q&A
Q: How to perform an operating check and air tightness check on a power brake booster on 2003 Mazda Protege?
A: Operate check: depress brake with engine off to ensure reserve unchanged; start engine while holding pedal-slight drop is normal. For air-tightness, run engine briefly, stop, then depress pedal slowly-decreasing travel shows airtightness. If it fails, check/replace vacuum hose/check valve. Replace booster rather than disassembling; follow removal/install steps and bleed brakes.