4723012040 Toyota CAP ASSY, BRAKE MASTER CYLINDER RESERVOIR FILLER, Price: 7.48$, Weight: 0.027kg
| Make | Number | Name | Availability | Weight, kg | Ship in, Days | Price |
|---|---|---|---|---|---|---|
Toyota |
4723012040 |
CAP ASSY, BRAKE MASTER CYLINDER RESERVOIR FILLER |
130 |
0.027 |
2-3 |
7.48$ |
Substitutions
| Make | Number | Name | Availability | Weight, kg | Processing, days | Price | |
|---|---|---|---|---|---|---|---|
| Toyota |
4723001030
|
CAP ASSY, BRAKE MASTER CYLINDER RESERVOIR FILLER
|
0 |
0.058
|
-
|
7.86$
|
Not Available |
Brake Fluid Reservoir Cap Assembly ️
This small cap is a critical sealing part on the brake master cylinder reservoir. It keeps brake fluid clean, maintains the correct pressure balance, and helps the braking system stay safe and responsive. Even though it looks simple, it plays a big role in protecting your brake hydraulics from contamination.
Why this part is needed
The reservoir must be sealed to stop dirt, moisture, and air from getting into the brake fluid. Brake fluid absorbs water over time, so a tight, correct cap slows down contamination and supports stable braking performance.
How it works
The cap locks onto the reservoir neck and seals with its internal gasket. Many designs also allow controlled venting, so fluid level changes with pad wear and temperature won’t create vacuum or pressure that affects pedal feel.
What happens if it’s broken
A cracked or loose cap can let moisture in, leading to spongy pedal, reduced boiling point, corrosion in the master cylinder, and leaks around the top. In severe cases, braking distance increases and ABS components can suffer.
Compatibility
- Avalon
- Camry
- Camry/Hybrid
- Corolla
- Corolla Sed
- Corolla/Matrix
- Highlander
- Matrix
- Rav4
- Sequoia
- Sienna
- Solara
- Tacoma
- Tundra
- Voltz