HONDA 45520-MA5-672 Master Cylinder Reservoir Diaphragm GB500 89-90

( Machine Type: Street Motorcycle ), ( Items Included: Master Cylinder Reservoir Diaphragm ), ( Manufacturer Part Number: 45520-MA5-672 ), ( Material: Rubber ), ( Vintage Part: Yes ), ( California Prop 65 Warning: No Warranty ), ( Type: Carburetor ), ( Unit Type: Unit ), ( Universal Fitment: No ), ( Country Of Origin: Japan )

Review HONDA Master Cylinder Reservoir Diaphragm Oem 89-90 fits VF100R

The Honda 45520-MA5-672 Master Cylinder Reservoir Diaphragm is an essential component for the hydraulic braking system in certain Honda VF100R motorcycles manufactured between 1989 and 1990. This part is specifically designed for the GB500 master cylinder and plays a critical role in maintaining the correct brake fluid level and pressure within the system.

The diaphragm is a flexible, reinforced rubber component that separates the brake fluid from the atmospheric air in the reservoir. Its primary function is to expand and contract in response to changes in brake pedal pressure, allowing fluid to flow into the master cylinder when the brake is applied and preventing air from entering when the brake is released. This helps ensure consistent and reliable braking performance.

The Honda 45520-MA5-672 Master Cylinder Reservoir Diaphragm is manufactured to meet OEM specifications, ensuring a precise fit and reliable operation. Its robust design can withstand the rigors of high-performance motorcycle use, making it an ideal replacement for a worn or damaged diaphragm.

Installing the new diaphragm is a straightforward process, typically involving the removal of the old component and the installation of the new one in its place. It is recommended that the master cylinder be bled after installing a new diaphragm to remove any air bubbles and ensure proper brake function.

In summary, the Honda 45520-MA5-672 Master Cylinder Reservoir Diaphragm is a critical component for the hydraulic braking system in select Honda VF100R motorcycles. Its role in separating brake fluid from air and maintaining consistent fluid pressure makes it an essential part of reliable and effective braking performance. This OEM-quality part is designed to meet the specifications of the GB500 master cylinder and is an excellent choice for motorcycle enthusiasts seeking to maintain or restore the braking capabilities of their Honda VF100R.

The Honda 45520-MA5-672 master cylinder reservoir diaphragm is a critical component for the hydraulic braking system in Honda VF100R motorcycles manufactured between 1989 and 1990. Here are some pros and cons that may help you decide whether to purchase this part:

1. Ensures Proper Brake Functioning: This part is essential for maintaining the required hydraulic pressure to operate the brakes effectively. A worn-out or damaged diaphragm can result in poor braking performance, so replacing it is crucial for safety reasons.

2. OEM Part: This is an original equipment manufacturer (OEM) part, which means it is designed and manufactured by Honda specifically for use in their motorcycles. Using an OEM part ensures that it fits perfectly and functions as intended.

3. Long-Term Reliability: Honda is known for producing high-quality parts, and this diaphragm is no exception. By investing in a genuine OEM part, you can expect it to last longer than aftermarket alternatives.

1. Cost: Original equipment manufacturer parts can be more expensive compared to aftermarket alternatives. However, considering the importance of this component in the braking system, the investment may be worth it for those seeking long-term reliability and peace of mind.

2. Availability: Depending on your location and the availability of Honda dealers, it may take some time to obtain this part. If you need it urgently, consider contacting local Honda dealers or seeking alternative sources.

The Honda 45520-MA5-672 master cylinder reservoir diaphragm is a vital component for the proper functioning of the braking system in Honda VF100R motorcycles from 1989 to 1990. While it may be more expensive than aftermarket alternatives, its OEM quality ensures long-term reliability and a perfect fit. If you prioritize safety and performance, investing in this part is a wise decision.

If you own a Honda VF100R motorcycle from the specified period and are experiencing issues with your braking system, we recommend considering the purchase of the Honda 45520-MA5-672 master cylinder reservoir diaphragm as a replacement. By investing in a genuine OEM part, you can ensure optimal braking performance and long-term reliability.

part # 45520ma5672 prices

• $14.95-$53.99

specifications iodacarb:

• for models: Vf100r
• for makes: Honda
• machine type: Street Motorcycle
• items included: Master Cylinder Reservoir Diaphragm
• manufacturer part number: 45520-MA5-672
• material: Rubber
• vintage part: Yes
• california prop 65 warning: No Warranty
• type: Carburetor
• unit type: Unit
• universal fitment: No
• country of origin: Japan

seller iodacarb:

• # reviews: 1207
• rating: 100.0%

returns iodacarb:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

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• wallet: Apple-pay
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general iodacarb:

• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Carburetors
• condition: New other see details

shipping iodacarb:

• transit: 4-8 Days
• class: Standard
• cost: $0.00
• type: Calculated
• service: USPS Ground Advantage
• carrier: USPS

offer iodacarb:

• sold: 0
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• started: February 16, 2026

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