Shimano Dura-Ace ST-R9170 Bleed Screw & O-Ring
The Shimano ST-R9170 Bleed Screw & O-Ring is a genuine replacement service part for the Shimano Dura-Ace ST-R9170 hydraulic disc brake Dual Control Lever. It seals the lever's hydraulic bleed port and is used when servicing or bleeding the hydraulic braking system.
Shimano's exploded parts diagram identifies the complete Bleed Screw & O-Ring assembly as Y0C698030.
Key Features
- Genuine Shimano replacement component
- Specifically designed for ST-R9170 Dura-Ace hydraulic Dual Control Levers
- Includes the bleed screw and O-ring
- Provides a secure seal at the hydraulic bleed port
- Useful when servicing or bleeding Shimano hydraulic road brakes
- Helps prevent mineral-oil leakage from the bleed port
- Compact replacement part ideal for workshop servicing
Specifications
| Specification |
Details |
| Brand |
Shimano |
| Series |
Dura-Ace |
| Compatible Lever |
ST-R9170 |
| Part Number |
Y0C698030 |
| Component |
Bleed Screw & O-Ring |
| Application |
Hydraulic disc brake Dual Control Lever |
| Position |
Brake lever bleed port |
| Brake Fluid |
Shimano Mineral Oil |
| Type |
Genuine replacement/service part |
Shimano's ST-R9170 exploded view lists Y0C698030 as item 2, specifically as the Bleed Screw & O-Ring.
Compatibility
The Y0C698030 assembly is intended for the ST-R9170 Dura-Ace 11-speed hydraulic disc brake Dual Control Lever. It should not be confused with the separate bleed nipple and O-ring used on Shimano brake calipers.
Important: The bleed screw/O-ring for the lever is different from the caliper bleed nipple/O-ring. Shimano lists the caliper bleed nipple and seal components separately.
Best Suited For
- Shimano Dura-Ace ST-R9170 servicing
- Hydraulic brake bleeding
- Replacing a damaged or missing bleed screw
- Replacing a leaking bleed-port O-ring
- Bicycle workshop repairs and maintenance
