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Dorman H621057 Brake Hydraulic Hose - Front Left
Reliable Brake Hydraulic Hose for Lexus GS300
The Dorman H621057 brake hydraulic hose is designed specifically for the Lexus GS300, providing a durable and flexible connection within the brake system. Engineered with quality materials, this hose ensures consistent brake fluid flow and reliable performance under various driving conditions.
- Compatible with Lexus GS300 models
- Flexible EPDM rubber hose with black outer sleeve
- Overall length of 15.5 inches with 12.75-inch axis length
- Treated steel fittings: banjo fitting on one end and female fitting on the other
- Includes gaskets for secure sealing; mounting hardware and brackets not included
Durable Construction and Design Features
The Dorman H621057 brake hydraulic hose features a flexible EPDM rubber hose material that resists heat, ozone, and brake fluid degradation. The black rubber outer sleeve adds protection against abrasion and environmental factors. Both ends of the hose are equipped with treated steel fittings—one banjo type with a 10 mm thread diameter and one female fitting with an M10 x 1.0 inside diameter—ensuring a secure and leak-resistant connection. The included gaskets help maintain a tight seal during installation. With an overall length of 15.5 inches and an axis length of 12.75 inches, this hose fits precisely within the brake system of the Lexus GS300.
Common Applications and Problem Resolution
- Replacement for worn or cracked brake hydraulic hoses on Lexus GS300
- Addresses brake fluid leaks caused by damaged or deteriorated hoses
- Restores proper brake fluid pressure and pedal feel
- Prevents brake system failure due to hose rupture or leaks
- Ensures safe and reliable braking performance
Installation Notes and Tips
When installing the Dorman H621057 brake hydraulic hose, ensure the vehicle is securely lifted and supported. Carefully remove the old hose, taking care to avoid brake fluid spills. Use the included gaskets to create a proper seal at both fittings. Since mounting hardware and brackets are not included, reuse the existing components if they are in good condition or source replacements as needed. After installation, bleed the brake system thoroughly to remove any air and verify there are no leaks before driving.
Quality Assurance and Warranty Information
Dorman manufactures the H621057 brake hydraulic hose to meet or exceed OEM specifications for fit, form, and function. The use of treated steel fittings and EPDM rubber hose material ensures durability and resistance to common brake system stresses. This part includes gaskets for proper sealing and is backed by Dorman's quality standards. Please refer to Dorman's official warranty policy for specific coverage details.
| Brand | Dorman |
| Part Number | H621057 |
| Axis 1 Length | 12.75 |
| Bracket Included | No |
| Color | Black |
| Describe Type | Flexible Hose |
| End 1 Fitting Material | Treated Steel |
| End 1 Fitting Type | Banjo |
| End 1 Thread Diameter | 10 mm |
| End 2 Fitting Inside Diameter | M10 X 1.0 |
| End 2 Fitting Material | Treated Steel |
| End 2 Fitting Type | Female |
| Gasket Or Seal Included | Yes |
| Hose Material | EPDM Rubber |
| Jacket Included | No |
| Mounting Hardware Included | No |
| Outer Sleeve Material | Rubber |
| Overall Length | 15.5 |
| Package Contents | 1 Brake Hose; Gaskets |
This part fits 1 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 2006 | Lexus | GS300 | AWD | Front Left |
* 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.