OE Quality
60-Day Returns

Dorman H620521 Brake Hydraulic Hose - Front Left
Reliable Brake Hydraulic Hose for Infiniti 350Z and Nissan G35
The Dorman H620521 brake hydraulic hose is designed to provide dependable brake fluid transfer for your Infiniti 350Z or Nissan G35. Engineered with durable materials and precise fittings, this flexible brake hose ensures consistent braking performance under various driving conditions.
- Compatible with Infiniti 350Z and Nissan G35 models
- Flexible hose constructed from EPDM rubber for durability
- Black outer sleeve made of rubber for protection and flexibility
- Ends feature treated steel fittings: banjo type on one end and female on the other
- Includes necessary gaskets for secure installation
- Overall length approximately 10 inches with multiple axis length measurements for accurate fit
Durable Construction and Precise Fitment
This Dorman brake hydraulic hose (part number H620521) features a flexible EPDM rubber hose material that resists heat, ozone, and brake fluid degradation. The black rubber outer sleeve adds an extra layer of protection against abrasion and environmental factors. Both ends are equipped with treated steel fittings—one banjo fitting with a 10 mm thread diameter and one female fitting with an M10 x 1.0 inside diameter—ensuring a secure and leak-free connection. The hose’s multiple axis lengths (9, 11.5, and 10.13 inches) and overall length of 10 inches provide a precise fit for the brake system of Infiniti 350Z and Nissan G35 vehicles.
Applications and Problem Resolution
- Replaces worn or cracked brake hydraulic hoses causing fluid leaks
- Restores proper brake fluid flow for consistent braking response
- Eliminates brake pedal sponginess due to hose expansion or damage
- Prevents brake system failure from deteriorated or damaged hoses
- Ensures compatibility with OEM brake system components on Infiniti 350Z and Nissan G35
Installation Notes and Tips
Installation of the Dorman H620521 brake hydraulic hose requires basic mechanical skills and proper tools. Ensure the brake system is depressurized before removal. Use the included gaskets to maintain a secure seal at the fittings. Avoid twisting or kinking the hose during installation to preserve hose integrity. After installation, bleed the brake system thoroughly to remove air and verify proper brake function before driving.
Quality Assurance and Warranty
Dorman manufactures this brake hydraulic hose to meet or exceed OEM specifications for fit, form, and function. The treated steel fittings and EPDM rubber hose material are selected for durability and resistance to brake fluid and environmental exposure. This part includes gaskets to ensure a reliable seal. While specific warranty details are not provided, Dorman products typically come with a limited warranty covering defects in materials and workmanship.
| Brand | Dorman |
| Part Number | H620521 |
| Axis 1 Length | 9 |
| Axis 2 Length | 11.5 |
| Axis 3 Length | 10.13 |
| 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 | 10 |
| Package Contents | 1 Brake Hose; Gaskets |
| Total Length 2 (In) | 12.5 in |
| Total Length 3 (In) | 10.75 in |
This part fits 31 vehicles. Search below:
| Year | Make | Model | Submodel | Body Type | Drive Type | Transmission | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2009 | Nissan | 350Z | Touring | Front Left | ||||
| 2009 | Nissan | 350Z | Enthusiast | Front Left | ||||
| 2008 | Nissan | 350Z | Touring | Front Left | ||||
| 2008 | Nissan | 350Z | Enthusiast | Front Left | ||||
| 2007 | INFINITI | G35 | Coupe | Front Left | ||||
| 2007 | Nissan | 350Z | Touring | Front Left | ||||
| 2007 | Nissan | 350Z | Enthusiast | Front Left | ||||
| 2006 | INFINITI | G35 | Sedan | RWD | Front Left | |||
| 2006 | INFINITI | G35 | Coupe | Front Left | ||||
| 2006 | Nissan | 350Z | Base | Front Left | ||||
| 2006 | Nissan | 350Z | Touring | Front Left | ||||
| 2006 | Nissan | 350Z | Enthusiast | Front Left | ||||
| 2005 | INFINITI | G35 | Sedan | RWD | Front Left | |||
| 2005 | INFINITI | G35 | Coupe | Automatic | Front Left | |||
| 2005 | Nissan | 350Z | Base | Front Left | ||||
| 2005 | Nissan | 350Z | 35th Anniversary Edition | Front Left | ||||
| 2005 | Nissan | 350Z | Touring | Front Left | ||||
| 2005 | Nissan | 350Z | Enthusiast | Front Left | ||||
| 2005 | Nissan | 350Z | Performance | Front Left | ||||
| 2004 | INFINITI | G35 | Sedan | RWD | Front Left | |||
| 2004 | INFINITI | G35 | Coupe | Automatic | Front Left | |||
| 2004 | Nissan | 350Z | Base | Front Left | ||||
| 2004 | Nissan | 350Z | Touring | Front Left | ||||
| 2004 | Nissan | 350Z | Enthusiast | Front Left | ||||
| 2004 | Nissan | 350Z | Performance | Front Left | ||||
| 2003 | INFINITI | G35 | Sedan | Front Left | ||||
| 2003 | INFINITI | G35 | Coupe | Automatic | Front Left | |||
| 2003 | Nissan | 350Z | Base | Front Left | ||||
| 2003 | Nissan | 350Z | Touring | Front Left | ||||
| 2003 | Nissan | 350Z | Enthusiast | Front Left | ||||
| 2003 | Nissan | 350Z | Performance | 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.