OE Quality
60-Day Returns

Dorman H621993 Brake Hydraulic Hose - Rear Center
Reliable Brake Hydraulic Hose for Ram 2500 and 3500
The Dorman H621993 brake hydraulic hose is designed to provide dependable brake fluid transfer for Ram 2500 and 3500 models. Engineered with durable materials, this flexible hose ensures consistent braking performance under various driving conditions.
- Compatible with Ram 2500 and Ram 3500 models
- Overall length of 23.74 inches for precise fitment
- Constructed with EPDM rubber hose material and a rubber outer sleeve
- Ends feature treated steel female fittings for secure connections
- Includes a protective jacket for added durability
Durable Construction and Design Features
This Dorman brake hydraulic hose (part number H621993) features a flexible EPDM rubber hose core that resists heat, ozone, and brake fluid degradation. The black rubber outer sleeve adds protection against abrasion and environmental exposure. Both ends of the hose are equipped with treated steel female fittings—one with a 3/8 in-24 thread diameter and the other with an M12 x 1.0 inside diameter—to ensure a secure and leak-free connection to the brake system. The included jacket enhances the hose’s resistance to wear and extends service life.
Applications and Common Issues Addressed
- Replacement for worn or cracked brake hydraulic hoses on Ram 2500 and 3500
- Solves brake fluid leaks caused by damaged or deteriorated hoses
- Restores proper brake pressure and pedal feel
- Prevents brake system failure due to hose rupture or swelling
- Maintains brake system integrity under high-pressure conditions
Installation Notes and Tips
When installing the Dorman H621993 brake hydraulic hose, ensure the vehicle is securely lifted and supported. Carefully remove the old hose without damaging surrounding components. Verify that the hose length and fitting types match the original equipment. Use appropriate brake fluid and bleed the brake system thoroughly after installation to remove air and ensure optimal brake performance. Note that mounting hardware and brackets are not included and should be reused if in good condition.
Quality Assurance and Warranty
Dorman manufactures this brake hydraulic hose to meet or exceed OEM specifications for fit, form, and function. The use of treated steel fittings and EPDM rubber materials ensures durability and resistance to common brake system contaminants. 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 | H621993 |
| Color | Black |
| Outer Sleeve Material | Rubber |
| Mounting Hardware Included | No |
| Bracket Included | No |
| Gasket Or Seal Included | No |
| End 1 Fitting Material | Treated steel |
| End 1 Fitting Type | Female |
| End 2 Fitting Material | Treated steel |
| End 2 Fitting Type | Female |
| Overall Length | 23.74 |
| Jacket Included | Yes |
| Describe Type | Flexible hose |
| End 1 Thread Diameter | 3/8 in-24 |
| End 2 Fitting Inside Diameter | M12 x 1.0 |
| Hose Material | Epdm rubber |
| Package Contents | 1 brake hose |
This part fits 9 vehicles. Search below:
| Year | Make | Model | Body Type | Position | Notes |
|---|---|---|---|---|---|
| 2013 | Ram | 2500 | Rear Center | ||
| 2013 | Ram | 3500 | Crew Cab Pickup | Rear Center | w/Electronic Stability Control |
| 2012 | Ram | 2500 | Rear Center | ||
| 2012 | Ram | 3500 | Standard Cab Pickup | Rear Center | w/Electronic Stability Control; 2 Required |
| 2012 | Ram | 3500 | Crew Cab Pickup | Rear Center | w/Electronic Stability Control; 2 Required |
| 2012 | Ram | 3500 | Extended Crew Cab Pickup | Rear Center | w/Electronic Stability Control; 2 Required |
| 2011 | Ram | 3500 | Standard Cab Pickup | Rear Center | w/Electronic Stability Control; 2 Required |
| 2011 | Ram | 3500 | Crew Cab Pickup | Rear Center | w/Electronic Stability Control; 2 Required |
| 2011 | Ram | 3500 | Extended Crew Cab Pickup | Rear Center | w/Electronic Stability Control; 2 Required |
* 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.