OE Quality
60-Day Returns

Sunsong 3402258 Power Steering Pressure Line Hose Assembly - Pump To Hydroboost
Power Steering Pressure Line Hose Assembly Overview
The Sunsong 3402258 power steering pressure line hose assembly is designed for reliable hydraulic fluid transfer in select Chevrolet and GMC vehicles. Engineered to meet OEM specifications, this hose assembly ensures consistent steering performance for models like the Chevrolet Express 1500 and GMC Savana 3500.
- Compatible with Chevrolet Express 1500, 2500, 3500 and GMC Savana 1500, 2500, 3500, Silverado 2500
- Length: 59.2 inches (1504 mm) for precise fitment
- End fittings: Male o-ring type, 16 mm on one end and 18 mm on the other
- Constructed with durable CSM hose material for resistance to heat and pressure
- Includes power steering switch port for integration with vehicle systems
Detailed Product Description
The Sunsong 3402258 power steering pressure line hose assembly is built to maintain hydraulic pressure within the power steering system of compatible Chevrolet and GMC trucks and vans. Its 59.2-inch length and dual male o-ring fittings (16 mm and 18 mm) provide a secure, leak-resistant connection between the power steering pump and steering gear. The hose material, chlorosulfonated polyethylene (CSM), offers enhanced durability against heat, abrasion, and chemical exposure, which is critical for maintaining system integrity under demanding driving conditions. Additionally, the integrated power steering switch port allows for proper sensor function and system monitoring.
Common Applications and Issues Addressed
- Replacement for worn or leaking power steering pressure hoses
- Restores proper hydraulic pressure to improve steering response
- Eliminates fluid leaks that can cause steering system damage
- Prevents hose failure due to heat and abrasion in Chevrolet Express and GMC Savana models
- Ensures compatibility with power steering switch sensors for accurate system feedback
Installation Notes and Tips
- Verify hose length and fitting sizes (16 mm and 18 mm male o-ring) before installation
- Ensure the power steering switch port is properly connected to maintain sensor functionality
- Follow vehicle manufacturer torque specifications for fittings to prevent leaks
- Inspect surrounding components for wear or damage during installation
- Bleed the power steering system after installation to remove air and ensure optimal performance
Quality Assurance and Warranty
Sunsong power steering hoses are manufactured to meet or exceed OEM standards for durability and performance. The 3402258 hose assembly undergoes rigorous testing to ensure resistance to pressure, heat, and chemical exposure. While specific warranty details may vary, Sunsong products typically include coverage against defects in materials and workmanship. Consult product documentation or your supplier for exact warranty terms.
| Brand | Sunsong |
|---|---|
| Part Number | 3402258 |
| End 1 Fitting Size (mm) | 16 |
| End 1 Fitting Type | Male O-Ring |
| End 2 Fitting Size (mm) | 18 |
| End 2 Fitting Type | Male O-Ring |
| Hose Material 1 | CSM |
| Length (in) | 59.2 |
| Length (mm) | 1504 |
| PS Switch Port (Y/N) | Y |
| Tech Tip | TT1000|TT1001|TT1004|TT1008 |
This part fits 19 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2005 | Chevrolet | Express 1500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2005 | Chevrolet | Express 2500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2005 | Chevrolet | Express 3500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2005 | Chevrolet | Silverado 2500 | Pump To Hydroboost | |
| 2005 | GMC | Savana 1500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2005 | GMC | Savana 2500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2005 | GMC | Savana 3500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2004 | Chevrolet | Express 1500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2004 | Chevrolet | Express 2500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2004 | Chevrolet | Express 3500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2004 | GMC | Savana 1500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2004 | GMC | Savana 2500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2004 | GMC | Savana 3500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2003 | Chevrolet | Express 1500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2003 | Chevrolet | Express 2500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2003 | Chevrolet | Express 3500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2003 | GMC | Savana 1500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2003 | GMC | Savana 2500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
| 2003 | GMC | Savana 3500 | Pump To Hydroboost | w/ Hydroboost, w/ Switchport |
* 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.