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Sunsong 3401578 Power Steering Pressure Line Hose Assembly
| Brand | Sunsong 3401578 |
|---|---|
| Bracket (Y/N) | N |
| 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) | 45.5 |
| Length (mm) | 1155 |
| PS Switch Port (Y/N) | N |
| Tech Tip | Tt1000|tt1001 |
| Fits | Chevrolet and GMC · 8 vehicles |
Exact-fit assembly. Precision engineered for a trouble-free installation and original-condition restoration.
High-pressure rated. Built to handle 1,500 psi working pressure and 8,700 psi burst pressure.
Corrosion resistant. Zinc-coated steel tubing helps resist rust from humidity, road salt, water, and grime.
Cross-references AP Exhaust 30039, Focus Auto Parts 92020 and Gates 365620 for the same application. See all 6.
Sunsong 3401578 Power Steering Pressure Hose
The Sunsong 3401578 power steering pressure line hose assembly is built for direct replacement on select Chevrolet Express and GMC Savana vans. It is engineered to handle high steering-system pressure while maintaining a precise OE-style fit for dependable fluid transfer.
- Max working pressure: 1,500 psi
- Burst pressure rating: 8,700 psi
- Tensile strength: 1,600 lb
- High-grade steel tubing with zinc electroplating for corrosion resistance
- Precision-engineered hose assembly for exact fit
- Male O-ring fittings: 16 mm end 1 and 18 mm end 2
- 45.5 in. overall length
- CSM hose material
Fitment Details
Compatible with 1997-1998 Chevrolet Express 1500, N/A; 1997-1998 Chevrolet Express 2500, N/A; 1997-1998 GMC Savana 1500, N/A; and 1997-1998 GMC Savana 2500, N/A. For Chevrolet Express 1500 and Chevrolet Express 2500 applications, exclude vehicles equipped with Hydroboost.
This part cross-references Gates 365620 for the same application.
Built for Steering System Performance
As a pressure hose assembly, this part routes power steering fluid between system components under demanding operating conditions. The Sunsong 3401578 is made to restore proper hydraulic flow on Chevrolet Express and GMC Savana vans while resisting corrosion from humidity, road salt, water, and grime. Its steel tubing, zinc coating, and precision fit help support long-term service in daily-use vehicles.
Common Problems This Part Can Address
- Power steering fluid leaks from a worn or damaged pressure line
- Loss of steering assist caused by pressure loss in the hydraulic circuit
- Corrosion-related hose failure on high-mileage vans
- Noise or erratic steering feel linked to restricted fluid transfer
- Fitment issues when replacing a deteriorated OE-style hose assembly
Installation Notes and Tips
Verify end fitting sizes, hose length, and routing before installation. Confirm the vehicle is not equipped with Hydroboost on 1997-1998 Chevrolet Express 1500 and Express 2500 models. Inspect mating seals, brackets, and surrounding steering components for wear before completing the repair. Proper routing and secure connection at both male O-ring ends are important for leak-free operation.
Quality Assurance
Each Sunsong pressure hose is high-pressure tested before it leaves the factory to help ensure consistent performance and trouble-free installation. The 3401578 is engineered to meet or exceed original equipment performance standards for pressure capacity and durability.
| Year | Make | Model | Notes |
|---|---|---|---|
| 1998 | Chevrolet | Express 1500 | Exclude fitment for vehicles equipped with Hydroboost. |
| 1998 | Chevrolet | Express 2500 | Exclude fitment for vehicles equipped with Hydroboost. |
| 1998 | GMC | Savana 1500 | — |
| 1998 | GMC | Savana 2500 | — |
| 1997 | Chevrolet | Express 1500 | Exclude fitment for vehicles equipped with Hydroboost. |
| 1997 | Chevrolet | Express 2500 | Exclude fitment for vehicles equipped with Hydroboost. |
| 1997 | GMC | Savana 1500 | — |
| 1997 | GMC | Savana 2500 | — |
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