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Sunsong 3401421 Power Steering Pressure Line Hose Assembly
Power Steering Pressure Line Hose
The Sunsong 3401421 power steering pressure line hose assembly is built for direct replacement on select Ford and Mercury full-size sedans and wagons. It is engineered to restore steering system pressure delivery with the correct end fittings, hose length, and OE-style routing for a clean installation.
Fits 1990-1991 Ford LTD Crown Victoria, N/A. Fits 1990-1991 Mercury Colony Park, N/A. Fits 1990-1991 Mercury Grand Marquis, N/A.
Key Features
- Part number 3401421 power steering pressure line hose assembly
- End 1: 1/2 in. male inverted flare fitting
- End 2: 16 mm swivel O-ring fitting
- 25 in. hose length for the listed applications
- CSM hose material for fluid resistance and durability
- High-grade steel tubing with zinc electroplating for corrosion resistance
- Pressure-tested before shipment for quality verification
- Cross-reference: Dayco 71425 and Gates 359930
Detailed Description
Sunsong 3401421 is a power steering pressure line hose assembly for 1990-1991 Ford LTD Crown Victoria, 1990-1991 Mercury Colony Park, and 1990-1991 Mercury Grand Marquis. The hose is precision engineered to match the original fit and connection points, helping maintain proper steering pressure and reliable fluid transfer in the power steering system. The steel tubing is zinc coated to resist rust and corrosion from humidity, road salt, water, and grime, while the CSM hose section adds durability for long-term service.
This part cross-references Dayco 71425 and Gates 359930 for the same application. The Sunsong 3401421 is a direct-fit pressure hose solution for owners servicing a Ford LTD Crown Victoria or Mercury Grand Marquis power steering system and looking for an OE-style replacement with the correct fittings and dimensions.
What It Helps Address
- Power steering fluid leaks from a worn or damaged pressure hose
- Loss of steering assist caused by pressure line failure
- Corrosion-related hose deterioration on steel tubing sections
- Improper fitment from an incorrect replacement hose
- Noise or steering performance issues related to restricted fluid flow
Installation Notes and Tips
Verify the end fittings, hose length, and routing against the removed line before installation. Inspect mating surfaces, seals, and nearby steering components for wear or contamination, and confirm the system is properly bled after installation. This hose does not include a bracket or power steering switch port.
Quality Assurance
Each Sunsong pressure hose is subjected to a high-pressure quality test before leaving the factory. The assembly is built to exceed original equipment performance standards for pressure, burst resistance, and tensile strength, supporting dependable operation in the listed Ford and Mercury applications.
| Brand | Sunsong |
|---|---|
| Part Number | 3401421 |
| End 1 Fitting Size (in) | 1/2 |
| End 1 Fitting Type | Male Inverted Flare |
| End 2 Fitting Size (mm) | 16 |
| End 2 Fitting Type | Swivel O-Ring |
| Hose Material 1 | CSM |
| Length (in) | 25 |
| Length (mm) | 635 |
| Tech Tip | TT1000|TT1002 |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1991 | Ford | LTD Crown Victoria | N/A | |
| 1991 | Mercury | Colony Park | N/A | |
| 1991 | Mercury | Grand Marquis | N/A | |
| 1990 | Ford | LTD Crown Victoria | N/A | |
| 1990 | Mercury | Colony Park | N/A | |
| 1990 | Mercury | Grand Marquis | N/A |
* 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.