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Sunsong 3401970 Power Steering Pressure Line Hose Assembly - From Pump
| Brand | Sunsong 3401970 |
|---|---|
| Position | From Pump |
| Bracket (Y/N) | N |
| End 1 Fitting Size (in) | 5/8 |
| End 1 Fitting Type | Female |
| End 2 Fitting Size (in) | 5/8 |
| End 2 Fitting Type | Female |
| Hose Material 1 | Csm |
| Length (in) | 50.4 |
| Length (mm) | 1280 |
| PS Switch Port (Y/N) | N |
| Tech Tip | Tt1000 |
| Fits | Ford and Mercury · 13 vehicles |
Exact-fit design. Precision engineered for original-condition restoration and trouble-free installation.
Zinc-coated steel tubing. Helps resist corrosion and rust from humidity, road salt, water, and grime.
Pressure-tested hose. Built to exceed OE performance standards with strong working and burst pressure ratings.
Cross-references Dayco 70680, Gates 353990 and Hastings Piston Rings 656 for the same application. See all 42.
Power Steering Pressure Line for Ford and Mercury
Sunsong 3401970 is a power steering pressure line hose assembly built for select Ford Pinto, Ford Mustang, and Mercury Bobcat applications. It is engineered to restore steering system pressure delivery with OE-style fitment and durable hose construction.
Key Features
- Max working pressure: 1,500 psi
- Burst pressure rating: 8,700 psi
- Tensile strength: 1,600 lb
- 5/8 in. female fittings at both ends
- 50.4 in. hose length for the listed applications
- CSM hose material for steering system service
- High-grade steel tubing with zinc electroplating for corrosion resistance
- High-pressure tested before leaving the factory
Detailed Description
This Sunsong power steering pressure line hose assembly, part number 3401970, is built to meet the demands of steering systems that require stable hydraulic pressure and reliable routing. The hose is precision engineered for exact fit on listed Ford and Mercury applications, including 1975-1977 Ford Pinto, 1973 Ford Mustang, and 1975-1977 Mercury Bobcat. It also cross-references Gates 353990 for the same application. The steel tubing is zinc coated to help resist rust and corrosion from humidity, road salt, water, and grime, while the hose assembly is factory tested for pressure integrity before shipment.
Vehicle Fitment
- Fits 1975-1977 Ford Pinto, N/A
- Fits 1973 Ford Mustang, N/A
- Fits 1973 Ford Mustang, From Pump
- Fits 1975-1976 Mercury Bobcat, N/A
- Fits 1977 Mercury Bobcat, N/A, to 6/1, w/ Flared Fitting
- Fits 1977 Mercury Bobcat, N/A, to 7/5, w/ Flared Fitting
What It Helps Address
- Power steering fluid leaks from a worn or damaged pressure line
- Loss of steering assist caused by pressure loss in the hydraulic circuit
- Noise or erratic steering feel related to hose deterioration
- Corrosion-related failure in steel steering line sections
- Fitment issues when replacing an original pressure hose assembly
Installation Notes and Tips
Confirm end fitting size and type before installation: both ends use 5/8 in. female fittings. Verify the vehicle build date and note details for 1977 Mercury Bobcat applications, which vary by date and flared fitting configuration. This part number 3401970 is listed for N/A positions and a From Pump application on the 1973 Ford Mustang.
Quality Assurance
Sunsong subjects each hose to high-pressure testing before it leaves 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 Mustang, Ford Pinto, and Mercury Bobcat applications.
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 1977 | Ford | Mustang II | — | N/A | To 7/5 |
| 1977 | Ford | Pinto | — | N/A | — |
| 1977 | Mercury | Bobcat | — | N/A | To 6/1, w/ Flared Fitting |
| 1977 | Mercury | Bobcat | — | N/A | To 7/5, w/ Flared Fitting |
| 1976 | Ford | Mustang II | — | N/A | — |
| 1976 | Ford | Pinto | — | N/A | — |
| 1976 | Mercury | Bobcat | — | N/A | — |
| 1975 | Ford | Mustang II | — | N/A | — |
| 1975 | Ford | Pinto | — | N/A | — |
| 1975 | Mercury | Bobcat | Base | N/A | — |
| 1974 | Ford | Mustang II | — | N/A | — |
| 1973 | Ford | Mustang | — | N/A | — |
| 1973 | Ford | Mustang | — | From Pump | — |
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