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SunsongPart #: 3402102
Sunsong 3402102 Power Steering Pressure Line Hose Assembly - Pump To Hydroboost
66 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet and GMC, C10, C10 Suburban, C1500, C1500 Suburban, C20, C20 Suburban, C2500, C2500 Suburban, C30, C3500, Jimmy, K10, K10 Suburban, K1500, K1500 Suburban, K20, K20 Suburban, K2500, K2500 Suburban, K30, K3500, and K5 Blazer
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Not what you need? See all Power Steering Pressure Line Hose Assembly options
Power Steering Pressure Line for Hydroboost
Sunsong 3402102 is a power steering pressure line hose assembly for hydroboost-equipped Chevrolet and GMC trucks and SUVs. It is built for direct replacement service on the pump-to-hydroboost circuit, with fitment covering 1975-1979 Chevrolet C10, C20, C30, K10, K20, K30, K5 Blazer, C10 Suburban, C20 Suburban, K10 Suburban, K20 Suburban, and 1977-1979 GMC Jimmy and related C/K models.
- Max working pressure: 1,500 psi
- Burst pressure rating: 8,700 psi
- Tensile strength: 1,600 lb
- 5/8 in. male inverted flare end 1
- 11/16 in. male inverted flare end 2
- 57.3 in. overall length
- CSM hose material
- High-grade steel tubing with zinc electroplating for corrosion resistance
- Precision-engineered replacement for the original pump-to-hydroboost line
Detailed Product Overview
This Sunsong power steering pressure line hose assembly, part number 3402102, is engineered for Chevrolet C10 and GMC Jimmy hydroboost applications where the pump-to-hydroboost pressure line must maintain stable steering assist and hydraulic flow. The hose construction is specified to exceed original equipment performance targets, and the steel tubing uses a zinc coating to resist rust from humidity, road salt, water, and grime. For restoration and repair work on classic Chevrolet and GMC steering systems, 3402102 provides the correct fitment profile for the listed hydroboost configurations.
This part cross-references Gates 366790 for the same application.
What It Helps Fix
- Power steering fluid leaks at the pressure line
- Cracked or fatigued hose material from age and heat
- Corrosion on steel tubing and fittings
- Loss of hydraulic pressure between the pump and hydroboost unit
- Steering assist issues caused by a damaged pressure hose
Installation Notes and Tips
- Verify hydroboost configuration before ordering; fitment is specific to pump-to-hydroboost applications.
- Confirm both end fitting sizes and types: 5/8 in. male inverted flare and 11/16 in. male inverted flare.
- Inspect mating ports, brackets, and surrounding lines for wear or corrosion before installation.
- Use the listed overall length, 57.3 in., to compare against the original routing on the vehicle.
- Follow factory service procedures for bleeding the power steering system after replacement.
Quality Assurance
Each hose is pressure tested before it leaves the factory to verify sealing and operation. Sunsong 3402102 is built to meet demanding replacement standards for classic Chevrolet and GMC hydroboost steering systems, including 1975-1979 Chevrolet C10, C20, C30, K10, K20, K30, K5 Blazer and 1977-1979 GMC Jimmy applications.
| Brand | Sunsong |
|---|---|
| Part Number | 3402102 |
| Bracket (Y/N) | N |
| End 1 Fitting Size (in) | 5/8 |
| End 1 Fitting Type | Male inverted flare |
| End 2 Fitting Size (in) | 11/16 |
| End 2 Fitting Type | Male inverted flare |
| Hose Material 1 | Csm |
| Length (in) | 57.3 |
| Length (mm) | 1455 |
| PS Switch Port (Y/N) | N |
| Tech Tip | Tt1000 |
This part fits 66 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1979 | Chevrolet | C10 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1979 | Chevrolet | C10 Suburban | Pump To Hydroboost | |
| 1979 | Chevrolet | C20 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1979 | Chevrolet | C20 Suburban | Pump To Hydroboost | |
| 1979 | Chevrolet | C30 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1979 | Chevrolet | K10 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1979 | Chevrolet | K10 Suburban | Pump To Hydroboost | |
| 1979 | Chevrolet | K20 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1979 | Chevrolet | K20 Suburban | Pump To Hydroboost | |
| 1979 | Chevrolet | K30 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1979 | Chevrolet | K5 Blazer | Pump To Hydroboost | |
| 1979 | GMC | C1500 | Pump To Hydroboost | |
| 1979 | GMC | C1500 Suburban | Pump To Hydroboost | |
| 1979 | GMC | C2500 | Pump To Hydroboost | |
| 1979 | GMC | C2500 Suburban | Pump To Hydroboost | |
| 1979 | GMC | C3500 | Pump To Hydroboost | |
| 1979 | GMC | Jimmy | Pump To Hydroboost | |
| 1979 | GMC | K1500 | Pump To Hydroboost | |
| 1979 | GMC | K1500 Suburban | Pump To Hydroboost | |
| 1979 | GMC | K2500 | Pump To Hydroboost | |
| 1979 | GMC | K2500 Suburban | Pump To Hydroboost | |
| 1979 | GMC | K3500 | Pump To Hydroboost | |
| 1978 | Chevrolet | C10 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1978 | Chevrolet | C10 Suburban | Pump To Hydroboost | |
| 1978 | Chevrolet | C20 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1978 | Chevrolet | C20 Suburban | Pump To Hydroboost | |
| 1978 | Chevrolet | C30 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1978 | Chevrolet | K10 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1978 | Chevrolet | K10 Suburban | Pump To Hydroboost | |
| 1978 | Chevrolet | K20 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1978 | Chevrolet | K20 Suburban | Pump To Hydroboost | |
| 1978 | Chevrolet | K30 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1978 | Chevrolet | K5 Blazer | Pump To Hydroboost | |
| 1978 | GMC | Jimmy | Pump To Hydroboost | |
| 1977 | Chevrolet | C10 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1977 | Chevrolet | C10 | Pump To Hydroboost | |
| 1977 | Chevrolet | C10 Suburban | Pump To Hydroboost | |
| 1977 | Chevrolet | C20 | Pump To Hydroboost | |
| 1977 | Chevrolet | C20 Suburban | Pump To Hydroboost | |
| 1977 | Chevrolet | C30 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1977 | Chevrolet | C30 | Pump To Hydroboost | |
| 1977 | Chevrolet | K10 | Pump To Hydroboost | |
| 1977 | Chevrolet | K10 Suburban | Pump To Hydroboost | |
| 1977 | Chevrolet | K20 | Pump To Hydroboost | |
| 1977 | Chevrolet | K20 Suburban | Pump To Hydroboost | |
| 1977 | Chevrolet | K30 | Pump To Hydroboost | |
| 1977 | Chevrolet | K5 Blazer | Pump To Hydroboost | |
| 1977 | GMC | Jimmy | Pump To Hydroboost | |
| 1976 | Chevrolet | C10 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1976 | Chevrolet | C10 Suburban | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1976 | Chevrolet | C20 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1976 | Chevrolet | C30 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1976 | Chevrolet | K10 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1976 | Chevrolet | K10 Suburban | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1976 | Chevrolet | K20 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1976 | Chevrolet | K5 Blazer | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1976 | GMC | Jimmy | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1975 | Chevrolet | C10 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1975 | Chevrolet | C10 Suburban | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1975 | Chevrolet | C20 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1975 | Chevrolet | C30 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1975 | Chevrolet | K10 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1975 | Chevrolet | K10 Suburban | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1975 | Chevrolet | K20 | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1975 | Chevrolet | K5 Blazer | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
| 1975 | GMC | Jimmy | Pump To Hydroboost | For vehicles with hydroboost systems, Power Steering Return Line End Fitting. |
* 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:
36-3667903667905513078185597819097783237991571979-4018
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.