Sunsong 3401750 Power Steering Pressure Line Hose Assembly

Brand Sunsong 3401750
Bracket (Y/N) N
End 1 Fitting Size (in) 11/16
End 1 Fitting Type Male inverted flare
End 2 Fitting Size (in) 5/8
End 2 Fitting Type Male inverted flare
Hose Material 1 Csm
Length (in) 29.8
Length (mm) 756
PS Switch Port (Y/N) N
Tech Tip Tt1000
Fits Buick, Chevrolet, Jeep, Oldsmobile, and Pontiac · 128 vehicles

Exact-fit assembly. Precision engineered for a direct replacement and trouble-free installation.

Zinc-coated steel tubing. Helps resist corrosion from humidity, road salt, water, and grime.

Pressure-tested hose. Built to exceed OE performance standards for durable, long service life.

Cross-references Eastern Catalytic 70247, Gates 355360 and Hayden 5073 for the same application. See all 8.

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Power Steering Pressure Line Hose for Classic GM Fitments

Sunsong 3401750 is a power steering pressure line hose assembly built for select classic Buick, Chevrolet, Oldsmobile, Pontiac, and Jeep applications. It is engineered to match original routing and connection points for a direct replacement on vehicles such as the Pontiac LeMans, Chevrolet Malibu, and Oldsmobile Cutlass.

Key Features

  • Pressure hose assembly with 11/16 in. male inverted flare end and 5/8 in. male inverted flare end
  • 29.8 in. overall length for the listed steering applications
  • CSM hose material for durability in power steering service
  • High-grade steel tubing with zinc electroplating for corrosion and rust resistance
  • Rated for 1,500 psi maximum working pressure, 8,700 psi burst pressure, and 1,600 lb tensile strength
  • Precision-engineered to original fit requirements for the listed vehicles
  • Each hose is pressure tested before leaving the factory

Detailed Description

This Sunsong power steering pressure line hose assembly, part number 3401750, is built for direct replacement on a wide range of older rear-wheel-drive and intermediate GM platforms, plus select Jeep Wagoneer applications. It is made to restore proper hydraulic steering fluid transfer between the pump and steering gear, with exact-fit dimensions and OE-style flare fittings for the specified vehicles. The steel tubing is zinc-coated to help resist road salt, moisture, grime, and humidity, while the hose construction is rated above original equipment performance standards for pressure and tensile strength.

This part cross-references Gates 355360 and Hayden 5073 for the same application. Common search terms for this part include power steering pressure hose for 1977-1979 Pontiac LeMans, 1978-1979 Chevrolet Malibu power steering hose, and 1977-1980 Buick LeSabre steering pressure line. Sunsong 3401750 also serves fitments across Buick Riviera, Oldsmobile Toronado, Pontiac Grand Prix, and Chevrolet Caprice applications listed below.

What It Helps Address

  • Power steering fluid leaks at the pressure line
  • Hard steering caused by a failing or restricted hose
  • Cracked, corroded, or rusted steel tubing
  • Incorrect hose length or flare fitting mismatch during replacement
  • Loss of hydraulic pressure in the steering system

Installation Notes and Fitment

Compatible With the following applications:

  • Fits 1977-1980 Buick LeSabre, N/A, w/ Flared Fitting, w/o Air Pump
  • Fits 1977-1979 Buick Skylark, N/A, w/ Flared Fitting, w/o Air Pump
  • Fits 1973-1976 Buick Riviera, N/A
  • Fits 1980 Chevrolet Caprice, N/A, w/ California Emissions, w/ Flared Fitting, w/o Air Pump
  • Fits 1978-1979 Chevrolet Caprice, N/A, w/o Air Pump
  • Fits 1978-1980 Chevrolet El Camino, N/A, w/ Flared Fitting, w/o Air Pump
  • Fits 1978-1979 Chevrolet Impala, N/A, w/o Air Pump
  • Fits 1978-1979 Chevrolet Malibu, N/A, w/o Air Pump
  • Fits 1980 Chevrolet Malibu, N/A, w/ California Emissions, w/ Flared Fitting, w/o Air Pump
  • Fits 1978-1979 Chevrolet Monte Carlo, N/A, w/o Air Pump
  • Fits 1980 Chevrolet Monte Carlo, N/A, w/ California Emissions, w/ Flared Fitting, w/o Air Pump
  • Fits 1970-1971 Jeep Wagoneer, N/A, w/o Restrictor
  • Fits 1977-1980 Oldsmobile Cutlass, N/A, w/ Flared Fitting, w/o Air Pump
  • Fits 1978-1979 Oldsmobile Cutlass Calais, N/A, w/o Air Pump
  • Fits 1980 Oldsmobile Cutlass Calais, N/A, w/ Flared Fitting, w/o Air Pump
  • Fits 1978-1979 Oldsmobile Cutlass Cruiser, N/A
  • Fits 1980 Oldsmobile Cutlass Cruiser, N/A, w/ Flared Fitting, w/o Air Pump
  • Fits 1978-1979 Oldsmobile Cutlass Salon, N/A, w/o Air Pump
  • Fits 1980 Oldsmobile Cutlass Salon, N/A, w/ Flared Fitting, w/o Air Pump
  • Fits 1977-1979 Oldsmobile Cutlass Supreme, N/A, w/o Air Pump
  • Fits 1980 Oldsmobile Cutlass Supreme, N/A, w/ Flared Fitting, w/o Air Pump
  • Fits 1977-1979 Oldsmobile Delta 88, N/A, w/o Air Pump
  • Fits 1980 Oldsmobile Delta 88, N/A, w/ Flared Fitting, w/o Air Pump
  • Fits 1977-1979 Oldsmobile Omega, N/A, w/o Air Pump
  • Fits 1977-1979 Pontiac Catalina, N/A, w/o Air Pump
  • Fits 1977 Pontiac Catalina, N/A, Exc. Air Pump
  • Fits 1977 Pontiac Catalina, N/A, Exc. Air Pump, OEM Design
  • Fits 1980 Pontiac Catalina, N/A, Exc. Air Pump, w/ Flared Fitting
  • Fits 1980 Pontiac Catalina, N/A, w/ Flared Fitting, w/o Air Pump
  • Fits 1977-1979 Pontiac Firebird, N/A, w/o Air Pump
  • Fits 1979 Pontiac Grand Am, N/A, w/o Air Pump
  • Fits 1977-1979 Pontiac Grand LeMans, N/A, w/o Air Pump
  • Fits 1977-1978 Pontiac Grand LeMans, N/A, Exc. Air Pump, OEM Design
  • Fits 1978-1979 Pontiac Grand Prix, N/A, w/o Air Pump
  • Fits 1980 Pontiac Grand Prix, N/A, w/ Flared Fitting, w/o Air Pump
  • Fits 1978-1979 Pontiac Laurentian, N/A, Exc. Air Pump
  • Fits 1969 Pontiac LeMans, N/A
  • Fits 1977-1979 Pontiac LeMans, N/A, Exc. Air Pump, OEM Design
  • Fits 1977-1979 Pontiac LeMans, N/A, w/o Air Pump
  • Fits 1977 Pontiac LeMans, N/A, Exc. Air Pump
  • Fits 1979 Pontiac LeMans, N/A, Exc. Air Pump
  • Fits 1978-1979 Pontiac Parisienne, N/A, Exc. Air Pump
  • Fits 1969 Pontiac Tempest, N/A
  • Fits 1968-1970 Oldsmobile Toronado, N/A

Before installation, verify flare fitting size, hose routing, and air pump/emissions configuration against the vehicle listing. The hose is not listed with a bracket or PS switch port, so confirm the original mounting and port requirements before ordering. For classic GM steering repairs, Sunsong 3401750 is a direct-fit pressure line option for the specified applications.

Quality Assurance

Each hose is pressure tested at the factory before shipment. Sunsong also specifies high working-pressure, burst-pressure, and tensile-strength targets for this assembly, along with corrosion-resistant steel tubing to support long service life in demanding steering systems.

This part fits 128 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelBody TypeNotes
1980BuickLeSabreLimited—w/ Flared Fitting, w/o Air Pump
1980BuickLeSabreBase—w/ Flared Fitting, w/o Air Pump
1980ChevroletCaprice——w/ California Emissions, w/ Flared Fitting, w/o Air Pump
1980ChevroletEl Camino——w/ California Emissions, w/ Flared Fitting, w/o Air Pump
1980ChevroletImpala——w/ California Emissions, w/ Flared Fitting, w/o Air Pump
1980ChevroletMalibu——w/ California Emissions, w/ Flared Fitting, w/o Air Pump
1980ChevroletMonte Carlo——w/ California Emissions, w/ Flared Fitting, w/o Air Pump
1980GMCCaballero——w/ Flared Fitting, w/ California Emissions (w/o Air Pump)
1980OldsmobileCutlass——w/ Flared Fitting, w/o Air Pump
1980OldsmobileCutlass CalaisBase—w/ Flared Fitting, w/o Air Pump
1980OldsmobileCutlass Cruiser——w/ Flared Fitting, w/o Air Pump
1980OldsmobileCutlass Salon——w/ Flared Fitting, w/o Air Pump
1980OldsmobileCutlass Supreme——w/ Flared Fitting, w/o Air Pump
1980OldsmobileDelta 88——w/ Flared Fitting, w/o Air Pump
1980PontiacBonneville——w/ Flared Fitting, w/o Air Pump
1980PontiacCatalina——w/ Flared Fitting, w/o Air Pump
1980PontiacCatalina——Exc. Air Pump, w/ Flared Fitting
1980PontiacGrand Prix——w/ Flared Fitting, w/o Air Pump
1979BuickLeSabreLimited—w/ Flared Fitting, w/o Air Pump
1979BuickLeSabreBase—w/ Flared Fitting, w/o Air Pump
1979BuickSkylark——w/ Flared Fitting, w/o Air Pump
1979ChevroletCaprice——w/o Air Pump
1979ChevroletEl Camino——w/ Flared Fitting, w/o Air Pump
1979ChevroletImpala——w/o Air Pump
1979ChevroletMalibu——w/o Air Pump
1979ChevroletMonte Carlo——w/o Air Pump
1979GMCCaballero——w/ Flared Fitting, w/o Air Pump
1979OldsmobileCutlass CalaisBaseCoupew/o Air Pump
1979OldsmobileCutlass SalonBroughamSedanw/o Air Pump
1979OldsmobileCutlass SalonBroughamCoupew/o Air Pump
1979OldsmobileCutlass SalonBaseSedanw/o Air Pump
1979OldsmobileCutlass SalonBaseCoupew/o Air Pump
1979OldsmobileCutlass Supreme——w/o Air Pump
1979OldsmobileDelta 88——w/o Air Pump
1979OldsmobileOmega——w/o Air Pump
1979PontiacCatalina——w/o Air Pump
1979PontiacFirebird——w/o Air Pump
1979PontiacGrand Am—Sedanw/o Air Pump
1979PontiacGrand Am—Coupew/o Air Pump
1979PontiacGrand LeMans—Sedanw/o Air Pump
1979PontiacGrand Prix——w/o Air Pump
1979PontiacLaurentian——Exc. Air Pump
1979PontiacLeMans——Exc. Air Pump, OEM Design
1979PontiacLeMans—Sedanw/o Air Pump
1979PontiacLeMans—SedanExc. Air Pump
1979PontiacLeMans—Coupew/o Air Pump
1979PontiacLeMans—CoupeExc. Air Pump
1979PontiacParisienne——Exc. Air Pump
1978BuickLeSabreCustom—w/ Flared Fitting, w/o Air Pump
1978BuickLeSabreBase—w/ Flared Fitting, w/o Air Pump
1978BuickSkylark——w/ Flared Fitting, w/o Air Pump
1978ChevroletCaprice——w/o Air Pump
1978ChevroletEl Camino——w/o Air Pump
1978ChevroletEl Camino———
1978ChevroletImpala——w/o Air Pump
1978ChevroletMalibu——w/o Air Pump
1978ChevroletMalibu———
1978ChevroletMonte Carlo——w/o Air Pump
1978GMCCaballero——w/o Air Pump
1978GMCCaballero———
1978OldsmobileCutlassVista Cruiser—w/o Air Pump
1978OldsmobileCutlass CalaisBase—w/o Air Pump
1978OldsmobileCutlass Salon——w/o Air Pump
1978OldsmobileCutlass Supreme——w/o Air Pump
1978OldsmobileDelta 88——w/o Air Pump
1978OldsmobileOmega——w/o Air Pump
1978PontiacCatalina——w/o Air Pump
1978PontiacFirebird——w/o Air Pump
1978PontiacGrand LeMans——w/o Air Pump
1978PontiacGrand LeMans——Exc. Air Pump, OEM Design
1978PontiacGrand Prix——w/o Air Pump
1978PontiacLaurentian——Exc. Air Pump
1978PontiacLeMans——w/o Air Pump
1978PontiacLeMans——Exc. Air Pump, OEM Design
1978PontiacParisienne——Exc. Air Pump
1977BuickLeSabreCustom—w/ Flared Fitting, w/o Air Pump
1977BuickLeSabreBase—w/ Flared Fitting, w/o Air Pump
1977BuickSkylark——w/ Flared Fitting, w/o Air Pump
1977OldsmobileCutlass——w/o Air Pump
1977OldsmobileCutlass Supreme——w/o Air Pump
1977OldsmobileDelta 88Royale—w/o Air Pump
1977OldsmobileDelta 88Base—w/o Air Pump
1977OldsmobileOmega———
1977OldsmobileOmega——w/o Air Pump
1977PontiacCatalina——Exc. Air Pump
1977PontiacCatalina——w/o Air Pump
1977PontiacCatalina——Exc. Air Pump, OEM Design
1977PontiacFirebird——w/o Air Pump
1977PontiacGrand LeMans——Exc. Air Pump
1977PontiacGrand LeMans——w/o Air Pump
1977PontiacGrand LeMans——Exc. Air Pump, OEM Design
1977PontiacLeMans——Exc. Air Pump
1977PontiacLeMans——w/o Air Pump
1977PontiacLeMans——Exc. Air Pump, OEM Design
1976BuickRiviera———
1975BuickRiviera———
1974BuickRivieraBase——
1973BuickRivieraBase——
1971JeepJ-100Base—w/o Restrictor
1971JeepJ-2500Base—w/o Restrictor
1971JeepJ-2600———
1971JeepJ-3800Base—w/o Restrictor
1971JeepJ-4500Base—w/o Restrictor
1971JeepJ-4600Base—w/o Restrictor
1971JeepJ-4700Base—w/o Restrictor
1971JeepJ-4800Base—w/o Restrictor
1971JeepWagoneerBase—w/o Restrictor
1970BuickGSBase——
1970BuickGS 455———
1970BuickSkylark———
1970BuickSportwagonBase——
1970JeepJ-100Base—w/o Restrictor
1970JeepJ-2500Base—w/o Restrictor
1970JeepJ-2600Base—w/o Restrictor
1970JeepJ-2700Base—w/o Restrictor
1970JeepJ-3500Base—w/o Restrictor
1970JeepJ-3600Base—w/o Restrictor
1970JeepJ-3700Base—w/o Restrictor
1970JeepJ-3800Base—w/o Restrictor
1970JeepJ-4500Base—w/o Restrictor
1970JeepJ-4600Base—w/o Restrictor
1970JeepJ-4700Base—w/o Restrictor
1970JeepWagoneerBase—w/o Restrictor
1970OldsmobileToronado———
1969OldsmobileToronado———
1969PontiacLeMans———
1969PontiacTempest———
1968OldsmobileToronado———
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Eastern Catalytic — 70247Gates — 355360Hayden — 507336-355360979-2225780346178037017830814