HomeSteering > Power Steering Hoses, Pumps, and Related ComponentsSunsong 3402603 Power Steering Pressure Line Hose Assembly - Pump To Hydroboost (Hydroboost End)
Part #: 3402603

Sunsong 3402603 Power Steering Pressure Line Hose Assembly - Pump To Hydroboost (Hydroboost End)

Pump To Hydroboost (Hydroboost End)
⚙️ 17 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$104.82Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Cadillac, DeVille, DTS, and Seville
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Power Steering Pressure Line Hose Assembly

The Sunsong 3402603 power steering pressure line hose assembly is designed for precise fitment on Cadillac DeVille, DTS, and Seville models. Engineered to maintain optimal hydraulic pressure, this hose assembly ensures consistent steering performance and durability.

  • Compatible with Cadillac DeVille, DTS, and Seville vehicles
  • 33.5 inches (850 mm) length for exact fit
  • End 1: 16 mm female o-ring fitting
  • End 2: 18 mm male o-ring fitting
  • Constructed with CSM hose material for heat and abrasion resistance
  • No bracket included, designed for direct replacement
  • Part number 3402603 for accurate identification

Product Details and Specifications

This power steering pressure line hose assembly from Sunsong features a 33.5-inch length, suitable for specific Cadillac models including DeVille, DTS, and Seville. The hose is made from chlorosulfonated polyethylene (CSM), a material known for its resistance to heat, oil, and abrasion, which is critical for maintaining the integrity of the power steering system. The assembly includes a 16 mm female o-ring fitting on one end and an 18 mm male o-ring fitting on the other, ensuring a secure and leak-free connection within the hydraulic system. This part does not include a bracket or power steering switch port, focusing solely on the pressure line function.

Applications and Common Issues Addressed

  • Replacement for worn or leaking power steering pressure hoses
  • Restores proper hydraulic pressure for smooth steering response
  • Prevents fluid leaks that can cause steering system failure
  • Eliminates hose swelling or cracking due to heat exposure
  • Addresses fitment issues in Cadillac DeVille, DTS, and Seville power steering systems

Installation Notes and Tips

When installing the Sunsong 3402603 power steering pressure line hose assembly, ensure the fittings match the vehicle’s specifications: 16 mm female o-ring on one end and 18 mm male o-ring on the other. Verify hose routing to avoid contact with moving parts or excessive heat sources. Use proper torque specifications on fittings to prevent leaks. This hose assembly does not include a bracket, so reuse the existing mounting hardware if applicable. Follow vehicle manufacturer guidelines for power steering system bleeding after installation.

Quality Assurance and Warranty

Sunsong power steering components are manufactured to meet or exceed OEM standards for durability and performance. The 3402603 hose assembly undergoes rigorous testing to ensure resistance to pressure, heat, and abrasion. While specific warranty details are not provided, Sunsong products typically come with a limited warranty against defects in material and workmanship. Consult the product documentation or supplier for exact warranty terms.

BrandSunsong
Part Number3402603
Bracket (Y/N)N
End 1 Fitting Size (mm)16
End 1 Fitting TypeFemale o-ring
End 2 Fitting Size (mm)18
End 2 Fitting TypeMale o-ring
Hose Material 1Csm
Length (in)33.5
Length (mm)850
PS Switch Port (Y/N)N
Tech TipTt1000

This part fits 17 vehicles. Search below:

YearMakeModelSubmodelPositionNotes
2011CadillacDTSPump To Hydroboost (Hydroboost End)
2010CadillacDTSPump To Hydroboost (Hydroboost End)
2009CadillacDTSPump To Hydroboost (Hydroboost End)
2008CadillacDTSPump To Hydroboost (Hydroboost End)
2007CadillacDTSPump To Hydroboost (Hydroboost End)
2006CadillacDTSBasePump To Hydroboost (Hydroboost End)
2005CadillacDeVillePump To Hydroboost (Hydroboost End)
2004CadillacDeVillePump To Hydroboost (Hydroboost End)
2004CadillacSevilleSLSPump To Hydroboost (Hydroboost End)
2003CadillacDeVillePump To Hydroboost (Hydroboost End)
2003CadillacSevillePump To Hydroboost (Hydroboost End)
2002CadillacDeVillePump To Hydroboost (Hydroboost End)
2002CadillacSevillePump To Hydroboost (Hydroboost End)
2001CadillacDeVillePump To Hydroboost (Hydroboost End)
2001CadillacSevillePump To Hydroboost (Hydroboost End)
2000CadillacDeVillePump To Hydroboost (Hydroboost End)
2000CadillacSevillePump To Hydroboost (Hydroboost End)

* 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:

260760533656595518892269

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.