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Dorman 918-343 Power Steering CoolerOE Quality 60-Day Returns
Part #: 918-343

Dorman 918-343 Power Steering Cooler

51 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet, GMC, and Oldsmobile, Blazer, Bravada, Jimmy, S10, S10 Blazer, and Sonoma
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Dorman 918-343 Power Steering Cooler

Dorman 918-343 is a direct-fit power steering cooler built to match the original cooler’s fit and function on specified vehicles. It uses aluminum construction with a black finish for dependable cooling performance in the steering system.

Key Features

  • Aluminum construction for durable heat transfer
  • Black finish
  • Push-style inlet and outlet fittings
  • Overall dimensions: 23 in length, 23 in height, 15 in overall width, 0.125 in thickness
  • Inlet and outlet fitting inside diameter: 0.12 in
  • Inlet and outlet fitting outside diameter: 0.15 in
  • Direct replacement for OE-style steering cooler service

Detailed Description

This power steering cooler is engineered for vehicles that need a replacement cooler with the same fit and function as the original unit. Dorman 918-343 is designed for Chevrolet Blazer, Chevrolet S10, GMC Jimmy, GMC Sonoma, Oldsmobile Bravada, and Chevrolet S10 Blazer applications listed below. It is a practical replacement for restoring fluid cooling performance in the steering system, especially on higher-mileage trucks and SUVs that rely on stable power steering temperatures.

This part cross-references GM 15159570 for the same application. Dorman 918-343 is a fitment-based replacement for 1994-2005 Chevrolet Blazer, 1994-2004 Chevrolet S10, 1994-2004 GMC Jimmy, 1994-2004 GMC Sonoma, 1996-2001 Oldsmobile Bravada, and 1994 Chevrolet S10 Blazer.

What It Helps Address

  • Power steering fluid running hotter than normal
  • Reduced steering assist caused by overheated fluid
  • Leaks or damage in the original steering cooler assembly
  • Corrosion or wear in the factory cooler
  • Loss of cooling efficiency in the steering circuit

Installation Notes and Tips

Verify vehicle fitment by year, make, and model before installation. Confirm the push-style fittings and overall dimensions match the original cooler routing and mounting space. Inspect connected hoses and fittings for wear before installing the replacement cooler to help ensure a proper seal and reliable operation.

Quality Assurance

Dorman designs this cooler to match original equipment fit and function using quality materials for reliable performance and durability.

BrandDorman
Part Number918-343
MaterialAluminio
MaterialAluminum
Length23
ColorBlack
ColorNegro
ColorNoir
Thickness0.125
Height23
Inlet Fitting Inside Diameter0.12
Outlet Fitting Inside Diameter0.12
Inlet Fitting Outside Diameter0.15
Fitting TypePulsador
Fitting TypePush
Outlet Fitting Outside Diameter0.15
Ancho total15 in
Contenidos del paquete1 refrigerante de la dirección hidraulica
Overall Width15 in
Package Contents1 power steering cooler

This part fits 51 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005ChevroletBlazer4.3LV6N/A
2004ChevroletBlazer4.3LV6N/A
2004ChevroletS104.3LV6N/A
2004GMCJimmy4.3LV6N/A
2004GMCSonoma4.3LV6N/A
2003ChevroletBlazer4.3LV6N/A
2003ChevroletS102.2LL4N/A
2003GMCJimmy4.3LV6N/A
2003GMCSonoma2.2LL4N/A
2002ChevroletBlazer4.3LV6N/A
2002ChevroletS102.2LL4N/A
2002GMCJimmy4.3LV6N/A
2002GMCSonoma2.2LL4N/A
2001ChevroletBlazer4.3LV6N/A
2001ChevroletS104.3LV6N/A
2001GMCJimmy4.3LV6N/A
2001GMCSonoma2.2LL4N/A
2001OldsmobileBravada4.3LV6N/A
2000ChevroletBlazer4.3LV6N/A
2000ChevroletS102.2LL4N/A
2000GMCJimmy4.3LV6N/A
2000GMCSonoma2.2LL4N/A
2000OldsmobileBravada4.3LV6N/A
1999ChevroletBlazer4.3LV6N/A
1999ChevroletS104.3LV6N/A
1999GMCJimmy4.3LV6N/A
1999GMCSonoma2.2LL4N/A
1999OldsmobileBravada4.3LV6N/A
1998ChevroletBlazer4.3LV6N/A
1998ChevroletS102.2LL4N/A
1998GMCJimmy4.3LV6N/A
1998GMCSonoma2.2LL4N/A
1998OldsmobileBravada4.3LV6N/A
1997ChevroletBlazer4.3LV6N/A
1997ChevroletS102.2LL4N/A
1997GMCJimmy4.3LV6N/A
1997GMCSonoma2.2LL4N/A
1997OldsmobileBravada4.3LV6N/A
1996ChevroletBlazer4.3LV6N/A
1996ChevroletS104.3LV6N/A
1996GMCJimmy4.3LV6N/A
1996GMCSonoma4.3LV6N/A
1996OldsmobileBravada4.3LV6N/A
1995ChevroletBlazer4.3LV6N/A
1995ChevroletS104.3LV6N/A
1995GMCJimmy4.3LV6N/A
1995GMCSonoma2.2LL4N/A
1994ChevroletS102.2LL4N/A
1994ChevroletS10 Blazer4.3LV6N/A
1994GMCJimmy4.3LV6N/A
1994GMCSonoma2.2LL4N/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:

15159570

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

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