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Mahle HS55017B Engine Cylinder Head Gasket SetOE Quality 60-Day Returns
Part #: HS55017B

Mahle HS55017B Engine Cylinder Head Gasket Set

6 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Subaru, Legacy and Outback
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Mahle HS55017B Head Gasket Set

Mahle HS55017B is an engine cylinder head gasket set for select Subaru applications. It is built for 2010-2012 Subaru Legacy and 2010-2012 Subaru Outback models with improved head gasket design and fitment notes that call for cylinder head bolt replacement.

Key Features

  • Engine cylinder head gasket set for Subaru Legacy and Subaru Outback
  • Improved head gasket design for the listed applications
  • MAHLE sealing products are used by OEMs and technicians worldwide
  • Cross-reference: FEL-PRO HS26531PT-3
  • Part number: HS55017B

Detailed Description

Mahle HS55017B is an OE-style sealing solution for the cylinder head area on select Subaru engines. It is listed for 2010-2012 Subaru Legacy and 2010-2012 Subaru Outback models, making it a direct-fit option for owners searching for a Subaru Legacy head gasket set or Subaru Outback cylinder head gasket set by part number HS55017B. MAHLE focuses on sealing performance that meets the demands of modern engine repair, and this set reflects an improved head gasket design for the covered applications.

What It Helps Address

  • Coolant loss from a failed cylinder head gasket
  • Combustion gas leakage between the head and block
  • Oil seepage at the cylinder head sealing surface
  • Compression loss that affects engine performance
  • Repeat repairs caused by worn or damaged head sealing components

Installation Notes

Fits 2010-2012 Subaru Legacy, N/A. Fits 2010-2012 Subaru Outback, N/A. Cylinder head bolts are not included, and cylinder head bolt replacement is recommended. Verify engine code, gasket surfaces, and related components before installation. Follow factory torque procedures and service specifications during assembly.

Quality Assurance

MAHLE gaskets are trusted by OEMs and technicians around the globe for engine sealing applications. Part number HS55017B is built for the listed Subaru fitments and is intended to support a proper cylinder head sealing repair when installed to manufacturer specifications.

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2012SubaruLegacy2.5LH4N/ACylinder Head Bolts Not Included; Cylinder Head Bolt Replacement Recommended; Improved Head Gasket Design
2012SubaruOutback2.5LH4N/ACylinder Head Bolts Not Included; Cylinder Head Bolt Replacement Recommended; Improved Head Gasket Design
2011SubaruLegacy2.5LH4N/ACylinder Head Bolts Not Included; Cylinder Head Bolt Replacement Recommended; Improved Head Gasket Design
2011SubaruOutback2.5LH4N/ACylinder Head Bolts Not Included; Cylinder Head Bolt Replacement Recommended; Improved Head Gasket Design
2010SubaruLegacy2.5LH4N/ACylinder Head Bolts Not Included; Cylinder Head Bolt Replacement Recommended; Improved Head Gasket Design
2010SubaruOutback2.5LH4N/ACylinder Head Bolts Not Included; Cylinder Head Bolt Replacement Recommended; Improved Head Gasket Design

* 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:

HS26531PT-3

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