Subaru OEM Master Gasket Kit (2011 Legacy) | 10105AC390

Overview

The Genuine Subaru OEM Master Gasket Kit (Part #10105AC390) is a complete engine gasket set engineered specifically for the 2011 Subaru Legacy. Designed and manufactured to factory specifications, this kit ensures a precise, leak-free seal across all critical engine mating surfaces — making it the trusted choice for engine rebuilds, head gasket replacements, and major engine service. As an OEM part, it delivers the exact fit, material quality, and durability that Subaru engineers designed into the original engine.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to factory specifications for guaranteed compatibility and long-term reliability, eliminating the guesswork of aftermarket alternatives.
• Complete Master Kit — Includes all necessary gaskets for a full engine overhaul or top-end rebuild, minimizing the need to source individual components separately.
• Exact-Fit Guarantee — Precision-cut to match OEM tolerances for the 2011 Legacy engine, ensuring proper sealing on all mating surfaces without modification.
• Factory-Grade Materials — Constructed from OEM-spec composite, multi-layer steel (MLS), and rubber materials proven to withstand Subaru's BOXER engine heat cycles and pressures.
• Protects Engine Investment — Proper sealing prevents coolant and oil leaks that can lead to catastrophic engine damage, protecting your rebuild for the long term.
• Backed by Subaru's Factory Warranty — Genuine OEM parts are covered under Subaru's standard parts warranty when installed by an authorized technician.

What's Included

• Complete master gasket kit (all engine gaskets for full overhaul)
• Head gasket(s)
• Valve cover gaskets
• Intake and exhaust manifold gaskets
• Oil pan gasket
• Throttle body and related sealing gaskets
• All associated seals and O-rings included in the OEM master set

Specifications

Fitment & Compatibility

This master gasket kit is designed for the following Subaru vehicle application. Always verify your engine code and trim level before ordering to ensure correct fitment.

Note: If you are unsure whether this part fits your specific trim or engine variant, please reference the Subaru OEM parts catalog at parts.subaru.com using part number 10105AC390, or consult your Subaru dealer with your VIN for exact fitment confirmation.

Installation

A master gasket kit is a professional-grade component intended for major engine overhaul or rebuild procedures. Installation requires engine disassembly and is strongly recommended to be performed by a qualified Subaru technician or experienced engine builder. Proper torque sequences, surface preparation, and coolant/oil refill procedures must be followed per Subaru's service manual specifications to ensure a leak-free result and to maintain warranty eligibility.