Subaru OEM Master Gasket Kit (98-01 SOHC 2.5L) | 10105AC330

Overview

The Genuine Subaru OEM Master Gasket Kit (Part No. 10105AC330) is the factory-engineered solution for a complete engine gasket replacement on 1998–2001 Subaru vehicles equipped with the SOHC 2.5L (EJ25) engine. Designed to OEM specifications, this kit ensures a precise, leak-free seal across every critical engine surface — exactly as Subaru intended. Whether you're performing a full engine rebuild or addressing head gasket failure, this kit delivers the confidence of genuine factory parts with an exact-fit guarantee.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to factory specifications for guaranteed fitment and sealing performance; no modifications required.
• Complete Master Kit — Includes all gaskets needed for a full engine rebuild or top-end service, eliminating the need to source individual components separately.
• Exact-Fit Guarantee — Engineered specifically for the SOHC 2.5L EJ25 engine (1998–2001), ensuring every gasket matches OEM dimensions and material tolerances.
• Factory-Grade Materials — Gaskets are constructed from OEM-approved materials that withstand the thermal cycling, pressure, and coolant exposure of the EJ25 engine.
• Factory Warranty Eligible — Backed by Subaru's genuine parts warranty for added peace of mind.
• Prevents Coolant & Oil Leaks — Proper sealing at every gasket surface protects engine internals and maintains optimal operating temperatures.

What's Included

• Complete master engine gasket set for SOHC 2.5L EJ25 (all gaskets required for full engine rebuild/top-end service)
• Head gaskets (x2 for Subaru's horizontally opposed flat-four layout)
• Valve cover gaskets
• Intake and exhaust manifold gaskets
• Oil pan gasket
• Thermostat and water outlet gaskets
• All additional engine sealing gaskets per OEM specification

Specifications

Fitment & Compatibility

This Genuine Subaru OEM Master Gasket Kit is designed exclusively for 1998–2001 Subaru vehicles equipped with the SOHC 2.5L (EJ25) engine. Confirm your engine code before ordering.

Always verify your vehicle's VIN and engine code to confirm compatibility before purchase. The SOHC EJ25 is distinct from the DOHC EJ25 (WRX/STI) — this kit is NOT compatible with DOHC applications.

Installation

This master gasket kit is intended for professional installation or experienced DIY mechanics comfortable with Subaru EJ-series engine disassembly. A full engine rebuild or head gasket replacement on the EJ25 requires proper torque sequences, surface preparation, and coolant system flushing. We strongly recommend following the Subaru factory service manual (FSM) torque specifications for all fasteners. Professional installation is advised to ensure proper sealing and avoid re-work.