BLOX BXFL-50050-EJ MLS Exhaust Gasket Set 6-Layer for Subaru WRX STI EJ20 EJ25

Vehicle Fitment

• 2002-2014 Subaru Impreza WRX (EJ20, EJ25, Turbo, AWD)
• 2004-2019 Subaru Impreza WRX STI (EJ25, Turbo, AWD)
• 2003-2006 Subaru Baja (Turbo, AWD)
• 2004-2013 Subaru Forester XT (EJ25, Turbo, AWD)
• 2005-2009 Subaru Legacy GT (EJ25, Turbo, AWD)
• 2005-2009 Subaru Outback XT (EJ25, Turbo, AWD)

Fitment Notes

• Compatible with EJ20 and EJ25 turbocharged Subaru boxer engines only - does not fit naturally aspirated EJ variants
• Designed for the OEM EJ-series turbo exhaust routing (up-pipe, manifold, crossover pipe, downpipe) - verify compatibility if aftermarket exhaust components have been installed
• Individual gaskets from this set are also available for separate purchase
• Downpipe-to-mid-pipe gasket (BXFL-00050-MLS) fitment may vary on Subaru Baja due to differing flange style - verify before installation

Features

• Multi-Layer Steel (MLS) construction using 6 layers of stainless steel for maximum sealing strength and durability
• Stainless steel fire-rings on each gasket crush upon torque to create an enhanced, leak-proof seal
• Engineered to withstand the high heat and pressure demands of turbocharged EJ-series engines
• Reusable design - gaskets can be removed and reinstalled during engine or turbo servicing
• Covers the complete EJ turbo exhaust path from cylinder head through downpipe - no additional gaskets required
• Stainless steel material resists corrosion and heat cycling degradation over time
• Direct upgrade over inferior OEM-style gaskets that are prone to cracking, leaking, or failing under boost
• ISO 9001-certified manufacturing process ensures consistent quality and precision fitment

Specifications

• Material: Stainless Steel MLS (Multi-Layer Steel)
• Layers: 6
• Sealing Feature: Integrated stainless steel fire-rings
• Engine Compatibility: Subaru EJ20 / EJ25 Turbo
• Downpipe Gasket Bore: 3 inches (BXFL-00050-MLS)
• Quantity: 7 gaskets per set (includes 1 pair of head-to-manifold gaskets)

Included Components

• 1x BXFL-00050-MLS - 3" MLS exhaust gasket (downpipe)
• 2x BXFL-50010 - Cylinder head to exhaust manifold MLS gasket (pair)
• 1x BXFL-50011 - Exhaust manifold to up-pipe MLS gasket
• 1x BXFL-50012 - Up-pipe to turbo MLS gasket
• 1x BXFL-50013 - Turbo to downpipe MLS gasket
• 2x BXFL-50014 - Exhaust manifold to crossover pipe MLS gasket (pair)

Product Description

The BLOX Racing MLS Exhaust Gasket Set (BXFL-50050-EJ) is a complete turbo exhaust gasket kit engineered specifically for Subaru EJ20 and EJ25 turbocharged engines. Covering every sealing point in the EJ-series exhaust path - from the cylinder heads all the way through the downpipe - this set eliminates the need to source individual gaskets from multiple suppliers. Each gasket is constructed from 6 layers of stainless steel using a Multi-Layer Steel (MLS) process, the same sealing technology used in high-performance and OEM head gasket applications. This construction gives each gasket the rigidity to maintain a stable seal under the thermal expansion and contraction cycles that are especially severe in turbocharged applications.

A key design feature of the BLOX Racing MLS gaskets is the integrated stainless steel fire-ring built into each piece. When the gasket is torqued to spec, the fire-ring crushes and forms a compressed, gas-tight seal at the most critical sealing zone - the exhaust port opening. This mechanism dramatically outperforms the single-layer stamped steel or composite gaskets that are commonly found in OEM and budget replacement applications, which are known to degrade, blow out, or leak under the heat and pressure of a modified or high-boost EJ engine.

This kit fits the 2002-2014 Subaru WRX, 2004-2019 STI, 2003-2006 Baja Turbo, 2004-2013 Forester XT, and 2005-2009 Legacy GT and Outback XT - all sharing the EJ-series turbocharged flat-four architecture. Whether the vehicle is a stock rebuild, a light bolt-on build, or a high-horsepower built motor, the BXFL-50050-EJ provides a reliable, reusable sealing solution that handles the demands of performance driving and repeated heat cycling. Individual gaskets from this set are also available separately for targeted replacement.