BLOX Racing BXFL-50051-FA MLS Exhaust Gasket Kit 6-Layer 2015-2021 Subaru WRX

Vehicle Fitment

• 2015-2021 Subaru WRX - FA20DIT 2.0L Turbocharged Boxer

Fitment Notes

• Fits the 2015-2021 Subaru WRX with the FA20DIT engine only. Does not fit the WRX STI (which uses the EJ25 engine) - a separate BLOX Racing EJ-series gasket set is available for that application.
• Complete kit covering all four exhaust sealing points in the turbo exhaust path - engine to manifold, manifold to turbo, turbo to downpipe, and the 3" downpipe section. No additional gaskets required for a full exhaust service.
• Each gasket in this kit is also available individually from BLOX Racing if only one position needs replacement.

Features

• BLOX Racing MLS (Multi-Layer Steel) exhaust gasket set for the 2015-2021 Subaru WRX FA20 - a complete four-position gasket kit covering the entire turbocharged exhaust path from the engine to the downpipe. MLS construction uses multiple layers of stainless steel to provide superior sealing performance and heat resistance compared to single-layer OEM-style gaskets, which are prone to cracking, blowing, and leaking under the high thermal cycling of a turbocharged application.
• 6-layer stainless steel construction - six laminated layers of stainless steel provide greater compressibility, recovery, and resistance to deformation under heat and pressure cycles than single-layer or copper gaskets.
• Stainless steel fire rings - each gasket includes integrated stainless steel fire rings at the combustion or exhaust port openings. When the gasket is torqued to spec, the fire rings crush and create a concentrated, high-pressure primary seal at the most critical point of each joint, significantly reducing the likelihood of exhaust leaks at the port bore.
• Heavy-duty design rated for the high heat temperatures of turbocharged engines - suitable for both stock power levels and modified builds where exhaust gas temperatures are elevated.

Specifications

• Part Number: BXFL-50051-FA
• Gasket Construction: 6-Layer Multi-Layer Steel (MLS)
• Material: Stainless Steel
• Seal Type: Stainless Steel Fire Rings (integrated)
• Application: 2015-2021 Subaru WRX FA20DIT
• Warranty: 15 Months (against defects in materials and workmanship)

Included Components

• BXFL-50020 - Engine to Manifold Gasket (pair, 2 gaskets)
• BXFL-50021 - Manifold to Turbo Gasket (1 gasket)
• BXFL-50022 - Turbo to Downpipe Gasket (1 gasket)
• BXFL-00050-MLS - 3" Downpipe Exhaust Gasket (1 gasket)

Product Description

The BLOX Racing BXFL-50051-FA is a complete 6-layer MLS exhaust gasket kit for the 2015-2021 Subaru WRX with the FA20DIT turbocharged boxer engine. It covers all four sealing positions in the turbo exhaust path - engine to manifold (pair), manifold to turbo, turbo to downpipe, and the 3" downpipe exhaust gasket - providing everything needed to reseal the exhaust system in a single purchase whether servicing the turbo, replacing the manifold, or doing a full exhaust build.

Each gasket is constructed from six layers of stainless steel with integrated stainless steel fire rings. The fire rings create a concentrated, high-pressure primary seal at the port bore when torqued to specification, providing significantly better leak resistance than the OEM single-layer gaskets that commonly fail on modified or high-mileage FA20 WRX builds. All four individual gaskets are also available separately under their own part numbers for single-position replacement. Backed by BLOX Racing's 15-month warranty against defects in materials and workmanship.