SKU: BXFL-50050-EJ
BLOX Racing MLS Exhaust Gasket Set – 6 Layers – 04-19 Subaru STi
The BLOX Racing MLS Exhaust Gasket Set features six layers of stainless steel for a durable seal between the exhaust manifold and cylinder head. Designed specifically for 2004-2019 Subaru WRX STI models with EJ257 turbo engines this gasket set handles extreme heat and pressure from high-performance turbo applications. It ensures zero leaks to maintain peak exhaust flow and power output.
Key Features
- 6-Layer Stainless Steel Construction: Forms a robust barrier that resists warping and blowouts under boost levels exceeding 30 PSI and temperatures over 1600°F.
- Precision Port Matching: Matches OEM and aftermarket exhaust manifold ports exactly for Subaru STI EJ257 ensuring seamless fit and unrestricted flow.
- High-Temperature Resistance: Stainless steel layers maintain integrity in turbocharged environments preventing exhaust gas leaks during aggressive driving.
- Reusable Design: Engineered for multiple disassembly and reassembly cycles without compromising seal quality saving time on engine builds.
- Direct Bolt-On Fit: No modifications required bolts directly to factory or performance exhaust manifolds on 04-19 STI models.
Product Notes
- Inspect manifold and head surfaces for flatness before installation to achieve best results.
- Clean mating surfaces thoroughly and torque to Subaru specifications.
- Packaged in protective envelope for safe transit.
Installation Notes
- Professional installation recommended.
- Apply thin layer of copper anti-seize to bolts for easy future removal.
- Compatible with factory hardware and most aftermarket exhaust manifolds.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2014 | Subaru | Impreza WRX | STI |
| 2015-2019 | Subaru | WRX | STI |
| 2004-2019 | Subaru | Impreza WRX STI | All |
Why Choose BLOX Racing?
- Trusted since 1996 for JDM performance parts with proven track record in motorsports.
- Manufactured to exacting tolerances using premium materials for long-lasting durability.
- Engineered by enthusiasts for Subaru owners focused on reliability in high-horsepower builds.
Frequently Asked Questions
- Q: Will this fit 2015-2019 WRX STI models?
A: Yes it fits all 2004-2019 Subaru WRX STI models including sedan and hatchback with EJ257 engines direct replacement. - Q: What material is used in these gaskets?
A: Constructed from six layers of 304 stainless steel with elastomer coatings for optimal sealing and heat resistance. - Q: What is the warranty on this product?
A: BLOX Racing offers a one-year limited warranty against manufacturing defects when installed correctly.
Shipping & Handling
- Method: USPS First Class or UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Protective envelope 8 x 6 x 0.5 inches
- Weight: 0.2 lbs





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