BLOX Racing Cylinder Head to Exhaust Manifold MLS Gasket for Subaru EJ20/EJ25 (Pair) BLOX Racing BLOBXFL-50010
BLOX Racing Cylinder Head to Exhaust Manifold MLS Gasket for Subaru EJ20/EJ25 (Pair) BLOX Racing BLOBXFL-50010
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BLOX Racing Cylinder Head to Exhaust Manifold MLS Gasket for Subaru EJ20/EJ25 (Pair)

BLOX Racing
BLOBXFL-50010
BXFL-50010
Exhaust Gaskets
20+ Units In Stock - Ships Next Business Day
$ 18.00
$ 18.00

SKU: BXFL-50010

BLOX Racing Cylinder Head to Exhaust Manifold MLS Gasket for Subaru EJ20/EJ25 Turbo Models 2002-2017 (Pair)

BLOX Racing Cylinder Head to Exhaust Manifold MLS Gaskets provide a precise seal for Subaru EJ20 and EJ25 turbocharged engines in WRX STI Forester XT Legacy GT Outback XT Impreza WRX Baja and Saab 9-2X from 2002 to 2017. These gaskets handle extreme exhaust gas temperatures and boost pressures over 40 psi to prevent leaks and deliver consistent power in high-performance setups. A pair ensures complete coverage for left and right sides supporting 500+ whp applications.

Key Features

  • Multi-Layer Steel Construction: Three layers of embossed 301 stainless steel with vermiculite and elastomeric coatings form a gas-tight seal resisting over 40 psi pressure and temperatures above 1800°F.
  • Direct OEM Replacement: Matches factory port shapes and bolt patterns for EJ20T EJ25T turbo engines including OEM PN 11095AA421 for bolt-on fit without modifications.
  • Pair for Complete Coverage: Both left and right gaskets included to cover the full exhaust manifold for balanced flow and leak-free operation.
  • Boost and Heat Resistant: Holds integrity during high turbo boost and EGT spikes in modified Subaru engines for reliable performance.
  • Reusability Potential: Built for multiple heat cycles with proper torque unlike single-use composite designs.

Product Notes

  • Inspect cylinder head and manifold surfaces for flatness before installation to ensure optimal sealing.
  • Torque bolts in sequence to 22-25 ft-lbs using M8x1.25x55mm OEM-style studs or equivalents.
  • Store in cool dry place protected from oil contamination prior to use.

Installation Notes

  • Professional installation recommended.
  • Clean mating surfaces thoroughly and apply thin anti-seize to bolts.
  • Compatible with OEM exhaust manifold hardware and aftermarket studs.

This Part Fits

Year Make Model Submodel
2006-2009 Subaru Legacy GT spec.B
2005-2006 Subaru Outback XT
2005-2009 Subaru Outback XT Limited
2015-2017 Subaru WRX STI Base
2015 Subaru WRX STI Launch Edition
2015-2017 Subaru WRX STI Limited
2016 Subaru WRX STI Series.HyperBlue
2006 Saab 9-2X Aero
2004-2006 Subaru Baja Turbo
2008 Subaru Forester Sports 2.5 XT
2004-2005 Subaru Forester XT
2009 Subaru Forester XT
2006-2010 Subaru Forester XT Limited
2005 Subaru Forester XT Premium
2010-2013 Subaru Forester XT Premium
2011-2013 Subaru Forester XT Touring
2002-2014 Subaru Impreza WRX
2006-2007 Subaru Impreza WRX Limited
2010-2014 Subaru Impreza WRX Limited
2009-2014 Subaru Impreza WRX Premium
2004-2014 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI Limited
2011-2014 Subaru Impreza WRX STI Limited
2010 Subaru Impreza WRX STI Special Edition
2006-2007 Subaru Impreza WRX TR
2010-2012 Subaru Legacy 2.5GT
2005-2006 Subaru Legacy GT
2005 Subaru Legacy GT Limited
2007-2009 Subaru Legacy GT Limited

Why Choose BLOX Racing?

  • BLOX Racing leads in JDM performance parts with track-proven designs used in rally and drag racing.
  • Manufactured with premium materials meeting motorsport standards for consistent results.
  • Precision engineered in USA for exact fitment on Subaru turbo platforms.

Frequently Asked Questions

  • Q: Will this fit my 2004 Subaru Impreza WRX STI EJ255?
    A: Yes it directly replaces OEM gasket PN 11095AA421 on all EJ20T EJ25T turbo variants listed.
  • Q: What materials are used in these MLS gaskets?
    A: Three layers of 301 stainless steel with vermiculite coating and elastomer beads for sealing.
  • Q: Is there a warranty and what about reusability?
    A: BLOX offers 1-year defect warranty. Gaskets support reuse if undamaged and torqued properly.

Shipping & Handling

  • Method: UPS Ground / USPS Priority Mail
  • Availability: In stock - ships same or next business day
  • Packaging: Flat envelope 9 x 6 x 0.5 inches
  • Weight: 0.25 lbs

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