SKU: HG-FDUR25-91-1T | UPC: 01037721243524
Supertech Ford Duratec 2.5L 91mm Bore .040in (1.00mm) Thick MLS Head Gasket 2005-2011 Ford Focus 2004-2009 Mazda3 Mazda6
This Supertech MLS head gasket provides reliable sealing for Ford Duratec 2.5L engines with 91mm bores in high performance builds. It fits 2005-2011 Ford Focus 2004-2009 Mazda3 Mazda6 2006-2012 Fusion and 2007-2013 Volvo C30 S40 V50 models with modified Duratec engines. The 0.040in thickness enables tight quench areas to increase combustion efficiency and power under high boost.
Key Features
- MLS Construction: Multi-layer steel design with embossed sealing beads handles pressures over 40 psi boost and high cylinder pressures without blowout
- 91mm Bore Diameter: Precision matched to oversized Duratec bores ensuring zero leaks around combustion chamber for maximum power retention
- 0.040in (1.00mm) Thickness: Reduced gasket thickness promotes shorter quench distance boosting detonation resistance and horsepower
- High Temperature Resistance: Fire ring and stainless steel layers endure 2000F temps in turbocharged or supercharged Duratec builds
- Direct OEM Replacement: Matches factory bolt pattern for seamless install on ported heads or stock configurations
Product Notes
- Measure bore size prior to installation to confirm 91mm compatibility
- Replace head bolts or use ARP studs for repeated disassembly
- Packaged flat in protective envelope for damage-free delivery
Installation Notes
- Professional installation recommended.
- Clean cylinder head and block surfaces to mirror finish before assembly
- Compatible with OEM head bolts torqued to Ford Duratec specs in crisscross pattern
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2005-2011 | Ford | Focus | All (2.0L 2.3L Duratec bored to 2.5L) |
| 2004-2009 | Mazda | 3 | All (2.3L Duratec bored to 2.5L) |
| 2003-2008 | Mazda | 6 | All (2.3L Duratec bored to 2.5L) |
| 2006-2012 | Ford | Fusion | 2.5L Duratec |
| 2007-2013 | Volvo | C30 S40 V50 | 2.5L Duratec |
Why Choose Supertech?
- Performance parts trusted in World Challenge racing series
- CNC machined for exact tolerances on every gasket
- Engineered for boosted Duratec engines in drag and circuit use
Frequently Asked Questions
- Q: Will this gasket fit stock bore Duratec engines?
A: Designed specifically for 91mm bores use stock gaskets for 87-89mm applications - Q: What materials are used in construction?
A: Three-layer 301 stainless steel with elastomer-coated center and wire-arc fire ring for sealing - Q: What warranty coverage applies?
A: One-year unlimited mileage defect warranty covers manufacturing flaws when installed correctly
Shipping &. Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Flat envelope 12in x 10in x 0.25in
- Weight: 0.45 lbs
