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SKU: PY-8023-A-AL | UPC: 842422131425
Kooks PY-8023-A-AL MLS Aluminum Header Gaskets for Ford 4.6L 3V Modular Engines
The Kooks MLS (Multi-Layer Steel) header gaskets deliver leak-free sealing for all Ford 4.6L 3V modular engines (2005–2010 Mustang GT, 2007–2014 F-150 4.6L 3V, etc.), featuring a 3-layer stainless steel construction with embossed sealing beads that withstand over 1,800°F and repeated heat cycles without blowing out or crushing. These port-matched gaskets fit perfectly with Kooks long-tube headers and most aftermarket 4.6L 3V headers.
Designed for high-performance street, race, or boosted applications up to 1,000+ HP, the MLS design prevents exhaust leaks, protects header flanges, and eliminates the need for re-torquing after heat cycles. Sold as a pair (one per bank) for complete engine coverage, they are the factory-recommended gasket for every Kooks 4.6L 3V header installation.
For 4.6L 3V builders demanding zero leaks and maximum durability, the Kooks PY-8023-A-AL MLS gaskets are the professional-grade solution trusted on championship-winning Mustang and F-150 builds worldwide.
Key Features
- 3-layer stainless steel with embossed sealing beads
- Withstands 1,800°F+ and repeated heat cycles
- Port-matched for Ford 4.6L 3V modular heads
- Prevents exhaust leaks and flange damage
- Supports 1,000+ HP NA, supercharged, or turbo
- Sold as pair – one per bank
Product Notes
- Fits all Ford 4.6L 3V modular engines
- Use with Kooks or most aftermarket 4.6L 3V headers
- Torque to 25–30 ft-lbs with anti-seize
California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
Warranty: Limited lifetime against manufacturing defects to original purchaser.
Installation Notes
- Professional installation recommended
- Clean header and head surfaces thoroughly
- Apply high-temp anti-seize to bolts
- Torque in 3 stages to 25–30 ft-lbs
This Part Fits
| Year | Make | Model | Engine |
|---|---|---|---|
| 2005–2010 | Ford | Mustang GT | 4.6L 3V |
| 2007–2014 | Ford | F-150 | 4.6L 3V |
Note: Universal fit for all Ford 4.6L 3V modular engines with Kooks or aftermarket headers.
What's Included in the Purchase
- (2) MLS Aluminum Header Gaskets (Left & Right)
- Part Number: Kooks PY-8023-A-AL
Why Choose Kooks?
- Over 60 years of championship-winning exhaust engineering
- Only factory-recommended gaskets for Kooks 4.6L 3V headers
- Limited lifetime warranty on all components
Frequently Asked Questions
-
Q: Fits 2005–2010 Mustang GT?
A: Yes, perfect for all 4.6L 3V applications -
Q: Reusable?
A: No, replace during header install -
Q: Torque spec?
A: 25–30 ft-lbs in 3 stages
Shipping & Handling
- Method: UPS or Fed Ex Ground.
- Availability: Typically ships same day or next if in stock.
- Packaging: Protective retail envelope.
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