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Manley Performance Manley Ford 4.6L DOHC (4 Valve) Triple Groove 37mm Race Master Intake Valves
Manley Performance Manley Ford 4.6L DOHC (4 Valve) Triple Groove 37mm Race Master Intake Valves
Manley Performance Manley Ford 4.6L DOHC (4 Valve) Triple Groove 37mm Race Master Intake Valves
Manley Performance Manley Ford 4.6L DOHC (4 Valve) Triple Groove 37mm Race Master Intake Valves
Manley Performance Manley Ford 4.6L DOHC (4 Valve) Triple Groove 37mm Race Master Intake Valves
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Manley Ford 4.6L DOHC (4 Valve) Triple Groove 37mm Race Master Intake Valves

MAN11616-8
807298000831
Valves
20+ Units In Stock - Ships Next Business Day
$ 270.06 $ 202.55
$ 202.55

SKU: 11616-8 | UPC: 807298000831

Manley Ford 4.6L DOHC (4 Valve) Triple Groove 37mm Race Master Intake Valves 1999-2008 Mustang Cobra GT Shelby GT500

Manley Race Series intake valves deliver reliable performance for Ford 4.6L and 5.4L DOHC 4-valve engines in high-revving applications up to 8000 RPM. These 37mm triple groove valves fit select Mustang SVT Cobra, Shelby GT500, and GT models from 1999 to 2008. Precision construction ensures consistent airflow and durability in bracket racing, drag, and oval track use.

Key Features

  • 37mm Head Diameter: Boosts intake airflow for improved throttle response and power in 4.6L/5.4L DOHC heads
  • Triple Groove Design: Locks retainers securely during high-RPM operation to prevent valve float
  • Swirl Polished Stems: Reduces guide friction and wear for longer service life in race conditions
  • Hardened One-Piece Forged Tips: Resists scuffing and maintains valve train geometry under extreme loads
  • 5.050 Inch Length (128.27mm): Direct fit for Ford Modular DOHC cylinder heads with 7/16 inch (8.712mm) stem diameter

Product Notes

  • One-piece stainless steel construction handles heat and stress in competition engines
  • Inspect valve seats and guides prior to installation for proper clearance
  • Set of 8 valves ships in protective OEM-style packaging

Installation Notes

  • Professional installation recommended.
  • Match valve stem diameter to guides. use positive seals for oil control
  • Compatible with stock or aftermarket valve springs up to 8000 RPM

This Part Fits

Year Make Model Submodel
1999 Ford Mustang SVT Cobra
2000 Ford Mustang SVT Cobra R
2001 Ford Mustang SVT Cobra
2005-2006 Ford GT Base
2007-2008 Ford Mustang Shelby GT500

Why Choose Manley?

  • Decades of experience supplying valves to professional racing teams
  • Rigorous testing ensures reliability at sustained high RPM
  • CNC machined for exact tolerances and consistent performance

Frequently Asked Questions

  • Q: Does this fit 2003-2004 Mustang SVT Cobra or Mach 1?
    A: Confirmed fitment for listed years only. verify head casting for 4.6L/5.4L DOHC 4V compatibility
  • Q: What material are these valves made from?
    A: One-piece stainless steel with hardened tips and swirl polished stems for heat resistance and low friction
  • Q: What is the warranty on Manley Race valves?
    A: Limited warranty against manufacturing defects. contact Manley for race-specific policies

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Securely boxed measuring 6 x 4 x 2 inches
  • Weight: 1.6 lbs

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Founded in 1966 by Hank Manley, Manley Performance Products has become one of the most respected names in high-performance engine components. Originally launched as Manley Speed Equipment, the company quickly earned a reputation for precision manufacturing, durability, and race-proven performance. From grassroots beginnings in New Jersey to global recognition in professional motorsports, Manley Performance continues to set the standard in high-performance automotive parts. Manley Performance Engine Parts Manley is known for manufacturing premium internal engine components designed for street, strip, and professional racing applications. Their product line includes: Manley stainless steel valves Manley forged pistons Manley connecting rods (H-Beam, I-Beam, Turbo Tuff, Pro Series) Manley camshafts Manley crankshafts Manley valvetrain components Valve springs, retainers, and hardware Every Manley component is engineered with strict quality control and race-driven innov...

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