Ford 4.6L & 5.4L DOHC 4-Valve Race Master Intake Valve - Single by Manley Performance
Race Master, and the Pro Flo version identified as Race Flo valves, are manufactured from XH-426 material for exhaust and NK-842 material for intake. This series of valves is intended for bracket, drag, and oval track racers operating at 8000 rpm or below. Generally, engine speeds above 8000 rpm require titanium valves.
Any engine builder who has successfully used EV-8 alloy (21-4N) valves will find that this series of Manley valves is an excellent product at a very attractive price. The ultimate tensile strength charts on this page and the next show that the Manley Race series is equal to the best offered by competitors.
Features
- Head Diameter: 38mm
- Stem Diameter: 0.2750
- Installed Height: Stock
- O/A Length: 5.339
- Tip Length: .635
- Underhead Angle/Radius: 10° x 3/8°
- Margin: 0.045
- Seat Width: 0.080"
- Head Top: 5° Dish
- Swirl Polished and Fully Machined
- Chrome Stems and Hard Tips
- Hardened Keeper Grooves
- NK-842 Stainless Intake Material
Benefits
- Ideal for drag race and oval track racers operating below 8,000 rpm. Generally, engine speeds above that require titanium valves
- Equal to the best offered by competitors
Please note: The images provided are generic and may not be an exact representation of the product you will receive
Applications
- 1999-2004 Lincoln Navigator
- 2002 Lincoln Blackwood
- 1996-1997 Ford Thunderbird SVE
- 1995-2002 Lincoln Continental
- 2003-2005 Lincoln Aviator
- 2003-2004 Mercury Marauder
- 1999-2001, 2003-2004 Ford Mustang SVT Cobra R
- 2003-2004 Ford Mustang Mach 1
- 2007-2012 Ford Shelby GT500
- 2008-2009 Ford Shelby GT500KR
- 2004-2006 Ford GT
What's in the box?
- 1 - Valve
Warranty
- Manley products are sold without warranty due to the nature of their intended use.
Before Ordering
〇 Regarding Import Consumption Tax
At Shaft-ya Shopping Site, we pay the import consumption tax incurred at the time of import on your behalf, so there will be no additional charges beyond the total amount paid at checkout.
〇Confirmation of Compatibility
As our product database is based on North American vehicles (USDM), please confirm the compatibility with Japanese vehicles (JDM) before placing your order. (If you are unsure whether the listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to investigate for you.)
If you place an order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, manufacturer, and vehicle model using the tabs on our top page, it does not necessarily mean they will fit Japanese model vehicles without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Delivery
Shipping costs are paid at the time of payment. Shipping estimates are calculated automatically when you enter your shipping address on the checkout page. For large items such as body parts, the actual shipping cost may occasionally differ significantly from the amount calculated automatically. In such cases, we will contact you individually via email.
Essentially, all products are shipped internationally from our US warehouse. Unlike domestic delivery within Japan, international shipping takes about 7 to 14 days, so please allow yourself enough time when ordering. If you are in a hurry, please contact us in advance to confirm delivery times. Note that all products are transported by air; they are not shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Please note that all products we handle are essentially designed and manufactured outside of Japan. They do not comply with the "Japanese Vehicle Inspection System," and we cannot provide strength calculation documents or similar paperwork for the Japanese inspection system. Therefore, all parts are sold for use on "circuits, private property, or off-road," and please install and use them at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival. As all products are shipped internationally from outside Japan, there is a possibility of shipping damage to the packaging or the product. We will only accept returns, refunds, or exchanges for products with shipping damage, defective products, or products different from what you ordered if you contact us within 7 days of receipt. Please understand that for products sold through our company, all warranty-related support will be handled "exclusively through us." Please note that we do not handle support through other companies or distributors located within Japan.