FORD D8TZ-6A666-B Pcv Valve Kit EV-49-B

( Manufacturer Part Number: D8TZ-6A666-B ), ( Part Type: Valve ), ( Country Of Origin: United States )

Review FORD Pcv Valve Kit

The **Ford D8TZ-6A666-B PCV Valve Kit (EV-49-B)** is a precision-engineered replacement assembly designed specifically for Ford engines featuring the **D8TZ** intake manifold configuration, commonly found in models such as the **Ford F-150, Super Duty (F-250/F-350), and Excursion** from the late 1990s through the early 2000s. This kit serves as a comprehensive solution for maintaining optimal engine performance, emissions compliance, and internal cleanliness by addressing the critical function of the **Positive Crankcase Ventilation (PCV) system**. The PCV system is responsible for recirculating blow-by gases unburned fuel and oil vapors that escape past the piston rings back into the intake manifold, where they are safely burned in the combustion chamber rather than being expelled as harmful pollutants. Over time, however, the **PCV valve, hoses, and gasket** can degrade due to exposure to heat, oil sludge, and engine wear, leading to symptoms such as **excessive oil consumption, rough idle, excessive crankcase pressure, or even check engine lights** triggered by improper emissions readings.

The **D8TZ-6A666-B kit** includes a **high-performance PCV valve (EV-49-B)**, which is engineered to provide superior airflow regulation compared to the original equipment, ensuring consistent vacuum control while minimizing carbon buildup on intake valves a common issue in older engines. This valve is designed with a **durable, heat-resistant housing** and a **precise internal diaphragm mechanism** that maintains optimal crankcase ventilation without allowing excessive oil vapor to enter the intake system. Accompanying the valve is a **new PCV hose**, crafted from **high-temperature-resistant rubber** to prevent cracking or hardening over time, ensuring reliable operation even under demanding driving conditions. Additionally, the kit includes a **replacement gasket or seal** (depending on the specific application) to prevent leaks at the valve mounting point, which can otherwise lead to oil contamination or vacuum loss. The components are meticulously packaged to ensure compatibility with the **D8TZ intake manifold**, which features a unique **dual-plane design** with a **central PCV port** that requires an exact-fit replacement to avoid installation errors.

Installation of this kit is straightforward, typically requiring only basic hand tools and minimal disassembly, as the PCV valve is usually located near the **throttle body or intake manifold** and connected via a simple hose clamp. Replacing the valve and associated components is a recommended **preventative maintenance step** during routine engine servicing, as it helps prevent **carbon deposits on intake valves, reduced engine efficiency, and potential long-term damage** to the valve train or oil control rings. For engines operating in **high-mileage or heavy-duty applications**, such as towing or hauling, this kit is particularly beneficial, as it helps mitigate the increased stress on the crankcase ventilation system. The **EV-49-B valve** is also compatible with **aftermarket performance upgrades**, including cold air intakes or high-flow throttle bodies, where maintaining proper PCV function is essential for optimal airflow and emissions control. By investing in this **OEM-quality or high-replacement kit**, vehicle owners can restore their engine s efficiency, reduce harmful emissions, and extend the lifespan of critical internal components, ensuring reliable performance for years to come.

### **Pros and Cons of buying a Ford D8TZ-6A666-B PCV Valve Kit (EV-49-B)**

1. **Direct OEM Replacement** This part is designed as an original equipment manufacturer (OEM) replacement, meaning it matches Ford s factory specifications in terms of material, fit, and function. This ensures compatibility and reliability with your engine.

2. **Improved Engine Breathing** A faulty PCV (Positive Crankcase Ventilation) valve can lead to oil consumption, carbon buildup, and reduced engine performance. Replacing it with this kit helps maintain proper crankcase ventilation, reducing emissions and preventing internal engine damage.

3. **Prevents Carbon Buildup** A clogged or failing PCV valve can allow unburned fuel and oil vapors to circulate within the engine, leading to carbon deposits on intake valves and pistons. This kit helps mitigate that risk.

4. **Cost-Effective Maintenance** Compared to more complex engine repairs (such as valve cleaning or cylinder head work), replacing the PCV valve is a relatively inexpensive fix that can extend the life of your engine.

5. **Easy Installation** The kit is designed for straightforward replacement, typically requiring only basic tools. No major disassembly is needed, making it a quick and hassle-free upgrade.

6. **Compatibility with Ford Engines** This specific part (D8TZ-6A666-B) is engineered for Ford s 6.8L Triton V10 engines (common in F-150, Expedition, and other models), ensuring a proper fit without modifications.

7. **Reduces Oil Consumption** A failing PCV valve can contribute to oil leaks or excessive oil burning. Replacing it helps maintain proper oil levels and reduces the risk of oil-related engine issues.

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1. **Potential Counterfeit Concerns** If purchasing from an untrusted seller (e.g., third-party marketplaces without authentication), there is a risk of receiving a knockoff or low-quality replacement. Always buy from authorized dealers or reputable suppliers.

2. **Minimal Performance Gain** While the PCV valve is important for engine health, replacing it alone will not significantly improve horsepower or fuel efficiency. It primarily prevents damage rather than enhance performance.

3. **Short Lifespan if Engine Has Larger Issues** If the engine has underlying problems (e.g., worn piston rings, valve seals, or excessive carbon buildup), replacing just the PCV valve may provide temporary relief but not a long-term solution.

4. **May Require Additional Maintenance** If the PCV system has been neglected for a long time, simply replacing the valve may not fully resolve all crankcase ventilation issues. Other components (like hoses or filters) might need inspection.

5. **Limited Warranty (If Applicable)** Some aftermarket or non-OEM kits may not come with a warranty, whereas genuine Ford parts often include limited warranties. Always check the warranty terms before purchasing.

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The **Ford D8TZ-6A666-B PCV Valve Kit (EV-49-B)** is a **highly recommended, cost-effective maintenance item** for Ford 6.8L Triton V10 engines. Its primary benefits preventing carbon buildup, reducing oil consumption, and maintaining proper engine breathing make it a **necessary upgrade** if the original valve is failing or worn. However, it is not a performance-enhancing part but rather a **preventative measure** to avoid costly engine damage.

- **Purchase from an authorized Ford dealer or a trusted supplier** to avoid counterfeit parts.

- **Inspect the rest of the PCV system** (hoses, filters, and connections) during installation.

- **Combine this replacement with other routine maintenance** (e.g., oil changes, air filter upgrades) for optimal engine health.

- Your engine is showing signs of a failing PCV valve (excessive crankcase pressure, oil leaks, or carbon buildup).

- You want to prevent long-term engine damage at a minimal cost.

- You are maintaining your vehicle proactively.

**Avoid buying from untrusted sources** to ensure you get a genuine, high-quality replacement. If your engine has multiple issues beyond just the PCV valve, consult a mechanic for a full diagnostic before proceeding.

Details:

This does not mean it is an OEM part. All other shipping quotes given on are strictly estimates. The box or outer packaging may be less than perfect and it will have been opened for picture taking purposes. This does not mean it is used or defective.

The discount will depend on weight, destination, and the items' ability to pack together. Robert and Yvonne. Big stuff goes Fed Ex or UPS. It just means it was made in a different time period by manufacturer.

Look closely at the pictures.

part #: d8tz6a666 prices

• $11.40-$19.99

specifications emissyste:

• for makes: Ford
• mpn: D8tz-6a666-b
• part type: Valve
• country of origin: United States

returns emissyste:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

shipping emissyste:

• type: Fixed
• service: Standard, UPS Ground
• carrier: UPS
• cost: $0.00
• class: Standard
• transit: 5-9 Days

offer emissyste:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: February 12, 2026
• quantity: 1

payments emissyste:

• wallet: Apple-pay
• credit card: Mastercard
• other

general emissyste:

• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts
• condition: New other see details

seller emissyste:

• # reviews: 21435
• city: Cottonwood, Alabama
• rating: 100.0%

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