FORD 8R3Z-6049-C Cylinder Heads Left Right 4.6L 3V

( Manufacturer Part Number: 8R3Z-6049-C ), ( Type: Cylinder Head ), ( Oe/oem Part Number: Rf-9l3e-6090-ba, Rf-9l3e-6c064-ba ), ( Material: Aluminum )

Review FORD 4.6l 3v Cylinder Heads Left Right Side Pair Oem fits MUSTANG GT 2005–2010

The **Ford 8R3Z-6049-C (2005-2010 Mustang GT 4.6L Modular V8) Cylinder Heads (Left & Right)** are a critical and highly sought-after component for enthusiasts looking to restore, modify, or upgrade their iconic 4.6L Coyote-powered Mustang GT. These precision-machined aluminum heads are designed to complement the high-performance demands of Ford s legendary 4.6L V8 engine, which powers the 2005 through 2010 GT models, including the legendary 2005-2009 SVT Cobra variants. Crafted from high-grade 356-T6 aluminum alloy, these heads are engineered for durability and thermal efficiency, ensuring optimal combustion and heat dissipation under high-stress conditions. The **8R3Z-6049-C** designation identifies these heads as part of the **Modular V8 family**, featuring a **3-valve-per-cylinder (3V) design** with a single intake valve and two exhaust valves per cylinder, which enhances airflow and power output while maintaining reliability. The intake ports are generously sized to promote smooth, high-volume airflow, while the exhaust ports are strategically contoured to maximize scavenging and reduce backpressure, contributing to the engine s aggressive yet refined performance. These heads are compatible with the **DOHC (Dual Overhead Camshaft) configuration**, featuring **hydraulic roller camshafts** that deliver smooth valve operation and minimize wear, making them ideal for both stock and modified applications. Whether you're rebuilding a classic Mustang GT for daily driving or preparing it for track use, these cylinder heads offer a balance of performance and longevity. For those looking to push their engine further, these heads can be paired with aftermarket upgrades like larger valves, porting, or high-flow headers to unlock even greater potential. As a genuine Ford part, they ensure a perfect fit with the engine bay s existing components, including the **intake manifold, exhaust manifold, and valve cover**, making them a reliable choice for both restoration projects and performance builds. Whether you're restoring a vintage Mustang or fine-tuning a modern GT, these **8R3Z-6049-C cylinder heads** are a cornerstone of the 4.6L s legendary power delivery.

### **Pros and Cons of Buying Used Ford 8R3Z-6049-C (2005 2010 Mustang GT 4.6L) Cylinder Heads (Left & Right)**

1. **Compatibility with a Common Engine** The 4.6L Modular V8 (also used in F-150s, Excursions, and other Mustangs) is widely available, making parts and modifications easier to source.

2. **Potential for Performance Gains** If the heads are in good condition, they can be ported, polished, or upgraded with high-flow valves to improve airflow and horsepower.

3. **Cost-Effective Upgrade** Buying used heads can be cheaper than purchasing new or aftermarket alternatives, especially if they are already in decent shape.

4. **DIY Potential** If you have mechanical experience, you can install them yourself, saving labor costs.

5. **Availability of Supporting Parts** Gaskets, bolts, seals, and other components for the 4.6L engine are widely available, both new and used.

6. **Potential for Restoration** If the heads are worn but structurally sound, they can be rebuilt or resurfaced, extending their lifespan.

7. **Nostalgia & Classic Mustang Appeal** The 4.6L engine is iconic in the Mustang GT lineup, and restoring or upgrading it can enhance the car s character.

1. **Potential Wear & Tear** Used cylinder heads may have worn valve seats, cracked passages, or warped decks, requiring costly repairs or replacement.

2. **Unknown Maintenance History** Without service records, it s hard to know if they ve been properly maintained, leading to hidden issues like leaks or corrosion.

3. **Compatibility Issues** If the heads don t match the engine s condition (e.g., a worn block but good heads), they may not fit properly or could cause problems.

4. **Risk of Hidden Damage** Cracks, warping, or internal damage (like burned valves) may not be visible until disassembly, leading to unexpected repair costs.

5. **Limited Performance Potential Without Mods** Stock 4.6L heads are not high-flow, so significant gains require porting, valve upgrades, or camshaft changes, adding cost.

6. **Market Variability** Prices can fluctuate based on condition, location, and demand, making it difficult to gauge a fair deal.

7. **Potential for Scams** Buying from private sellers without inspection increases the risk of receiving damaged or mismatched parts.

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### **Conclusion**

Buying used 8R3Z-6049-C cylinder heads for a 2005 2010 Mustang GT 4.6L can be a cost-effective way to restore or upgrade your engine, especially if you re mechanically inclined and willing to inspect them thoroughly. However, the risk of hidden damage, compatibility issues, and additional repair costs means you must approach this purchase with caution.

If you re confident in your ability to inspect and repair them, or if you re getting them from a trusted source with a warranty, they could be a worthwhile investment. If you re unsure about their condition or lack mechanical experience, it may be safer to purchase new or aftermarket heads to avoid costly surprises.

### **Recommendation**

1. **Inspect Thoroughly** Look for cracks, warping, pitting, or signs of overheating. Check valve seats, guides, and springs for wear.

2. **Test for Leaks** Pressure-test the heads to ensure they seal properly.

3. **Verify Compatibility** Ensure they match your engine s block and camshaft specifications.

4. **Consider a Rebuilt Option** If the heads are worn but structurally sound, a professional rebuild may be cheaper than buying new.

5. **Buy from a Trusted Source** Prefer dealers, auctions with return policies, or sellers who offer warranties.

6. **Budget for Additional Costs** Factor in gaskets, bolts, seals, and potential machining if the heads need resurfacing.

7. **Alternative Options** If unsure, explore aftermarket heads (e.g., Edelbrock, JE) or new OEM replacements for peace of mind.

Ultimately, the decision depends on your budget, mechanical skills, and willingness to take on potential risks. If you re confident in your ability to assess and repair them, a used pair could be a smart buy. Otherwise, investing in new or high-quality aftermarket parts may be the safer choice.

Details:

We desire to give you the best quality used parts and maintain a 5 star rating. We inspect every part before we put for sale. We encourage communication.

part #: 8r3z6049 prices

• $495.00-$500.00

specifications cylinderheapar:

• for models: Gt, Mustang
• for makes: Ford
• for years: 2005-2010
• mpn: 8r3z-6049-c
• type: Cylinder Head
• oe/oem part number: Rf-9l3e-6090-ba, Rf-9l3e-6c064-ba
• material: Aluminum

shipping cylinderheapar:

• type: Fixed
• transit: 4-10 Days
• class: Standard
• service: USPS Ground Advantage
• carrier: USPS
• cost: $0.00

seller cylinderheapar:

• rating: 99.6%
• # reviews: 807
• city: Miami, Florida

returns cylinderheapar:

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

offer cylinderheapar:

• availability: In Stock
• options: Ship-to-home
• started: April 7, 2026
• quantity: 1
• sold: 0

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

payments cylinderheapar:

• credit card: Mastercard
• other
• wallet: Paypal

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