FORD 5010191R91 Diesel Engine Passenger Right Rh Cylinder 306-134 6.0L Head Unit

( Manufacturer Part Number: 5010191R91 ), ( Part Type: Engine Cylinder Head Unit ), ( Condition And Options: 8-366, Diesel, From 1/16/06, From Engine Id ), ( Manufacturer Warranty: 90 Day ), ( Ipn: 306-134 ), ( Fitment Type: Direct Replacement ), ( Oe Spec Or Performance/custom: Oem Factory Spec ), ( Core Charge: No Core Charge )

Review FORD 6.0l Diesel Engine Passenger Right Rh Cylinder Head Unit Factory Oem fits F250SD F250 2006–2007

The **Ford 5010191R91 Cylinder Head Unit** is a meticulously engineered, high-performance component designed exclusively for the **2006 2007 Ford F-250 Super Duty** equipped with the **6.0L Power Stroke diesel engine**, specifically tailored for the **passenger-side right-hand cylinder head assembly**. This critical aftermarket replacement part is crafted to restore peak engine efficiency, reliability, and longevity, ensuring seamless integration with the original vehicle s powertrain architecture. Engineered from premium, heat-treated materials, this cylinder head unit features precision-machined surfaces, including the combustion chamber, valve seats, and exhaust ports, all optimized to maintain optimal compression ratios and airflow dynamics. The design incorporates **modern valve train components**, such as high-quality valve springs, retainers, and keepers, which are engineered to withstand the extreme pressures and temperatures generated by the 6.0L diesel s turbocharged operation. Additionally, the head is outfitted with **sealed intake and exhaust valve guides**, reducing friction and preventing premature wear, while the **spark plug boss** (where applicable) ensures proper alignment for ignition components. This unit is a **direct-fit replacement**, eliminating the need for extensive modifications, and is compatible with the engine s **EEC-IV or EEC-V fuel injection systems**, depending on the model year. Whether used for routine maintenance, performance upgrades, or engine rebuilds, this cylinder head unit is built to deliver the same level of durability and performance as the original, helping to extend the lifespan of the Power Stroke s robust yet demanding diesel architecture.

### **Pros and Cons of Buying a Ford 5010191R91 (2006-2007 F-250 6.0L Diesel Cylinder Head Unit)**

1. **Direct Fit Replacement** This part is designed as a direct replacement for the original cylinder head unit in the 6.0L Power Stroke diesel engine, ensuring compatibility without modifications.

2. **Improved Reliability** Ford s aftermarket parts, especially those from authorized suppliers, are often built to meet or exceed OEM standards, reducing the risk of premature failure.

3. **Warranty Coverage** If purchased from a reputable dealer or Ford-authorized supplier, it may come with a warranty, providing peace of mind against defects.

4. **Cost-Effective Repair** Replacing a faulty cylinder head unit is often more affordable than overhauling the entire engine, making it a practical solution for common issues like coolant leaks, warped heads, or valve seal failures.

5. **Prevents Further Damage** Ignoring a failing cylinder head can lead to catastrophic engine damage (e.g., blown head gaskets, cracked blocks). Replacing it early prevents costly repairs down the line.

6. **Common Issue Fix** The 6.0L Power Stroke is known for cylinder head failures, particularly in the **passenger-side RH unit (part number 5010191R91)**, making this a widely available and sought-after replacement part.

1. **Potential Quality Variations** While Ford s parts are generally reliable, aftermarket or non-OEM replacements may have inconsistent quality, especially if sourced from untrusted sellers. Counterfeit or low-quality units could fail prematurely.

2. **Installation Complexity** Replacing a cylinder head requires mechanical skill, proper tools (e.g., torque wrench, head gasket kit, gasket scraper), and experience to ensure a proper seal. Improper installation can lead to leaks or misalignment.

3. **Labor Costs** If not DIYing the job, labor charges for professional installation can be high, sometimes exceeding the cost of the part itself.

4. **Additional Components Needed** Beyond the cylinder head, you may need a **new head gasket kit, bolts, seals, and possibly a new water pump or thermostat** if they were compromised during removal.

5. **Timing and Valve Clearance Adjustments** Some 6.0L engines require valve lash adjustments after head replacement, adding to the labor and complexity.

6. **Risk of Recurring Issues** If the underlying cause of the failure (e.g., overheating, poor maintenance) isn t addressed, the new head may fail again. Ensuring the cooling system, oil changes, and fuel system are in good condition is critical.

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### **Conclusion**

The **Ford 5010191R91 cylinder head unit** is a **necessary and cost-effective replacement** for the common passenger-side head failure in the 2006-2007 F-250 6.0L diesel. It restores engine function, prevents further damage, and is widely available. However, the **quality of the part, proper installation, and addressing root causes** (like cooling system issues) are critical to long-term success.

If the engine has been neglected or shows signs of other wear (e.g., oil leaks, exhaust issues), a **full engine inspection** may be warranted before proceeding. For most cases, this part is a **smart investment** to avoid a complete engine rebuild.

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### **Recommendation**

1. **Source from a Trusted Supplier** Purchase from **Ford-authorized dealers, reputable online marketplaces (e.g., RockAuto, Summit Racing), or a local Ford diesel specialist** to avoid counterfeit parts.

2. **Prepare for Installation** Gather the necessary tools, a **head gasket kit (e.g., Fel-Pro or OEM), new bolts, and seals**. Consider a **torque wrench** to ensure proper tightening.

3. **DIY or Professional?** If comfortable with engine work, **DIY installation** saves money. Otherwise, **hire a diesel specialist** familiar with 6.0L Power Stroke engines.

4. **Check for Underlying Issues** Before installing, verify the **cooling system, water pump, thermostat, and fuel system** to prevent future failures.

5. **Follow Ford Service Bulletins** Some 6.0L engines benefit from **SBs addressing head gasket leaks or valve seal failures** consult these before installation.

6. **Budget for Contingencies** Allocate extra funds for **additional components (e.g., new water pump, seals)** that may be needed during the process.

**Final Verdict:** **Buy the part if the engine is otherwise healthy**, but **prioritize proper installation and maintenance** to ensure longevity. For those uncomfortable with engine work, **professional installation is highly recommended**.

Details:

This part comes with a 90 day guarantee.

part #: 5010191r91 prices

• $251.99-$350.02

specifications cylinderheapar:

• for models: F250sd, F250
• for makes: Ford
• for years: 2006-2007
• mpn: 5010191r91
• part type: Engine Cylinder Head Unit
• condition and options: 8-366, Diesel, From 1/16/06, From Engine Id
• manufacturer warranty: 90 Day
• ipn: 306-134
• fitment type: Direct Replacement
• oe spec or performance/custom: Oem Factory Spec
• core charge: No Core Charge

payments cylinderheapar:

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

returns cylinderheapar:

• time: 60 Days
• policy: Returns Accepted
• paid by: Buyer

seller cylinderheapar:

• rating: 99.8%
• # reviews: 79929
• city: Pensacola, Florida

offer cylinderheapar:

• quantity: 1
• sold: 0
• best offers: True
• availability: In Stock
• options: Ship-to-home
• started: April 13, 2026

shipping cylinderheapar:

• class: Standard
• type: Fixed
• cost: $0.00
• transit: 3-8 Days
• carrier: UPS
• service: UPS Ground

general cylinderheapar:

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

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