MOPAR R8225257AA Engine Cylinder Head Left

( Manufacturer Part Number: R8225257AA ), ( Part Type: Engine Cylinder Head ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Chrysler ), ( Year: 2009 2010 2011 2012 2013 2014 2015 2016 2017 ), ( Parts Included: Only Part Reference 1 On The Diagram Is Included ), ( Item Weight: 36.2 Lb. )

Review MOPAR Genuine Engine Cylinder Head Assembly Left Side Remanufactured fits 2009–2017

The **Mopar R8225257AA Engine Cylinder Head (Left Side)** is a high-performance, precision-engineered component designed exclusively for select Chrysler, Dodge, and Jeep applications, ensuring optimal combustion efficiency and durability in modern high-output engines. Crafted from a high-grade, heat-treated aluminum alloy, this cylinder head is engineered to withstand extreme operating temperatures and pressures, making it an ideal choice for performance-oriented vehicles, including those equipped with supercharged or turbocharged powertrains. The head features a **pent-roof combustion chamber design**, which maximizes airflow and combustion efficiency, resulting in improved horsepower and torque while maintaining reliability. Its **integrated valve seats, guides, and springs** are precision-machined to exacting tolerances, ensuring proper sealing and valve operation, which is critical for preventing leaks and maintaining peak engine performance. The **left-side head** is specifically tailored for left-bank applications, featuring a **single exhaust port** and a **single intake port** configuration, depending on the engine variant, with integrated **spark plug bosses** and **camshaft drive components** for seamless integration with the crankshaft and camshaft system. This part is compatible with **Chrysler 3.6L Pentastar V6, 5.7L HEMI V8, and 6.4L HEMI V8 engines**, among others, and is often utilized in high-performance builds, restorations, or as a replacement for worn or damaged factory heads. Built to meet or exceed OEM specifications, the R8225257AA cylinder head is a critical component for maintaining engine integrity, ensuring consistent power delivery, and extending the lifespan of the entire powertrain. Whether used in a stock application or as part of a modified engine build, this head delivers the strength, precision, and performance demanded by modern driving demands.

### **Pros and Cons of Buying a Used Mopar R8225257AA Engine Cylinder Head (Left Side)**

The **Mopar R8225257AA** is a cylinder head for the **4.7L (281 cubic inch) Magnum V8** engine, commonly found in vehicles like the **Chrysler 300, Dodge Charger, and Jeep Grand Cherokee (2005 2010)**. Below is a detailed breakdown of the advantages and disadvantages of purchasing a used or aftermarket replacement for this part.

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### **Pros of Buying a Used or Aftermarket R8225257AA Cylinder Head**

1. **Cost-Effective Alternative to OEM**

- New OEM cylinder heads can cost **$500 $1,200 ** depending on the source (Chrysler dealer, eBay, or specialty shops). Used or aftermarket heads are often **30 50% cheaper**, making them attractive for budget-conscious buyers.

- Aftermarket heads from reputable brands (e.g., **JE, Edelbrock, or Summit Racing**) may offer **similar performance at a lower price** while sometimes including upgrades like **stainless steel valves or improved flow**.

2. **Performance Potential with Modifications**

- Some aftermarket heads are **ported and polished** for better airflow, which can improve **horsepower and torque** in high-performance applications.

- **High-flow intake and exhaust manifolds** can be paired with these heads for **better breathing**, especially in forced-induction (turbo/supercharged) builds.

- **Stainless steel valves** (common in aftermarket heads) last longer than stock cast-iron valves and resist corrosion better.

3. **Easier Availability Than OEM Parts**

- OEM heads can be **hard to find** due to discontinued production, while aftermarket options are **widely stocked** at auto parts stores and online retailers.

- Used heads from **salvage yards or junkyards** can be a quick fix for those on a tight schedule.

4. **Compatibility with Engine Mods**

- If you re running a **big-block swap, turbo kit, or supercharger**, an aftermarket head may be **necessary** to handle increased airflow and power.

- Some aftermarket heads are **designed for high-RPM applications**, making them suitable for **drag racing or street tuning**.

5. **Potential for Customization**

- Unlike stock heads, aftermarket options may allow for **individual valve adjustments, custom porting, or even nitrous-ready setups**.

- Some aftermarket heads come with **pre-installed gaskets, bolts, or even a new valve spring kit**, reducing assembly time.

6. **Long-Term Durability (If Properly Maintained)**

- While stock heads can **warp or crack** over time due to heat and stress, **high-quality aftermarket heads** (from brands like **JE or Edelbrock**) are often **better cast and machined** for longevity.

- **Stainless steel components** (valves, springs, retainers) reduce wear and extend head life compared to stock parts.

7. **Warranty Options (With Reputable Sellers)**

- Some aftermarket heads come with **limited warranties** (e.g., **90-day to 1-year**), providing peace of mind against manufacturing defects.

- Used heads from **trusted salvage yards** may come with **transferable warranties** or inspection reports.

---

### **Cons of Buying a Used or Aftermarket R8225257AA Cylinder Head**

1. **Quality Control Issues with Used Parts**

- **Salvage yard heads** may have **hidden damage** (cracks, warping, or burnt valves) that isn t immediately visible.

- **No warranty** on used parts means you re responsible for any **pre-existing issues** that arise after installation.

- **Mismatched parts** (e.g., wrong bolt pattern, incorrect valve sizes) can lead to **seizing or catastrophic failure**.

2. **Potential for Poor Fitment**

- Some aftermarket heads are **not a direct drop-in replacement** and may require **modifications** (e.g., **decking, port matching, or spacer installation**).

- **Intake manifold compatibility** can be an issue some aftermarket heads may not fit stock manifolds without **adapters or custom work**.

- **Exhaust port alignment** may need adjustment if paired with **high-flow headers**, leading to **leaks or poor sealing**.

3. **Risk of Improper Machining or Casting Defects**

- **Cheap aftermarket heads** may have **poor casting quality**, leading to **porosity, cracks, or warping** under high heat.

- **Stock heads** are designed for **stock power levels**, and aftermarket heads that are **over-ported for high horsepower** can **overheat or fail** if not properly supported (e.g., with **study heads, upgraded cooling, or fueling**).

- **Valve seat wear** is common in aftermarket heads if they re not **properly serviced** (valve job, seat machining).

4. **Compatibility with Stock Components**

- **Stock rocker arms, pushrods, and lifters** may not work optimally with aftermarket heads, leading to **excessive valve float or poor valve lash**.

- **Spark plug gaps and ignition timing** may need adjustment when switching to an aftermarket head, affecting **fuel economy and drivability**.

- **Oil control rings and piston compatibility** must be verified to prevent **scuffing or engine damage** in high-performance setups.

5. **Installation Challenges**

- **Gasket sealing** can be tricky aftermarket heads may require **special gaskets or RTV sealant** to prevent **leaks or blowouts**.

- **Torque specifications** must be strictly followed to avoid **warping or bolt stretch**, which can lead to **head gasket failure**.

- **Thread repair** may be needed if the **bolt holes are stripped** from a used head.

6. **Potential for Voiding Warranty (If Applicable)**

- If your vehicle is **still under factory warranty**, installing an **aftermarket or used head** may **void the powertrain coverage**.

- Some **aftermarket heads** are not **factory-approved**, meaning **Chrysler/Dodge dealerships may refuse to work on the engine** if issues arise.

7. **Long-Term Maintenance Requirements**

- **More frequent valve adjustments** (if using non-adjustable rockers).

- **Higher tolerance for carbon buildup** in high-performance applications.

- **More sensitive to fuel quality and octane levels** if tuned for high power.

- **Stock heads** are simpler to work on and may be **cheaper to rebuild** in the long run if kept in stock condition.

8. **Resale Value Impact**

- A vehicle with **aftermarket or used heads** may **lose resale value** compared to one with **stock or OEM parts**.

- **Potential buyers** (especially those looking for **stock or modified builds**) may **discount the vehicle** due to perceived risks.

9. **Risk of Overbuilding the Engine**

- If the rest of the engine (block, crank, rods) is **stock or weak**, installing a **high-flow aftermarket head** can **stress components beyond their limits**, leading to **premature failure**.

- **Forced induction (turbo/supercharger)** requires **proper supporting mods** (intercooler, fueling, cooling) to prevent **head failure or detonation**.

10. **Limited Availability of OEM-Level Support**

- Unlike OEM parts, aftermarket heads **do not come with factory technical support** for installation or troubleshooting.

- **Diagnosing issues** (e.g., **leaks, misfires, or overheating**) may require **additional research or specialist help**.

---

### **Conclusion: Should You Buy a Used or Aftermarket R8225257AA Cylinder Head?**

You re on a **tight budget** and need a **quick, affordable fix**.

You **trust the source** (e.g., a **reputable salvage yard with inspection reports**).

You re **not pushing high horsepower** (under **300 350 HP naturally aspirated**).

You **plan to rebuild or replace the head soon** (since used parts have limited lifespan).

You **don t mind potential risks** (hidden damage, fitment issues) for the **short-term savings**.

You want **better airflow and performance** (especially for **turbo/supercharged builds**).

You re **willing to invest in high-quality brands** (JE, Edelbrock, Summit Racing).

You **have experience with engine mods** or are working with a **mechanic who can verify fitment**.

You **need

Details:

Call Us at #818 862 9477. In stock orders ship within 24 hours. With Valves Valve train. Electrical parts are not returnable.

Parts must be resalable and in the original packaging. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

part #: r8225257aa prices

• $612.15-$676.88

specifications cylinderheapar:

• for makes: Mopar
• for years: 2009-2017
• mpn: R8225257aa
• part type: Engine Cylinder Head
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Chrysler
• year: 2009 2010 2011 2012 2013 2014 2015 2016 2017
• parts included: Only Part Reference 1 On The Diagram Is Included
• item weight: 36.2 Lb.

general cylinderheapar:

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

offer cylinderheapar:

• started: May 18, 2026
• sold: 0
• options: Ship-to-home
• quantity: 1
• availability: In Stock

returns cylinderheapar:

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

seller cylinderheapar:

• city: Canoga Park, California
• rating: 99.5%
• # reviews: 4926

payments cylinderheapar:

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

shipping cylinderheapar:

• class: Standard
• type: Fixed
• cost: $48.45
• transit: 4-10 Days
• service: Standard

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