1. Cylinder Heads & Parts Engines Components For Sale
  2. sku: 12262578878202723
  3. JEEP RL143397AB

JEEP RL143397AB Left Driver Engine Motor Cylinder Head 5.7

fits model: Cherokee, Grand. make: Jeep. year: 2006–2008.

Rl143397ab Jeep 06-08 Grand Cherokee 5.7 Left Driver Side Engine Motor Cylinder Head

( Manufacturer Part Number: RL143397AB ), ( Interchange: 306-120 ), ( Type: Cylinder Head ), ( Id: 2281af80-6dbf-4281-b6ce-11c92ac40911 ), ( Country Of Origin: United States )

Review JEEP 5.7 Left Driver Side Engine Motor Cylinder Head fits CHEROKEE GRAND 2006–2008

The **Jeep RL143397AB 5.7L (304 cubic inch) Engine Cylinder Head** for the **2006-2008 Cherokee (XJ platform)** is a precision-engineered component designed to deliver reliable performance and durability in one of the most iconic off-road vehicles of its era. This cast aluminum cylinder head, part of the iconic **AMC/Jeep 5.7L V8 engine family**, features a robust design optimized for high torque and smooth operation, making it a staple in both stock and modified applications. The head is engineered with **four valves per cylinder** (intake and exhaust) arranged in a **pent-roof configuration**, ensuring efficient airflow and improved combustion for enhanced power delivery. The **pushrod-operated valve train** is complemented by **hydraulic lifters**, eliminating the need for regular valve adjustments and reducing maintenance demands, while the **integrated valve cover** houses the rocker arms and pushrods, providing a streamlined and protected assembly. This cylinder head is compatible with the **EFI (Electronic Fuel Injection) system** common to the 2006-2008 Cherokee, offering precise fuel metering for optimal engine performance. Built to withstand the rigors of both on-road and off-road driving, this component is forged from high-quality aluminum alloy, offering a strong yet lightweight solution that contributes to the vehicle s legendary towing and hauling capabilities. Whether used in a restored classic, a high-performance build, or a daily driver, this cylinder head ensures dependable operation, making it an essential replacement for engines experiencing wear, leaks, or performance degradation. Its compatibility with aftermarket upgrades, such as performance camshafts or high-flow intake manifolds, further extends its versatility, allowing enthusiasts to tailor their Jeep s power output to their specific needs.

### **Pros and Cons of Buying a 2006-2008 Jeep Cherokee (5.7L HEMI, Left-Hand Drive, Engine Code RL143397AB)**

#### **Pros:**

1. **Powerful Engine** The 5.7L HEMI V8 is one of the most reliable and capable engines of its era, producing strong torque and acceleration. It s a great choice for towing, off-roading, and highway driving.

2. **Strong Resale Value** The 5.7L HEMI holds its value better than many other V8 engines from this period, especially when well-maintained.

3. **Durability** With proper maintenance, the 5.7L HEMI can last well over 200,000 miles. The engine is known for its robustness in both on-road and off-road conditions.

4. **Aftermarket Support** There is a vast array of aftermarket parts, upgrades, and tuning options available for the 5.7L HEMI, including performance chips, exhaust systems, and suspension upgrades.

5. **Classic Jeep Appeal** The 2006-2008 Cherokee (XJ generation) has a cult following. Its rugged styling and off-road capabilities make it a desirable classic for enthusiasts.

6. **Good Towing Capacity** The 5.7L HEMI can tow up to 5,000 lbs with the right setup, making it suitable for light-duty towing.

7. **Available Off-Road Features** Many models come with options like locking rear differentials, skid plates, and higher ground clearance, which enhance off-road performance.

8. **Reliable Transmission Options** The 5-speed manual and 4-speed automatic (with proper maintenance) are both durable, though the automatic can be finicky if neglected.

---

#### **Cons:**

1. **Fuel Economy** The 5.7L HEMI is thirsty, averaging around **12-15 MPG combined**, making it expensive to operate compared to modern engines.

2. **Maintenance Costs** While the engine itself is reliable, parts like the transmission, suspension, and electrical components can be costly to replace if they fail.

3. **Electrical Issues** The XJ Cherokee is known for electrical gremlins, including faulty sensors, wiring problems, and intermittent issues with the infotainment system.

4. **Rust Concerns** Many early 2000s Jeeps suffer from rust, especially in the wheel wells, frame rails, and undercarriage. A thorough inspection is essential.

5. **Comfort & Modern Standards** The ride quality is firm compared to modern SUVs, and features like modern safety tech (blind-spot monitoring, backup cameras) are often missing.

6. **Transmission Problems (Automatic Models)** Some 4-speed automatics (especially in older models) can develop slipping or rough shifting issues over time.

7. **Interior Wear & Tear** The plastics and upholstery in older Cherokees can be worn out, and the cabin may lack modern amenities like heated seats or advanced infotainment.

8. **Recall & Safety Concerns** Some models from this era had recalls for airbag issues, fuel pump failures, or transmission problems. Always check for open recalls.

9. **High Mileage Risks** If the vehicle has excessive mileage (over 200,000 miles), major components like the engine, transmission, or suspension may need replacement soon.

10. **Limited Modern Tech** No Apple CarPlay, Android Auto, or advanced driver-assistance systems driving feels outdated by today s standards.

---

### **Conclusion:**

The **2006-2008 Jeep Cherokee with a 5.7L HEMI** is a **great choice for enthusiasts who prioritize power, off-road capability, and durability** over modern comforts and fuel efficiency. It s ideal for those who:

- Want a **reliable, high-performance SUV** for towing or rough terrain.

- Are willing to **budget for maintenance and fuel costs**.

- Appreciate **classic Jeep styling and aftermarket potential**.

However, it may **not be the best fit** for:

- **Everyday commuters** who need fuel efficiency and modern tech.

- **Budget-conscious buyers** who can t afford potential repairs.

- **Those who dislike firm ride quality or outdated interiors**.

---

### **Recommendation:** If you find a **well-documented, low-mileage (under 150,000 miles) example** with:

**No major rust issues**

**Full service records** (especially oil changes, transmission fluid, and timing belt if applicable)

**No transmission or electrical problems**

**A strong buyer s market** (good price relative to comparable Jeeps)

then it can be a **fantastic purchase** for the right owner.

**Best for:** Off-roaders, towing enthusiasts, and Jeep purists who don t mind sacrificing modern conveniences for raw power and character.

**Avoid if:** You need a **fuel-efficient, low-maintenance, tech-loaded SUV** consider a modern alternative instead.

**Final Tip:** Always **get a pre-purchase inspection** and **check for open recalls** before buying. If the price is too good to be true, it likely is verify the engine s history and condition thoroughly.

Details:

Over 6,000 vehicles in the yard and more arriving daily. Cylinder Head. Redeliver, limited access fees. This item is from a 08 JEEP GRAND CHEROKEE.

If listing states free shipping, shipping is within the 48 only. Over 600,000 parts on inventory. Local delivery available to local businesses only. Model: JEEP GRAND CHEROKEE.

Also, any tests that can possibly be done prior to installation should completed at time.

part #: rl143397ab prices

  • $479.00-$499.00

specifications cylinderheapar:

  • for models: Cherokee, Grand
  • for makes: Jeep
  • for years: 2006-2008
  • mpn: Rl143397ab
  • interchange: 306-120
  • type: Cylinder Head
  • id: 2281af80-6dbf-4281-b6ce-11c92ac40911
  • country of origin: United States

returns cylinderheapar:

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

seller cylinderheapar:

  • rating: 100.0%
  • # reviews: 35229
  • city: Cochranton, Pennsylvania

general cylinderheapar:

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

shipping cylinderheapar:

  • cost: $145.00
  • transit: 3-7 Days
  • service: Standard
  • type: Fixed
  • class: Standard

payments cylinderheapar:

  • other
  • wallet: Paypal
  • credit card: Discover

offer cylinderheapar:

  • quantity: 1
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • started: June 8, 2026
for models: cherokee, grand, for makes: jeep, for years: 2006-2008, interchange: 306-120, type: cylinder head, id: 2281af80-6dbf-4281-b6ce-11c92ac40911, country of origin: united states,
category: auto parts > car truck parts accessories > engines engine parts > cylinder heads, sku: 12262578878202723,
Jeep RL143397AB Is Similar To:
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5 offers $479.00–$499.00 USD
  • New. Offer #1 priced at $499.00 + $0.00 shipping estimate = $499.00* total. Chrysler 300: 2006 2008. Jeep Dodge series.FREE SHIPPING
  • New. Offer #2 priced at $479.00 + $0.00 shipping estimate = $479.00* total. Jeep Dodge Other.FREE SHIPPING
  • New. Offer #3 priced at $499.00 + $0.00 shipping estimate = $499.00* total. FREE SHIPPING
  • New. Offer #4 priced at $668.99 + $0.00 shipping estimate = $668.99* total. FREE SHIPPING
  • Used. Offer #5 priced at $285.00 + $145.00 shipping estimate = $430.00* total. Cylinder Head Model: JEEP GRAND CHEROKEE.+$145.00 shipping

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