fits model: Cherokee, Flex, Grand. make: Jeep.

( Manufacturer Part Number: 68298025AB ), ( Vintage Part: No ), ( Items Included: Connecting Rod ), ( Type: Piston Ring )
The **2016-2026 Jeep 2.4L EcoTec4 Flex-Fuel Engine Right Piston Ring and Connecting Rod Assembly (Part #68298025AB)** is a precision-engineered component designed to maintain the peak performance and longevity of Jeep s renowned 2.4-liter inline-four cylinder powerplant. This high-quality aftermarket replacement is meticulously crafted to meet or exceed OEM specifications, ensuring a seamless fit and reliable operation within the engine s critical combustion chamber. The **right piston ring** is engineered from durable, heat-resistant materials, such as cast iron or high-grade steel, to withstand the intense pressures and temperatures generated during combustion while minimizing oil consumption and maximizing compression efficiency. Its precise gap and contour are calibrated to optimize sealing performance, reducing blow-by and preventing excessive wear on the cylinder walls, which is particularly vital for flex-fuel applications where ethanol blends can introduce additional chemical stresses.
Complementing the piston ring is the **connecting rod**, a forged steel component forged to exacting tolerances to endure the immense forces transmitted between the piston and crankshaft during high-RPM operation. The rod s robust construction ensures minimal flex or distortion under load, maintaining structural integrity even under extreme acceleration or towing conditions. The **connecting rod bolt** is often included as part of this assembly, featuring a high-strength, torque-to-yield design to prevent loosening and ensure consistent clamping force on the piston pin. Together, these components form a critical linkage in the engine s power delivery system, directly influencing fuel efficiency, power output, and overall durability especially in high-mileage or performance-oriented applications.
This replacement assembly is ideal for Jeep Cherokee, Grand Cherokee, and other models equipped with the 2.4L EcoTec4 engine, offering a cost-effective alternative to OEM parts without compromising on quality. Whether addressing wear from normal engine use, addressing oil consumption issues, or performing a routine maintenance overhaul, this kit provides a straightforward upgrade that restores engine performance to factory specifications. Built to withstand the demands of modern driving including stop-and-go traffic, highway cruising, and occasional towing this assembly ensures that the engine operates with the same reliability and efficiency as when it was new, extending the lifespan of the entire powerplant.
### **Pros and Cons of Buying a 2016-2026 Jeep Cherokee with a 68298025AB 2.4L Flex-Fuel Engine (Piston Ring & Connecting Rod Issue)**
#### **Pros**
1. **Reliable Base Engine** The 2.4L Flex-Fuel engine (also known as the *225* or *2.4L MultiAir*) is a well-established design used in multiple Jeep and Chrysler models. While it has had some issues, it is generally more dependable than some of its competitors in the compact SUV segment.
2. **Flex-Fuel Capability** The ability to run on E85 (85% ethanol) can provide cost savings in regions where ethanol blends are widely available. This flexibility can be advantageous for drivers who want to reduce fuel costs without switching vehicles.
3. **Decent Fuel Economy** Compared to larger V6 or turbocharged engines, the 2.4L naturally aspirated engine offers reasonable fuel efficiency, typically around **20-22 MPG city and 26-28 MPG highway**, depending on transmission and drivetrain.
4. **Affordable Maintenance** Parts for this engine are widely available and generally less expensive than those for turbocharged or high-performance engines. Basic maintenance (oil changes, spark plugs, etc.) is straightforward and cost-effective.
5. **Jeep s Resale Value** Jeep Cherokee models, especially those with the 2.4L engine, hold their value reasonably well compared to some competitors. This can be beneficial if you plan to sell or trade in the vehicle in the future.
6. **Available in Multiple Trims** The 2.4L engine is offered across various trims, including the **S, Sport, Limited, and Overland**, allowing buyers to choose features and pricing that fit their needs.
7. **Proven Durability in Some Cases** Many owners report that with proper maintenance (regular oil changes, using high-quality fuel, and addressing minor issues early), the 2.4L engine can last **150,000 to 200,000 miles** without major failures.
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#### **Cons**
1. **Piston Ring and Connecting Rod Issues** The most significant concern with this engine is **internal wear**, particularly **piston ring failure and connecting rod damage**, often caused by:
- **Lack of proper lubrication** (low oil levels, poor oil quality, or extended oil change intervals).
- **Ethanol-related fuel dilution** (E85 can break down engine components faster if not properly maintained).
- **Overheating** (which can lead to catastrophic failure).
These issues typically manifest as:- **Blue smoke from the exhaust** (indicating oil burning).
- **Knocking or ticking noises** (signs of rod or ring wear).
- **Loss of power or rough idle** (due to compression loss).
If ignored, this can lead to **a complete engine failure**, which is **extremely expensive to repair** (often **$3,000 $5,000 ** for a rebuild or replacement).
2. **MultiAir Valvetrain Problems** The **MultiAir system** (used to control valve timing) has been criticized for **reliability issues**, including:
- **Actuator failures** (leading to misfires or rough running).
- **Electrical gremlins** (requiring frequent recalibrations or replacements).
While not directly related to the piston/rod issue, these problems add to the engine s maintenance burden.
3. **Timing Chain Wear** Some owners report **timing chain stretch or guide wear**, which can lead to **timing issues, oil leaks, or chain failure**. Replacing the timing chain and related components can be a **costly repair** ($1,000 $2,000).
4. **Transmission Concerns (If Equipped with 9-Speed Auto)** The **9-speed automatic transmission** paired with the 2.4L engine has had **some reliability issues**, including:
- **Delayed engagement or rough shifting**.
- **Electrical problems** (shift solenoids, torque converter failures).
While not directly tied to the engine, these issues can compound ownership frustrations.
5. **Ethanol Fuel Risks** Running **E85 (85% ethanol)** can accelerate wear on **rubber seals, gaskets, and plastic components** in the fuel system. Over time, this can lead to:
- **Fuel pump failures**.
- **Fuel line cracks or leaks**.
- **Accelerated degradation of the fuel system**.
6. **Resale Value Drops with Known Issues** If the vehicle has a history of **piston ring or connecting rod problems**, its resale value will be significantly lower than a well-maintained example. Buyers may avoid these engines due to their reputation for failure.
7. **Potential for Hidden Damage** If purchasing a used Cherokee with this engine, there is a risk that:- The seller may not disclose **previous internal engine damage**.
- A **scoped engine** (one that has already had piston rings or rods replaced) may still fail prematurely if maintenance was poor.
- **Oil consumption** (common in worn engines) may go unnoticed until it s too late.
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### **Key Considerations Before Buying**
1. **Engine History & Maintenance Records**
- **Ask for full service records**, especially oil change history. Engines with **regular oil changes (every 5,000 7,500 miles)** and **high-quality synthetic oil** are far more likely to last.
- **Check for signs of oil burning** (blue smoke, carbon buildup on spark plugs, excessive oil consumption).
- **Get a pre-purchase inspection (PPI)** from a **Jeep specialist** to check for:- **Compression levels** (low compression piston ring failure).
- **Oil pressure readings** (low pressure potential rod bearing wear).
- **Exhaust smoke** (blue smoke oil burning, white smoke coolant leak).
- **Timing chain condition** (stretch or noise).
2. **Ethanol Fuel Usage**
- If the vehicle runs on **E85**, ensure the owner has **properly maintained the fuel system** (fuel injectors, lines, pump).
- Consider **sticking to E10 (regular gasoline)** if you want to extend engine life, though this may reduce fuel savings.
3. **Budget for Potential Repairs**
- **Piston ring replacement** (if caught early) can cost **$1,500 $2,500**.
- **Connecting rod replacement** (if the engine is severely damaged) can exceed **$3,000 $5,000**.
- **Full engine rebuild** may be necessary in extreme cases, costing **$4,000 $6,000 **.
- **Be prepared for additional costs** (labor, diagnostic fees, potential transmission issues).
4. **Alternative Engines in the Cherokee**
- If reliability is a priority, consider models with:- **2.0L Turbo (2017 )** More efficient but has its own turbo-related issues.
- **3.0L V6 (2011 2016)** More powerful but less fuel-efficient.
- **2.4L (2011 2016, pre-MultiAir)** Older but generally more reliable than the 2016 version.
5. **Buying Used vs. New**
- **New/CPO (Certified Pre-Owned)**: If buying new, Jeep offers **extended warranties** that may cover engine issues.
- **Used (2016 2020)**: Higher risk of piston/rod issues; **inspect thoroughly**.
- **Used (2021 2026)**: Some improvements were made, but the 2.4L is still not the most reliable option.
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### **Final Recommendation**
**Buy the 2016-2026 Jeep Cherokee with the 68298025AB 2.4L Flex-Fuel engine only if:****You have verified it has been well-maintained** (regular oil changes, no history of overheating, no blue smoke).
**You are prepared for potential engine issues** and have a **repair budget** set aside.
**You plan to keep it for a short term (3 5 years)** and can monitor its condition closely.
**You are comfortable running E10 (regular gasoline)** to reduce ethanol-related wear.
**You find a vehicle with a clean history** (no previous piston/rod failures, no excessive oil consumption).
**Avoid buying this engine if:****You cannot afford a major engine repair** ($3,000 ).
**The seller cannot provide full maintenance records**.
**There are visible signs of oil burning or knocking noises**.
**You want a long-term, low-maintenance vehicle** (consider a different engine or model).
**You plan to run E85 frequently** without proper fuel system upgrades.
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### **Best Alternatives**
If reliability is your top priority, consider
MILEAGE: 7K MILES. BODY TYPE: SPORT UTILITY 4-DOOR SUV. DRIVE TYPE: FOUR WHEEL 4WD. TRANSMISSION: 8-SPEED AUTOMATIC 850RE / DFT.