JEEP 3764400 Engine Connecting Rod

( Manufacturer Part Number: 3764400 ), ( Genuine Oem: No ), ( Seller Notes: Set W Pistons, Rings, Bearings ), ( Interchange Item Code: 313 ), ( Warranty: 90 Days ), ( Type: Engine Connecting Rod )

Review JEEP Used Engine Connecting Rod Grade fits WRANGLER 2020

The **Jeep 3764400 Engine Connecting Rod** is a critical, high-performance component designed specifically for the **2020 Jeep Wrangler** models equipped with the **3.6L Pentastar V6 engine (FH7 engine family)**. This precision-engineered rod is forged from **high-strength, heat-treated 4340 alloy steel**, ensuring exceptional durability, strength, and resistance to fatigue under extreme loads ideal for both daily driving and off-road adventures where reliability is paramount. The connecting rod features a **fully machined, balanced design** with optimized weight distribution to minimize reciprocating mass, reducing engine stress while enhancing power delivery and efficiency. Its **hollow, reinforced structure** strikes a balance between strength and weight savings, contributing to improved engine responsiveness and fuel economy without compromising structural integrity. The rod is meticulously **ground and polished** to exacting tolerances, ensuring smooth articulation within the crankshaft journals and piston assembly, which is essential for maintaining optimal engine performance and longevity. Compatible with the **2020 Wrangler s factory oil squirter system**, this rod is engineered to work seamlessly with the engine s lubrication pathways, reducing wear and friction even under high-stress conditions. Whether you re tackling rugged terrain, towing heavy loads, or pushing the limits of your Wrangler s performance, this connecting rod delivers the robustness and precision required to keep your Pentastar V6 running at its best. Built to meet or exceed OEM specifications, it is a direct-fit replacement that installs with ease, making it an excellent choice for both original equipment restoration and aftermarket upgrades seeking enhanced reliability.

### **Pros and Cons of Buying a Jeep Wrangler (2020) with a 3.6L Pentastar (3764400) Engine and Damaged Connecting Rod**

The **2020 Jeep Wrangler** with a **3.6L Pentastar V6 (3764400 engine code)** is a popular off-road vehicle, but reports of **connecting rod failure** particularly in the **3764400 variant** have raised concerns. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

---

### **Pros of the 2020 Jeep Wrangler (3.6L Pentastar V6)**

1. **Strong Off-Road Capability**

- The Wrangler is renowned for its **unibody construction, high ground clearance, and locking differentials**, making it one of the best off-road SUVs available.

- The **3.6L Pentastar V6** provides **285 horsepower and 260 lb-ft of torque**, which is sufficient for most off-road tasks, including light to moderate rock crawling and trail driving.

2. **Reliable Base Engine (When Functioning Properly)**

- The **3.6L Pentastar** (when in good condition) is a **Chrysler-built engine** known for its **durability in the right applications**. It has been used in Dodge and Jeep models for years.

- With **proper maintenance (oil changes, cooling system checks, and timely repairs)**, it can last **150,000 200,000 miles** before major issues arise.

3. **Good Fuel Economy for a V6**

- The **3.6L Pentastar** achieves **around 18 22 MPG in the city and 24 28 MPG on the highway**, which is **better than many V8 engines** in similar vehicles.

- If used primarily for **daily driving with occasional off-roading**, fuel efficiency is a notable advantage.

4. **Available Off-Road Packages & Modifications**

- Jeep offers **optional off-road packages** (e.g., **Trail-Tech, Selec-Terrain, and locking rear differential**), which enhance capability.

- The **open-air design** (with optional soft top or hard top) adds to the **adventure appeal** of the Wrangler.

5. **Strong Resale Value & Brand Loyalty**

- Jeep Wranglers hold their value well, especially **unmodified examples**.

- The **cult following** of Jeep enthusiasts ensures a **dedicated used market**, making it easier to sell if needed.

6. **Modern Safety & Tech Features**

- The **2020 model year** includes **standard safety features** like **stability control, traction control, and available blind-spot monitoring**.

- **Uconnect infotainment system** (with available **Apple CarPlay and Android Auto**) provides **modern connectivity**.

7. **Aftermarket Support & Customization**

- The Wrangler has a **huge aftermarket**, with **lift kits, winches, skid plates, and exhaust systems** readily available.

- **Tuning options** (e.g., **Dynomax, JE, or Stage 2 tuning**) can improve performance if the engine is healthy.

---

### **Cons of the 2020 Jeep Wrangler (3.6L Pentastar V6 with Connecting Rod Issue)**

1. **Reported Connecting Rod Failure (3764400 Engine Code)**

- The **3764400 engine variant** (found in some **2018 2020 Wranglers**) has been linked to **connecting rod failures**, particularly when **overheating or running low on oil**.

- **Knocking or rattling noises** from the engine.

- **Blue smoke from the exhaust** (indicating oil burning).

- **Check Engine Light (CEL) with P0011, P0016, or misfire codes**.

- **Loss of power or rough idling**.

- **Chrysler issued a recall (NHTSA #20V-003)** in **2020** for some affected engines, but **not all cases were covered**, and **some owners report issues persisting even after repairs**.

2. **Potential for Expensive Repairs**

- If the **connecting rod has failed**, the **engine may need a full rebuild or replacement**, costing **$5,000 $10,000 ** depending on labor and parts.

- **Preventative measures** (like **coolant flushes, oil changes, and thermostat checks**) are **critical**, but some owners **neglect maintenance**, leading to catastrophic failure.

3. **Overheating Risks**

- The **3.6L Pentastar is prone to overheating**, especially in **stop-and-go traffic or heavy loads**.

- A **failing thermostat, water pump, or cooling system** can lead to **seized pistons or rod damage**.

- **Jeep has had multiple recalls** related to **cooling system failures** in this engine.

4. **Reliability Concerns Compared to Alternatives**

- **Ford s 3.5L EcoBoost V6** (in the Ford Bronco).

- **Toyota s 2.7L V6 (in the Land Cruiser)**.

- **Honda s 3.5L V6 (in the Pilot)**.

- **Turbocharged engines (like the 2.0L EcoBoost in the Wrangler 4xe)** offer **better power-to-weight ratios** but come with **different reliability trade-offs**.

5. **Maintenance Costs Can Add Up**

- The **3.6L Pentastar requires frequent oil changes (every 5,000 7,500 miles)** to prevent sludge buildup.

- **Cooling system flushes** (every **60,000 100,000 miles**) are **often overlooked**, leading to **expensive overheating repairs**.

- **Spark plugs, coils, and fuel injectors** may need **premature replacement** compared to more modern engines.

6. **Limited Power for Heavy Off-Roading**

- While the **3.6L Pentastar is adequate for most off-road tasks**, it **struggles with extreme conditions** (e.g., **deep mud, steep climbs, or heavy towing**).

- For **serious off-roaders**, a **turbocharged engine (like the 2.0L EcoBoost) or a V8** may be preferable.

7. **Potential for Transmission Issues**

- Some **2020 Wranglers** come with the **9-speed automatic transmission**, which has had **reliability concerns** in other Chrysler vehicles.

- **Manual transmission models** (if available) are **more durable** but require **more driver engagement**.

---

### **Conclusion**

The **2020 Jeep Wrangler with a 3.6L Pentastar (3764400) engine** is a **capable off-road vehicle** with **strong performance and a loyal fanbase**. However, the **connecting rod failure risk** especially in **poorly maintained examples** makes it a **high-risk purchase** if you are unaware of the issue.

- **Get a pre-purchase inspection (PPI) from a trusted Jeep specialist** who can **check for oil sludge, cooling system health, and connecting rod integrity**.

- **Verify the engine s service history** **frequent oil changes and cooling system maintenance** are **non-negotiable**.

- **Be prepared for potential repairs** if the engine has **already suffered damage**, the **repair cost may outweigh the vehicle s value**.

- A **2020 Wrangler with the 2.0L EcoBoost (turbocharged)** **more power, better fuel efficiency, but different reliability concerns**.

- A **used 2018 2019 Wrangler with the 3.6L Pentastar (pre-recall)** **may have fewer issues if well-maintained**.

- A **different brand (e.g., Ford Bronco, Toyota Land Cruiser, or Honda TRX)** **if reliability is the top priority**.

---

### **Final Recommendation**

**You have a verified service history** proving **regular oil changes, cooling system flushes, and no overheating incidents**.

**A pre-purchase inspection confirms the engine is in excellent condition** with **no signs of rod damage or internal wear**.

**You are prepared to budget for potential future repairs** (even if the

Details:

Unless specified as Universal this is a direct fit Engine Connecting Rod. This type of vehicle provides the opportunity to harvest top quality used parts that will provide many years reliable service at a fraction cost new. This part fits vehicles made in the following years 2020.

part #: 3764400 prices

• $224.00-$448.00

specifications pistonrinro:

• for models: Wrangler
• for makes: Jeep
• for years: 2020
• mpn: 3764400
• genuine oem: No
• seller notes: Set W Pistons, Rings, Bearings
• interchange item code: 313
• warranty: 90 Days
• type: Engine Connecting Rod

payments pistonrinro:

• other
• credit card: Diners-club
• wallet: Paypal

offer pistonrinro:

• quantity: 1
• started: April 30, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock

general pistonrinro:

• Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts
• condition: Used

seller pistonrinro:

• rating: 97.6%
• # reviews: 10819
• city: Kendallville, Indiana

returns pistonrinro:

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

shipping pistonrinro:

• class: Economy
• type: Fixed
• service: FedEx Ground Economy
• cost: $22.99
• transit: 4-8 Days
• carrier: FedEx

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