FORD GR3Z6250B Engine Left Cylinder Head Camshaft 2019-20 5.0L 25k

( Manufacturer Part Number: GR3Z6250B ), ( Type: Cylinder Head Assembly ), ( Oe/oem Part Number: Jl3z6049n / Jl3z6049 / Jl3z-6049-n, Jr3z6250d / Jr3z6250 / Jr3z-6250-d ), ( Items Included: Undefined ), ( Vintage Part: No ), ( Country Of Origin: United States )

Review FORD 2019 20 5.0l Engine Left Side Cylinder Head Camshaft Oem 25k fits MUSTANG

The **Ford GR3Z6250B (2019 2020 Mustang 5.0L Coyote Engine Left Cylinder Head Camshaft)** is a precision-engineered component integral to the performance and reliability of Ford s iconic V8 powerplant, the fifth-generation Coyote engine. This high-performance camshaft is specifically designed for the left cylinder head of the 5.0L naturally aspirated V8, delivering a finely tuned balance of torque, horsepower, and throttle response that defines the Mustang s exhilarating driving experience. Crafted from high-grade forged steel, the camshaft features a meticulously machined profile optimized for the Coyote s aggressive valve timing, ensuring smooth yet dynamic cylinder pressure cycles that enhance both low-end torque and high-revving capability. The GR3Z6250B is engineered to complement Ford s **Dual Independent Variable Cam Timing (DIVCT)** system, allowing real-time adjustments to intake and exhaust camshaft phasing for optimal power delivery across the RPM spectrum. Whether paired with a stock or modified intake manifold, this camshaft is built to withstand the demands of daily driving, track use, or high-performance modifications, offering durability and performance consistency under extreme conditions. Its precise lobe separation angle and lift profile contribute to improved airflow efficiency, reducing pumping losses while maximizing cylinder scavenging, which is critical for maintaining the Mustang s signature blend of raw power and refined drivability. For enthusiasts seeking to preserve or enhance the stock Coyote s performance, this camshaft serves as a critical replacement part, ensuring seamless integration with the engine s advanced valvetrain and fuel delivery systems. Whether replacing a worn component or upgrading for a more aggressive performance profile, the **GR3Z6250B** exemplifies Ford s commitment to engineering a camshaft that elevates both the Mustang s legendary character and its modern engineering prowess.

### Pros and Cons of Buying a 2019-2020 Ford Mustang GT with a 5.0L Coyote Engine (Left Cylinder Head Camshaft Issue)

---

#### **Pros**

1. **Performance and Power**

The 5.0L Coyote engine in the Mustang GT is a high-performance V8 that produces **460 horsepower and 420 lb-ft of torque** (in the base GT). With the optional **Supercharger (GT500)**, it jumps to **647 hp and 625 lb-ft**, making it one of the most powerful naturally aspirated V8s in the segment. The Coyote engine is also known for its smooth operation, strong low-end torque, and quick revving capabilities.

2. **Reliability of the Coyote Engine (When Well-Maintained)**

The 5.0L Coyote engine has improved significantly over previous Ford V8s, with a **direct-injection system, aluminum block, and advanced fuel delivery**. While it has had some early reliability concerns (especially with oil dilution and carbon buildup), later models (including 2019-2020) have seen refinements. Many owners report **fewer issues** if the vehicle has been properly maintained, including regular oil changes (using high-quality synthetic oil) and timely valve cover gasket replacements.

3. **Modern Ford Technology**

The 2019-2020 Mustang GT comes with **Ford s SYNC 3 infotainment system**, which includes a **10.25-inch touchscreen, wireless Apple CarPlay, and Android Auto**. It also features **adaptive cruise control, lane-keeping assist, blind-spot monitoring, and a rearview camera** (in higher trims). The **12-speaker B&O sound system** (in GT Premium) provides excellent audio quality.

4. **Driving Dynamics and Handling**

The Mustang GT is built on a **stiff unibody chassis** with **adaptive dampers**, providing a **balanced mix of comfort and sportiness**. The **10-speed automatic transmission** (in 2020) is smoother and more responsive than its predecessor, with **quick shifts and precise gear selection**. The **rear-wheel-drive layout** and **torsen limited-slip differential** (in GT Premium) enhance traction and cornering performance.

5. **Aftermarket and Modification Potential**

The Mustang GT has a **strong aftermarket support**, with readily available parts for **tuning, suspension upgrades, exhaust systems, and engine modifications**. The Coyote engine is also **easy to work on**, making it a popular choice for enthusiasts looking to push performance further.

6. **Styling and Presence**

The Mustang retains its **iconic pony car styling**, with a **bold front grille, aggressive LED headlights, and a muscular rear**. The **GT badge** adds to its sporty aesthetic, making it stand out on the road.

7. **Fuel Economy (Compared to Other Muscle Cars)**

While not the most efficient vehicle (expect **around 16-18 MPG city and 23-26 MPG highway**), it is **more fuel-efficient than most naturally aspirated V8 muscle cars** from competitors like the Chevrolet Camaro or Dodge Challenger.

---

#### **Cons**

1. **Left Cylinder Head Camshaft Issue (Specific to This Engine)**

The **left cylinder head camshaft** in the 5.0L Coyote engine has been a **known failure point**, particularly in **2015-2018 models**, but some **2019-2020 units have also been affected**. The issue typically manifests as:

- **Rough idle or misfires** (due to camshaft wear or failure).

- **Excessive oil consumption** (sometimes leading to **oil leaks or low oil pressure**).

- **Whining or grinding noises** from the camshaft area.

- **Potential for catastrophic failure** if ignored (though rare).

- **Ford has issued recalls and extended warranties** for this issue, but **some owners may have missed recalls or had the problem go unaddressed**.

- The **camshaft replacement is expensive** (typically **$1,500 $2,500 ** including labor).

- The **left cylinder head may need replacement** if the camshaft bearing is severely damaged.

- **Ongoing oil consumption** can lead to **engine damage** if not managed.

2. **Carbon Buildup and Oil Dilution Issues**

- **Rough idle or hesitation**.

- **Reduced power output**.

- **Misfires or poor acceleration**.

- **Solution:** Regular **intake valve cleaning** (every **50,000 75,000 miles**) is recommended, which adds to maintenance costs.

3. **Oil Consumption and Valve Cover Gasket Failures**

Some Coyote engines (especially in **2015-2017**) have **excessive oil consumption**, sometimes burning **1 quart per 1,000 miles**. This is due to:

- **Worn piston rings or valve seals**.

- **Faulty valve cover gaskets** (which can leak oil and require frequent replacements).

- **Solution:** If oil consumption is high, **engine work may be needed**, adding to long-term costs.

4. **Transmission Issues (2019 Models with 10-Speed Auto)**

- **Slippage or rough shifting** (especially in cold weather).

- **Transmission fluid degradation** if not changed regularly.

- **Potential for electronic glitches** (requiring software updates).

- **Solution:** **Regular transmission fluid changes** (every **60,000 100,000 miles**) are crucial.

5. **Suspension Wear and Tire Costs**

- **Frequent tire replacements** (especially if driven hard).

- **Worn-out bushings, shocks, and struts** (common in high-mileage examples).

- **Solution:** Expect **higher maintenance costs** for suspension and tires.

6. **High Maintenance Costs Overall**

- **Expensive parts** (especially aftermarket or performance upgrades).

- **Labor costs** (Ford dealerships charge premium rates).

- **Potential for unexpected repairs** (e.g., water pump, timing chain, or turbocharger in GT500 models).

7. **Depreciation**

The Mustang GT **holds its value reasonably well**, but it is **not a high-retainer** like some luxury sports cars. If you plan to sell later, **depreciation should be factored into the purchase price**.

8. **Noise and Vibration**

The Coyote engine is **loud at idle and under throttle**, which some buyers find **annoying in stop-and-go traffic**. The **supercharger (in GT500) adds even more noise**, making it less ideal for city driving.

---

### **Ending Conclusion**

The **2019-2020 Ford Mustang GT with a 5.0L Coyote engine** is a **powerful, fun-to-drive muscle car** that offers **strong performance, modern tech, and a cult following**. However, **buying one with a left cylinder head camshaft issue is a significant red flag** that could lead to **expensive repairs** if not addressed immediately.

- **Get a professional inspection** (preferably by a **Ford specialist or Coyote engine expert**).

- **Budget for camshaft replacement** (or consider a **used cylinder head** if available).

- **Check for oil consumption and carbon buildup** these are **common related issues**.

- **Verify maintenance history** (oil changes, valve cover gaskets, transmission fluid).

- **Be prepared for potential future issues** (suspension, tires, transmission).

- **Consider an extended warranty or service contract** if buying used.

- The Mustang GT is a **great choice** for **daily driving and track use**.

- The **aftermarket support** makes it easy to **modify and upgrade**.

- Consider a **used 2021 Mustang GT** (which has **some refinements** to the Coyote engine).

- Alternatively, look at **alternative muscle cars** (e.g., **Chevy Camaro SS, Dodge Challenger SRT Hellcat**) and compare their reliability records.

---

### **Final Recommendation**

- **Do not buy it unless the seller agrees to cover the camshaft replacement cost** (or you can do it yourself).

- **Get a second opinion** from a trusted mechanic before purchasing.

2. **If the

Details:

Mileage: 25K MILES. Please verify it fits and is compatible with your specific model before purchasing. Donor vehicle: 2020 FORD MUSTANG BULLIT FASTBACK COUPE 5.0L V8 RWD MANUAL TRANSMISSION. This item has been previously used.

Color: GREEN B5-DARK HIGHLAND METALLIC EXTERIOR / BLACK KG-EBONY W/GREEN STITCH INTERIOR. Shipping FREE SHIPPING available for most items within lower 48 states.

part #: gr3z6250b prices

• $187.65-$649.99

specifications cylinderheapar:

• for models: Mustang
• for makes: Ford
• mpn: Gr3z6250b
• type: Cylinder Head Assembly
• oe/oem part number: Jl3z6049n / Jl3z6049 / Jl3z-6049-n, Jr3z6250d / Jr3z6250 / Jr3z-6250-d
• items included: Undefined
• vintage part: No
• country of origin: United States

payments cylinderheapar:

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

offer cylinderheapar:

• quantity: 1
• best offers: True
• started: February 5, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock

general cylinderheapar:

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

seller cylinderheapar:

• rating: 99.9%
• city: Traverse City, Michigan
• # reviews: 71582

returns cylinderheapar:

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

shipping cylinderheapar:

• cost: $50.00
• class: Economy
• transit: 4-7 Days
• service: Economy
• type: Fixed

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