fits model: Turbo, Gt, Soul. make: Kia. year: 2020–2025.

( Manufacturer Part Number: 7N4SE021 ), ( Part Type: Engine Cylinder Head ), ( Country Of Origin: Korea, South )
The **Kia 7N4SE021 Soul Turbo GT 1.6L Engine Cylinder Head** is a precision-engineered component designed exclusively for the high-performance variants of Kia s popular Soul Turbo GT models, spanning the production years 2020 through 2025. This cylinder head represents the pinnacle of Kia s engineering for its turbocharged 1.6L Gamma (GDI) gasoline engine, optimized to deliver exceptional power, efficiency, and reliability under demanding driving conditions. Crafted from high-grade cast aluminum alloy, the head features a robust and lightweight design, ensuring optimal heat dissipation while maintaining structural integrity even under the intense thermal and mechanical stresses of forced induction. The head incorporates a dual overhead camshaft (DOHC) architecture with four valves per cylinder (two intake and two exhaust), allowing for precise airflow control and improved combustion efficiency. The intake ports are contoured to maximize velocity and turbulence, enhancing fuel-air mixture preparation, while the exhaust ports are engineered to efficiently expel spent gases, reducing backpressure and supporting the turbocharged system s performance. A key feature of this cylinder head is its integration with the **Kia s 1.6L Turbo GT s variable valve timing (VVT) system**, which dynamically adjusts the timing of both the intake and exhaust camshafts to optimize engine response across the entire RPM range from low-end torque to high-revving performance. The head also includes **hydraulic lifters** for smooth valve operation and **piston cooling jets** to mitigate thermal stress on the valves and seats, extending the lifespan of critical components. For models equipped with **direct injection**, the cylinder head is strategically designed to accommodate the precise fuel spray patterns required for efficient combustion, reducing knock risk and improving fuel economy. Additionally, the head is compatible with Kia s **turbocharged intercooler and intake systems**, ensuring seamless integration with the forced induction setup that propels the Soul Turbo GT to its impressive power figures. Whether for a stock replacement or a high-performance upgrade, this cylinder head is a critical component that contributes to the Soul Turbo GT s blend of urban agility and spirited driving dynamics, making it a standout choice for enthusiasts and mechanics alike.
### **Pros and Cons of Buying a Kia Soul Turbo GT (1.6L Engine, Cylinder Head 7N4SE021, Models 2020-2024/2025)**
#### **Pros**
1. **Performance and Efficiency**
The 1.6L Turbocharged GDI engine (Gamma II) in the Kia Soul Turbo GT delivers strong power output (around 180-200 hp, depending on the model year) while maintaining decent fuel economy for a turbocharged car. The turbocharged engine provides a good balance between acceleration and efficiency compared to naturally aspirated alternatives.
2. **Reliability of Kia s Engine Platform**
Kia s 1.6L Gamma II engine (used in the Soul Turbo GT) has been refined over multiple generations and is generally considered more reliable than some of its competitors turbocharged engines. Kia has improved cooling systems, fuel injection, and turbocharger durability in recent years, reducing common issues like turbo failure or oil dilution.
3. **Turbocharger and Cooling Improvements (2020-2024/2025 Models)**
Later models (especially post-2020) feature upgraded turbochargers with better wastegate control, improved intercoolers, and enhanced oil cooling systems. This reduces the risk of turbo lag and overheating, which were occasional concerns in earlier turbocharged Kias.
4. **Affordability and Availability of Parts**
The Soul Turbo GT is a budget-friendly turbocharged car, making it easier to find replacement parts, labor, and maintenance services. Kia dealerships and independent mechanics are familiar with this engine, which helps in troubleshooting and repairs.
5. **Good Aftermarket Support**
The 1.6L turbo engine has a dedicated aftermarket community, with upgrades like cold air intakes, exhaust systems, and ECU tuning available. This allows owners to further enhance performance if desired.
6. **Compact and Practical Design**
The Soul s hatchback layout provides practicality for daily driving, with a spacious cargo area and easy maneuverability in urban settings. The turbocharged version retains this practicality without sacrificing too much performance.
7. **Warranty Coverage (If Purchased New or CPO)**
If buying from a dealership (new or certified pre-owned), the Soul Turbo GT may still be under warranty, covering the engine and turbocharger for a set period. This can provide peace of mind against major failures.
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#### **Cons**
1. **Turbocharger Reliability Concerns (Early Models)**
Some owners of pre-2020 Soul Turbo GT models reported turbocharger issues, including oil leaks, wastegate failures, or turbo spin-up problems. While later models improved this, it remains a risk if buying an older example without thorough inspection.
2. **Oil Dilution Risk**
Turbocharged engines are prone to oil dilution (fuel mixing with oil) in cold weather, which can thicken the oil and cause starting issues. Regular oil changes with high-quality synthetic oil and proper warm-up procedures can mitigate this.
3. **Cooling System Vulnerabilities**
The 1.6L turbo engine relies on an efficient cooling system. Some owners have experienced radiator or water pump failures, leading to overheating. The turbocharger itself also generates heat, requiring proper intercooler and oil cooler maintenance.
4. **Transmission and Drivetrain Wear**
The Soul Turbo GT is often paired with a 6-speed automatic transmission, which can wear out prematurely if not maintained properly. Some owners report clutch or torque converter issues in manual transmission models.
5. **Resale Value Depreciation**
Like many turbocharged compact cars, the Soul Turbo GT depreciates quickly. If you plan to sell it later, the resale value may not be as high as a non-turbo or hybrid alternative.
6. **Limited High-Performance Tuning Potential**
While the engine can be tuned, it lacks the raw potential of larger turbocharged engines (e.g., 2.0L or 2.4L). For serious performance enthusiasts, other platforms (like the Hyundai Veloster N or Kia Stinger) may offer better upgrade paths.
7. **Potential for Carbon Buildup**
Direct-injection engines like the 1.6L GDI are prone to carbon deposits on intake valves, which can reduce performance and fuel efficiency over time. Regular maintenance (including intake valve cleaning) is recommended.
8. **Noise and Vibration**
Some owners report increased engine noise and vibrations, particularly at higher RPMs, due to the turbocharger and exhaust system design. Sound deadening or exhaust upgrades can help, but it s not a dealbreaker for most.
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### **Conclusion**
The **Kia Soul Turbo GT with the 1.6L engine (7N4SE021) is a solid choice for buyers seeking an affordable, turbocharged compact car with decent performance and reliability**, provided they prioritize maintenance. **Later model years (2021-2024/2025) are preferable due to turbocharger and cooling system improvements**, reducing the risk of major failures. If buying used, **inspect the turbocharger, cooling system, and transmission thoroughly**, and ensure the vehicle has a complete maintenance history.
For **budget-conscious buyers who want a fun, efficient turbocharged car without breaking the bank**, the Soul Turbo GT is a reasonable option. However, **those seeking long-term reliability or high-performance tuning may need to look elsewhere**. If maintenance is consistent, this engine can last well beyond 100,000 miles.
### **Recommendation**
- **Buy New or Certified Pre-Owned (CPO):** If possible, opt for a **2021 or newer model** with a warranty to cover potential turbo or cooling issues. A CPO Soul with a clean service record is a safer bet than an older used example.
- **Inspect Thoroughly if Buying Used:**- Check for **oil leaks around the turbocharger and oil cooler**.
- Verify **cooling system health** (radiator, water pump, hoses).
- Test **transmission smoothness** (no jerking or delayed shifts).
- Review **maintenance records** for oil changes and turbo-related services.
- **Budget for Maintenance:** Allocate extra funds for **regular oil changes (every 5,000-7,500 miles), cooling system flushes, and potential turbo upgrades** if needed.
- **Consider Alternatives if:**- You want **longer warranty coverage** (e.g., Hyundai Veloster N).
- You prioritize **higher performance potential** (e.g., Kia Stinger GT).
- You dislike **compact hatchbacks** (e.g., turbocharged sedans like the Kia K5).
**Final Verdict:** The Kia Soul Turbo GT is a **great entry-level turbocharged car** for those who value affordability, practicality, and decent performance **but only if you re willing to maintain it properly and prefer a smaller, urban-friendly vehicle.** For those seeking a more robust turbocharged platform, other Kia/Hyundai models may be worth considering.
Steering wheel material: Leather steering. Bumper rub strip front: Black front bumper. Full floor coverage. Springs rear: Rear coil springs.
Steering wheel tilt: Manual tilting steering. Adaptive cruise control: Smart Cruise Control SCC. Rear seats fixed or removable: Fixed rear. Cloth headliner material.
Front head restraints: height adjustable front seat restraints. Remote panic alarm. Air conditioning: Yes. Stainless steel single exhaust with chrome tailpipe finisher.
Compressor: Inter cooled Turbo. Start-stop engine: Idle Stop Go ISG auto stop-start engine. Carpet front and rear floor mats. Passenger doors rear right: Conventional right passenger door.
Engine block material: Aluminum engine. Power door mirrors. Transmission fluid temperature warning: temp warning. Smart device-as-key proximity door locks.
Retained accessory power. Fixed third-row windows. Black windshield trim. Everything pictured included.
Battery run down protection. Trip computer. Delay off headlights: Delay-off headlights. Wireless device charging: Front wireless smart charging.
Visor illuminated driver mirror: Illuminated visor mirror. Steering wheel telescopic: Manual telescopic steering. Driver attention monitor: Attention Warning DAW. Rear head restraints: height adjustable rear seat restraints.
Colored bedside insert. Ambient lighting. Rear head restraint control: Manual rear seat control. Exterior temperature display.
Lane departure: Keeping Assist LKA. Cargo floor type: Carpet cargo area. Metal-look door panel insert. Overdrive transmission.
Door mirror type: Standard side mirrors. Manual fuel door release. Key fob joyless entry. Door bins rear: Rear door.
Rear windshield wipers. Drive train delectable: Drive Mode Select driver delectable drive train mode. Fully galvanized steel body panels with side impact beams. Beverage holders rear: Rear beverage.
Analog instrumentation display. Bluetooth hands free wireless device connectivity. Armrests front center: Front seat armrest. Cargo light: area light.
Smart device integration: Apple Carpal Android Auto smart mirroring. Non-metallic paint. Integrated navigation system with voice activation. Wireless streaming: Bluetooth wireless audio streaming.
Power first-row windows. Multi-level cargo floor. Full floor console. Fixed rear windshield.
Rear window defroster. Door handle material: Body-colored door handles. Engine/electric motor temperature gauge. Driver one-touch down window.
LED daytime running lights. Sun visor strip. Sport steering wheel. Trip odometer.
Redundant digital speedometer. Drive type: Front-wheel drive. When purchasing a wire harness cut offs may be present. Deep tinted windows.
Low tire pressure warning. Power driver seat controls: Driver power reclining, lumbar support, cushion tilt, fore/aft control and height adjustable. Steering type: Rack-pinion steering. Seat Belts may not function until they are in the installed position or angle.
Turn signal in door mirrors: indicator mirrors. Illuminated ignition switch. Oil pressure warning. Cylinder Head From a 2022 Kia Soul Turbo.
Manual folding door mirrors. Fob engine controls: Smart Key with hands-free access and push button start. Cargo tie downs: area downs. Key in vehicle warning.
Transmission electronic control. Spare tire location: mounted under the cargo floor. Automatic climate control. Colored front bumper insert.
Visor driver mirror: Driver visor mirror. Drive Mode Select delectable mode transmission. Auto door locks: Auto-locking doors. Springs front: Front coil springs.
Smart device remote start. Driver foot rest. Day/Night review mirror. Visor passenger mirror: Passenger visor mirror.
Split front seats: Bucket seats. Headlight type: Reflector headlights. Suspension ride type rear: Semi-independent rear suspension. Speed sensitive volume.
Special paint: Monotone paint. Heated steering wheel. External memory control. Emergency SOS Capable: UVO Link vehicle integrated emergency system.
Door bins front: Driver and passenger door. Transmission Type: Automatic. Cloth and leatherette rear seat upholstery. LED low and high beam headlights.
Suspension type front: Strut front suspension. Vinyl door trim insert. Metal-look interior accents. Variable intermittent front windshield wipers.
Black side window trim. Digital signal processor. Dual-zone front climate control. Battery charge warning.
Hill start assist. Voice activated audio controls. Rigid cargo cover. Gearshift material: Leather gear shiftier material.
Front reading lights. Concealed cargo storage: Cargo area concealed storage. Lift gate rear cargo door. Cabin air filter.
Armrests rear: Rear seat armrest. Auto headlights: on/off headlight control. Plastic trunk lid trim. Driver lumbar: seat with 2-way power lumbar.
Door mirror style: Black door mirrors. Rear seat folding position: Fold forward rear setback. Radio: AM/FM/digital/. Brake assist system.
Comfort: 60-40 folding rear seats. Child door locks: Manual rear child safety locks. Cruise control with steering wheel mounted controls. Heated front seats: driver and passenger seats.
Spark ignition system. Gas-pressurized shock absorbs. Multiple headlights: enclosed headlights. Pedestrian detection warning.
Digital clock. Rear Occupant Alert ROA rear seat check warning. Illuminated glove box. Airbag occupancy sensor.
High mount stop light: mounted light. Tailgate control: Tailgate/power door lock. Front anti-roll bar. When a listing or says right left it is said in the point of view one sitting car facing forward.
Integrated roof audio antenna. Plastic front setback upholstery. Suspension type rear: Torsion beam rear suspension. Rear seats: bench seat.
Cylinder head material: Aluminum cylinder. Cloth and leatherette front seat upholstery. Four channel ABS brakes. Variable panel light: instrument light.
Visor illuminated passenger mirror: Illuminated visor mirror. Power train type: ICE. Illuminated entry. Full carpet floor covering.
Power second-row windows. Head up display: Head-up display. Door ajar warning: Rear cargo area warning. All-in-one key: remote fob and ignition key.
Speed sensitive steering: power steering. Bumpers front: Body-colored front bumper. Front head restraint control: Manual front seat control. Steering mounted audio control: wheel controls.
Rear camera: mounted camera. Suspension ride type front: Independent front suspension. Grille style: Black grille. Engine Mounting direction: Transverse mounted engine.
Carpet rear setback upholstery. Compact spare tire with steel wheel. Aux input jack: Auxiliary jack. Electronic stability control system.
Mini overhead console. Floor console storage. Bumper rub strip rear: Colored rear bumper. LED front fog lights.
Fade interior courtesy lights. Rear collision warning: Cross-Traffic Collision Avoidance RCCA. Ignition type: Push-button. All-speed ABS and driveling traction control.
Battery type: Lead acid battery. Forward collision warning: Collision-Avoidance Assist-Peed FCA-Peed. Front beverage holders. Rear seat direction: Front facing rear.
Blind Spot Collision Warning. Modules, instruments, and other electronics including stereos may need to be reprogrammed by a dealer before said parts function properly in your vehicle. Electric power-assist steering system. Overhead console storage.
Donor car had 63,913 Miles on the Odometer, Paint code was AJR, Trim WK. First-row sunroof: sliding and tilting glass sunroof with express open/close activation sunshade. Curtain first and second-row overhead airbags. Fuel Type: Regular Unleaded.
Key fob cargo controls: trunk control. Rear under seat ducts: climate control ducts. Passenger doors rear left: Conventional left passenger door. LED brake lights.
Front height adjustable seat belts. Standard ride suspension. Heated door mirrors: driver and passenger side mirrors. Manual passenger seat controls: Passenger manual reclining and fore/aft control.
Low level warnings: warning for fuel, washer fluid and brake. Bumpers rear: Body-colored rear bumper. Vinyl shiftier boot. Alternator Type.
Full headliner coverage. Sequential shift control: with steering wheel controls. Engine Location: Front mounted engine. Ventilated brakes: Front ventilated disc brakes.