fits model: Wrx. make: Subaru. year: 1925–2024.

( Manufacturer Part Number: 36101FL031 ), ( Part Type: Motor Engine Throttle Pedal ), ( Manufacturer Warranty: 90 Day ), ( Ipn: 699- ), ( Fitment Type: Direct Replacement ), ( Core Charge: No Core Charge ), ( Oe Spec Or Performance/custom: Oem Factory Spec )
The **Subaru 36101FL031 2.4L FA24S Engine** a high-performance powerplant designed for the **2022 2025 WRX (STI) models** represents the pinnacle of Subaru s engineering prowess in the realm of turbocharged, front-wheel-drive sports sedans. This meticulously crafted engine is the heart of the WRX s legendary driving dynamics, delivering a seamless blend of raw power, precision, and reliability that has made Subaru a force to be reckoned with in motorsport and street performance. The **FA24S** architecture builds upon the proven foundations of its predecessors while incorporating cutting-edge advancements in cylinder deactivation, forced induction, and fuel delivery to maximize efficiency and responsiveness. With a **2.4-liter horizontally opposed (flat) four-cylinder** configuration, this engine maintains Subaru s signature boxer layout, which not only enhances weight distribution for superior handling but also allows for a lower center of gravity, contributing to the WRX s razor-sharp cornering capabilities. The **turbocharged** setup, featuring a **single-scroll turbocharger**, ensures rapid spool-up and linear power delivery, eliminating the dreaded turbo lag that plagues many forced-induction engines. The **22-25 WRX model** iteration of this engine is tuned for optimal performance, producing a **thrilling 305 horsepower and 295 lb-ft of torque** (in its standard form), though aftermarket tuning and high-performance upgrades can push these figures even further, unlocking the true potential of the FA24S.
At the core of the **36101FL031** engine s performance is its **direct-injection and port-injection hybrid fueling system**, which enhances throttle response and combustion efficiency while minimizing fuel consumption. The **variable valve timing (VVT)** on both the intake and exhaust camshafts optimizes airflow at all RPM ranges, ensuring peak performance whether cruising on the highway or redlining in a high-speed drift. The **direct-injection system** also plays a crucial role in maintaining cylinder pressure and reducing knock, allowing for higher compression ratios and more aggressive tuning without sacrificing reliability. The **throttle gas accelerator pedal** part of the WRX s advanced **drive-by-wire** system is finely calibrated to provide instantaneous and precise feedback, allowing drivers to modulate power delivery with surgical precision. Whether executing a quick lane change or launching from a stoplight, the pedal s responsive nature, combined with the engine s near-instantaneous turbo response, creates an exhilarating driving experience that is both engaging and rewarding.
Beyond its performance credentials, the **36101FL031** engine is engineered with **durability and longevity** in mind, incorporating high-strength materials and advanced cooling technologies to withstand the stresses of both daily driving and aggressive use. The **aluminum cylinder block and head** are precision-machined to minimize friction and heat, while the **intercooler and oil cooler** systems ensure that the turbocharger and engine components operate within optimal temperature ranges, preventing thermal degradation. The **oil pump and lubrication system** are robustly designed to handle the demands of high-RPM operation and forced induction, reducing wear and extending the engine s lifespan even under extreme conditions. Additionally, Subaru s **Subframe Integrated Body (SIB) architecture** and **AWD Symmetrical All-Wheel Drive** system integrate seamlessly with the engine, ensuring that power is distributed efficiently to all four wheels, enhancing traction and stability in both street and track applications.
For enthusiasts and performance tuners, the **36101FL031** engine offers a **highly modifiable platform**, with aftermarket support ranging from **intake and exhaust upgrades** to **turbocharger swaps, fuel system enhancements, and ECU remapping**. The WRX s **open architecture** makes it a favorite among tuners, allowing for modifications that can push power outputs well beyond factory specifications while maintaining reliability. Whether paired with a **high-flow air intake**, a **downpipe for improved exhaust flow**, or a **custom ECU tune**, the FA24S engine s potential is virtually limitless. The **throttle pedal s electronic calibration** also allows for customization, enabling drivers to fine-tune the feel of acceleration to their exact preferences, whether they prefer a sporty, linear response or a more aggressive, aggressive pedal feel.
In summary, the **Subaru 36101FL031 2.4L FA24S engine** the powerhouse behind the **2022 2025 WRX (STI)** is a masterclass in modern automotive engineering. It combines **raw performance, advanced technology, and Subaru s legendary reliability** to deliver an engine that is as capable on the street as it is on the track. Whether you're a daily driver seeking an adrenaline-fueled experience or a performance enthusiast looking to push the limits of your WRX, this engine provides the perfect foundation for an exhilarating and rewarding driving adventure.
### **Pros and Cons of Buying a Subaru 36101FL031 (2022 2025 WRX 2.4L FA24 Engine with Throttle/Gas Pedal)**
#### **Pros**
1. **High Performance and Tuning Potential**
- The **FA24 2.4L EJ257-based engine** (with a revised cylinder head and turbo setup) produces **300 horsepower** from the factory, making it one of the most capable naturally aspirated turbocharged engines in its class.
- It benefits from **Subaru s proven EJ257 architecture**, which is known for reliability when maintained properly.
- The **turbocharger (Garrett GT1840R)** is more efficient than older WRX units, reducing lag and improving throttle response.
- **Extensive aftermarket support** easy to find upgrades (turbo kits, intercoolers, fueling solutions, and ECU tuning) to push power further (400 500 HP with proper modifications).
2. **Reliability (Compared to Older WRX Engines)**
- The **EJ257 engine** has been refined over generations, with **improved oil control rings, stronger internals, and better cooling** compared to the older **EJ255 (2014 2017 WRX)**.
- The **direct-injection system** (unlike older port-injected WRX engines) reduces carbon buildup issues, though **regular maintenance is still critical**.
- **Turbocharger reliability** is better than the **2014 2017 WRX s Garrett GT1840**, which had more common failures. The **2022 GT1840R** is more durable but still requires **proper oil changes and cooling**.
3. **Driving Experience and Handling**
- The **WRX s AWD system (Symmetrical AWD)** provides excellent traction in all conditions, making it great for both street and track use.
- **Sharp handling** with a **stiff chassis** (especially in **STI or rally-oriented builds**) and **responsive steering**.
- **Manual transmission (optional)** is a great choice for enthusiasts who prefer a more engaging driving experience.
4. **Resale Value and Market Demand**
- The **2022 2025 WRX** is still relatively new, meaning **better resale value** compared to older WRX models.
- **High demand** from tuners and drift enthusiasts keeps prices stable, though **well-maintained examples hold value better**.
- **Subaru s reputation for longevity** (when maintained) makes it a safer long-term investment than some competitors.
5. **Cost of Ownership (Compared to Other Performance Cars)**
- **Lower running costs** than a **Turbocharged 4-cylinder (TFSI) or V6** in similar performance segments (e.g., **BMW M240i, Audi S3**).
- **Cheaper insurance** than a **Nissan GT-R or Porsche 718 Cayman** in many regions.
- **Easier to modify** than a **high-end German or Japanese supercar**, making it more accessible for enthusiasts.
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#### **Cons**
1. **Maintenance Requirements**
- **Oil changes every 5,000 7,500 miles** (or as recommended by the manufacturer) are **critical** to prevent turbo and engine wear.
- **Coolant changes every 5 years** (or 60,000 miles) to prevent **head gasket failure** (a known issue in older EJ engines).
- **Timing belt replacement every 105,000 miles** (or 7 years) is **non-negotiable** failure can destroy the engine.
- **Carbon buildup** from direct injection can clog intake valves over time, requiring **professional cleaning every 50,000 70,000 miles**.
2. **Turbocharger and Cooling System Weaknesses**
- The **turbocharger (Garrett GT1840R)** is more reliable than older units but **still requires proper oil cooling** (intercooler oil cooler, sump cooling).
- **Wastegate oil leaks** can occur if the **turbo isn t properly supported** (common in high-power builds).
- **Intercooler and charge pipe failures** are more frequent than in older WRX models due to **higher boost pressures in tuned builds**.
3. **Rust and Body Issues**
- Subarus are **prone to rust**, especially in **snowy or salted regions**. Check for:- **Wheel wells**
- **Rocker panels**
- **Suspension components (control arms, subframe)**
- **Electrical gremlins** (e.g., **faulty sensors, wiring harness issues**) can be frustrating to diagnose.
4. **Limited Factory Power (Unless Tuned)**
- The **stock 300 HP** is **decent but not elite** compared to **tuned examples (400 HP)** or **direct competitors (e.g., Ford Focus ST, Honda Civic Type R)**.
- **No factory turbocharger upgrade path** if you want more power, you ll need to **modify it yourself**.
5. **Driving Comfort and Practicality**
- **Harsh ride quality** compared to **German or Japanese luxury sedans** (e.g., **BMW 3 Series, Toyota GR86**).
- **Small interior** (tight rear seats, limited cargo space) makes it **less practical for daily use**.
- **Manual transmission** (if equipped) can be **tiring on long drives** compared to an **automatic**.
6. **Potential Hidden Issues**
- **Oil leaks** from **valve cover gaskets, oil filter housing gasket, or turbo oil feed lines**.
- **Exhaust manifold cracks** (especially on **high-mileage examples**).
- **Transmission issues** (if automatic) with **rough shifting or delayed engagement**.
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### **Conclusion**
The **2022 2025 Subaru WRX (36101FL031, FA24 engine)** is a **fantastic choice for enthusiasts** who want a **high-performance, tunable, and reliable** AWD hot hatch. It offers **better reliability than older WRX engines**, **strong aftermarket support**, and **excellent handling**, making it ideal for **drift, track days, and street tuning**.
However, it **requires diligent maintenance** (especially **oil changes, cooling system care, and turbo support**) to avoid costly failures. If you **plan to modify it**, budget for **upgrades like a sump cooler, upgraded intercooler, and fueling system** to prevent damage.
**Best for:**- **Enthusiasts who want a tunable, AWD performance car**
- **Those who prioritize reliability and aftermarket support**
- **Drivers who enjoy manual transmissions and sharp handling**
- **People who don t mind some rust and maintenance quirks**
**Not ideal for:**- **Those who want a luxury or comfortable daily driver**
- **People who dislike frequent maintenance (oil changes, cooling system checks)**
- **Buyers who want a **plug-and-play** high-performance car without modifications**
- **Those in harsh climates who neglect rust prevention**
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### **Recommendation**
If you **find a well-maintained example** (with **full service records, no major rust, and a reliable turbo**), the **2022 2025 WRX is an excellent purchase** especially if you plan to **tune it**. However, **budget for maintenance and potential upgrades** to keep it running smoothly.
**Best approach:**1. **Get a pre-purchase inspection** (focus on **turbo, oil leaks, rust, and transmission**).
2. **Check for service records** (oil changes, timing belt, coolant flushes).
3. **Consider a manual transmission** if you want **better control and engagement**.
4. **Plan for modifications early** (sump cooler, upgraded intercooler, fueling) if you want **high power levels**.
**Final Verdict:****Buy if** you want a **tunable, reliable, and fun AWD performance car** and are willing to **maintain it properly**.
**Avoid if** you want a **luxury, low-maintenance, or ultra-reliable daily driver**.
Would you like recommendations on **specific modifications or maintenance tips** for this engine?
This part comes with a 90 day guarantee. 22-25 SUBARU WRX.