SUBARU 45115FN01A Air

( Manufacturer Part Number: 45115FN01A ), ( Part Type: Guide ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Universal Fitment: Direct Replacement ), ( Parts Included: Only Part Reference 17 On The Diagram Is Included )

Review SUBARU Genuine Air Guide

The **Subaru 45115FN01A Air** is a high-performance, precision-engineered air filter designed specifically for Subaru vehicles, offering an exceptional blend of efficiency, durability, and advanced filtration technology. Engineered to meet the demanding requirements of modern automotive engines, this filter is crafted from high-quality, pleated synthetic media that ensures superior particulate capture while maintaining optimal airflow. Its compact yet robust design fits seamlessly into the tight confines of Subaru s engine bays, particularly models equipped with turbocharged or high-performance applications, where airflow efficiency is critical. The filter s dense pleating maximizes surface area, trapping dust, pollen, and other contaminants with remarkable effectiveness up to 99.9% efficiency while minimizing pressure drop, thereby preserving engine power and fuel economy. Constructed from a blend of durable materials, including reinforced edges and a sturdy frame, the 45115FN01A Air is built to withstand the harsh conditions of daily driving, including exposure to moisture, heat, and vibration, ensuring long-term reliability. Its easy-to-install design, featuring a secure gasket and snap-in or clamp-on mounting system, allows for quick and hassle-free replacement, making it an ideal choice for both professional mechanics and DIY enthusiasts. Whether installed in a turbocharged WRX, a rugged Forester, or a sleek Legacy, this filter delivers clean, unrestricted airflow, contributing to smoother engine operation, extended component lifespan, and enhanced overall performance. Ideal for drivers who demand both performance and longevity, the Subaru 45115FN01A Air is a testament to Subaru s commitment to precision engineering and driver-centric innovation.

### **Pros and Cons of Buying a Subaru 45115FN01A (2018-2019 Forester with AWD, 2.5L Engine, Manual Transmission)**

#### **Pros**

1. **Reliability and Durability** Subaru s boxer engines are known for longevity, especially with proper maintenance. The 2.5L engine in this model is robust and has a strong reputation for lasting over 200,000 miles with basic care.

2. **All-Wheel Drive (AWD) Standard** The Forester comes standard with Symmetrical AWD, making it well-suited for snow, rain, and off-road conditions. This is particularly valuable in regions with harsh winters or uneven terrain.

- Adaptive Cruise Control

- Pre-Collision Braking

- Lane Keep Assist

- Blind Spot Detection

- Rear Cross-Traffic Alert

These features enhance safety and reduce the risk of accidents.

4. **Spacious and Practical Interior** The Forester offers a comfortable cabin with ample legroom, cargo space (up to 34.9 cu. ft.), and a practical third-row seat option (though limited). The manual transmission adds a sportier feel for those who enjoy driving.

- **Manual Transmission:** 22 MPG city, 28 MPG highway

- **Automatic (if upgraded):** 21 MPG city, 27 MPG highway

This is better than many competitors in the compact SUV segment.

6. **Resale Value** Subarus hold their value relatively well compared to some Japanese rivals, making this a solid long-term investment.

7. **Off-Road Capability** While not a true off-roader, the Forester s AWD, ground clearance ( 8.3 inches), and available traction control make it capable of light off-road adventures.

8. **Manual Transmission Option** If you prefer a more engaging driving experience, the manual transmission is a rare and appreciated feature in modern SUVs.

9. **Low-Cost Maintenance** Subaru parts and labor are generally affordable compared to luxury brands, and the boxer engine is simpler than V6 or turbocharged alternatives.

10. **Good Visibility** The Forester s design provides excellent forward and rear visibility, aiding in driving confidence.

---

#### **Cons**

1. **Higher Purchase Price for Manual** Manual transmissions are less common in SUVs, and this model may come at a premium compared to automatic-equipped versions.

2. **Manual Transmission Limitations** The manual gearbox is smooth but not as refined as some modern automatics. Shifting can feel slightly stiff, and downshifting for braking may require practice.

3. **Rear Seat Comfort** While spacious, the rear seats are firm and may not be as comfortable for long trips compared to competitors like the Honda CR-V or Mazda CX-5.

4. **Resale Depreciation** Like most SUVs, the Forester loses value over time, though Subarus depreciate slower than some rivals.

5. **Fuel Economy Trade-Off** The manual transmission improves highway MPG slightly, but the AWD system still consumes more fuel than FWD alternatives.

6. **Interior Quality** The materials feel slightly cheaper than luxury SUVs, with plastic trim that may show wear over time.

7. **Rust Susceptibility** Subarus are prone to rust, especially in snowy or salted regions. Regular undercarriage inspections are recommended.

8. **Limited Power** The 2.5L engine (170 hp) is adequate but not as strong as turbocharged rivals (e.g., Mazda CX-5 Turbo). Acceleration may feel sluggish compared to competitors.

9. **Tight Rear Cargo Space** While spacious, folding the rear seats reduces cargo room to 18.6 cu. ft., which is less than some rivals.

10. **Maintenance Costs Over Time** While initial costs are low, Subarus may require more frequent oil changes (every 5,000 miles) and potential head gasket issues if neglected.

---

### **Conclusion**

The **2018-2019 Subaru Forester (45115FN01A, manual AWD)** is a **strong choice for buyers who prioritize reliability, safety, and all-weather capability**. The manual transmission adds a fun, engaging factor for driving enthusiasts, while the AWD system ensures confidence in adverse conditions. However, it is not the most powerful or luxurious option in its class, and potential buyers should be prepared for slightly firmer seats and higher maintenance vigilance (especially regarding rust).

- Drivers who value **durability and low long-term costs**.

- Those needing **AWD for snow, rain, or light off-roading**.

- Enthusiasts who enjoy **manual transmissions**.

- Families or individuals who want **practicality without sacrificing safety**.

- Buyers who prefer **luxury interiors or turbocharged performance**.

- Those who prioritize **maximum cargo space or rear comfort**.

- People in **extremely rust-prone climates** without proactive maintenance.

---

### **Recommendation**

- You want a **reliable, safe, and capable AWD SUV** with a manual transmission.

- You plan to **drive it in varied conditions** (snow, rain, light trails).

- You are **comfortable with basic maintenance** (oil changes, rust checks).

- You find the **manual gearbox enjoyable** and don t mind its slight stiffness.

- You prefer **automatic transmission** (though manual is a unique selling point).

- You want **more power or luxury** (e.g., Mazda CX-5 Turbo, Honda CR-V).

- You live in a **very rust-prone area** and cannot commit to preventive care.

**Final Verdict:** This Forester is a **smart purchase for the right buyer** one who values **practicality, safety, and driving enjoyment** over flashy features. With proper care, it will serve as a dependable vehicle for many years.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. OEM Subaru Parts Center. Electrical parts are not returnable. Parts must be resalable and in the original packaging.

part #: 45115fn01a prices

• $12.67-$13.27

specifications ocoosys:

• for makes: Subaru
• mpn: 45115fn01a
• part type: Guide
• genuine oem: Yes
• manufacturer warranty: 1 Year
• universal fitment: Direct Replacement
• parts included: Only Part Reference 17 On The Diagram Is Included

payments ocoosys:

• other
• wallet: Paypal
• credit card: Visa

shipping ocoosys:

• service: Standard
• class: Standard
• transit: 3-8 Days
• type: Fixed
• cost: $7.95

seller ocoosys:

• # reviews: 56
• rating: 100.0%
• city: Natick, Massachusetts

general ocoosys:

• condition: New
• Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components

returns ocoosys:

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

offer ocoosys:

• started: March 25, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock
• quantity: 1

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