SUBARU 12201-KA170 Crankshaft Vivio Pleo

( Manufacturer Part Number: 12201-KA170 ), ( Part Type: Crankshaft ), ( Oe/oem Part Number: 12201-ka170 X1 ), ( Country Of Origin: Japan )

Review SUBARU Crankshaft Complete Vivio Pleo Ra Oem Japan

The **Subaru 12201-KA170 Crankshaft** is a precision-engineered component designed exclusively for the **Subaru Vivio (Pleo/Ra)** engine family, specifically tailored to the **FA20/FA24 1.5L and 1.6L naturally aspirated four-cylinder powertrains**. Crafted from high-grade **forged steel**, this crankshaft embodies durability and reliability, ensuring optimal performance under the demanding conditions of daily driving, towing, or spirited acceleration. The **seven main journal bearings** are meticulously machined to a tight tolerance, providing smooth operation and minimizing friction, while the **five counterweights** are strategically balanced to reduce vibration and enhance engine longevity. The **integrated oil passages** within the crankshaft facilitate efficient lubrication, protecting critical components from wear and ensuring consistent power delivery across the engine s RPM range. Whether installed in a stock or modified engine, this crankshaft delivers the structural integrity and rotational precision required to maintain peak efficiency, torque output, and overall drivability. Ideal for both original equipment replacement (OEM) and performance applications, it adheres to Subaru s stringent engineering standards, making it a trusted choice for mechanics and enthusiasts seeking to restore or upgrade their Vivio s powertrain.

Buying a **Subaru 12201-KA170 crankshaft** for a **Vivio Pleo RA** (or similar 1.5L EA111 engine) involves several considerations. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of Buying a Replacement Crankshaft**

1. **Restores Engine Performance**

A worn or damaged crankshaft can cause excessive oil consumption, knocking, or even catastrophic failure. Replacing it restores the engine s power output, smooth operation, and longevity. The EA111 engine is known for its reliability, but crankshaft issues (especially from wear or improper maintenance) can severely degrade performance.

2. **Prevents Further Damage**

A failing crankshaft can lead to rod bearing failure, piston damage, or even a blown engine. Replacing it early avoids costly repairs to other components like connecting rods, pistons, or the cylinder block.

3. **OEM or High-Quality Aftermarket Options**

Subaru s **12201-KA170** is an OEM part, meaning it meets the manufacturer s exact specifications. High-quality aftermarket alternatives (from brands like **Fel-Pro, Mahle, or Koyo**) are often just as reliable and may offer warranties. These parts are forged for durability and precision-machined to fit seamlessly.

4. **Compatibility with Modifications**

If you plan to modify your engine (e.g., forced induction, high RPM tuning), a fresh crankshaft ensures it can handle increased stress without premature failure. The EA111 is a robust engine, but aggressive modifications can accelerate wear.

5. **Warranty Coverage**

Many aftermarket crankshafts come with warranties (e.g., 1 5 years), providing peace of mind. OEM parts may also be covered under Subaru s extended warranties if purchased through an authorized dealer.

6. **Potential for Engine Rebuilding**

If the crankshaft is part of a full rebuild kit (including bearings, seals, and gaskets), it simplifies the process and ensures all critical components are replaced at once, improving long-term reliability.

7. **Resale Value Preservation**

A rebuilt engine with a new crankshaft can significantly increase the resale value of your Vivio Pleo RA, especially if it s a high-mileage or modified vehicle.

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### **Cons of Buying a Replacement Crankshaft**

1. **High Cost**

A **Subaru 12201-KA170 crankshaft** can range from **$300 $800 **, depending on whether it s OEM or aftermarket. Labor costs for installation (especially if requiring a full engine rebuild) can add **$1,500 $3,000 **, making it a significant investment.

2. **Complex Installation**

- Disassembly of the entire engine.

- Precision machining (if the crank needs to be fitted to existing bearings).

- Balancing and alignment checks.

- Replacement of related components (rod bearings, seals, timing components).

If done incorrectly, it can lead to **engine damage or failure**. This is not a DIY job for most enthusiasts.

3. **Potential for Counterfeit Parts**

Some aftermarket crankshafts may be **low-quality or counterfeit**, leading to premature failure. Always purchase from **reputable suppliers** (e.g., **RockAuto, JEGS, or specialized engine rebuilders**) and verify the part s authenticity.

4. **Engine Rebuild Necessity**

If the crankshaft is being replaced due to **severe wear or damage**, other components (like rods, bearings, or the block) may also need replacement. This can turn a **$500 crankshaft job** into a **$3,000 rebuild**.

5. **Time and Downtime**

A crankshaft replacement requires **multiple days of labor**, during which the vehicle is non-operational. This can be inconvenient for daily drivers.

6. **Risk of Misdiagnosis**

Symptoms like **knocking, oil consumption, or low compression** can sometimes be caused by **other issues** (e.g., worn pistons, timing chain problems, or fuel system issues). Replacing the crankshaft without confirming the root cause may be unnecessary.

7. **Limited Availability of Specialized Labor**

Not all mechanics have experience with **EA111 engines** or crankshaft replacements. Finding a **trusted engine rebuild specialist** may require extra effort.

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### **Conclusion**

- The crankshaft is **physically damaged** (bent, cracked, or worn beyond tolerance).

- The engine is **showing severe symptoms** (excessive knocking, oil leaks, or compression loss).

- You plan to **modify the engine** and want to ensure long-term reliability.

- Other components (like rods or bearings) are already failing or need replacement.

- The symptoms are caused by **other issues** (e.g., timing chain stretch, valve train problems).

- The engine is **high-mileage but running fine** a crankshaft replacement may be overkill.

- You lack access to **skilled labor** or cannot afford the full rebuild cost.

---

### **Recommendation**

1. **Diagnose the Problem First**

- **Compression test** (low compression may indicate piston or valve problems).

- **Oil analysis** (metal particles can confirm bearing or crank wear).

- **Ultrasonic inspection** (for internal engine damage).

Consult a **trusted mechanic or engine specialist** to avoid unnecessary repairs.

2. **Choose the Right Part**

- **OEM (12201-KA170)** is the safest choice but may be expensive.

- **High-quality aftermarket** (e.g., **Fel-Pro, Mahle, or Koyo**) offers good value with warranties.

- Avoid **no-name brands** unless from a reputable supplier.

3. **Get a Full Engine Rebuild**

If replacing the crankshaft, **do a complete rebuild** (including bearings, seals, and gaskets) to maximize reliability. This ensures all weak points are addressed.

4. **Find the Right Shop**

Look for a **mechanic with EA111 experience** or an **engine rebuild specialist**. Ask for **before-and-after diagnostics** to confirm the crankshaft was the issue.

5. **Consider Alternatives**

- If the engine is **high-mileage and not modified**, a **crankshaft replacement may not be worth it** unless symptoms are severe.

- If the issue is **timing chain stretch or oil consumption**, addressing those first may be more cost-effective.

6. **Budget for the Full Cost**

Account for **part costs ($300 $800) labor ($1,500 $3,000 )**. If the total exceeds **$2,000 $3,000**, weigh whether the engine is worth saving.

---

### **Final Verdict**

If your **Vivio Pleo RA s EA111 engine has a confirmed crankshaft failure** and you re committed to restoring it, **replacing the crankshaft is the right choice** just ensure it s part of a **full rebuild** and done by a **qualified professional**. If the engine is **old or not worth the investment**, consider **replacing the entire engine** or **selling the vehicle**.

For most cases, **prioritize diagnosis** a crankshaft replacement is a **big job** and should only be done when absolutely necessary.

Details:

Video Games / Consoles: 9504. HS Code examples: Car Parts: 8708.

part #: 12201ka170 price

• $639.00

specifications cranshafengin:

• for makes: Subaru
• mpn: 12201-ka170
• part type: Crankshaft
• oe/oem part number: 12201-ka170 X1
• country of origin: Japan

offer cranshafengin:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• started: March 24, 2026

returns cranshafengin:

• paid by: Seller
• time: 60 Days
• policy: Returns Accepted

general cranshafengin:

• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
• condition: New

seller cranshafengin:

• rating: 99.3%
• # reviews: 804
• city: Aichi

payments cranshafengin:

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

shipping cranshafengin:

• service: SpeedPAK Expedited
• transit: 9-15 Days
• type: Fixed
• class: Expedited From Outside
• cost: $202.50

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