MAZDA GC0217670 Shaft Crank

( Manufacturer Part Number: GC0217670 ), ( Part Type: Shaft Crank )

Review MAZDA Shaft Crank New Oem

The **Mazda GC0217670 Shaft Crank** is a precision-engineered component designed specifically for Mazda vehicles, serving as a critical element in the powertrain system. This high-performance crankshaft is meticulously crafted to meet the rigorous demands of modern automotive engines, ensuring optimal power delivery, durability, and reliability. Constructed from premium-grade forged steel, the GC0217670 crankshaft undergoes a multi-step manufacturing process, including heat treatment, machining, and dynamic balancing, to achieve exceptional strength and smooth operation. Its robust design incorporates strategically placed counterweights to minimize vibration and maintain rotational stability, even under high-stress conditions. This crankshaft is engineered to fit seamlessly into Mazda s internal combustion engines, providing the structural integrity necessary to withstand the forces generated during combustion cycles. Whether used in high-performance applications or as a replacement for worn or damaged components, the GC0217670 crankshaft delivers enhanced performance, extended engine life, and peace of mind for mechanics and enthusiasts alike. Its compatibility with Mazda s engine architectures ensures a perfect fit, allowing for easy installation and seamless integration into existing drivetrain systems.

### Pros and Cons of Buying a Mazda GC0217670 Shaft Crank

The **Mazda GC0217670** is a replacement crankshaft for certain Mazda models, particularly those with the **MZ-CD (1.5L or 2.0L)** or **MZ-CD (2.0L)** engines. Below is a detailed breakdown of its advantages and disadvantages.

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### **Pros**

1. **OEM Quality and Fitment**

The GC0217670 is an **original equipment manufacturer (OEM) replacement part**, meaning it is designed to match the specifications of Mazda s original crankshaft. This ensures proper fitment, alignment, and performance without compromising engine integrity.

2. **Durability and Performance**

Mazda crankshafts are known for their **high-quality forged steel construction**, which provides strength, resistance to wear, and longevity. A genuine or high-quality aftermarket replacement should maintain these characteristics, reducing the risk of catastrophic failure.

3. **Warranty Coverage**

If purchased from an **authorized Mazda parts dealer or a reputable aftermarket supplier**, the crankshaft may come with a warranty (typically 12 24 months). This offers peace of mind in case of manufacturing defects or premature failure.

4. **Compatibility with Common Engine Issues**

The **MZ-CD engine** (found in models like the Mazda3, Mazda6, and MX-5 Miata) is prone to **crankshaft wear, rod bearing failure, or oil leaks** due to its design and common maintenance neglect. Replacing a worn crankshaft can restore power, reduce noise, and prevent further damage.

5. **Easier Maintenance Than Engine Overhaul**

Replacing just the crankshaft (rather than a full engine rebuild) is **less expensive and time-consuming** than a complete overhaul. It can be a cost-effective solution for restoring an older or high-mileage engine.

6. **Improved Reliability for High-Performance Mods**

If you plan to **modify your engine** (e.g., forced induction, turbocharging, or increased horsepower), a fresh crankshaft can help prevent premature failure under higher stress.

7. **Accessibility of Parts**

Mazda crankshafts are **widely available** through dealerships, online retailers (e.g., RockAuto, JEGS, Summit Racing), and specialty performance shops. This makes sourcing the part relatively straightforward.

8. **Potential for Increased Engine Life**

If the original crankshaft was worn or damaged, replacing it can **extend the lifespan of the engine** by preventing rod bearing collapse or crankshaft failure, which can lead to catastrophic engine damage.

---

### **Cons**

1. **High Cost Relative to Aftermarket Alternatives**

A **genuine Mazda crankshaft** (or a high-quality aftermarket equivalent) can be **expensive**, often ranging from **$300 $800 **, depending on the source and engine variant. This cost may be prohibitive for budget-conscious buyers.

2. **Labor-Intensive Installation**

Replacing a crankshaft requires **disassembling the engine**, removing the cylinder head, pistons, and connecting rods, and often **replacing rod bearings** as well. This is a **complex job best left to a professional mechanic**, adding significant labor costs (typically **$800 $2,000 ** depending on the shop).

3. **Risk of Counterfeit or Low-Quality Parts**

If purchasing from an **unverified seller**, there is a risk of receiving a **counterfeit or substandard crankshaft**. This could lead to **premature failure, poor performance, or even engine damage**. Always buy from **reputable sources** with return policies.

4. **Potential Need for Additional Repairs**

- Replace **rod bearings** (often required when removing the crank).

- Address **oil leaks** (e.g., crank seals, oil pump issues).

- Check for **internal engine damage** (e.g., bent rods, worn journals).

This can **increase total repair costs**.

5. **Limited Longevity Without Proper Maintenance**

Even a new crankshaft will **wear out over time** if the engine is not properly maintained. Failure to change **oil regularly, use high-quality lubricants, or address minor issues** (e.g., oil leaks) can reduce its lifespan.

6. **Time and Downtime for the Vehicle**

A crankshaft replacement is a **major engine job** that can take **multiple days** to complete, depending on the mechanic s workload. This means your vehicle will be **out of commission for an extended period**.

7. **Not Always the Best Long-Term Solution**

If the engine has **severe internal wear** (e.g., bent rods, damaged bearings, or a failing block), replacing just the crankshaft may **not be enough**. In such cases, a **full engine rebuild or replacement** might be more cost-effective in the long run.

8. **Potential for Misalignment or Installation Errors**

If the installation is not done correctly, the crankshaft may **not be properly balanced or aligned**, leading to **vibration, noise, or premature wear**. This risk underscores the importance of **professional installation**.

---

### **Conclusion**

The **Mazda GC0217670 crankshaft** is a **high-quality, reliable replacement** for engines prone to crankshaft failure, particularly the **MZ-CD series**. It offers **superior durability, OEM fitment, and peace of mind** compared to cheaper aftermarket alternatives. However, the **high cost, labor-intensive installation, and potential for additional repairs** make it a **significant investment**.

If your engine is **showing signs of crankshaft wear** (e.g., **rod knock, blue smoke, excessive oil consumption, or a failing oil pump**), replacing the crankshaft can **restore performance and prevent catastrophic failure**. However, if the engine has **severe internal damage**, a **full rebuild may be more practical**.

For **high-mileage or modified engines**, this replacement is often **worth the cost** to ensure long-term reliability. For **casual drivers with well-maintained engines**, the risk may not justify the expense unless symptoms of crankshaft failure are present.

---

### **Recommendation**

- **Proceed with the replacement** if you have the budget and the engine is otherwise in decent condition.

- **Get a professional inspection** to ensure no other major repairs (e.g., rod bearings, seals) are needed.

- **Choose a reputable supplier** (e.g., Mazda dealership, RockAuto, Summit Racing) to avoid counterfeit parts.

- **Consider replacing the crankshaft as a precaution**, especially if the engine has **high mileage (150,000 miles)**.

- **Budget for labor costs** this is not a DIY job unless you have **advanced mechanical experience**.

- **Avoid replacing just the crankshaft** a **full engine rebuild or replacement** may be more cost-effective.

- **Get a second opinion** from a trusted mechanic before committing to a partial repair.

- **Explore aftermarket alternatives** (e.g., **Crankshaft.com, JE, or other high-quality brands**) that may offer **similar performance at a lower cost**.

- **Check for used/rebuilt crankshafts** (if available) to reduce expenses, though **warranty coverage will be limited**.

The **Mazda GC0217670 crankshaft is a strong choice for restoring or maintaining an MZ-CD engine**, particularly if you prioritize **reliability and longevity**. However, **weigh the cost against the engine s condition** if other major repairs are needed, a **full rebuild may be the smarter long-term solution**. Always **consult a mechanic** before proceeding to ensure the repair aligns with your vehicle s overall health.

Details:

Buyer should verify this is the exact part needed before purchasing.

part #: gc0217670 prices

• $13.61-$57.37

specifications cranshafengin:

• for makes: Mazda
• mpn: Gc0217670
• part type: Shaft Crank

offer cranshafengin:

• availability: In Stock
• sold: 0
• quantity: 1
• options: Ship-to-home
• best offers: True
• started: April 24, 2026

general cranshafengin:

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

shipping cranshafengin:

• class: Standard
• cost: $0.00
• transit: 3-5 Days
• service: Standard
• type: Fixed

returns cranshafengin:

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

payments cranshafengin:

• other
• wallet: Google-pay
• credit card: Diners-club

seller cranshafengin:

• # reviews: 15753
• rating: 99.8%
• city: Columbus, Wisconsin

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