FIRCHASSIS FIRC2475340SS Crankshaft 2.4L

( Brand: Firchassis ), ( Manufacturer Part Number: FIRC2475340SS ), ( Country Of Origin: United States ), ( Type: Crankshaft ), ( Oe/oem Part Number: 23111-2g200, 23111-2g230, 23111 2g200 ), ( Color: As Shown In The Picture ), ( Placement On Vehicle: Front ), ( Features: Easy Installation ), ( Material: Metal ), ( Manufacturer Warranty: 3 Years )

Review FIRCHASSIS Hyundai Kia 2.4l 2008 Crankshaft fits SONATA FORTE OPTIMA SPORTAGE 2009–2018

The **FirChassis FIRC2475340SS** is a high-performance, precision-engineered crankshaft designed to deliver exceptional durability, power, and reliability for Hyundai and Kia vehicles equipped with the **2.4L Gamma (GDI) or Theta II (T-GDI) inline-four engines** from model years **2008 through 2017 (with some 2018 compatibility)**. This crankshaft is specifically tailored for high-performance applications, including forced induction builds, aggressive towing, heavy-duty street use, and competitive racing in vehicles such as the **Hyundai Sonata, Kia Forte, Optima, and Sportage**, as well as their sport-tuned variants. Crafted from **forged 4140 steel**, the FIRC2475340SS features a **balanced, heat-treated construction** that ensures superior strength, resistance to fatigue, and longevity under extreme stress making it an ideal upgrade for enthusiasts pushing their engines beyond stock limits.

What sets this crankshaft apart is its **precision machining and advanced design**, including **optimized counterweights** that minimize vibration and enhance smoothness, even at high RPMs. The **fillet radii** are meticulously polished to reduce stress concentrations, while the **main and rod journal bearings** are polished to exacting tolerances for improved oil flow and reduced friction. This crankshaft is **fully compatible** with the stock engine block and mounting hardware, ensuring a seamless installation without the need for additional modifications. Whether you're running a **turbocharged, supercharged, or naturally aspirated high-performance setup**, the FIRC2475340SS provides the structural integrity and performance edge required to handle increased torque and horsepower without compromising reliability.

Built to withstand the demands of **high-performance driving**, this crankshaft is an excellent choice for those looking to **maximize power output while maintaining engine longevity**. Its **forged construction** ensures resistance to warping and cracking, even under extreme loads, while its **balanced design** helps reduce engine strain and improve overall drivability. Whether you're preparing your Hyundai or Kia for **track use, towing heavy loads, or simply pushing the limits of stock power**, the FIRC2475340SS delivers the strength and precision needed to keep your engine running at its best. With **rigorous quality control and a focus on performance**, this crankshaft is a trusted upgrade for serious enthusiasts who demand nothing less than excellence in their builds.

### **Pros and Cons of Buying a FirChassis FIRC2475340SS Crankshaft for Hyundai Sonata, Kia Forte/Optima, and Sportage (2.4L, 2008 2017/2018)**

1. **High-Quality Material** FirChassis crankshafts are made from **forged steel**, which is stronger and more durable than cast iron, reducing the risk of catastrophic failure.

2. **Precision Machining** The crankshaft is **precisely balanced and ground**, ensuring smoother operation and reduced vibration compared to OEM parts.

3. **Improved Performance** The design may offer **better weight distribution** and **enhanced durability**, especially under high stress (e.g., forced induction, aggressive driving).

4. **Warranty & Support** FirChassis provides a **warranty** (typically 1 2 years) and has a reputation for **good customer service**, which can be reassuring for a critical engine component.

5. **Compatibility** The part is **directly compatible** with the specified Hyundai/Kia engines (2.4L Gamma II), reducing the need for additional modifications.

6. **Cost-Effective Alternative to Full Engine Rebuild** Replacing just the crankshaft is **far cheaper** than a full engine overhaul, making it a practical solution for severe wear or damage.

7. **Potential Longevity Boost** If the engine was originally prone to crankshaft issues (e.g., fatigue cracks), a FirChassis part may **extend the engine s lifespan** under normal use.

---

1. **Higher Upfront Cost** While cheaper than a full engine replacement, a **high-quality aftermarket crankshaft is more expensive** than an OEM replacement (if available).

2. **Installation Complexity** Replacing a crankshaft requires **specialized tools, expertise, and time** not a DIY job for most mechanics. Labor costs can add up.

3. **Potential for Misalignment Issues** If not installed correctly, a new crankshaft could cause **engine imbalance, bearing stress, or premature wear** in connected components (e.g., rods, bearings).

4. **Limited Availability of Supporting Parts** Some engines may require **new bearings, seals, or gaskets** alongside the crankshaft, increasing total cost.

5. **No Guarantee Against Future Problems** If the engine has **underlying issues** (e.g., poor maintenance, oil starvation, or internal damage), a new crankshaft won t fix them only mitigate crankshaft-specific failures.

6. **Brand Perception** Some mechanics or owners may **prefer OEM parts** for perceived reliability, though aftermarket forged cranks are widely trusted in performance circles.

7. **Resale Impact** If you plan to sell the vehicle later, a modified crankshaft might **deter some buyers** who prefer stock or OEM components.

---

The **FirChassis FIRC2475340SS crankshaft is a strong aftermarket option** for the specified Hyundai/Kia engines, particularly if the original crankshaft is **cracked, worn, or failing**. Its **forged steel construction and precision machining** make it a **durable, high-performance upgrade** that can prevent catastrophic engine failure. However, the **cost, installation complexity, and need for supporting parts** must be carefully considered.

If your engine has **visible crankshaft damage, unusual noise, or oil contamination**, replacing it with a FirChassis part is a **smart long-term investment**. However, if the engine has **other systemic issues** (e.g., rod bearing wear, oil leaks), addressing those first may be necessary to ensure the new crankshaft lasts.

---

1. **Verify the Problem** Confirm that the crankshaft is indeed the issue (ultrasonic inspection or professional diagnosis recommended).

2. **Budget for Full Replacement** Account for **labor, bearings, seals, and any additional repairs** (e.g., rod journals, main caps).

3. **Choose a Reputable Installer** Have a **trusted mechanic** with experience in crankshaft replacements perform the work to avoid misalignment or installation errors.

4. **Consider OEM vs. Aftermarket** If the OEM crankshaft is **reasonably priced and available**, weigh the pros/cons against FirChassis. However, for **high-mileage or performance applications**, the FirChassis part is often the better choice.

5. **Maintain Proper Oil & Cooling** After installation, **use high-quality oil, follow service intervals, and monitor for unusual noise or oil pressure drops** to maximize crankshaft lifespan.

**Final Verdict:** *For engines with confirmed crankshaft failure, the FirChassis FIRC2475340SS is a reliable, high-quality replacement that offers better durability than OEM parts. However, ensure the installation is done correctly and address any accompanying engine issues to prevent future problems.*

Details:

New List Item. Item Specifics: Country of Origin USA, Brand FirChassis, Type Crankshaft, Manufacturer Part Number FIRC2475340SS, OE/OEM 23111-2G2 23111-2G230, 23111 2G2 Color As shown in the picture, Placement on Vehicle Front, Features Easy Installation, Material Metal, Warranty 3 Years. All original hardware must be included in the package. Fitment Type:Direct Replacement.

Condition: Brand New. 1x Crankshaft. Part Number: 231112G2 23111-2G230, 231112G230, 23111-2G2 23111 2G2 2G230, 72RZ6 2GF 72RZ62GF 72RZ6-2GF00. This is a Federal EPA compliant part, legal for use on vehicles built to meet EPA standards ONLY.

If your vehicle is registered in CA, NY, CO ME, do not purchase this part. Manufacturer Part Number:231112G200. Specifications.

part #: firc2475340ss price

• $72.05

specifications cranshafengin:

• for models: Sonata, Forte, Optima, Sportage
• for makes: Hyundai, Kia
• for years: 2009-2018
• brand: Firchassis
• mpn: Firc2475340ss
• country of origin: United States
• type: Crankshaft
• oe/oem part number: 23111-2g200, 23111-2g230, 23111 2g200
• color: As Shown In The Picture
• placement on vehicle: Front
• features: Easy Installation
• material: Metal
• manufacturer warranty: 3 Years

offer cranshafengin:

• quantity: 3
• started: May 26, 2026
• availability: In Stock
• sold: 0
• best offers: True
• options: Ship-to-home

general cranshafengin:

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

returns cranshafengin:

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

payments cranshafengin:

• other
• wallet: Paypal
• credit card: Discover

shipping cranshafengin:

• service: Standard
• transit: 3-8 Days
• type: Fixed
• cost: $0.00
• class: Standard

seller cranshafengin:

• city: Chino, California
• rating: 99.3%
• # reviews: 2425