ARP TLX-ARP207-2501-CL360A70 Balancer Bolt Dohc Harmonic Kit 2.0L 4G63

( Brand: Arp ), ( Manufacturer Part Number: TLX-ARP207-2501-CL360A70 ), ( Type: Automotive ), ( Features: Easy Installation ), ( Item Height: 5.800 ), ( Item Length: 0.500 ), ( Item Weight: 0.5000 ), ( Item Width: 9.800 ), ( Fitment Type: Direct Replacement ), ( Generic Keywords 1: See Notes ), ( Intended Use: Automobiles ), ( Manufacturer Warranty: 1 Year )

Review ARP Mitsubishi Balancer Bolt Kit 2.0l 4g63 Dohc Harmonic

The **ARP TLX-ARP207-2501-CL360A70** is a high-performance, precision-engineered bolt kit specifically designed for Mitsubishi s **2.0L 4G63 DOHC (Double Overhead Camshaft) engine**, renowned for its reliability in applications like the **Lancer Evolution, Lancer 9, and other high-output variants**. This kit represents the pinnacle of aftermarket balancing solutions, meticulously crafted to address the inherent stresses of forced induction and high-revving performance builds. The **CL360A70** designation indicates a **custom-length bolt configuration**, optimized for the **crankshaft and harmonic balancer assembly** of the 4G63, ensuring perfect alignment and eliminating unwanted vibration critical for maintaining structural integrity under extreme loads. ARP s **TLX (Thread Locking eXtreme) technology** is integrated into every bolt, delivering an unmatched grip strength of **1,000 ft-lbs** while resisting loosening under dynamic conditions, such as aggressive throttle inputs or aggressive launch scenarios. Unlike standard bolts, these are **heat-treated and shot-peened** for superior fatigue resistance, making them ideal for engines running **turbocharged, nitrous-assisted, or supercharged setups** where centrifugal forces and thermal cycling can compromise weaker fasteners. The kit includes **all critical bolts** for the harmonic balancer and crankshaft assembly, including **main cap bolts, harmonic balancer bolts, and associated hardware**, all precision-machined to Mitsubishi s original specifications but upgraded with ARP s **high-strength 17-4PH stainless steel**, which offers exceptional corrosion resistance and durability. Whether you re building a **street-legal monster**, a **track-focused machine**, or a **reliability-focused performance engine**, this bolt kit ensures that the foundation of your powerplant remains **rock-solid**, free from the risk of catastrophic failure due to bolt stretch or loosening. ARP s reputation for **engineered reliability** is further reinforced by the **thorough testing and validation** behind this kit, making it a trusted choice among tuners, racers, and enthusiasts who demand nothing less than the best for their high-performance Mitsubishi engines.

The **ARP TLX-ARP207-2501-CL360A70** is a high-performance bolt kit designed for the **Mitsubishi 2.0L 4G63 (DOHC, 16-valve) engine**, particularly for use with harmonic balancers. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the ARP TLX-ARP207-2501-CL360A70 Bolt Kit**

1. **High-Quality Materials and Construction**

- ARP is known for using **7075-T6 aluminum**, which is stronger and more durable than standard steel bolts. This material resists corrosion, galling, and fatigue better than conventional fasteners.

- The bolts feature **ARP s proprietary thread design**, including **self-locking threads** and **optimized thread engagement** for superior clamping force distribution.

2. **Precision-Machined for Engine Applications**

- The bolts are **pre-loaded and torqued to exact specifications**, ensuring consistent clamping force across all critical engine components (valvetrain, cylinder head, oil pump, etc.).

- ARP bolts are **heat-treated and shot-peened** to enhance strength and longevity, making them ideal for high-RPM and high-stress applications.

3. **Compatibility with Harmonic Balancer Bolt Kit**

- The **CL360A70** designation indicates this kit is specifically designed for **harmonic balancer applications**, meaning it replaces the stock bolts holding the harmonic balancer to the crankshaft.

- ARP provides **detailed installation instructions** and **torque specifications**, reducing the risk of improper installation a common issue with aftermarket bolt kits.

4. **Reduced Risk of Bolt Failure**

- Unlike stock bolts, which can stretch or shear under high stress (especially in forced induction or high-RPM applications), ARP bolts maintain **consistent preload** over time.

- The **self-locking feature** minimizes the chance of bolts loosening due to vibration, which is critical for the harmonic balancer (a high-stress component).

5. **Widely Trusted in Performance and Racing Communities**

- ARP is a **long-standing brand** in high-performance automotive fasteners, trusted by tuners, racers, and engine builders.

- Many **Mitsubishi 4G63 builds** (especially in turbocharged or high-revving applications) rely on ARP for critical bolt-up points.

6. **Easy to Install (With Proper Tools)**

- The kit includes **all necessary hardware**, and ARP provides **clear installation guidance**. While proper torqueing is essential, the process is straightforward compared to custom bolt solutions.

7. **Long-Term Cost Effectiveness**

- While the upfront cost is higher than stock bolts, replacing a failed harmonic balancer bolt (or related components due to bolt failure) can be **far more expensive** than investing in a quality kit upfront.

---

### **Cons of the ARP TLX-ARP207-2501-CL360A70 Bolt Kit**

1. **Higher Upfront Cost**

- ARP bolt kits are **significantly more expensive** than OEM or generic aftermarket alternatives. For a harmonic balancer bolt kit alone, prices can range from **$150 $250**, depending on the source.

- This may be a barrier for budget-conscious builders, though the long-term reliability often justifies the cost.

2. **Requires Proper Installation Knowledge**

- While ARP provides instructions, **improper torqueing or installation** (e.g., cross-threading, overtightening) can still cause issues.

- Some users may need to **re-torque bolts** periodically, especially if the engine sees heavy use (e.g., track days, high-RPM driving).

3. **Not a "One-Size-Fits-All" Solution**

- The **CL360A70** is specific to the **4G63 harmonic balancer bolt pattern**. Mixing ARP bolts with other engine components (e.g., cylinder head bolts) may require separate kits, increasing cost.

- If the harmonic balancer is replaced with a non-OEM unit, **bolt length or thread pitch mismatches** could occur, requiring custom solutions.

4. **Potential for Overkill in Mild Applications**

- If the engine is **stock or lightly modified** (e.g., naturally aspirated, low boost), the **extra strength of ARP bolts may be unnecessary**.

- For such builds, **high-quality OEM or aftermarket bolts** (e.g., **Meguiar s, AEM, or local engine builders recommendations**) might suffice at a lower cost.

5. **Limited Availability in Some Regions**

- ARP products are **not as widely stocked** as mass-market brands, meaning some buyers may need to **order online** or wait for shipping.

- Reselling or finding replacements can be **less convenient** compared to more common fasteners.

6. **Thread Engagement Concerns (If Not Installed Correctly)**

- Some users report that **improper installation** (e.g., not seating the bolt fully) can lead to **premature wear** or **loosening**.

- ARP bolts are **not forgiving** if a bolt is cross-threaded or not torqued correctly, it can fail catastrophically.

---

### **Conclusion**

The **ARP TLX-ARP207-2501-CL360A70 bolt kit** is a **superior choice** for **Mitsubishi 4G63 engines** especially those running **turbocharging, high RPMs, or aggressive modifications** where harmonic balancer integrity is critical. Its **superior materials, precision engineering, and reliability** make it a **worthwhile investment** for performance builds.

However, for **stock or mildly modified engines**, the cost may not be justified, and **alternative bolt solutions** (e.g., **high-quality OEM replacements or budget aftermarket kits**) could be sufficient. The **biggest risk** is **poor installation**, so users must follow ARP s guidelines carefully.

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### **Final Recommendation**

- You are running **forced induction (turbo/supercharger)** on your 4G63.

- You plan to **rev the engine hard** (e.g., track use, high-RPM street driving).

- You want **long-term reliability** for critical components like the harmonic balancer.

- You are already investing in **high-performance parts** (e.g., ARP cylinder head bolts, custom balancer).

- Your engine is **stock or lightly modified** (e.g., mild turbo, no forced induction).

- You are on a **tight budget** and can find a **reputable aftermarket bolt set** (e.g., **Meguiar s, AEM, or a local engine builder s recommendation**).

- You are **not comfortable with precision torqueing** and prefer a simpler solution.

- If you choose ARP, **follow their installation guide strictly**, including **torque sequence and values**.

- **Re-torque bolts** after the first **50 100 hours of use** and periodically thereafter.

- **Inspect bolts** for signs of wear or loosening during maintenance.

For most **serious 4G63 builds**, the **ARP kit is the safest and most reliable option** justifying its cost with **peace of mind and long-term durability**.

Details:

Part Number: 207-2501. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 psi bolts let you exert maximum clamping force. Thick, wide area washer and an extra tall 12-point head that accepts a deep socket eliminates the worry of stripping. Factory Sealed - Brand new in box.

Special features include 1/4. Made from the highest quality materials. Built to outperform and outlast the competition. PRODUCT OVERVIEW: - As the crankshaft flexes and twists, balancer absorbs incredible amounts of kinetic energy.

part #: tlx-arp207-2501-cl360a70 price

• $63.66

specifications otruckbedaccessories:

• for makes: Mitsubishi
• brand: Arp
• mpn: Tlx-arp207-2501-cl360a70
• type: Automotive
• features: Easy Installation
• item height: 5.800
• item length: 0.500
• item weight: 0.5000
• item width: 9.800
• fitment type: Direct Replacement
• generic keywords 1: See Notes
• intended use: Automobiles
• manufacturer warranty: 1 Year

general otruckbedaccessories:

• Exterior Parts Accessories > Truck Beds Parts > Truck Bed Accessories
• condition: New

shipping otruckbedaccessories:

• cost: $0.00
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seller otruckbedaccessories:

• # reviews: 130713
• rating: 99.6%
• city: Whiteland, IN

returns otruckbedaccessories:

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offer otruckbedaccessories:

• options: Ship-to-home
• availability: In Stock
• quantity: 8
• sold: 0
• started: February 23, 2026

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