ARP TLX-ARP100-1403-CL360A70 Header Stud Kit 3/8 1.670IN 12PT

( Brand: Arp ), ( Manufacturer Part Number: TLX-ARP100-1403-CL360A70 ), ( Part Type: Header ), ( Item Weight: 1.0500 ), ( Fitment Type: Direct Replacement ), ( Generic Keywords 1: See Notes ), ( Intended Use: Automobiles ), ( Manufacturer Warranty: 1 Year )

Review ARP Header Stud Kit Chevy 3/8 1.670in 12pt

The **ARP TLX-ARP100-1403-CL360A70 Header Stud Kit** is a precision-engineered, high-performance upgrade designed exclusively for Chevy applications seeking enhanced structural integrity, improved handling, and a bold aesthetic statement. This kit is meticulously crafted to replace the stock header studs on your vehicle s suspension components, offering a robust solution for those looking to reinforce their setup while maintaining compatibility with a wide range of aftermarket parts. The **3/8-inch diameter, 12-point studs** feature a **1.670-inch length**, striking a balance between strength and clearance, ensuring they fit seamlessly within the confines of most Chevy suspension geometries without compromising functionality. Engineered from **high-grade, cold-forged steel**, these studs are heat-treated to achieve an optimal hardness, delivering superior resistance to fatigue, bending, and wear critical attributes for drivers pushing their vehicles to the limits on track or in aggressive street applications. The **CL360A70 designation** indicates a specific thread pattern and thread pitch, ensuring a perfect match with ARP s high-performance bushings, control arms, and other suspension components, reducing the risk of stripping or loosening under heavy loads. Beyond its mechanical advantages, this kit also elevates the visual appeal of your suspension, with a clean, polished finish that complements both stock and heavily modified builds. Whether you re upgrading for durability, performance, or style, the ARP TLX-ARP100-1403-CL360A70 Header Stud Kit delivers a reliable, high-quality solution that sets a new standard for Chevy suspension reinforcement.

### **Pros and Cons of buying a ARP TLX-ARP100-1403-CL360A70 Header Stud Kit for Chevy (3/8" 1.670" 12pt)**

#### **Pros**

1. **High-Quality Materials** ARP is known for manufacturing premium aftermarket parts, including forged header studs that are stronger and more durable than OEM components. These studs are designed to withstand extreme stress, making them ideal for high-performance applications.

2. **Enhanced Strength and Durability** The **3/8" x 1.670" 12-point thread** specification ensures a robust connection between the header and engine block. Forged construction reduces the risk of stud failure under high loads, which is critical for forced induction builds, heavy-duty towing, or high-RPM applications.

3. **Compatibility with Chevy Engines** This kit is specifically designed for Chevy engines, ensuring proper fitment with common block patterns. The **CL360A70** designation suggests it is optimized for certain Chevy V8 applications (likely GM s LS or LT series), reducing the need for custom machining.

4. **Improved Head Gasket Sealing** Header studs help distribute clamping force evenly across the head gasket, reducing the risk of leaks especially important in high-performance or turbocharged setups where gasket integrity is compromised by higher cylinder pressures.

5. **Ease of Installation** While header studs require some effort to install (torquing to specification is critical), ARP provides clear instructions and tools (like their **ARP Stud Wrench**) to simplify the process. Pre-lubricated studs can also make threading into the block smoother.

6. **Long-Term Reliability** Forged steel studs resist deformation under cyclic loading (common in high-performance engines), whereas softer OEM studs may stretch or fail over time. This makes ARP studs a wise investment for engines that see heavy use.

7. **Warranty and Support** ARP offers warranties on their products, providing peace of mind in case of defects. Their customer support is also well-regarded for troubleshooting and technical assistance.

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#### **Cons**

1. **Cost** ARP parts are premium-priced, and this stud kit is no exception. Depending on market fluctuations, it may cost significantly more than OEM or generic aftermarket alternatives. For budget-conscious builders, this could be a deterrent.

2. **Installation Complexity** Replacing header studs requires removing the cylinder head(s), cleaning threads, and carefully installing the new studs with proper torque (typically **100-120 ft-lbs** for Chevy applications). Improper installation can lead to stripped threads or head gasket failure. This may require professional help if the builder lacks experience.

3. **Potential for Overkill** If the engine is not heavily modified (e.g., stock or mildly tuned), the benefits of ARP studs may not be immediately noticeable. For such applications, OEM or lower-cost aftermarket studs might suffice.

4. **Thread Cleaning Required** Before installing ARP studs, the existing threads in the block and header must be cleaned thoroughly to prevent cross-threading or damage. This adds time and effort to the installation process.

5. **Limited Use Case Flexibility** While this kit is Chevy-specific, it may not fit every Chevy engine variant (e.g., some older small-block or big-block patterns). Always verify compatibility with your exact engine block before purchasing.

6. **Torque Specifications Must Be Followed** Under-torquing can lead to loose connections, while over-torquing risks warping the head or damaging the block. ARP provides torque specs, but adherence is critical mistakes here can void warranties or cause failure.

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### **Conclusion**

The **ARP TLX-ARP100-1403-CL360A70 header stud kit** is a superior choice for Chevy engine builders prioritizing **durability, performance, and reliability**, particularly in high-stress applications like turbocharged, supercharged, or high-RPM setups. Its forged construction and precise engineering justify the cost for those who demand the best in aftermarket parts. However, the **higher price, installation complexity, and necessity for proper torque application** make it less ideal for stock or lightly modified engines where budget or simplicity is a priority.

### **Recommendation**

- **Buy if:** You are building a **high-performance Chevy engine** (turbocharged, supercharged, or heavily modified), need maximum reliability, or plan to run the engine at extreme loads (e.g., towing, drag racing). The investment in ARP studs will pay off in longevity and peace of mind.

- **Consider alternatives if:** Your engine is stock or mildly tuned, and you want to save costs. In such cases, **OEM replacement studs or a reputable aftermarket brand** (e.g., JE, SCAT, or Holley) may offer sufficient strength at a lower price.

- **Pro Tip:** If installing yourself, use **ARP s Stud Wrench** and follow their torque sequence precisely. If unsure, consult a **header specialist or performance machine shop** to ensure proper installation.

For most **serious Chevy performance builds**, the ARP stud kit is a **strong recommendation** but weigh the cost against your engine s needs before committing.

Details:

Studs and bolts come either black oxide chrome Molly or Stainless 300. The Stainless 300 material is not affected by corrosion or extreme heat, making it ideal for the application. Factory Sealed - Brand new in box. Studs are manufactured with a unique nut-starter nose that helps prevent cross-threading.

Each ARP accessory stud or bolt kit includes the specific number of parts for your application, plus premium-quality washers and hex 12-point nuts, as required. Made from the highest quality materials. Specially drilled model's are available for those who wish to safety wire their header bolts prevent loosening. Built to outperform and outlast the competition.

Whats more, the compact 12-point nut let's you easily slip a socket close to pipe.

part #: tlx-arp100-1403-cl360a70 price

• $131.25

specifications cranshafengin:

• for makes: Chevy
• brand: Arp
• mpn: Tlx-arp100-1403-cl360a70
• part type: Header
• item weight: 1.0500
• fitment type: Direct Replacement
• generic keywords 1: See Notes
• intended use: Automobiles
• manufacturer warranty: 1 Year

returns cranshafengin:

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

payments cranshafengin:

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

offer cranshafengin:

• availability: In Stock
• quantity: 6
• sold: 0
• started: February 6, 2026
• options: Ship-to-home

general cranshafengin:

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

seller cranshafengin:

• city: Arlington, TX
• # reviews: 123891
• rating: 99.6%

shipping cranshafengin:

• class: Expedited
• transit: 4-8 Days
• cost: $0.00
• type: Fixed
• service: Expedited

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