CUSTOM 234-4342 Heli Coil Gm Arp Head Stud Washer Nut 6.2L 12MM 1.75 5.3

( Brand: Custom ), ( Manufacturer Part Number: 234-4342 ), ( Part Type: Coil Head Washer ), ( Oe/oem Part Number: 234-4343 ), ( Vintage Part: No ), ( California Prop 65 Warning: Warning ), ( Performance Part: Yes )

Review CUSTOM Long Heli coil Gm 6.2l 12mm 1.75 Gen 5.3 Arp Head Stud Washer Nut

High-Performance ARP Head Stud Washer Nut and Heli-Coil for GM 6.2L V8 Engines

The 234-4342 Heli-Coil GM 6.2L 12mm 1.75 Gen 5.3 ARP Head Stud Washer Nut Kit is a comprehensive solution for enhancing the durability and performance of your General Motors 6.2L V8 engine. This precision-engineered set is designed specifically for the LS3, L99, and LS9 engines, catering to both enthusiasts and professional mechanics who demand superior quality and reliability.

At the heart of this kit is the ARP 12mm Head Stud Washer Nut. ARP is renowned for its high-strength fasteners, and this nut is no exception. Manufactured from forged 625-grade alloy, it offers exceptional tensile strength and fatigue resistance, ensuring a secure and long-lasting bond between your head studs and engine block. The washer nut features a unique self-locking design, which eliminates the need for locking compound, reducing the risk of stud pull-through during high-stress situations.

Accompanying the ARP Head Stud Washer Nut is a Heli-Coil repair kit. Heli-Coil is a renowned brand in tapping technology, and this kit allows you to repair stripped or damaged threads in your engine block, ensuring a secure mounting surface for your new head studs. The kit includes a tapping tool, Heli-Coil inserts, and installation instructions, making it easy for both beginners and experienced mechanics to install.

In summary, the 234-4342 Heli-Coil GM 6.2L 12mm 1.75 Gen 5.3 ARP Head Stud Washer Nut Kit is an essential upgrade for any GM 6.2L V8 engine. With its high-strength ARP washer nut and Heli-Coil repair kit, you can rest assured that your engine will withstand the demands of high-performance applications, delivering increased power, reliability, and longevity.

1. High-Quality Material: The ARP head studs are known for their durability and strength due to the high-quality materials used in their manufacturing.

2. Enhanced Engine Performance: These studs can help improve the engine's performance by reducing the chance of head gasket failure, which can lead to increased horsepower and torque.

3. Compatibility: These studs are specifically designed for the GM 6.2L engine, ensuring a perfect fit and optimal performance.

4. Includes Washer and Nut: The kit includes all necessary components, such as the washer and nut, making it a convenient and all-in-one solution.

1. Cost: ARP head studs are generally more expensive compared to standard studs due to the high-quality materials and precision manufacturing.

2. Installation: Installing ARP head studs can be a complex process and may require professional assistance, which could add to the overall cost.

3. Potential for Over-Tightening: If not installed correctly, there is a risk of over-tightening the nuts, which could lead to engine damage.

In conclusion, while the 234-4342 Heli-Coil GM 6.2L 12mm 1.75 Gen 5.3 ARP Head Stud Washer Nut offers several benefits such as improved engine performance and high-quality materials, its high cost and potential for installation issues should be considered. If you are comfortable with the installation process or are willing to pay a professional to do it for you, this product could be a worthwhile investment for enhancing your engine's performance. However, if cost is a concern or you are not comfortable with the installation process, standard studs may be a more suitable option for your needs.

Details:

Picture of part number and ARP box for reference only. Used once, what this setup is able to do repair head bolt threads on a GM 5.3L 6.2L 2015 GEN V engines. Luckily it was the front corner stud outside valve cover. Two Custom bushings for aligning the taps in hole.

Insert the heli-coil and add stud so you transfer twisting torque from block to nut washer on. Regular 9/16 drill bit. I was down to torquing the last head bolt and it turned mush. 12 long 31/64 HSS drill bit.

When you pull the threads out of block when torquing OEM head bolts down. Use a heli-coil tap set to drill and the block for insert. Standard 12mm x 1.75 Heli-Coil kit modified.

part #: 2344342 price

• $249.69

specifications cylinderheapar:

• brand: Custom
• mpn: 234-4342
• part type: Coil Head Washer
• oe/oem part number: 234-4343
• vintage part: No
• california prop 65 warning: Warning
• performance part: Yes

offer cylinderheapar:

• options: Ship-to-home
• started: October 17, 2025
• availability: In Stock
• quantity: 1
• sold: 0

general cylinderheapar:

• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads

shipping cylinderheapar:

• type: Calculated
• cost: $10.94
• class: Standard
• transit: 4-8 Days
• carrier: USPS
• service: USPS Ground Advantage

returns cylinderheapar:

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

seller cylinderheapar:

• city: Pleasant Grove, California
• # reviews: 2513
• rating: 100.0%

payments cylinderheapar:

• wallet: Paypal
• other
• credit card: Diners-club

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