ARP 612-1250 Bolt Kit Pack Thread Head 5/16 1.250

( Brand: Arp ), ( Manufacturer Part Number: 612-1250 ), ( Warranty: 1 Year ), ( Color: Silver ), ( Finish: Polished ), ( Head Type: 12-point ), ( Material: Stainless Steel ), ( Quantity: Pack Of 5 ), ( Socket Size: 3/8 Inch ), ( Thread Size: 5/16 Inch-18 ), ( Type: Standard ), ( Under Head Length: Standard 1-1/4 Inch )

Review ARP Sae Bolt Kit Pack 5/16 Inch Thread 1.250 Under Head Length fits 250 2018

The ARP 612-1250 Bolt Kit is a premium quality fastener solution designed for applications requiring 5/16 inch, 18 thread, 1.250 inch head bolts. This bolt kit, manufactured by ARP, a leading name in the automotive aftermarket industry, is engineered to provide superior strength, reliability, and durability.

The ARP 612-1250 Bolt Kit comprises a set of high-tensile bolts, specifically designed to withstand the extreme pressures and stresses encountered in high-performance automotive applications. Each bolt is cold-forged from high-strength material and then heat-treated to ensure maximum load capacity and fatigue resistance.

These bolts come with ARP's proprietary J-sealing technology, which features a unique washer design that provides an effective sealing method while maintaining the clamping load. The J-sealing design eliminates the need for additional sealing methods like gaskets or locking compounds, simplifying the installation process and reducing the risk of leaks.

The 5/16 inch, 18 thread, 1.250 inch head bolts in this kit are suitable for various applications, including engine building, performance upgrades, and race car engines. The 18 thread pitch ensures a secure connection between the fastener and the mating components, while the 1.250 inch head diameter provides a generous contact area, enhancing the clamping force.

Each bolt in the ARP 612-1250 Bolt Kit is finished with a black oxide coating. This protective coating not only gives the bolts an attractive appearance but also provides an essential layer of corrosion resistance, ensuring that the bolts maintain their strength and functionality even in harsh environments.

The ARP 612-1250 Bolt Kit comes with a comprehensive range of bolts, ensuring that you have the right number of bolts for your project. The kit includes bolts with various lengths to cater to different applications, ensuring a perfect fit and optimal performance.

In summary, the ARP 612-1250 Bolt Kit is an essential tool for automotive enthusiasts, race teams, and engine builders seeking superior strength, durability, and reliability from their fasteners. With their innovative J-sealing technology, high-strength materials, and protective coatings, these bolts deliver unmatched performance and peace of mind.

ARP 612-1250 Bolt Kit Pack (5/16, 18 thread, 1.250 head): A Comprehensive Analysis

The ARP 612-1250 bolt kit is a popular choice for engine builders and automotive enthusiasts who require high-performance hardware for their applications. This bolt kit, with a 5/16 inch hex head and 18 thread pitch, is designed for 1.250 inches (31.75mm) head size. In this analysis, we will discuss the advantages and disadvantages of investing in the ARP 612-1250 bolt kit.

1. High-strength: ARP bolts are known for their high-strength capabilities. The 612-1250 bolt kit offers increased clamping force compared to standard bolts, ensuring better engine performance and reliability.

2. Corrosion resistance: ARP bolts are made from high-quality materials, including 6061-T6 aluminum and 4340 chromoly steel. These materials offer excellent resistance to corrosion and wear, making the bolts ideal for various environments.

3. Precision manufacturing: Each bolt in the ARP 612-1250 kit is manufactured using precise machining techniques and undergoes rigorous testing, ensuring consistent quality and high thread engagement.

4. Applicability: The 5/16 inch hex head and 18 thread pitch make this bolt kit suitable for various applications, including engine, transmission, and differential bolts.

5. Racing heritage: ARP bolts have a strong reputation in the racing industry due to their high-performance capabilities and durability.

1. Cost: ARP bolts are generally more expensive than standard bolts. The 612-1250 bolt kit, in particular, is a premium option, which might not be affordable for all enthusiasts.

2. Overkill for some applications: For stock engines or applications that do not require high clamping force, the ARP 612-1250 bolt kit might be considered an overkill, leading to unnecessary expense.

3. Installation: Installing ARP bolts may require specialized tools, including an ARP torque wrench or an impact wrench with the appropriate socket.

4. Thread damage: Using ARP bolts in engines with damaged threads might not yield the intended benefits, as the bolts may not effectively engage with the damaged threads.

The ARP 612-1250 bolt kit offers numerous advantages, such as high strength, corrosion resistance, and precision manufacturing. However, it also comes with a higher price tag and may not be necessary for all applications. If you're building a high-performance engine or require bolts for a racing application, investing in the ARP 612-1250 bolt kit could be a worthwhile investment. For more standard applications, it might be wise to consider more affordable alternatives.

If you're looking for a high-performance bolt kit for your engine or transmission build, the ARP 612-1250 bolt kit is an excellent choice. However, be prepared for the additional cost and ensure that you have the required installation tools. If your application doesn't necessitate the increased clamping force and durability offered by ARP bolts, you might consider more affordable alternatives. Always consult with a professional mechanic or engine builder for the best advice regarding your specific application.

Details:

These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, Indy Car, NASCAR and NHRA drag racing marine applications. ABOUT THE BRAND: Raps product line contains thousands of part numbers and has expanded to include virtually every fastener found in an engine driveling throughout the suspension frame.

part #: 6121250 prices

• $26.55-$29.24

specifications toolssupp:

• for years: 2018
• brand: Arp
• mpn: 612-1250
• warranty: 1 Year
• color: Silver
• finish: Polished
• head type: 12-point
• material: Stainless Steel
• quantity: Pack Of 5
• socket size: 3/8 Inch
• thread size: 5/16 Inch-18
• type: Standard
• under head length: Standard 1-1/4 Inch

offer toolssupp:

• started: March 11, 2025
• sold: 0
• quantity: 5
• options: Ship-to-home
• availability: In Stock

returns toolssupp:

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

payments toolssupp:

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

seller toolssupp:

• city: Daytona Beach, Florida
• # reviews: 397
• rating: 98.0%

shipping toolssupp:

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

general toolssupp:

• Motors > Automotive Tools Supplies > Other Auto Tools Supplies
• condition: New

Arp 612-1250 Is Similar To:

• Arp 200-8533 Sae Washer Kit 10 Pack 7 8 Inch O.d 1 2 I.d 0.120 Thickness (47.4% similar) About the brand: Raps product line contains thousands of part numbers and has expanded to include virtually every fastener found in an engine driveling throughout the suspension frame. 0.120 thickness. These range from quality high performance oem replacement parts to exotic specialty hardware...(March 20th, 2025)
• Arp 646-1750 Hex Sae Bolt Kit (40.4% similar) Designed utilizing the menu. Special attention: anti-seize should be used on all stainless steel fasteners. Designed utilizing the latest technology, this product by Arp features premium quality and will perform better than advertised. Part type: bolts and screws product line: Arp stainless steel...(October 31st, 2025)
• Arp 134-4001 Head Studs Pro Series (26.8% similar) Arp pro series cylinder head studs 134-4001 are cold-forged to ensure molecular integrity. They're heat-treated prior to thread rolling and machining. Arp pro series kits are also available with 12-POINT nuts, and all studs come complete hardened parallel washers for an even load distribution...(November 3rd, 2025)
• Arp 912-0002 Zinc Steel Thread Cleaning Tap 10mm X 1.25 (37.6% similar) No other accessories included. See photos above. Comes as shown. See condition above for more details. Receive only what is pictured/listed...(January 14th, 2026)
• Arp 713-1000 3 8-24 X 1 Inch Stainless Steel Bolts Pack Of 5 (26.1% similar) Crafted from durable stainless steel, they offer excellent corrosion resistance and strength, making them suitable for demanding environments. Ideal for engine assembly, chassis work, or custom modifications, these bolts provide reliable fastening in various automotive tasks. Designed with...(March 23rd, 2026)