1. Pistons, Rings, Rods & Parts Engines Components For Sale
  2. sku: 13579814794766762
  3. ARP 613-4250

ARP 613-4250 Bolt Kit 672036016012 S/s 12PT. 3/8-16 4.250

613-4250 Arp S/s Bolt Kit - 12pt. 5 3/8-16 X 4.250

( Brand: Arp ), ( Manufacturer Part Number: 613-4250 ), ( Part Type: Bolt ), ( Air Restricted: No ), ( UPC: 672036016012 )

Review ARP S/s Bolt Kit 12pt. 3/8-16 4.250 fits 250

The **ARP 613-4250 Stainless Steel Bolt Kit (12-Point, 3/8-16 Thread, 4.250" Length)** is a premium-grade fastening solution engineered for applications demanding exceptional durability, corrosion resistance, and precision. Crafted from high-quality **304 stainless steel**, this bolt kit delivers superior strength and longevity, making it ideal for outdoor, marine, industrial, and automotive environments where exposure to moisture, salt, or harsh chemicals is a concern. The **12-point drive** design ensures a secure, wrench-free grip, reducing the risk of slippage and stripping while providing a cleaner, more professional finish compared to traditional hex-head bolts. With a **3/8-16 thread pitch**, these bolts strike an optimal balance between load-bearing capacity and ease of installation, accommodating a wide range of hardware and mounting systems without compromising structural integrity. At **4.250 inches in length**, this kit offers versatility for medium-duty applications, from securing panels, brackets, or machinery to reinforcing critical joints in construction, fabrication, or DIY projects. The polished, corrosion-resistant finish not only enhances aesthetic appeal but also minimizes maintenance requirements, ensuring reliability over extended periods. Whether used in structural frameworks, automotive modifications, or marine rigging, the **ARP 613-4250 kit** combines performance, precision, and corrosion resistance to meet the demands of professional and high-performance applications.

### **Pros and Cons of buying a ARP 613-4250 Stainless Steel Bolt Kit (12-Point, 3/8-16, 4.250")**

#### **Pros:**

1. **High-Quality Material** The stainless steel construction ensures corrosion resistance, making it suitable for marine, automotive, and industrial applications where exposure to moisture or chemicals is common.

2. **Precision Machining** ARP (Advanced Racing Products) is known for tight tolerances and consistent threading, reducing the risk of stripping or misalignment.

3. **Durability** Stainless steel bolts are stronger than standard steel under high-stress conditions, reducing the likelihood of failure under heavy loads.

4. **Compatibility** The 3/8-16 thread size is a common automotive specification, making it easy to find washers, nuts, and other hardware if needed.

5. **Heat Resistance** Stainless steel maintains structural integrity at higher temperatures, which is beneficial in engine bay or exhaust applications.

6. **Aesthetic Appeal** The polished finish provides a cleaner look compared to black oxide or zinc-plated bolts, often preferred in high-end builds.

7. **Long-Term Reliability** Properly installed ARP bolts are designed for repeated disassembly and reassembly without losing integrity, making them ideal for tuners and racers.

8. **Warranty Support** ARP offers customer service and warranty coverage, which can be reassuring for high-stakes applications.

#### **Cons:**

1. **Higher Cost** Stainless steel bolts are more expensive than standard steel or zinc-plated alternatives, which may be a consideration for budget-conscious buyers.

2. **Potential for Over-Tightening** Stainless steel has a higher tensile strength than some other materials, so improper torque can lead to premature failure if bolts are over-torqued.

3. **Thread Stripping Risk** While ARP bolts are precision-made, improper installation (e.g., cross-threading or using the wrong washer) can still cause damage.

4. **Limited Availability** Specialty sizes like 4.250" may not be as widely stocked as common bolt lengths, requiring online ordering or specialty suppliers.

5. **Maintenance Considerations** Unlike coated bolts, stainless steel may show signs of wear or corrosion over time if exposed to harsh conditions, requiring periodic inspection.

6. **Not Ideal for All Applications** While excellent for high-stress engine components, stainless steel bolts may not be necessary for low-stress applications where standard bolts would suffice.

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### **Conclusion**

The **ARP 613-4250 Stainless Steel Bolt Kit** is a premium choice for applications requiring strength, corrosion resistance, and reliability particularly in performance automotive, marine, or industrial settings. Its precision engineering and durability justify the higher cost for serious builders and tuners. However, for basic or low-stress applications, standard bolts may be sufficient and more cost-effective.

### **Recommendation**

**Buy this kit if:**

- You are working on a high-performance engine build, racing application, or an environment where corrosion resistance is critical.

- You prioritize long-term reliability and plan to disassemble/reassemble components frequently.

- You are willing to invest in quality hardware that reduces the risk of failure under extreme conditions.

**Avoid this kit if:**

- You are on a tight budget and the application does not require stainless steel.

- You lack experience with high-stress bolted joints and may risk overtightening.

- The bolts are for a one-time, low-stress installation where standard hardware would suffice.

For most performance-oriented builds, the **ARP 613-4250 kit is a strong recommendation** due to its proven track record and value in high-demand applications.

Details:

Set includes five bolts for versatile fastening needs. They are versatile and compatible with various systems that require precise threading robust fastening solutions. Features: Material: Stainless steel for corrosion resistance and durability. Their universal compatibility makes them suitable for automotive, motorcycle, and other industrial applications.

length : 4.250 inches suitable for various applications. This ARP stainless steel bolt kit features high-quality construction designed for durability and corrosion resistance. Thread Size: 3/8-16 with a 12-point head for easy installation. Each bolt has a 3/8-16 thread and measures 4.250 inches in length , making it suitable for wide range of automotive industrial applications.

Designed by ARP, a trusted name in fasteners, these bolts meet high standards for quality and performance. The bolts are equipped with a 12-point head design, allowing for easier installation and removal in tight or hard-to-reach spaces. Crafted from premium stainless steel, these bolts offer strength and longevity, ensuring secure fastening over time. Universal application compatible with automotive and industrial projects.

Designed by ARP, a trusted manufacturer of high-quality fasteners. The polished finish ensures a sleek appearance along with enhanced protection against rust and oxidation, ideal for both performance restoration projects. The set includes five bolts, providing a reliable solution for fastening needs in demanding environments.

part #: 6134250 prices

  • $32.56-$52.44

specifications pistonrinro:

  • brand: Arp
  • mpn: 613-4250
  • part type: Bolt
  • air restricted: No
  • upc: 672036016012

offer pistonrinro:

  • options: Ship-to-home
  • availability: In Stock
  • started: May 12, 2026
  • quantity: 2
  • sold: 0

payments pistonrinro:

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

shipping pistonrinro:

  • cost: $13.99
  • type: Fixed
  • class: Expedited
  • service: UPS 3 Day Select, Expedited
  • carrier: UPS
  • transit: 2-4 Days

general pistonrinro:

  • condition: New
  • Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts

returns pistonrinro:

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

seller pistonrinro:

  • # reviews: 5742
  • city: Tampa, Florida
  • rating: 99.8%
part type: bolt, air restricted: no,
category: auto parts > car truck parts accessories > engines engine parts > connecting rods parts, sku: 13579814794766762,
Arp 613-4250 Is Similar To:
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5 offers $32.56–$52.44 USD
  • New. Offer #1 priced at $32.56 + $12.99 shipping estimate = $45.55* total. Matching nuts are also available . Now you can use premium quality ARP stainless steel or chrome moly fasteners to install most anything on a car, boat or trailer.+$12.99 shipping
  • New. Offer #2 priced at $42.28 + $15.99 shipping estimate = $58.27* total. The polished finish ensures a sleek appearance along with enhanced protection against rust and oxidation, ideal for both performance and restoration projects. This ARP stainless steel bolt kit features high-quality construction designed for durability and corrosion resistance.+$15.99 shipping
  • New. Offer #3 priced at $52.44 + $0.00 shipping estimate = $52.44* total. If a defect is identified after this period, it will fall under the manufacturer's warranty and should be handled directly with them.FREE SHIPPING
  • New. Offer #4 priced at $49.51 + $0.00 shipping estimate = $49.51* total. Each bolt is equipped with a 12-point head, providing increased torque transfer and easy installation with standard tools. The polished stainless steel construction ensures a clean appearance and resistance to rust, making them ideal for both indoor and outdoor use.FREE SHIPPING
  • New. Offer #5 priced at $51.00 + $0.00 shipping estimate = $51.00* total. The bolts are crafted from polished stainless steel, ensuring corrosion resistance and a sleek appearance. This ARP stainless steel bolt kit features high-quality hardware designed for durability and reliability in various applications.FREE SHIPPING

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