ARP Pro Connecting Rod Bolt Kit 672036024505 3/8 1.5

( Brand: Arp ), ( Part Type: Rod Bolt ), ( Air Restricted: No ), ( UPC: 672036024505 )

Review ARP Pro Series Connecting Rod Bolt Kit 3/8 In 1.5 Long Nickel Cobalt

The **ARP 672036024505 Pro Connecting Rod Bolt Kit** represents the pinnacle of high-performance engine assembly, engineered to deliver unmatched strength, precision, and reliability for the most demanding applications. Designed specifically for critical engine components, this kit features **3/8-inch diameter bolts** with a **1.5-inch shank length**, making it an ideal choice for high-output, forced-induction, or heavily modified engines where conventional fasteners fall short. Each bolt in this kit is crafted from **ARP s proprietary 300M steel**, a high-strength alloy known for its exceptional tensile strength, fatigue resistance, and ability to withstand extreme stresses without deformation or failure. The bolts undergo a rigorous **multi-stage heat treatment process**, including quenching and tempering, to achieve an optimal balance of hardness and toughness, ensuring they can endure the relentless forces generated by aggressive engine builds. The **fine-threaded design** enhances grip and load distribution across the rod caps, reducing the risk of stripping or loosening under high RPMs or heavy loads, while the **smooth, polished finish** minimizes friction and wear during installation and removal.

What truly sets this kit apart is ARP s **Pro Series** technology, which incorporates **precision-machined features** such as a **smooth, tapered shank** and a **consistent thread profile** that aligns perfectly with modern engine components. This attention to detail ensures a snug, interference-fit connection with rod caps and bearings, eliminating the play or slippage that can compromise engine integrity over time. The bolts are also **pre-lubricated with a high-temperature, anti-seize compound**, which prevents galling and corrosion while allowing for easier installation even in tight or hard-to-reach spaces. Whether you re building a **supercharged V8, a turbocharged inline-six, or a high-revving race engine**, this kit provides the confidence of knowing your connecting rods are secured by fasteners that have been rigorously tested to exceed industry standards, including **static load, fatigue, and proof-load testing** to ensure they hold under extreme conditions.

Beyond performance, the **ARP 672036024505 Pro Connecting Rod Bolt Kit** is built for durability and longevity. The bolts are **coated with a protective layer of ARP s proprietary black oxide finish**, which enhances corrosion resistance and reduces the risk of rust or seizing in humid or salt-laden environments. Each bolt is **individually inspected and tested** to guarantee consistency and quality, with a **certification tag** included to verify authenticity and traceability. The kit is packaged in a **durable, clearly labeled ARP container**, ensuring the bolts remain protected during transport and storage. For engine builders, tuners, and racers who demand nothing less than the best, this kit is not just an upgrade it s a **critical component** that transforms a high-performance engine from a potential liability into a **reliable, high-revving powerhouse** capable of handling the most aggressive modifications. Whether you re pushing the limits on the track or chasing top-tier horsepower on the street, the **ARP 672036024505 Pro Connecting Rod Bolt Kit** is the ultimate choice for those who refuse to compromise on strength, precision, or performance.

### **Pros and Cons of buying a ARP 672036024505 Pro Connecting Rod Bolt Kit (3/8" x 1.5")**

1. **High-Quality Materials** ARP bolts are forged from high-strength steel, ensuring durability and resistance to fatigue, corrosion, and heat. This makes them ideal for high-performance and racing applications where reliability is critical.

2. **Precision Manufacturing** ARP bolts are machined to tight tolerances, reducing the risk of stripping or failure under extreme stress. This precision is particularly beneficial in engines where bolt stretch and clamping force consistency are essential.

3. **Thread Locking Capability** The kit includes ARP s proprietary **Thread Locker** (a high-temperature, non-shrinking adhesive), which prevents loosening due to vibration or thermal cycling. This is crucial in high-RPM or high-torque applications where standard locktight methods may fail.

4. **Heat and Corrosion Resistance** ARP bolts are treated with a **black oxide finish**, which provides excellent resistance to corrosion and high-temperature oxidation. This ensures long-term performance in demanding environments.

5. **Compatibility with High-Performance Engines** These bolts are designed to meet or exceed the requirements of turbocharged, supercharged, and naturally aspirated high-performance engines. They are often used in forced-induction builds where standard bolts may not suffice.

6. **Warranty and Reputation** ARP is a well-established brand in the performance aftermarket with a strong reputation for quality. Their products come with warranties, and they offer technical support, which adds confidence in the purchase.

7. **Easy Installation** The bolts include **ARP s proprietary thread locker**, which simplifies installation compared to traditional methods like thread sealant or locktight. They also feature a **torque-to-yield design**, meaning they stretch slightly under load to maintain consistent clamping force.

8. **Versatility** The 3/8" x 1.5" size is a common bolt specification for many high-performance engines, making this kit suitable for a wide range of applications, including aftermarket rod kits, turbocharged builds, and high-compression engines.

---

1. **Cost** ARP bolts are significantly more expensive than standard aftermarket or OEM bolts. For example, a kit of 12 bolts may cost several hundred dollars, which can be a substantial investment compared to cheaper alternatives.

2. **Overkill for Mild Applications** If you are running a stock or mildly modified engine with no forced induction, these bolts may be unnecessary. Standard high-quality aftermarket bolts (e.g., from **Eagle, Mucoff, or ARP s lower-tier kits**) could suffice at a fraction of the cost.

3. **Specialized Tools Required** While not strictly a con, ARP bolts often require **torque wrenches with high precision** (e.g., digital or beam-type) to achieve the correct clamping force. Misapplication of torque can lead to premature failure or inadequate clamping.

4. **Limited Availability of Replacement Parts** If a bolt fails (though rare with ARP), sourcing a replacement may be more difficult than for more common brands. However, ARP s warranty typically covers defects.

5. **Installation Knowledge Required** Proper installation involves **correct torque specification, thread locker application, and sometimes preloading procedures**. Improper installation can negate the benefits of the bolts, so it s important to follow ARP s guidelines or consult a professional.

6. **Weight** ARP bolts are heavier than standard bolts due to their forged construction. While this adds strength, it may contribute slightly to rotating mass in high-RPM applications, though the impact is usually negligible.

---

The **ARP 672036024505 Pro Connecting Rod Bolt Kit** is one of the best options available for high-performance, forced-induction, or heavily modified engines where reliability and durability are paramount. Its superior materials, thread locking, and precision engineering justify the higher cost for applications where failure is not an option. However, for stock or mildly modified engines, the expense may not be warranted, and more affordable alternatives could be sufficient.

- You are running a **turbocharged, supercharged, or high-compression engine** with significant power gains.

- You prioritize **maximum reliability and longevity** in extreme conditions.

- You are building a **race or high-performance street engine** where bolt failure could be catastrophic.

- You already own other ARP components and want **consistency** across your build.

- Your engine is **stock or mildly modified** with no forced induction.

- You are on a **tight budget** and can find equally strong alternatives (e.g., **Eagle, Mucoff, or ARP s lower-tier kits**) at a lower cost.

- You lack the **tools or expertise** to install them correctly (consult a professional if unsure).

For most **high-performance builds**, the ARP bolts are an excellent investment. For everything else, a **high-quality aftermarket bolt kit** from a reputable brand may offer a better cost-to-benefit ratio. Always ensure proper torque application and follow ARP s installation guidelines if you proceed with this kit.

Details:

Designed for durability and strength, this kit features eight high-quality bolts made from nickel-cobalt alloy, ensuring excellent resistance to heat fatigue. Each bolt measures approximately 1.5 inches in length with a 3/8-inch diameter, providing reliable fit for wide range of engine applications. Designed for high-performance applications and durability. Size: 3/8 inch diameter, 1.5 length .

Features: Material: Nickel cobalt alloy for enhanced strength and corrosion resistance. The nickel cobalt finish not only enhances corrosion resistance but also contributes to the overall longevity of components. Easy to install, these bolts come in a set of eight, offering comprehensive solution for connecting rod reinforcement or replacement needs. Set of 8 bolts for complete engine application.

Whether you're building a new performance engine or restoring an existing one, the ARP Pro Series Connecting Rod Bolt Kit delivers dependable strength and precision fitment for optimal operation. Raps Pro Series bolts are engineered to withstand the stresses of high-performance engines, making them ideal for racing, rebuilding, or upgrading existing setups. Universal fit suitable for various engine model's.

specifications pistonrinro:

• brand: Arp
• part type: Rod Bolt
• air restricted: No
• upc: 672036024505

general pistonrinro:

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

seller pistonrinro:

• city: Saint Paul, Minnesota
• # reviews: 45600
• rating: 98.5%

payments pistonrinro:

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

returns pistonrinro:

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

offer pistonrinro:

• sold: 0
• quantity: 3
• started: March 29, 2026
• options: Ship-to-home
• availability: In Stock

shipping pistonrinro:

• type: Fixed
• service: Standard
• transit: 3-5 Days
• class: Standard
• cost: $0.00

Arp 672036024505 Is Similar To:

• 004 158h-arp Aa Performance Chromoly Rod Porsche Vw Type (29.2% similar) These are forged chorally steel with high strength Arp 2000 bolts. Marketing, listing apps, application. Supply is limited. Not Carrillo, CB, eagle or scat. Boxes and APO FPO addresses. This is a brand new set of h-beam connecting rods for the VW Porsche type 4 air cooled engine...(November 5th, 2018)
• H693cp.060 Federal Mogal Chevrolet Pistons Connecting Arp Bolts (36.1% similar) Part number on pistons is H693CP. This is a great set of pistons and connecting rods with Arp bolts. Really good condition there is not rings with pistons. They are like new, only used for a few hours...(August 5th, 2019)
• Maxpeedingrods Sl8ozy 8 Pcs En24 4340 Forged Connecting Rods Arp 8740 Bolts For Chevrolet Small Block (36.3% similar) 215,000-220,000 psi. Shot-preened finish to remove potential for stress risers, 6.HIGH precision CBC machined,precision rod cap alignment dowels, 7.BORES finished /- .01MM, 8.BALANCED within 1PER rod, a weak rod bolt in a racing engine means catastrophic disaster and will put your life at risk. Each...(August 15th, 2023)
• Maxpeedingrods P1xyc7 4pcs Connecting Rods For 4g63 2nd Gen And Lancer Evo 7 Bolt Conrod Bielle Arp 2000 (31.4% similar) Full physical. Applications. 4PCS connecting rods for 4G63 2ND gen lancer Eco 7 bolt Conrad belle Arp 2000 . For 4G63 2ND gen lancer Eco 7 bolt, note to length :156MM/6.142. Will not fit 1g 4G63 6 bolt engines. Telephone number. For talon for RSI 1993 -1998, Mitsubishi eclipse gs 1993 -1994, GST...(August 28th, 2023)
• Maxpeedingrods 0i3fmy New 4340 Forged Connecting Rods Arp Bolts For Honda Civic L15b7 L15b9 Vtc Turbo (35.2% similar) For Honda L15B7 Tc turbo, 2016 for civic turbo us, Canada, china, 2017 Si Canada m Rico, Cr-v, non-LX aura CDC china, 2018 accord us Canada, please double confirm the dimensions to ensure get right parts, -, pin type: floating piston. Best costumer service. V product test and ISO 9001 ...(September 2nd, 2023)
• Maxpeedingrods 548ja0 Forged H-beam Connecting Rods Arp Bolts For Hyundai 1.6 Gamma T-gdi G4fj 130.8mm (35% similar) All big and small ends are finished with sunken honing machine, precision alignment sleeves positively locate the rod cap, maintaining end bore size eliminating cap walk, -100% x-rated, sonic tested , -multi-stage heat treated, shot preened to relieve stress, come bronzed bushing suitable for ...(September 2nd, 2023)
• Manley Performance 14437-6 For 2016 Nissan Vr30ddtt 5.975in Tuff I Beam Connecting Rod Set Arp 2000 (27.8% similar) Manley for 2016 Nissan VR30DDTT 5.975IN turbo tiff pro series I beam connecting rod set w/ Arp 2000...(September 2nd, 2023)
• Maxpeedingrods G4n3if 4340 Connecting Rod arp 2000 Bolt For Bmw 1 Series F20 2010-2018 Hatchback 120i (36.3% similar) Fastener yield psi. A weak rod bolt in a racing engine means catastrophic disaster and will put your life at risk. V product test and ISO 9001 certified, us Facebook account: . It secure the connecting rod and bearing to crankshaft. Advertised horsepower RATING:200HP/PIECE, top acceleration: ...(September 22nd, 2023)
• Maxpeedingrods Quej2s Forged Connecting Rod And Arp Bolts For Volvo 850 C70 T5 2.3l B5234t Conrod 800hp (37% similar) Fastener yield psi. A weak rod bolt in a racing engine means catastrophic disaster and will put your life at risk. us Facebook account: . We care about your engine as much you do. Shot-preened finish to remove potential for stress risers, 6.HIGH precision CBC machined,precision rod cap alignment ...(September 24th, 2023)
• Maxpeedingrods Wacu9h 5pcs H-beam Connecting Rods Conrods For Volvo 850 C70 T5 2.3l With Arp 2000 Bolts (26.1% similar) us Facebook account: . We care about your engine as much you do. V certification con rods. H-beam design reduces weight without compromising strength. Provide a wear-resistant layer, which greatly prolongs the service life of parts: the strength is suitable for high-horsepower applications while ...(October 3rd, 2023)
• Maxpeedingrods 41vbty H-beam Connecting Rods Arp Bolts For Audi S3 A3 A4 A6 Tt 1.8t Engines 144 20mm (39.8% similar) Introduction. A connecting rod, also called a con is the part of engine which connects piston to crankshaft. Manufacturer. Quick, simple. Always the correct part. Advertised horsepower RATING:200HP/PIECE, top acceleration: 9000RPM, package size 28CM 21CM 10CM. Together with the crank, connecting rod...(October 7th, 2023)