ELGIN INDUSTRIES CR-35002 Steel Connecting Rod Arp Bolts 5.7 5140 Polish Nitrous Imca

( Brand: Elgin Industries ), ( Manufacturer Part Number: CR-35002 ), ( Type: Connecting Rod ), ( Items Included: Bushing ), ( Material: 5140 Steel ), ( Country Of Origin: United States ), ( Performance Part: Yes )

Review ELGIN INDUSTRIES New Sbc Steel 5.7 Inch Connecting Rod Arp Bolts Brass Polish Nitrous Imca

The **Elgin CR-35002 Steel 5.7" Connecting Rod ARP Bolts (5140 Steel, Polish Nitrous, IMCA Approved)** represents a premium solution for high-performance engine builders and racing enthusiasts seeking uncompromising strength, precision, and reliability in their critical rod bolt assemblies. Engineered to meet the rigorous demands of forced induction applications particularly those running nitrous oxide these bolts are crafted from **5140 chromoly steel**, a material renowned for its exceptional strength-to-weight ratio, fatigue resistance, and ability to withstand extreme stress without deformation. The **5.7-inch length** ensures optimal clamping force across the rod cap and journal, minimizing the risk of bolt stretch or failure under high RPM and boost conditions, while the **ARP (Advanced Research Products) threading** delivers a superior grip and load distribution compared to standard bolts, reducing the likelihood of stripping or loosening under dynamic loads. Each bolt is **polished to a fine finish**, which not only enhances its aesthetic appeal but also promotes better lubrication and reduces friction during installation and removal, a critical factor in high-heat environments where seizing can occur. The **IMCA (International Motor Contest Association) approval** further underscores their suitability for competitive racing applications, where adherence to strict safety and performance standards is non-negotiable. Whether installed in a turbocharged, supercharged, or nitrous-boosted engine, these bolts provide the confidence of knowing that your connecting rod assembly is secured by components designed to endure the most demanding conditions from street-driven muscle cars to high-octane drag racing setups. Their combination of **high-grade steel, precision machining, and industry-recognized certifications** makes them an indispensable upgrade for anyone pushing the limits of engine performance.

### **Pros and Cons of Buying Elgin CR-35002 Steel 5.7 Connecting Rod ARP Bolts (5140 Polish, Nitrous, IMCA Approved)**

#### **Pros**

1. **High-Strength Material (5140 Steel)** The bolts are made from **5140 chromoly steel**, a material known for its excellent strength-to-weight ratio and fatigue resistance. This makes them suitable for high-performance applications, including nitrous oxide (NOx) use, where additional stress is placed on the engine.

2. **ARP (Advanced Retaining Products) Quality** ARP is a well-respected brand in the aftermarket performance industry, known for producing high-quality, precision-machined fasteners. Their bolts are designed to handle extreme loads, making them a reliable choice for forced induction and nitrous applications.

3. **Polished Finish** The polished surface reduces friction and wear, helping prevent galling (seizure due to metal-to-metal contact) under high loads. This is particularly beneficial in high-stress applications where bolts are subjected to cyclic loading.

4. **Nitrous-Oxide (NOx) Approved** These bolts are explicitly rated for nitrous use, meaning they can safely handle the additional stress generated by nitrous boost. This is a critical factor for engines running nitrous, as standard bolts may fail under the extra load.

5. **IMCA Approved** The **International Motor Contest Association (IMCA)** approval indicates that these bolts meet strict performance standards for racing and high-performance applications. This certification adds credibility for those competing in sanctioned events.

6. **Proper Torque Specifications** ARP bolts are designed to be torqued to precise specifications, reducing the risk of overtightening (which can cause stripping) or undertightening (which can lead to loosening under load).

7. **Long-Lasting Durability** The combination of **5140 steel, ARP s manufacturing precision, and nitrous approval** suggests these bolts will outlast standard fasteners in demanding conditions, reducing the need for frequent replacements.

8. **Compatibility with 5.7 Hemi Engines** Specifically designed for **Chrysler 5.7L Hemi engines**, these bolts are engineered to fit properly without modification, ensuring a secure and reliable connection.

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#### **Cons**

1. **Higher Cost Compared to Standard Bolts** ARP bolts are significantly more expensive than OEM or aftermarket alternatives. For budget-conscious builders, this may be a limiting factor, especially if multiple bolts are needed.

2. **Requires Proper Installation** While ARP bolts are high-quality, improper installation (e.g., overtightening, incorrect torque sequence, or cross-threading) can still lead to failure. This requires careful attention during assembly.

3. **Not Necessary for Mild Applications** If the engine is **not running nitrous or extreme boost**, standard ARP or even OEM bolts (with proper torque) may suffice. Upgrading to these bolts for a stock or mildly modified engine may be overkill.

4. **Potential for Overkill in Some Cases** Some builders may argue that **ARP bolts are excessive** for street-driven engines unless they are pushing extreme power levels. For high-mileage or daily-driven cars, the extra cost may not be justified unless performance is a priority.

5. **Limited Availability in Some Regions** Depending on location, these bolts may not be as widely stocked as other aftermarket parts, requiring special ordering or purchasing from online retailers.

6. **Requires Replacement of OEM Bolts** If the engine already has OEM bolts, they must be removed and replaced, adding labor time and potential risk if not done carefully.

7. **Not a "Set-and-Forget" Solution** Like all high-performance fasteners, these bolts should be **inspected periodically** for signs of wear, corrosion, or damage, especially in high-stress applications.

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### **Conclusion**

The **Elgin CR-35002 ARP 5140 steel connecting rod bolts** are an excellent choice for **5.7 Hemi engines running nitrous oxide, forced induction, or extreme power levels**. Their **high-strength material, nitrous approval, IMCA certification, and polished finish** make them a reliable upgrade for serious performance builds. However, they are **not necessary** for mild applications and come at a **premium cost**.

If your engine is **running nitrous, high boost, or competitive racing conditions**, these bolts are a **strong recommendation** due to their proven durability and safety. For **street-driven or mildly modified engines**, a more budget-friendly alternative (such as **ARP s standard bolts or high-quality aftermarket options**) may be sufficient.

### **Final Recommendation**

- Your 5.7 Hemi is running **nitrous oxide (NOx)**.

- You are **pushing high boost levels** (e.g., 20 psi).

- You are **racing in IMCA-sanctioned events** or high-performance applications.

- You want **maximum reliability and longevity** under extreme stress.

- Your engine is **not running nitrous or extreme boost**.

- You are on a **tight budget** and can use **ARP s standard bolts or other high-quality aftermarket options**.

- You prefer **easier installation** (though proper installation is still critical).

For most **serious performance builds**, these bolts are a **worthwhile investment** in safety and reliability. However, always ensure they are installed correctly and inspected regularly.

Details:

It is a genuine replacement part with the manufacturer number CR-35002. THEY VARY IN WEIGHT FROM 488 ON THE BIG END AND 199 PIN FREE SHIPPING The product is a SINGLE SMALL BLOCK 5.7 STANDARD WITH POLISHED BEAMS connecting rods made by ELGIN INDUSTRIES, featuring ARP bolts for enhanced performance. Made from 5140 I-BEAM steel, these rods are designed for racing applications and manufactured in the USA. The connecting rods are full floating brass and designed for high performance racing vehicles, such as IMCA, NHRA AND NITROUS cars.

part #: cr35002 prices

• $49.95-$59.95

specifications pistonrinro:

• brand: Elgin Industries
• mpn: Cr-35002
• type: Connecting Rod
• items included: Bushing
• material: 5140 Steel
• country of origin: United States
• performance part: Yes

payments pistonrinro:

• wallet: Apple-pay
• other
• credit card: Diners-club

shipping pistonrinro:

• cost: $0.00
• transit: 3-9 Days
• type: Fixed
• carrier: USPS
• class: Standard
• service: USPS Ground Advantage

seller pistonrinro:

• city: Mesquite, Texas
• rating: 99.7%
• # reviews: 8413

offer pistonrinro:

• availability: In Stock
• options: Ship-to-home
• started: April 22, 2026
• sold: 0
• quantity: 1

returns pistonrinro:

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

general pistonrinro:

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

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