ARP 300-6603 Connecting Rod Bolts Set L19 3/8 X1.600

( Brand: Arp ), ( Manufacturer Part Number: 300-6603 ), ( Type: Connecting Rod ), ( Manufacturer Warranty: 1 Year ), ( Material: Steel ), ( Country Of Origin: United States ), ( Performance Part: Yes )

Review ARP L19 Connecting Rod Bolts 3/8 Inch Set Of Pieces fits X1 600 2016

ARP 300-6603 L19 Connecting Rod Bolts - 3/8 x 1.600 Set of 16

The ARP 300-6603 L19 Connecting Rod Bolts are a remarkable addition to any engine build or performance upgrade project, particularly for high-performance applications. This set of 16 bolts boasts a robust 3/8 inch diameter and a thread pitch of 1.600 for a secure and reliable fit.

Manufactured by ARP, a renowned name in the automotive industry, these bolts are designed to withstand the extreme conditions and stress that high-performance engines can subject them to. The L19 designation refers to the length of the bolt, ensuring a perfect fit for your connecting rods.

These bolts are made from high-quality 8740 chrome moly vanadium steel, a material known for its exceptional strength and fatigue resistance. The bolts are then heat-treated and precision-machined to ensure a perfect fit and maximum durability.

Each bolt features a 12-point, 120-degree turn-down head, providing excellent accessibility during installation and ensuring a consistent torque value. The head design also allows for the use of ARP's unique patented aluminum head bolts with locking washers, further enhancing the reliability and performance of these bolts.

The ARP 300-6603 L19 Connecting Rod Bolts come with a corrosion-resistant, high-temperature black oxide finish, ensuring they look as good as they perform. They are manufactured in the USA to the highest standards, ensuring you receive a product of unparalleled quality and reliability.

In summary, the ARP 300-6603 L19 Connecting Rod Bolts are a superior choice for any high-performance engine build or upgrade. Their robust construction, high-quality materials, and precision engineering make them an essential tool for any serious engine builder or performance enthusiast.

Pros, Cons, and Recommendation for ARP 300-6603 L19 Connecting Rod Bolts (3/8 x1.600 set of 16)

1. High Quality: ARP (Automotive Racing Products) is a well-known brand in the automotive industry, particularly for high-performance parts. These connecting rod bolts are manufactured with precision and are designed to withstand extreme conditions, ensuring durability and reliability.

2. Enhanced Performance: The ARP 300-6603 L19 bolts are known for their ability to handle high horsepower and torque, making them suitable for performance applications.

3. Compatibility: These bolts are designed to fit most applications where a 3/8 x1.600 connecting rod bolt is required, making them versatile and widely applicable.

4. Includes 16 Bolts: The set includes 16 bolts, which is more than enough for most applications, reducing the need for additional purchases.

1. Price: ARP products are generally more expensive than OEM (Original Equipment Manufacturer) parts. These connecting rod bolts may be priced higher than some alternatives, which could be a deterrent for budget-conscious buyers.

2. Overkill for Standard Applications: If you're not using these bolts in a high-performance application, their enhanced capabilities may be unnecessary, leading to unnecessary expense.

3. Availability: While ARP products are widely available at auto parts stores and online, they may not be as readily available as OEM parts, which could potentially cause delays in your project.

The ARP 300-6603 L19 connecting rod bolts offer high quality, enhanced performance, and compatibility with a wide range of applications. However, their high price and potential overkill for standard applications are factors to consider. If you're working on a high-performance project and prioritize durability and reliability, these bolts are a good investment. If you're on a tight budget or working on a standard application, you may want to consider less expensive alternatives.

If you're working on a high-performance project and can afford the premium price, the ARP 300-6603 L19 connecting rod bolts are a solid choice. If you're working on a standard application or have a tighter budget, consider researching alternative brands that offer comparable performance at a lower price point.

Details:

ARP PRO RACING ARPL19 CONNECTING ROD CAP SCREWS. Return Police. 3/8 x 1.600 L A set of 16. ARP pro racing connecting rod ARPL19 bolts are made from AISI L19 high quality tool steel.

All cap screw has 12 point head to fit 7/16 socket wrench for even distributing of bolt torque. Crankshaft Depot - Go Racing, Pay less.

part #: 3006603 prices

• $23.66-$80.22

specifications pistonrinro:

• for models: X1, 600
• for years: 2016
• brand: Arp
• mpn: 300-6603
• type: Connecting Rod
• manufacturer warranty: 1 Year
• material: Steel
• country of origin: United States
• performance part: Yes

general pistonrinro:

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

payments pistonrinro:

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

returns pistonrinro:

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

offer pistonrinro:

• sold: 0
• availability: In Stock
• started: November 29, 2025
• options: Ship-to-home

seller pistonrinro:

• city: Chino, California
• # reviews: 13682
• rating: 100.0%

shipping pistonrinro:

• type: Fixed
• class: Standard, Expedited
• service: USPS First Class, USPS Priority Mail
• cost: $12.00
• transit: 4-10 Days
• carrier: USPS

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