ARP Main Bolt Kits

Multiple Chrysler Fitments 2010–2023

Part #: 140-5002

Overview

The ARP Main Bolt Kits are engineered to provide high-performance, reliable fastening solutions for Chrysler engines across various models and years. Designed specifically for engine rebuilds, performance upgrades, or restoration projects, these bolt kits ensure your engine maintains optimal integrity under demanding conditions. Whether you're building a high-horsepower street machine or restoring a classic Chrysler, ARP's main bolt kits deliver the strength and durability needed for long-lasting performance.

Constructed with precision and quality, these main bolt kits are ideal for automotive enthusiasts and professional rebuilders seeking to enhance engine reliability and strength. By upgrading to ARP's high-performance fasteners, you'll benefit from improved clamping force, reduced risk of bolt failure, and peace of mind during spirited driving or high-stress applications. These bolts are designed to support your engine's power potential while maintaining the integrity of your engine block.

Key Features

ARP's Main Bolt Kits are crafted with advanced manufacturing processes to ensure maximum strength and reliability. The bolts are cold forged, a process that enhances the molecular integrity of the steel, resulting in a product with superior tensile strength and fatigue resistance. Each bolt is heat treated prior to thread rolling and machining, ensuring consistent quality and performance. The high tensile strength of 200,000 psi makes these bolts suitable for high-performance applications where engine stresses are significantly increased.

• Manufactured from high-quality alloy steel for exceptional strength and durability
• Cold forged to improve molecular integrity and overall performance
• Heat treated to achieve a tensile strength of 200,000 psi, supporting high-stress engine rebuilds
• Designed with a 12-point head for easy installation and removal in tight engine bays
• Compatible with a variety of Chrysler engines, including 273, 318, 340, 360, 383, 400, 440, and others
• Engineered for use without windage tray applications, suitable for a range of engine configurations
• Precision thread rolling and machining for consistent fit and reliable clamping force
• Optimized fastener design for enhanced reliability and increased strength over stock bolts
• Part of ARP's High Performance Series, trusted by professionals and enthusiasts worldwide

Construction & Design

The ARP Main Bolt Kits feature a robust design utilizing high-quality alloy steel that is cold forged to ensure the best molecular structure and strength. The bolts undergo a meticulous heat treatment process, which enhances their tensile properties and fatigue life. The 12-point head design allows for easier access in confined spaces, making installation and removal more straightforward. These bolts are precision thread rolled, which improves the surface finish and thread strength, ensuring a secure fit every time.

The fasteners are engineered to withstand the extreme pressures and vibrations typical of high-performance engines. Their superior construction minimizes the risk of bolt stretch or failure, maintaining proper engine sealing and compression. ARP's attention to detail in manufacturing results in a product that not only meets but exceeds OEM standards, providing added confidence during engine assembly or rebuilds.

Performance & Reliability

Designed for demanding engine rebuilds and performance applications, these main bolts help support increased horsepower and torque by providing a secure and consistent clamping force. The high tensile strength ensures that the bolts can handle elevated stress levels without stretching or breaking, which is critical during high-RPM operation or forced induction setups. Using ARP's main bolt kits can contribute to improved engine durability, reduced risk of head gasket failure, and overall peace of mind during intense driving conditions.

Installation & Fitment

The ARP Main Bolt Kits are designed for straightforward installation, utilizing the factory bolt hole locations and specifications. No special tools or modifications are required, making them a direct bolt-on upgrade for your Chrysler engine. Proper torque specifications should be followed during installation to ensure optimal clamping force and engine integrity. Always refer to your engine's service manual for specific tightening sequences and torque values.

• Easy to install with standard hand tools
• No cutting, drilling, or additional modifications needed
• Suitable for use in rebuilds, performance upgrades, or restoration projects

What's Included

• Complete set of main bolts for your specified Chrysler engine application
• High-quality hardware designed for maximum strength and durability
• Comprehensive packaging ensuring protection during shipping and storage

Ideal For

• Engine rebuilds for Chrysler 273-440 engines
• Performance enthusiasts seeking increased reliability and strength
• Restorers restoring classic Chrysler engines to original or upgraded specifications
• Professional engine builders and automotive shops

Emissions Note

This product is designed for off-road, racing, or recreational use only and may not be legal for use on pollution-controlled vehicles in all jurisdictions. Please check local regulations before installation.