ARP Washer Kits

Applicable for various automotive applications

Part #: 400-8539

Overview

The ARP Washer Kits are high-quality stainless steel washers designed to meet the demanding needs of automotive enthusiasts and professionals. These washers are ideal for use in attaching accessories, chassis components, and other non-critical applications where reliable fastening is essential. Crafted with precision and durability in mind, ARP washers provide a consistent and dependable solution for a variety of repair and modification tasks.

Whether you're working on engine assemblies, suspension upgrades, or custom fabrication, these washers help ensure secure connections and help prevent loosening over time. While they are not suitable for use on cylinder heads, mains, or connecting rods due to their hardness specifications, they excel in supporting your vehicle's non-structural components with a corrosion-resistant stainless steel construction.

Key Features

ARP Washer Kits are engineered with attention to detail and quality, offering several benefits for your automotive projects:

• Manufactured from high-grade stainless steel, providing excellent corrosion resistance and longevity in harsh environments.
• Precisely machined to exact dimensions, ensuring a perfect fit for a variety of applications.
• Designed with a washer outside diameter of approximately 0.813 inches (20.65 mm) and an inside diameter of 0.438 inches (11.125 mm), suitable for many standard fasteners.
• Thickness of 0.120 inches (3.048 mm) provides adequate load distribution without excessive space.
• Ideal for attaching accessories, mounting brackets, and chassis components securely.
• Suitable for use in street, off-road, and performance applications where corrosion resistance and durability are critical.
• Manufactured by ARP, a trusted name in high-performance fasteners and hardware for automotive applications.

Construction & Design

The ARP Washer Kits are constructed from premium stainless steel, ensuring resistance to rust and corrosion even in demanding environments. The washers feature a flat, smooth surface with precise machining to ensure proper seating and load distribution. Their robust design helps prevent loosening caused by vibrations and thermal cycling, making them a reliable choice for both daily drivers and performance builds.

Performance & Use

While these washers are not designed for critical engine components such as cylinder heads or connecting rods, they excel in supporting non-structural parts that require secure fastening. Their corrosion-resistant material and precise dimensions help maintain tight, reliable connections over time, contributing to the overall integrity of your vehicle's assembly.

Installation & Fitment

Installing the ARP Washer Kits is straightforward and requires no special tools beyond standard hand tools. Simply select the appropriate size for your application, place the washer between the fastener and the component, and tighten to the manufacturer’s torque specifications. These washers are compatible with a wide range of fasteners and are designed to fit standard bolt sizes.

No cutting, drilling, or special modifications are necessary when used in suitable applications. Always verify the dimensions and compatibility before installation to ensure optimal performance and safety.

What's Included

• Stainless steel washer kit with multiple washers as specified
• Complete hardware for secure fastening
• Instruction sheet (if applicable)

Ideal For

• Attaching accessories and brackets
• Chassis component mounting
• General automotive hardware applications
• Enthusiasts seeking corrosion-resistant fasteners for daily or performance use

Emissions Note

This product is designed for use in non-emission-critical applications and does not affect vehicle emissions compliance. It is intended for off-road, racing, or replacement purposes only and may not be legal for use on public roads in certain jurisdictions. Please verify local regulations before installation.