Hexagonal Header Bolt ARP Automotive Polished

Description

Product Overview

The ARP 611-1500 hexagonal header bolt set includes five polished steel fasteners engineered for automotive performance exhaust systems. Each bolt features a 1/4‑20 thread, a robust hexagonal head for easy torque application, and a precision‑machined exterior that resists corrosion and heat distortion. Weighing just 2.46 ounces per piece and measuring 3.9 x 5.8 x 0.65 inches, the bolts combine lightweight design with high tensile strength, making them suitable for both daily drivers and race‑ready builds.

Usage

These bolts are ideal for installing or upgrading exhaust headers, manifolds, and high‑flow systems on a wide range of vehicles. Their universal fit accommodates most aftermarket and OEM exhaust components, allowing mechanics and DIY enthusiasts to achieve a secure, leak‑free connection without custom adapters. Whether you are working in a professional shop or a home garage, the polished finish provides clear visual alignment and reduces the risk of cross‑threading during installation.

Why Choose Us

ARP is renowned for its rigorous quality standards and aerospace‑grade manufacturing processes. Each bolt undergoes heat treatment and surface polishing to meet exacting torque specifications, ensuring consistent performance under extreme engine temperatures. Our U.S.‑made fasteners are backed by a comprehensive warranty and have earned a 5‑star rating from verified customers, reflecting reliability and satisfaction.

Key Features

• Polished steel finish resists corrosion and heat buildup.
• Hexagonal head provides superior torque transfer and grip.
• Standard 1/4‑20 thread offers universal compatibility with most exhaust components.
• Machined exterior ensures precise fit and easy alignment.
• Made in the USA with aerospace‑grade quality control.

FAQ

What vehicles are compatible with these bolts?

The 1/4‑20 thread size is a common standard for many performance exhaust systems, making the bolts suitable for a wide range of domestic and import cars, trucks, and race vehicles.

Do I need a special tool to install them?

A standard 1/2‑inch socket or wrench fits the hexagonal head perfectly, allowing for straightforward installation with typical hand tools.

Are these bolts reusable after removal?

Yes, the polished finish and heat‑treated steel retain their strength after removal, provided they are inspected for damage and re‑torqued to specifications.

What warranty does ARP provide?

ARP offers a limited lifetime warranty against manufacturing defects, ensuring long‑term confidence in the fasteners’ performance.

Can these bolts be used in high‑heat applications?

Absolutely. The steel alloy and polishing process are designed to withstand the elevated temperatures typical of high‑performance exhaust systems.