ARP 12pt Timing Cover & Water Pump Bolt Kit

Buick 350 Engines (1986–1988)

Part #: 420-3201

Overview

The ARP 12pt Timing Cover & Water Pump Bolt Kit is a high-performance fastener solution designed specifically for Buick 350 CID engines. Whether you're restoring a classic muscle car, building a high-performance street machine, or performing routine maintenance, these bolts provide the strength and durability needed to ensure reliable operation under demanding conditions. Engineered with precision and built to last, this kit helps secure critical engine components with confidence.

Designed for enthusiasts who demand the best, this bolt kit offers a significant upgrade over stock hardware. Its superior tensile strength and corrosion resistance make it ideal for both daily drivers and high-performance applications. With ARP's reputation for quality and innovation, you can trust these bolts to maintain proper timing cover and water pump mounting, preventing leaks and ensuring optimal engine performance.

Key Features

ARP's Timing Cover & Water Pump Bolt Kit features advanced materials and construction techniques to deliver unmatched strength and longevity. The bolts are manufactured from premium-grade steel, offering tensile strengths of up to 180,000 psi—substantially higher than standard grade 8 hardware. This ensures that your engine components stay securely fastened even under high heat, vibration, and stress.

• Available in BlackOxide hex or 12 point configurations for versatile installation options.
• Stainless steel variants provide rust-free performance, ideal for vehicles exposed to moisture or harsh environments.
• Precision-machined threads and heads ensure a perfect fit and easy installation.
• Designed to withstand the rigors of high-performance and racing applications.
• Engineered with ARP's proprietary manufacturing process for consistent quality and strength.
• Corrosion-resistant coatings extend the service life of the fasteners, maintaining their integrity over time.
• Optimized thread design reduces installation torque and minimizes thread damage.
• Compatible with OEM and aftermarket timing covers and water pumps for a wide range of Buick 350 builds.

Construction & Design

This bolt kit is crafted from high-grade alloy steel, heat-treated to achieve maximum tensile strength and durability. The bolts feature a 12-point head design, allowing for increased torque application and easier access in tight engine compartments. The BlackOxide finish provides a sleek, corrosion-resistant surface, while the stainless steel options offer rust-free performance for long-term reliability. Each bolt is precision-machined to exact specifications, ensuring a perfect fit and secure fastening of your timing cover and water pump components.

Installation & Fitment

This bolt kit is designed for straightforward, bolt-on installation. It uses the factory mounting points on Buick 350 engines from 1986 to 1988, with no modifications required. The bolts are compatible with OEM and aftermarket timing covers and water pumps, making them a versatile upgrade for restoration or performance builds. Always ensure proper torque specifications are followed during installation to prevent over-tightening or damage. The kit includes all necessary fasteners for a complete upgrade.

• Easy to install with standard hand tools.
• No cutting, drilling, or special modifications needed.
• Ideal for engine rebuilds, restorations, or performance upgrades.

What's Included

• Complete set of timing cover bolts
• Water pump mounting bolts
• All necessary hardware for a secure fit

Ideal For

• Restoration projects on Buick 350 engines from 1986 to 1988
• High-performance street builds and racing applications
• Engine rebuilds requiring stronger, more reliable fasteners
• Enthusiasts seeking corrosion-resistant hardware for longevity