Quicksilver Knurled Head Bolt Engine Replacement

Description

Product Overview

The Quicksilver Knurled Head Bolt is a precision‑engineered replacement component for Mercury outboard engines ranging from 9.9 to 20 horsepower EFI models. Manufactured to exacting OEM standards, the bolt features a robust steel alloy body with a corrosion‑resistant coating that stands up to the harsh marine environment. Its knurled head design offers superior grip for torque application, reducing the risk of over‑tightening while ensuring a secure, leak‑free connection. Dimensions are compact at 1.38 x 1.25 x 0.25 inches, and the lightweight package (0.04 lb) makes handling effortless. The bolt is part of Quicksilver’s commitment to quality, delivering a product that matches the original equipment in strength, fit, and durability.

Usage

This bolt is intended for installation on Mercury 9.9‑20hp EFI outboard engines, specifically those with serial numbers starting at 0R833820 (model year 2017 and newer). It is ideal for routine maintenance, engine rebuilds, or replacement of a damaged original bolt. Marine technicians, boat owners, and DIY enthusiasts will find the knurled head especially helpful when working in confined engine compartments where traditional tools may slip. The bolt’s corrosion‑resistant finish makes it suitable for both fresh‑water and salt‑water applications, ensuring long‑term reliability in a variety of boating conditions.

Why Choose Us

Quicksilver’s reputation in the marine hardware market is built on rigorous testing and adherence to manufacturer specifications. Each bolt undergoes dimensional verification and tensile strength testing to guarantee a perfect match with Mercury’s original design. The knurled head is machined to provide consistent torque distribution, minimizing the chance of thread stripping. Additionally, the bolt’s protective coating is formulated to resist galvanic corrosion, a common issue in marine settings. By choosing this Quicksilver bolt, customers receive a product that not only restores original performance but also extends the service life of their engine.

Key Features

• OEM‑grade steel with marine‑grade corrosion‑resistant coating
• Knurled head for enhanced grip and precise torque control
• Exact fit for Mercury 9.9‑20hp EFI models (serial 0R833820+)
• Lightweight design for easy handling during installation
• Meets or exceeds original equipment specifications for strength and durability

FAQ

Will this bolt fit older Mercury outboards?

The bolt is engineered for Mercury 9.9‑20hp EFI engines with serial numbers 0R833820 and newer. For older models, verify the thread size and head design against the original part number before purchasing.

Do I need any special tools to install the knurled head bolt?

A standard 10 mm socket or wrench will engage the knurled head comfortably. The knurling provides extra grip, so a regular torque wrench is sufficient to achieve the manufacturer‑specified torque value.

Is the corrosion‑resistant coating safe for use in saltwater?

Yes, the coating is specifically formulated to resist galvanic corrosion in both fresh and saltwater environments, ensuring long‑term durability.

Can I use this bolt for a replacement on a MerCruiser sterndrive?

The bolt is compatible with MerCruiser sterndrives that share the same engine specifications as the listed Mercury EFI models. Always cross‑reference the part number with your service manual.

What is the warranty on this product?

Quicksilver offers a one‑year limited warranty covering manufacturing defects. The warranty does not cover damage caused by improper installation or misuse.