Dorman 42171 Headlamp Adjusting Screw Socket 1/4 Inch Alloy Steel

Description

Product Overview

The Dorman 42171 headlamp adjusting screw is engineered for precise headlight alignment on a wide range of vehicles. Crafted from high‑grade alloy steel with a machined exterior finish, each screw features a fully threaded 1/4‑inch socket head and right‑hand thread style. Rated for a maximum shear strength of 600 MPa and sealed for waterproof performance, the two‑piece kit ensures durability and reliable operation in harsh automotive conditions.

Usage

Designed for both DIY enthusiasts and professional technicians, this screw replaces factory‑original adjusting screws that have become worn or broken. Ideal for routine headlight maintenance, it fits vehicles that use a 0.25‑inch groove diameter and requires no additional modifications. Whether you are restoring a classic car or servicing a modern sedan, the Dorman 42171 delivers a seamless fit and restores accurate beam direction.

Why Choose Us

Dorman brings over a century of automotive expertise, guaranteeing that each component meets rigorous quality standards. Our screws undergo strict testing for strength, corrosion resistance, and dimensional accuracy, providing confidence that the part will perform as intended. Backed by a dedicated U.S. support team, we offer hassle‑free assistance and a commitment to customer satisfaction that sets us apart from generic aftermarket options.

Key Features

• Premium alloy steel construction ensures long‑lasting strength and corrosion resistance.
• Fully threaded 1/4‑inch socket head provides easy installation with standard tools.
• Waterproof design protects the screw from moisture and road grime.
• 600 MPa shear rating delivers reliable performance under high stress.
• U.S. based technical support and warranty for peace of mind.

FAQ

Will this screw fit my vehicle?

It matches the OEM specifications for vehicles that use a 0.25‑inch groove diameter and a right‑hand 1/4‑inch socket head. Verify your make, model, and trim in the garage tool to confirm compatibility.

Do I need any special tools to install?

No special tools are required; a standard 1/4‑inch socket or ratchet will install the screw quickly and securely.

Is the screw resistant to rust?

Yes, the machined alloy steel finish is treated for corrosion resistance, and the waterproof seal adds extra protection against rust.

Can I paint the screw to match my vehicle?

The screw is supplied in a ready‑to‑paint finish, allowing you to match it to your vehicle’s color if desired.

What is the warranty period?

Dorman offers a limited warranty that covers manufacturing defects for a period of one year from the date of purchase.