Engine Intake Manifold Expansion Plug Dorman

Description

Product Overview

The Dorman Engine Intake Manifold Expansion Plug is engineered to match the exact fit and function of the original equipment part for a wide range of vehicle applications. Constructed from high‑grade rubber, the plug offers excellent resistance to heat, oil, and vibration, ensuring a seal that endures the demanding environment of an engine bay. With dimensions of 3.63 x 2.38 x 2.19 inches and a weight of just 6.4 ounces, it is compact yet robust, featuring a machined exterior that promotes a secure, leak‑free connection. The part carries the OEM reference EZ‑87 and the Dorman model number 570‑004, guaranteeing compatibility with the specified makes and models.

Usage

This expansion plug is intended for installation in the intake manifold of gasoline engines where the original plug is missing, cracked, or has suffered fatigue. It is ideal for routine maintenance, engine rebuilds, or performance upgrades where maintaining proper air‑fuel mixture is critical. Whether you are a DIY enthusiast working in a home garage or a professional mechanic servicing a fleet, the plug’s direct‑fit design simplifies installation and reduces downtime.

Why Choose Us

Dorman brings over a century of automotive expertise to every component it manufactures. This expansion plug benefits from rigorous testing and quality control processes performed by product experts in the United States. The rubber material is selected for its durability and resistance to the thermal cycles typical of engine operation, while the machined exterior ensures a precise fit that mirrors the factory part. Backed by a strong reputation and a high customer rating of 4.7 out of 5 stars, this plug offers confidence and peace of mind for both professionals and hobbyists.

Key Features

• Direct OEM replacement – matches EZ‑87 specifications for a seamless fit.
• Durable rubber construction – resists heat, oil, and vibration for long‑term reliability.
• Machined exterior – provides a secure seal and prevents air leaks.
• Lightweight design – easy to handle and install without additional tools.
• Backed by Dorman’s century‑long automotive experience and U.S. quality assurance.

FAQ

Is this plug compatible with my vehicle?

Yes, the plug is designed to replace the OEM EZ‑87 part. To confirm fit, enter your vehicle’s make, model, and engine details into Dorman’s garage tool before purchase.

Can I install the plug myself?

Absolutely. The plug features a direct‑fit design that requires only basic hand tools. Ensure the intake surface is clean, align the plug, and press it into place until it seats securely.

What material is used and why is it beneficial?

The plug is made from high‑quality rubber, chosen for its ability to withstand the high temperatures and chemical exposure found in engine compartments while maintaining flexibility for a tight seal.

How does this plug affect engine performance?

By restoring the proper airflow path in the intake manifold, the plug helps maintain the correct air‑fuel mixture, which can improve combustion efficiency and prevent rough idling or loss of power caused by leaks.

What warranty does Dorman provide?

Dorman offers a limited warranty that covers defects in material and workmanship, reflecting the confidence they have in the durability and performance of this expansion plug.