Peterbilt 567/579 Engine & Performance Parts

Frequently Asked Questions About Peterbilt 567/579 Engine & Performance Parts

Will these engine and performance parts fit my specific Peterbilt 567 or 579?

Fitment can vary by model year, cab configuration, and engine option (such as PACCAR MX-13, Cummins X15, or other available engines). Before ordering, check the product listing for specific year and engine compatibility notes, and have your VIN or engine serial number handy so you can confirm fitment with our team if you are unsure.

What types of components are included in this category?

This category covers a range of engine and performance-related parts for the 567 and 579, including items like air intake components, charge air cooler hardware, exhaust and aftertreatment parts, engine brackets and mounts, cooling system components, and other hardware that supports engine performance and reliability. Not every part applies to every engine configuration, so review each listing carefully.

Are these parts OEM, aftermarket, or both?

Our selection includes a mix of OEM Peterbilt parts and quality aftermarket alternatives. Each product listing indicates whether the part is OEM or aftermarket, along with brand information, so you can choose based on your budget and preference for original equipment matching.

Do these parts require professional installation, or can I install them myself?

Installation difficulty depends on the specific part. Some components, like brackets, hoses, or covers, are straightforward for an experienced DIYer with basic tools. Others, particularly parts tied to emissions systems, engine timing, or complex wiring, are best installed or verified by a qualified diesel technician to avoid performance issues or compliance problems.

Will installing aftermarket performance parts affect my emissions compliance or warranty?

Some engine and performance modifications can affect emissions compliance or void portions of your factory warranty, especially parts related to the aftertreatment system, ECU programming, or exhaust. If you are under warranty or operating in a region with strict emissions enforcement, check with your dealer or a qualified technician before installing performance-altering components.