Chrome Plastic DEF Filler Trim for 2012–2021 Peterbilt 579

Upgrade the DEF area of your Peterbilt 579 with this chrome plastic DEF filler trim designed for trucks with side fairings. Featuring a high-quality chrome-plated finish and direct replacement fitment, it delivers a clean, factory-style exterior enhancement.

A Clean Chrome Accent for the DEF Filler Area

On aerodynamic trucks like the Peterbilt 579, even small trim pieces stand out. This chrome DEF filler trim replaces the original factory piece with a bright, polished upgrade that complements stainless steps, tanks, and fairing accents.

Designed specifically for 2012–2021 Peterbilt 579 models with side fairings, it installs cleanly without modification.

Durable Construction with OEM-Style Fit

Chrome-Plated Injection Molded Plastic

Manufactured from high-quality injection-molded plastic with a durable chrome-plated finish, offering lightweight strength and long-lasting shine.

Direct Replacement Design

Engineered to install directly in place of the original DEF filler trim, ensuring proper alignment and factory-style fitment.

Pre-Installed Mounting Clips

Comes with pre-installed mounting clips for fast, secure installation without drilling or additional hardware.

Designed Specifically for Peterbilt 579 with Side Fairings

This trim piece is intended for:

• 2012–2021 Peterbilt 579

• Trucks equipped with side fairings

It provides a seamless upgrade that enhances the DEF access area without affecting function.

Fitment, Installation & Technical Notes

Installation Overview

• Remove original DEF filler trim

• Snap chrome trim into place using pre-installed clips

• No cutting or drilling required

Important Notes

• Designed for trucks with side fairings only

• Verify model year and configuration before ordering

Materials, Durability & Warranty Coverage

Constructed with chrome-plated injection molded plastic and designed for exterior use, this trim is built to withstand road exposure and regular DEF servicing.

Backed by a 6-month warranty covering manufacturing defects.

What’s Included

• 1 × Chrome DEF filler trim for Peterbilt 579

• Pre-installed mounting clips

Frequently Asked Questions About the Chrome DEF Filler Trim for Peterbilt 579

What trucks does this fit?

It fits 2012–2021 Peterbilt 579 trucks with side fairings.

Is this a direct replacement?

Yes. It installs directly in place of the original DEF filler trim.

Does installation require drilling?

No. It uses pre-installed mounting clips for simple snap-in installation.

Is this made from metal?

No. It is made from injection-molded plastic with a chrome-plated finish.

Will this fit trucks without side fairings?

No. It is specifically designed for trucks equipped with side fairings.

What warranty is included?

This product includes a 6-month warranty covering defects in materials and workmanship.