2020-2027 GMC Sierra HD Duramax Fender Insert Overlays (Pair)

Let’s be honest — the faded, washed-out factory Duramax fender inserts don’t do your Sierra HD justice. You’ve got 6.6L of turbo diesel muscle under the hood, and the badge announcing it shouldn’t look like an afterthought.

These gloss black Sierra HD Duramax fender insert overlays give your 2020-2027 Sierra 2500HD or 3500HD the clean, blacked-out look the truck deserves. Meanwhile, the iconic Duramax / Allison / 6.6L Turbo Diesel branding stays front and center in crisp, polished detail.

Like everything we build at Venom Trucks, these started because we wanted them on our own trucks first. No cheap vinyl decals, no flimsy stick-ons that peel at the edges after one Alabama summer. These are precision-cut from 1/8″ PMMA — the same UV-resistant acrylic used in automotive lighting lenses — so they won’t fade, yellow, or warp in the sun year after year.

Why Upgrade Your Sierra HD Duramax Fender Inserts?

GM’s factory inserts look great on day one, but sun and daily driving are brutal on them. The bright trim dulls, the finish clouds over, and before long the fender on your truck looks tired.

A Sierra HD Duramax fender insert overlay covers the worn factory piece with a rigid, automotive-grade panel that matches the original contours exactly. So you get the blacked-out look without replacing the entire insert or paying dealership prices.

Sierra HD Duramax Fender Insert Overlay Features

• True overlay design — installs directly over your existing factory insert. No removal, no drilling, no modifications to your truck.
• 1/8″ UV-resistant PMMA construction — rigid, automotive-grade acrylic that holds its gloss and detail. This is a real part, not a sticker.
• 3M VHB tape pre-applied — clean your factory insert, peel the backing, press it on. That’s the whole install. Done in minutes with no tools.
• Perfect OEM fitment — designed specifically for the 2020-2027 Sierra HD fender insert, so every line and contour matches like it came from the factory.
• Gloss black finish — pairs perfectly with blacked-out grilles, emblem overlays, and smoked lighting.
• Sold as a pair — one for each side, driver and passenger.

Installation

Installing these fender insert overlays takes about five minutes per side. Wipe down the factory insert with rubbing alcohol, peel the 3M backing, line up the overlay, and press firmly. The VHB tape creates a strong, weatherproof bond that stands up to pressure washing, car washes, and highway miles.

Fitment

2020, 2021, 2022, 2023, 2024, 2025, 2026, 2027 GMC Sierra 2500HD & 3500HD — all trims with factory Duramax fender inserts. Not sure if these fit your truck? Message us with your year and trim and we’ll confirm before you order.

Pair your Sierra HD Duramax fender insert overlays with our illuminated fender badges and grille emblem inlays for a complete exterior refresh — built by enthusiasts, for enthusiasts.