Why Upgrade Your Diagnostic Plug Cover?
Factory diagnostic ports can:
- Look unfinished or out of place
- Collect dust and debris over time
- Stand out against a clean interior build
This upgrade cleans up your dash instantly.
With a chrome-plated finish and crystal accent, this diagnostic plug cover adds a polished look while helping protect your port.
Perfect For:
- Peterbilt interior upgrades
- Show trucks and custom builds
- Matching chrome and crystal accessories
- Keeping your diagnostic port clean and protected
Crystal Accent Design (Custom Interior Detail)
Designed to stand out:
- High-quality European-style crystal center
- Available in multiple color options:
- Blue
- Clear
- Green
- Red
- Adds a premium, custom touch to your dash
Perfect for tying together a full interior theme.
Triple Chrome Plated Finish (Clean & Reflective)
Built for a high-end appearance:
- Triple chrome plating process
- Bright, mirror-like finish
- Matches other chrome interior accessories
Delivers a consistent, polished look across your cab.
Protective Plug Design (Functional Upgrade)
More than just looks:
- Covers exposed diagnostic port
- Helps reduce dust and debris buildup
- Keeps your interior looking clean and finished
Simple upgrade with real function.
Durable Injection Molded Construction
Built for everyday use:
- High-quality injection molded plastic
- Lightweight and durable
- Designed for long-term interior use
Maintains fit and finish over time.
Easy Installation (Plug-In Fit)
Quick and simple install:
- Designed to fit directly into factory diagnostic port
- No tools required
- Installs in seconds
⚠️ Fitment may vary depending on port style and configuration.
Vehicle Fitment
Compatible with a wide range of Peterbilt models, including:
- 379, 389, 388, 387, 386, 384 (2006+)
- 210, 220
- 281, 288, 289
- 320, 325, 330, 335, 337, 340
- 341, 345, 348, 351, 353
- 357, 358, 359
- 362, 365, 367, 370, 372
- 375, 377, 378, 379, 379X
- 382, 384, 385, 386, 387, 388
- 389
- 520, 535, 536, 548
- 567, 579, 587, 589
⚠️ Fitment may vary depending on diagnostic port configuration—verify before purchase.
What’s Included
- Diagnostic Plug Cover (Color selected)
Warranty Coverage
- 6-Month Limited Warranty
Frequently Asked Questions
What does this plug cover do?
It covers your truck’s diagnostic port to improve appearance and help keep out dust and debris.
Is this just for looks or functional too?
Both. It enhances your interior while also protecting the diagnostic port.
Will this fit my Peterbilt truck?
It fits many 2006+ Peterbilt models, but fitment may vary depending on your specific port configuration.
Do I need tools to install this?
No. It installs by simply plugging into the diagnostic port.
Will it match my other chrome accessories?
Yes. The triple chrome plated finish is designed to match most chrome interior parts.
Can I choose different crystal colors?
Yes. Multiple color options are available so you can match your interior theme.
