Pricing
Have Questions?
Call 812-523-2228 (Mon–Fri 8AM–5PM EST) and we'll help you confirm fitment before you order.
Check out our Bad Ass FAQ for more answers.
Peterbilt 379 Short Sidewall Composite Front Fender Set – 3.5" Sidewall, 91" or 99" Length
Upgrade your Peterbilt 379 with a clean 3.5" sidewall stance and durability that outlasts standard fiberglass. Built for bold style and serious performance, these fenders deliver the aggressive profile you want with the strength you need.
✔ ArmorCore Advantage™ Lifetime Warranty Against Spider Cracks
✔ Precision Fit – Peterbilt 379 (91" or 99")
✔ Double-Lined Composite Construction
✔ Made in the USA – Seymour, Indiana
Our double-lined composite fiberglass construction adds rigidity and impact resistance where it matters. The integrated mud flap bracket ensures secure mounting, and our exclusive ArmorCore Advantage™ liner system protects against star and spider cracking — for life.
Available in 91-inch or 99-inch lengths, these fenders are lightweight but structurally reinforced for real-world fitment and long-term durability. If you're building a truck to keep, this is the fender set that holds up.
Finished in a smooth, paintable gel coat, ready to customize to match your build.
Sold as a pair (2 fenders)
Important
Fenders come gel-coated and require painting.
Always dry fit before painting — painted fenders are non-returnable.
Photos may show custom-painted customer builds.
Explore our full Peterbilt Fender Collection for additional sizes and styles.
*Free shipping to lower 48 only.
Shipping & Lead Time
- FREE Freight to a Commercial Address (lower 48)
- Shipping to a home? Add Residential Delivery (+$99).
- In stock: ships within 48 hours. Made to order: 1–2 weeks.
- Alaska, Hawaii & international: contact us for a quote.
Questions? Call (812) 523-2228 · Bad Ass Custom Truck Parts, Seymour, IN
Specifications
| Technical Specifications | |
| Single Fender Weight | 38 |
| Fender Set Weight | 76 |
| Material | 1/4" Fiberglass |
| Coating | Marine Grade Gray Gel Coat - Paint Ready |
| Liner | ArmorCore Advantage™ Liner - Lifetime Warranty Against Spider Cracks |
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Every semi truck fender we build is made in the USA and backed by a lifetime warranty—so you get parts that don't just look tough, they perform. When you run Bad Ass fiberglass fenders, your truck is ready for whatever the road throws at it.



















