Install Double Hump Fenders on Peterbilt 379 Trucks for Custom Style

Customizing the Iconic Peterbilt 379

The Peterbilt 379 is an iconic Class 8 tractor known for its distinctive sloped hood and durable reliability. Truck enthusiasts love to customize their 379s to stand out on the road with unique style and flair. One popular customization is installing double hump fenders on the back.

What are Double Hump Fenders?

Double hump fenders feature two humps that protrude higher than standard fenders. The double humps allow for bigger tires and provide added style. They evolved from the single hump fenders Peterbilt introduced in the late 1980s.

Today, the double hump style endures as a classic custom look. The twin humps give more clearance for larger tires, protect the deck and body from debris, and accentuate the truck's imposing silhouette.

Installing Double Hump Fenders on a 379

Adding double hump Peterbilt fenders requires metal fabrication skill to graft the humps onto the standard fenders. Here is an overview of the process:

• Lift the truck bed to access the chassis frame and rear fenders
• Remove lighting fixtures from the original fenders
• Cut away the inner and outer sections of the stock fenders
• Fabricate new inner and outer fender pieces with custom double humps
• Weld the new pieces back onto the truck's frame
• Reinstall lighting and other accessories onto new fender structure
• Extend brake and electrical lines to accommodate raised fender height

Crafting double hump Peterbilt fenders requires specialized metalworking equipment and skills. Most 379 owners choose to have the work done professionally by a truck customization shop.

Complementary 379 Customizations

Double hump fenders pair well with other common Peterbilt 379 modifications like:

• Frame stretches - Extending the frame and chassis length allows more cargo capacity
• Raised roofs - Gaining interior headroom and changing the truck's silhouette
• Custom paint jobs - Unique paint schemes and polished aluminum or chrome
• Upgraded wheels and tires - Flashy rims with wide profile rubber stand out
• Suspension lifts - Boost ground clearance for off-road adventures
• Train horns - Draw attention with deep loud horns
• Auxiliary lighting - Enhance visibility and style with extra LED lights

Benefits of Double Hump Fenders

Why do so many Peterbilt 379 owners and drivers invest in installing double hump fenders?

• Eye-catching style - The iconic double hump look turns heads on the highway
• Improved tire coverage - Protects the deck and prevents debris kicking up
• Room for larger tires - Allows fitting wider rims and taller tire sidewalls
• Greater clearance - Raises everything up away from the road surface
• Customization pride - Puts your personal stamp on a legendary truck

Although double hump Peterbilt fenders don't directly improve performance or productivity, the style and added clearance give 379 owners more flexibility for the work and play they expect from these highly customizable trucks.

Some drivers see the extra clearance as an opportunity to take their truck mildly off-road while others just love the appearance of the iconic doubled-up fender humps rolling down the highway. Either way, this customization option will continue turning heads wherever Peterbilt 379 haulers roam.

Peterbilt Double Hump Fenders: FAQs

Here are answers to some frequently asked questions about adding double hump fenders to Peterbilt 379 trucks:

How much does it cost to install double hump fenders?

You can expect to pay $3,000 to $5,000 for parts and professional custom labor to convert standard rear fenders into double hump fenders.

Can I install them myself?

Installing double hump fenders requires intermediate welding and fabrication skills and equipment. Most owners opt to have them professionally installed by a truck modification shop.

What size tires will they accommodate?

Double hump fenders allow installing 24.5-inch rims with tires up to 11R24.5 size, giving about 5 inches extra clearance.

Does it compromise the structure or safety?

Properly constructed double hump fenders are very solid. The installation shop will ensure safety compliance and chassis structural integrity is maintained.

Will it void my truck warranty?

Aftermarket modifications like double hump fenders typically do not void standard warranties but confirm first with your dealer.

FAQs

Can I get chrome or color matched double hump fenders?

Yes, you can request custom powder coated or chrome double hump fenders. Expect to pay more for these upgrade treatments compared to raw steel fenders.

Will double hump fenders work with a deck plate combo kit?

Double hump fenders are fully compatible with deck plates. The raised fender clearance leaves plenty of room for accessories like inverted boxes for storage.

Can I install mud flaps with my double humps?

Mud flaps may still be used with double hump fenders. Choose angled mud flaps or have flaps custom fabricated to match the hump contours.

What maintenance do they require?

Ensure lighting wiring and any brake airline extensions are well secured. Periodically inspect fender welds for cracking. Touch up paint chips to prevent rust.