Description

ALUMINUM REPLACEMENT BOTTOM STEP & BRACKETS FOR PETERBILT BATTERY BOX OR TOOLBOX

**Installing this part requires cutting the lower section of your box & drilling holes for the new step bracket. If your factory brackets are damaged or broken off, this is a simple, cost-effective, and quality solution.**

  • Kit includes: (1) Aluminum step w/ heavy-duty end plates; (2) custom aluminum mounting brackets; (10) 3/8" stainless steel bolts; (10) nylock nuts; (20) washers
  • Replaces Peterbilt Part # 11-04006-0774 or 11-04006-0775
  • Fits all 579 style battery boxes and/or toolboxes (w/ 30-1/2" step), including 384, 386, 567, 579
  • DOES NOT FIT 335, 367, 385, 378, 379, 388, 389
  • Heavy Duty End Plates - 3/16" 'U' bracket is inserted in each end, then secured with 4 HD rivets. This makes the steps much stronger than the factory steps and other aftermarket-brand steps with thin end plates.
  • Because our steps are bolt-on, they can easily be replaced if damaged again.
  • Made in USA
  • HEAVY-DUTY VERSION --- Includes 3/16" aluminum plate riveted to front edge of step for greater strength. This option (which is also available from the factory) eliminates the steps from cracking and bending in the middle.

Please note the parts in the displayed photos have been lightly polished. All parts sold will have a clean aluminum mill-finish.

Product form

PETERBILT Battery Box Step Replacement Kit 579

$150.00

ALUMINUM REPLACEMENT BOTTOM STEP & BRACKETS FOR PETERBILT BATTERY BOX OR TOOLBOX **Installing this part requires cutting the lower section... Read more Read more

SKU: BBS-LK579

Description

ALUMINUM REPLACEMENT BOTTOM STEP & BRACKETS FOR PETERBILT BATTERY BOX OR TOOLBOX

**Installing this part requires cutting the lower section of your box & drilling holes for the new step bracket. If your factory brackets are damaged or broken off, this is a simple, cost-effective, and quality solution.**

  • Kit includes: (1) Aluminum step w/ heavy-duty end plates; (2) custom aluminum mounting brackets; (10) 3/8" stainless steel bolts; (10) nylock nuts; (20) washers
  • Replaces Peterbilt Part # 11-04006-0774 or 11-04006-0775
  • Fits all 579 style battery boxes and/or toolboxes (w/ 30-1/2" step), including 384, 386, 567, 579
  • DOES NOT FIT 335, 367, 385, 378, 379, 388, 389
  • Heavy Duty End Plates - 3/16" 'U' bracket is inserted in each end, then secured with 4 HD rivets. This makes the steps much stronger than the factory steps and other aftermarket-brand steps with thin end plates.
  • Because our steps are bolt-on, they can easily be replaced if damaged again.
  • Made in USA
  • HEAVY-DUTY VERSION --- Includes 3/16" aluminum plate riveted to front edge of step for greater strength. This option (which is also available from the factory) eliminates the steps from cracking and bending in the middle.

Please note the parts in the displayed photos have been lightly polished. All parts sold will have a clean aluminum mill-finish.

Frequently Asked Questions

Here are the most common questions and answers about our products. Call or text if you have another question not listed here.

What is the difference between standard and heavy duty?

Heavy duty steps are reinforced with a 3/16" thick aluminum plate riveted to the front edge. This makes the steps significantly stronger. We always recommend the heavy duty steps - unless they're for light use, like on the passenger side.

What is the difference between standard and heavy duty?
Is this part in stock? When can you ship it?

Yes, all of our parts are in stock and ship from our Reno, NV shop within 1 to 2 days.

Can I return this if it doesn't fit?

Yes. You are responsible for the cost of return shipping, so read the full description and double check the part numbers, measurements, and photos to ensure you are ordering the correct part.

Do you make the products on your website?

Yes. We make the products we sell - in Reno, NV, with high-quality American-made materials. Even the rivets we use on our steps are made in the USA.

Do you offer express shipping?

Yes, except on a few oversize items. You can select 2-day express shipping at checkout. Keep in mind that does not include our processing time of 1-2 days. So express shipping will take 3+ business days after you order.

Can I call to place an order over the phone?

You can, but honestly, the website is the easiest and fastest way to place your order.

Reviews

What customers think about our products

  • David M Rotterdam

    Reliable, intuitive, and surprisingly affordable. I use Fleetassist for my personal car and it’s been a game changer. Trip overviews are crystal clear and the app works flawlessly.

  • Sophie L Utrecht

    I run a small delivery business and needed a system that’s both tax-compliant and easy to manage. Fleetassist delivers exactly that. The installation was quick, and the live tracking is spot-on.

  • Jamal K Canada

    As a self-employed electrician, I’m on the road a lot. With Fleetassist, I no longer have to think about logging my trips — it’s all done automatically. And the customer support? Top-notch.

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