Frequently bought together
Description
Once you have filled the holes and seams in the firewall of a 1947–1954 Chevy or GMC pickup, the factory inner fender fillers no longer suit the work, and leaving that area open leaves it exposed. These extensions close the gap without drilling holes in fresh paint.
Features
- Laser cut and pre-formed from 18 gauge steel.
- Bolts in with hidden supplied hardware.
- Fully adjustable to fit your particular truck.
- Can be painted or coated any color you want.
- Sold in pairs.
Truck compatibility and specs
Fits these trucks
1947–1954
Not sure this is the right part for your truck? Send us your year, make and model and we will confirm the fit before you order. Not sure what year your truck is? Decode its VIN.
Specifications
- Part number
- 4754FWE
- Brand
- LS Fabrication
- Material
- Aluminum Sheet Metal
- Interior / Exterior
- Exterior
- Weight
- 0.2 kg
Installation
The extensions bolt in with hidden supplied hardware, so you do not have to drill into a painted firewall.
They are fully adjustable, which lets you dial in the fit on your own truck. The panels are made to be installed by the do-it-yourselfer.
Reviews
Customer reviews
What owners are saying
7

Common questions
Does the panel arrive finished, or does it need work?
It arrives laser cut and formed in raw steel, ready to be fitted. Plan on final trimming to your own truck, then prep and paint - the parts are shipped bare on purpose so you are not stripping a finish off before you weld.
Can I bolt it in instead of welding?
On most panels, yes. Several carry laser etched markings to drill from if you would rather bolt them, and customers have welded, screwed, riveted and bonded them in. Check the Features list on this page for what this particular panel is set up for.
How much trimming should I expect?
Usually a few minutes with a cut-off wheel. Fifty years of body work, previous repairs and factory tolerance mean no two cabs or beds are identical, so the panels are cut slightly generous rather than short. Test fit before any final welding.
How do I know it fits my truck?
This part is listed for 1947–1954 Chevy and GMC 3100, 3600, 3800 and Suburban. The full year, make and model list is in the Truck Compatibility tab on this page. If your truck has been modified, or you are between two of the year ranges we list, send us the year, make and model and we will confirm the fit before you order rather than after.
How long before it ships?
It is a stock item and leaves our warehouse in 1-3 business days. Transit after that is typically 2-5 business days in the United States. Larger orders can arrive in more than one box on different days.
What if it is not right for the truck?
You have 30 days from delivery to return it by mail. Return shipping is on you, and the part needs to come back uninstalled and unmodified - once a panel has been trimmed or welded it cannot go back. Made-to-order items are final sale. The full terms are on our returns page.
Still not sure? Contact us before you order.























Thanks for the reviews and support William!
Very nice, good quality product
Nicely made part for what it is. Fast shipping.
Perfect fit