Frequently bought together
Description
Speaker brackets for the back of a 1947–1954 Chevrolet or GMC cab. They are formed and bead rolled to follow the back wall, which is where an Advance Design cab has room for speakers.
Features
- Laser cut from 18 gauge steel.
- Bead rolled or smooth options are available.
- Two speaker size options: 6.5" or 6"x9".
- All required mounting hardware is included.
- Sold as a set of two brackets.
Fitment notes
1947–1948 cabs may require modifications to fit these brackets. They will not work with the factory in-cab gas tank.
See the images for the dimensions of the speaker openings and check them against your speakers. Test fit the speakers in the openings, and the brackets in the truck, before final assembly.
To finish the cab off, see our bead rolled behind the seat panels.
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.
Specifications
- Part number
- 4754SB
- Material
- Aluminum Sheet Metal
- Brand
- LS Fabrication
- Interior / Exterior
- Interior
- Weight
- 4.5 kg
Installation
All required mounting hardware is included, and the brackets are made to be installed by a do-it-yourselfer.
Test fit first. 1947–1948 cabs may need modifications, and the brackets will not work with the factory in-cab gas tank.
Reviews
32 reviews for Speaker Brackets – 47-54 GMC Chevy Truck
Common questions
What speaker sizes do they take?
The brackets are offered in a 6.5" and a 6"x9" opening. The opening dimensions are in the product photos - measure your speakers against them and test fit the speakers in the openings, and the brackets in the truck, before final assembly.
Is the mounting hardware included?
Yes, all the required mounting hardware comes with them, and they are sold as a set of two.
Will they fit a big back window cab?
The 55-59 brackets are currently cut for the small back window cab only; the big window cab is a different shape and we do not have a version for it yet. On 47-54 cabs, 1947-1948 may need modification, and the brackets will not work alongside the factory in-cab gas tank.
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.


























Joe S. (verified owner) –
Excellent product!!! Fit perfectly! Definitely recommend!!!!
Kenneth M. (verified owner) –
Awesome company, great service, great products. Everything we’ve purchased is amazing.
Darren Stianson (verified owner) –
Great product, very friendly staff
Raymond Espinosa (verified owner) –
Michael Karlin (verified owner) –
Completely awesome! Perfect for the application I needed. Worked out perfectly! Thanks
Brian Kerkstra (verified owner) –
Quality product had to modify due to the seat being close but over all will wok great for my application
Marshall Customs (verified owner) –
Dickey Mickler (verified owner) –
Donald Cartier (verified owner) –
Very nice well made pieces for the truck. Looking forward to install them
CHARLES PREJEAN (verified owner) –
Good product! Good quality!
Roy G. (verified owner) –
Donald Mason (verified owner) –
Lawrence (verified owner) –
Really nice pieces, as always.
Javier (verified owner) –
Pedro Aguilar (verified owner) –
Perfect fitment came out nice
David Taylor (verified owner) –
Great product, fit like a glove. Awesome customer service and postage to Australia was very quick.
David G. (verified owner) –
Items came as described. Painted so they don’t rust but will use the upholstery material to match the rest of the truck. Everything I have gotten has been high quality. Great product.
Ronald M. (verified owner) –
Jeffrey Marshall (verified owner) –
Marshall Customs loves all your products. Thx guys 👍
Barry Whalen (verified owner) –
Speaker panel appears to be about an inch short. Can make do.
Anonymous (verified owner) –
HAve yet to install product. Using the speaker brackets for my project truck. it’ll be some time before I even look to install. But they look very well made and just ordered cup holders to accent the look for my 1953 chevy 3100 pickup
Gabriel Guzman (verified owner) –
Steven S. (verified owner) –
Nice addition to the behind the seat panels, easy install and outstanding look.
mike voglio (verified owner) –
Mark F. (verified owner) –
Great product and great transaction. They fit great. Speaker openings are in the middle. I would have preferred them higher but they work great.
David Blanchard (verified owner) –
Great quality, good packaging and answered all my questions before purchasing. I will definitely be watching LS fabrications website for new creations.
Jere Nash (verified owner) –
Albert A. (verified owner) –
Very good quality
Augustus (verified owner) –
The speaker brackets are awesome and look great! Very clean work. For a company so far from me, I recieved them quick. I will in fact be getting more
Douglas N. (verified owner) –
Awesome quality
Jesse C. (verified owner) –
Perfect Fit
Kevin (verified owner) –
Awesome set of speaker brackets. Well made and looks great powder coated black. Net to put the sound proofing on them before final install. Great Item.