Frequently bought together
Description
Our transmission tunnel is formed and assembled to bolt into the original transmission cover location on a 1947–1954 Chevy or GMC truck. It is an easy way to give the middle of the cab a custom look.
Features
- Laser cut from 18 gauge steel.
- Formed and assembled to bolt directly into the original transmission cover location.
- Two pieces, supplied bolted together with rivet nuts and stainless steel machine screws.
- Made to be installed by the do-it-yourselfer.
Tunnel height and width
- Very front: 3.0" high, 13.5" wide
- Front bolt holes: 2.5" high, 12" wide
- Middle bolt holes: 1.5" high, 7.25" wide
- Rear bolt holes: 0.5" high, 2.25" wide
Fitment notes
See the third photo in the gallery for the dimensions of the cover and verify it will work for your application. Cutting the factory toe boards is required, and the upper section will need to be welded to the toe boards.
If you are working on the cab or engine bay of a 3100 Advance Design truck, our behind the seat panels pair well with the tunnel.
Not included
- Paint or coating - the tunnel ships in bare 18 gauge steel, supplied in two pieces bolted together with rivet nuts and stainless machine screws.
- Replacement toe boards. Cutting the factory toe boards is required and the upper section of the tunnel welds to them, so a welder is needed.
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
- 4754BITC
- Material
- Aluminum Sheet Metal
- Brand
- LS Fabrication
- Interior / Exterior
- Interior
- Weight
- 5.5 kg
Fits alongside
Most often bought with this part:
Installation
The tunnel arrives as two pieces already bolted together with rivet nuts and stainless steel machine screws, and it bolts into the original transmission cover location.
It is not a no-cut job. Cutting the factory toe boards is required, and the upper section will need to be welded to the toe boards. Check the dimensions against your truck before you start.
Reviews
Customer reviews
What owners are saying
18
Transmission Tunnel - 47-54 GMC Chevy Truck
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 part 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.
Great service extremely happy and fast service thank you .
Quality sheet metal construction, have not installed yet, very prompt shipping and delivery
Build good and strong
Great fabrication and construction in general. Works perfectly. Worth the money.