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Trans-Dapt Performance Frame Rail Adapter Kits
Transmission Mount, LS into GM A/G-Body Car, Transmission Crossmember, Adapter Plate, Kit
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Estimated Ship Date from Georgia: Monday 11/9/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
6423
Part Type:
Product Line:
Summit Racing Part Number:
TRD-6423
Item Number:
5606274
UPC:
086923064237
Bracket Attachment Style:
Bolt-on
Bracket Material:
Steel
Bracket Color:
Black
Mounting Hardware Included:
Yes
Quantity:
Sold as a kit.
Trans-Dapt Performance Frame Rail Adapter Kits
Trans-Dapt Performance frame rail adapter kits acclimate your non-200R4 frame rail extension car for proper installation of transmission and LS engine. These kits alter the crossmember attachment holes on GM A/G-body cars that do not have a THM200R4 frame rail extension on the driver (left) side, allowing you to fasten Trans-Dapt's crossmember to the frame, and in turn have the capability to install a T56, TH400, 4L60, 65, 70, or 4L80E transmission with an LS engine. These adapter brackets are formed from steel and painted black.
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Some parts are not legal for use in California or other states with similar laws / regulations
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