Transmission Mount Saddle Kit

Transmission crossmember mount designed for GM transmissions (T350, T400, 700R4, etc.). The crossmember plate can be welded to a length of 3″ x 1-1/2″ x 1/8″ wall HSS tubing which can also serve as a welded crossmember. The saddle can drop down without disturbing the exhaust. Designed for Model “A” frames but works great in any vehicle that has a flat floor. The plate for the transmission insulator is 6-1/4″ below the bottom of the crossmember tube and about 7″ ahead of the front of the tube. HSS tubing not included, but available in the Options menu.

Note: The welded kit includes the crossmember tube (3″ x 1-1/2″ x 1/8″ wall x 40″) with tabs welded to the tube. A $10.50 UPS charge is included in the price of the welded kit and the individual tube price.

A kit is also available which includes a welded saddle assembly, two crossmember tabs, and all necessary hardware. This is called “Welded saddle, no tube” in the options list. This is for builders who will use their own tube, but would like the saddle welded.

We offer both a stock-style rubber insulator and a polyurethane insulator from Energy Suspension. On personal builds, I'll only use the urethane mounts - they help prevent the vehicle from "jiggling" at idle and from torquing off a light. They feel much more secure than the rubber mounts. We believe they're worth the price difference.

Also available are taller crossmember plates that will drop the saddle 1" lower than the standard kit. See options.

Parts included:
Plate, transmission mount saddle, 21154, 1
Plate, transmission mount saddle side, 211522, 2
Plate, crossmember saddle mount, 211511, 2
Bolt, 7/16-14 x 1-1/4″ long, Grade 5 hex, zinc plated, 4
Washer, 7/16″ SAE, zinc plated, 8
Nut, 7/16-14 nylok, 4