3-Bolt Adapter Flange Yoke Kit
Part No. T35-GMFD-01K

Fits 6L80, 6L90, 8L90, 10L80 units, TR6060, TR3160 manual units. Also fits ’05–’06 Pontiac GTO (differential side).

View Instructions

The ideal upgrade for modified performance vehicles, Sonnax 3-bolt adapter flange yoke kit T35-GMFD-01K makes it easy to convert a two-piece driveline to a one-piece, U-joint-style driveline. Combined with Sonnax tubing and weld yokes, this unique flange dramatically increases strength and durability while reducing future maintenance costs.

  • Eliminates the troublesome guibo and/or CV joint(s)
  • Great for drivetrain swaps and retrofits in custom applications such as street rods and hot rods
  • Manufactured from 6061-T6 aluminum
  • Precision-machined for excellent fit and balance
  • Spacer included for 8L90 & 10L80 transmissions; see instructions

T35-GMFD-01K is a custom part and may fit more models than noted above. Measure pinion and output flange bolt holes and bolt circle diameter to determine if this yoke is appropriate for your build.

Bolt Circle Diameter Calculator

Enter measurements from your transmission output flange in millimeters to see if T35-GMFD-01K will fit your application.

Your bolt circle diameter ( mm) work with Sonnax adapter flange yoke T35-GMFD-01K.

  • 3-Bolt Adapter Flange Yoke
  • Spacer 8L90 & 10L80 Only
  • U-Joint Series: 1350
  • Pilot Type: F
  • Material: 6061-T6
  • Bolt Hole Dia.: 0.500"
  • Flange Face to Centerline: 3.000"
  • Weight: 1.980lbs
  • Flange Outer Dia.: 5.450"
  • Pilot Dia.: 0.631"
  • Bolt Count: 3
  • Bolt Circle Dia.: 110mm

Where to Buy

Contact your local driveline shop for availability. If you need assistance finding a shop, or if you would like to become a distributor, fill out the form and a Sonnax driveline product specialist will contact you.

  •  3-Bolt Adapter Flange Yoke Kit T35-GMFD-01K
  •  3-Bolt Adapter Flange Yoke Kit T35-GMFD-01K details

Adapter Flange Yokes

  • High-strength aluminum yokes are the ideal upgrade for a variety of performance vehicles
  • Custom design makes it easy to convert a two-piece driveline to a one-piece, U-joint style driveline, dramatically increasing strength and durability while reducing future maintenance costs
  • Ideal for drivetrain swaps and retrofits in custom street rod/hot rod applications

What vehicles do these flanges fit?

Measure bolt circle diameter as well as pinion and output flange bolt hole diameters to determine if these yokes will fit your build.

  1. U-Joint Series
  2. Bolt Hole Dia.
  3. Bolt Circle Dia.
  4. Pilot Style
  5. Flange Face to Centerline