Overview
G2 Axle and Gear’s 90-2021-3R is a strap style pinion yoke with a GM 3R Series U-joint, built for GM 10 Bolt 8.5 Inch axles.
It fits both front and rear axle locations. Strap mounting and the GM 3R Series joint are the points to match.
Key features
- Strap style mounting rather than U-bolts
- GM 3R Series U-joint
- Both front and rear locations are covered.
- Designed for GM 10 Bolt 8.5 Inch axle types
Working with strap yokes
A strap yoke holds the U-joint with a strap rather than a clamp set, so the strap and its hardware are the first things to inspect. Cracked or stretched straps can let the yoke shift under load, which causes noise and uneven joint wear. Replace damaged straps before reassembly.
GM 3R joints are paired with yokes that match their bearing cup size and spacing, so check the joint before buying. A 3R yoke fitted to the wrong joint can bind or fail early. Keep the pinion nut torque and preload in the hands of a driveline shop, which has the tools to set them.
- Inspect straps for cracks or stretching
- Confirm the joint pattern before buying
- Have preload set by a driveline shop
Specifications
| Brand | G2 Axle and Gear |
|---|---|
| Part number | 90-2021-3R |
| UPC | 631410122978 |
| Yoke style | Strap style |
| U-joint series | GM 3R Series |
| Axle location | Rear and front |
| Axle type | GM 10 Bolt 8.5 Inches |
| Listed fitment category | Universal Fit |
Vehicle fitment
No vehicle is named for this yoke. Its compatibility details are the GM 10 Bolt 8.5 Inches axle type, the GM 3R Series joint and the front or rear location.
Axle designs other than GM 10 Bolt and joint series other than 3R are outside these details. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Clamp hardware on a strap yoke differs from U-bolts, so inspect the strap and the flange before removal. Set bearing preload once the new yoke is on, using a shop with a preload gauge.
What’s included
The yoke is the only item this part covers. Check the strap, flange and pinion nut needs against your installation before starting.
