Part No. 3303-321 (also written 3303/321) Transmission Yokes, 1330 Series, 31/32 X 1.378 Splines, 1.886" Hub Dia
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Specifications 3303-321 · 1330 Series Transmission Yoke
- Part number
- 3303-321
- Part type
- Transmission Yoke
- Condition
- New
- Series
- 1330
- Counter bore diameter
- 0
- Hub diameter
- 1.886
- Splines count diameter
- 31/32 X 1.378
- Center u-joint to end
- 7.250
- Weight
- 4.07 lb
Fitment
1330 series parts use 1.062" u-joint bearing caps on a 3.625" snap-ring-to-snap-ring width (nominal). Confirm the cap diameter on the mating yoke or joint before ordering.
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About 3303-321
3303-321 -- 1330 Series Transmission Yoke, 31/32-Spline x 1.378", 7.250"
The 3303-321 is the 1330 series equivalent of the TH400/BW208/241 family yokes at a 7.250" C/U-joint to end dimension. On vehicles where the original driveshaft was equipped with a 1330 series U-joint -- common on lighter-duty GM trucks and SUVs -- this yoke preserves the original series without requiring an upgrade of the entire driveshaft. Upgrading to 1350 series without changing the tube yoke or U-joint is a common mistake that results in incorrect cap seating.
No counterbore -- hub OD provides sole centering. The 1.886" hub is the GM output specification for TH400 and related transfer case applications. Standard steel construction is appropriate for stock and lightly modified street vehicles. For performance builds with this spline count, see T2-3-10831HP (6.750" chromoly, 31/32-spline) or T2-3-10201HP (7.000", 30/31-spline chromoly).
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3303-321 questions
What series is 3303-321?
3303-321 is a 1330 series transmission yoke. Nominal 1330 dimensions are 1.062" bearing caps on a 3.625" snap-ring-to-snap-ring width. Measure the cap diameter on your old joint to confirm the series before ordering.
What spline count does 3303-321 have?
3303-321 is cut for 31/32 X 1.378 splines (count × major diameter). Count the splines on the output shaft and measure across the major diameter to confirm.
Is 3303-321 in stock?
Yes. 1 is in stock in Florida. Most stock orders placed before 2 pm EST on a weekday ship the same day.