We recommend flange yokes at the transfercase because the yoke sits inside the transfercase and a lot of times if a yoke fails it will split the transfercase. A companion flange will not do that. It is a stronger option than a yoke and provides a clean installation.
|Companion Flange - Splined Bore|
1410 series, Ø1.326x30 spline, Ø2.125 hub diameter
4 Drilled Holes on 4.750BC, Ø3.750-F pilot
We designed this 1410/1480 series companion flange to fit the 30 spline front output shaft common on GM NP203 and NP205 transfer cases in the 70s and 80s. These flanges use a larger hub diameter than the stock yokes and 3R CV flanges used originally, so a different seal will likely be needed. For cases with a 3.061' seal bore, use TIM-473468, NAT-473468, or CR-21211.
|Spline Major Diameter||D||1.326|
|Spline Type||Involute Spline|
|Pilot Bore Diameter||C||3.750-F|
|Bolt Circle Diameter||B||4.750|
|Bolt Circle Hole Diameter
(D = Drilled, T = Tapped)
|Number of Holes||4.000|
|Brake Pilot Diameter||0.000|
|Ground Hub Diameter||E||2.125|
|Length Thru Bore||F||2.000|
|Flange Face to End of Hub||G||2.500|
|Bare Flange Part Number (if assembly)|
|Slinger Part Number (if assembly)||Can use ROK-DEFR34-1 (not included)|
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