Strange Ultra & Billet Case Installation Kit Using Tapered Bearing Support & 35 Spline Pro Gear Support Races Are Not Included


Part Number: R5238UC

Ultra Case tapered bearing supports – N1950A / N1950AD
Billet Case tapered bearing supports – N1950AB / N1950AC
Installing 35 spline Pro gear

Support Races Are Not Included

Kit Includes

Front and rear pinion bearings – N1936 / N2001F
Side bearings and races – D1590 or D1592
Tail bearing – N1943
Pinion seal – N1961
Pinion support o-ring – N1950B
Flanged pinion nut – N1922B
Solid machinable pinion preload spacer – N1924A or N1921B
Pinion depth shim kit – N1962UC
ARP ring gear bolts – N1975 & N1976, D2004B & N1950K, or N1973

Billet Cases Do Not Use Ring Gear Bolt Washers

Information Required

Case Type
Ultra Case / Billet Case

Bore Size – Ultra Case Only
3.250″ / 3.812″

For 4.00″ bore Ultra Case – Please call

For Strange Spool
Steel or Aluminum

For Other Spools
The ring gear bolts supplied are designed for a flange thickness of .375″ to .447″
If your spool exceeds .447″, the ring gear bolts may be be too short
Specify if using an aluminum spool

Related Components

Kit with pinion races……………. R5238UCR
Kit for 28 spline pinion…. R5237UC / R5237UCR
Fel Pro gasket……………………….. H1112G
Fel Pro Teflon® gasket………….. H1111
Lube Locker gasket……………….. H1111S


Ultra Case installation kit for tapered pinion support & 35 spline pinion- No support races

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