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GM 3R Series

Center Supports

PICTURE PART NUMBER MAKE MODEL AND YEAR BEARING ID CC OF HOLES NOTES
3R80-10
click on the picture to expand		 3R80-10 Cadillac Buick Multiple applications 1.575 1.500 Housing and bearing included
3R80-15
click on the picture to expand		 3R80-15 Cadillac Buick Multiple applications 1.575 Bearing only. Fits in housings of 3R80-10, 3R80-25, 3R80-30 and 3R80-35
3R80-25
click on the picture to expand		 3R80-25 Cadillac Buick Multiple applications 1.575 2.250 Housing and bearing included,
Housing is 1" taller than 3R80-10
3R80-30
click on the picture to expand		 3R80-30 Cadillac Factory limo (66-85) 1.575 5.125 Housing and bearing included
3R80-35
click on the picture to expand		 3R80-35 Buick Electra
LeSabre
Wildcat		 1.575 Bearing not included. Order 3R80-15 separately.
3R80-50
click on the picture to expand		 3R80-50 Chevrolet GMC S10/S15 (94-03) 1.378 6.625 Square type used with double CV
3R80-60
click on the picture to expand		 3R80-60 Chevrolet GMC 1/2 ton pickups (99-03) 1.378 6.625 Enclosed type bracket with studs

Companion Flanges

PART NUMBER SPLINE COUNT SPLINE DIA. HUB DIA. THRU HOLE FACE TO END PILOT DIA. BOLT CIRCLE DIA. NOTES
3R01-02 27 1.188 1.521 1.475 1.985 2.875 3.937
3R01-292 30 1.312 2.110 1.150 3.125 Serrated Chry 9.25" Front / Serrated Flange

End Yokes

PART NUMBER SPLINE COUNT SPLINE DIA. HUB DIA. THRU HOLE C/L TO END UJOINT NOTES
3R01-292 30 1.312 2.110 1.150 3R Chry 9.25" Front / Serrated Flange
3R04-01 27 1.188 1.692 1.475 3.575 3R Strap type / Includes new pinion seal
3R04-02 30 1.312 1.938 1.150 3.375 3R Strap type
3R04-03 30 1.312 2.110 1.150 3.375 3R Strap type
3R04-04 27 1.188 1.692 1.475 3.575 3R Strap type / Has dampener/ Includes new pinion seal
3R04-271 27 1.170 1.942 1.287 2.866 3R 2-94-58X Ubolt Kit Included

Flange Yokes

PART NUMBER PILOT DIA. BOLT CIRCLE DIA. BOLT HOLE DIA. FACE TO C/L UJOINT NOTES TYPE
3R02-21 3.125 F 4.250 .455 1.687 3R Saginaw non-CV STD
3R02-291 Serrated 2.913 .334 2.000 3R Serrated flange face / Fits front shaft on 03+ Dodge pickups STD
3R02-311CV 3.125 F 4.250 .455 1.687 3R Saginaw CV flange / Replaces 3R02-20 / Includes CV kit with ball CV
3R02-361CV 3.622 4.440 .422 1.687 3R Saginaw CV flange / For Hummer H3 conversion / Includes CV kit with ball CV
3R02-391CV 3.125 F 4.000 .455 1.687 3R Saginaw CV flange / For early Buick/Cadillac / Includes CV kit with ball CV

H Yokes

PART NUMBER C/L TO C/L NOTES
3R24-20 3.250 3R Barrel type

Pinion Yokes

DIFF MODEL PART NUMBER SPLINE COUNT SPLINE DIA. HUB DIA. THRU HOLE C/L TO END UJOINT NOTES
GM 7.25 3R01-02 27 1.188 1.521 1.475 1.985 N/A 3.937 BC flange with 2.875 pilot
Chrysler 9.25 Front 3R01-292 30 1.312 2.110 1.150 3.125 3R Chry 9.25" Front / Serrated Flange
GM 7.5 3R04-01 27 1.188 1.692 1.475 3.575 3R Strap type,
Includes new pinion seal
GM 8.5 3R04-02 30 1.312 1.940 1.150 3.375 3R Strap type
GM 9.25 3R04-02 30 1.312 1.938 1.150 3.375 3R Strap type
GM 8.6 3R04-03 30 1.312 2.110 1.150 3.375 3R Strap type
GM 7.5 3R04-04 27 1.188 1.692 1.475 3.575 3R Strap type / Has dampener / Includes new pinion seal
GM 8.2 BOP 3R04-271 27 1.170 1.942 1.287 2.866 3R 2-94-58X Ubolt Kit Included

Slip Yokes

PART NUMBER SPLINE COUNT MAJOR SPLINE DIA. C/L TO END UJOINT
3R03-32 31/32 1.378 7.375 3R

Small Parts and Kits

PART NUMBER PART TYPE DESCRIPTION
3R18-321 Boot Boot kit with 2 clamps for GM T/C yoke shaft
3R25-20 CV repair kit Complete 3R center ball repair kit
3R94-10 U-bolt kit 3R Series u-bolt kit includes (2) u-bolts and (4) nuts and washers

Splined Stubs

PART NUMBER SPLINE COUNT MAJOR SPLINE DIA. END TO POINT OF WELD TUBE SIZE NOTES
3R53-320 31/32 1.375 8.750 2.75X.065 Midship type for slip yoke / Non-coated splines
3R53-321 31/32 1.375 8.750 2.75X.065 Midship type for slip yoke / Coated splines

Transmission Yokes

PART NUMBER SPLINE COUNT MAJOR SPLINE DIA. C/L TO END GROUND HUB DIA. UJOINT NOTES
3R03-350 26/27 1.176 5.460 1.500 3R Full spline non-vented,
GM 7812557
3R03-400 31/32 1.391 8.000 1.866 3R Full spline non-vented,
GM 7838665
3R03-401CV 31/32 1.391 6.875 1.866 3R Recessed spline vented
3R03-402 31/32 1.391 7.187 1.866 3R Full spline non-vented
3R03-403 30/32 1.391 7.875 1.866 3R Full spline non-vented with dampener
3R03-700 26/27 1.176 6.760 1.500 3R Recessed spline vented,
GM 7848635
3R03-701 26/27 1.176 6.760 1.500 3R Full spline non-vented with dampener / GM 7845093
3R03-702 26/27 1.176 6.760 1.500 3R Recessed spline non-vented,
GM 26042557
3R03-703 26/27 1.176 6.760 1.500 3R Full spline non-vented,
GM 26051658

UJoints

PART NUMBER BEARING CAP SNAP RING LOCATION SNAP RING STACKUP NOTES
3R51-31 1.125 Inside 2.562 3R Saginaw with recess center in cross

Weld Yokes

PART NUMBER BUTT DIA. TUBE SIZE C/L TO WELD UJOINT NOTES
3R26-20 1.766 2.00X.120 1.675 3R CV style with ball
3R26-22 1.958 OE Tube 1.750 3R Fits front shaft of late model GM pickups
3R26-27 2.625 2.75X.065 2.250 3R .5" longer than OE
3R26-271 2.625 2.75X.065 1.750 3R
3R26-29 2.562 2.75X.095 2.250 3R .5" longer than OE
3R26-30 2.844 3.00X.083 1.750 3R
3R26-30A 2.844 3.00X.083 2.280 3R 3R aluminum
3R26-31 2.875 3.00X.065 1.750 3R
3R26-35 3.383 3.50X.065 1.940 3R
3R26-40 3.875 4.00X.065 1.690 3R
3R26-40A 3.844 4.00X.083 2.100 3R 3R aluminum
3R26-41 3.844 4.00X.083 1.690 3R

Yoke Shafts

PART NUMBER SPLINE COUNT MAJOR SPLINE DIA. C/L TO END SPLINE LENGTH UJOINT NOTES
3R82-321 32 1.378 7.810 3.350 3R GM transfer case