Original BMC part number 2K8938, differential carrier bearing for MGA (all) and early MGB through 1967. Many manufacturers use the generic part numbers LTJ40 or 7208.

Generic dimensions (in inches) for the differential carrier bearing are:
ID=1.5748" (40.0-mm) -- OD=3.1496" (80.0-mm) -- W=0.7087" (18.0-mm) -- Weight=0.850-lb

Bearing,differential carrier, MGA all models
2K8938            BMC, British Leyland, Rover
34341, 50497, 50497Z,   BMC alternate numbers
2K2544, 2K6544, 2K8938, BMC alternate numbers
  SC1049 (supersedes to CHM163)
RAX102            AH Spares
RX4020            A Head 4 Healeys
CHM163            Brown & Gammons
CHM163            Moss Motors UK
127-700           Moss Motors USA
5-918             Victoria British



MANUFACTURER     PART NUMBER
ABC              N447
ABMA             40BH02 
BCA              7208N 
BMC              2K8938
Bullard          P512-1070
Cummins          S1727
Delco            30208 
FAF              7208WN SU, 7208WNSU
Fafnir           7208 WN SU
FAG              7208BEGAP, 7208BEGP6, 7208BG, 7208 B.U (A/O), 
                 7208 BJP UA, 7208-B-JP-UA, 7208B.JP.UA, 7208BJPUA, 
                 7208 B.U (A/O), 7208B.UO
FBC              LJT40
GMC              902208
Hoffmann         LJT40, 140CD
Hyster           52208
IHC              117700W1
Koyo-Torrington  7208BG, 7208-BG, 7208C
MRC              7208 PJDU
NDH              30208
New Departure    U-30208
NSK              7208 BG, 7208BG, 7208BWG, 7208C
NTN              7208 BG, 7208BG, 7208BWG
R&M              LJT 40
RHP              7208BWG, 7208X6, LJT 40
Pollard          SO140
RHP              7208, 7208BWG, LJT40
SNR              7208, 7208BG
SKF              7208 BEAG (Y/P), 7208BEGAP, 7208 BEGAY, 7208 BEGBY, 
                 7208 BG, 7208-BEG-P, 7208BEGP, 720 8BG, 170476
STEYR            7208 BEAG (Y/P), 7208-BEG-P, 7208 BEGTGP
UNK              7208BG
USAFSN           3110-00-156-6824, 3110-00-554-3093
Westingel        1508490
WIKI             7208 BG
ZWZ              7208C


PART NUMBER      MANUFACTURER
117700W1         IHC
140CD            Hoffmann
1508490          Westingel
170476           SKF
192978
2K8938           BMC
30208            Delco, NDH
3110-00-156-6824 USAFSN
3110-00-554-3093 USAFSN
40BH02           ABMA
52208            Hyster
7208             RHP, SNR
7208BDU
7208 BG          WIKI
7208 BEAG (Y/P)  SKF, STEYR
7208 BEAG
7208 BEGAY       SKF
7208 BEGBY       SKF
7208 BEGTGP      STEYR
7208-BEG-P       SKF, STEYR
7208BEG
7208BEGAP        FAG, SKF
7208BEGP         SKF
7208BEGP6        FAG
720 8BG          SKF
7208 BG          NSK, NTN, SKF
7208-BG          Koyo
7208BG           FAG, Koyo-Torrington, NSK, NTN, SNR, UNK
7208 BJP UA      FAG
7208-B-JP-UA     FAG
7208B.JP.UA      FAG
7208BJPUA        FAG
7208 B.U (A/O    FAG
7208B.UO         FAG
7208BUO
7208BWG          NSK, NTN, RHP
7208C            KOYO, NSK, ZWZ
7208N            BCA
7208PJDE-BRZ
7208 PJDU        MRC
7208PJDU
7208WNDU
7208WNSU         FAF
7208WN SU        FAF
7208 WN SU       Fafnir
7208X6           RHP
902208           GMC
LJT40            FBC, Hoffman, R&M, RHP
N447             ABC
P512-1070        Bullard
SC1049           (supersedes to CHM163)
SO140            Pollard
S1727            Cummins
U-30208          New Departure

Applications:
Austin Healey 1953-1956, BN1-BN4 w/Early Spiral Bevel Diff.;
MG, MGA, All;
MG, MGB, 1962-1967 w/Banjo Type Axle;