MBU1045 BEARING. Tapered Roller Bearing.

Outer wheel bearing on Leyland, Marshall and JWD 2WD tractors.
Nuffield 3/45, 4/65
Leyland 253, 245, 344, 384, 255, 270, 262, 272, 282, 502, 602, 702, 802
Marshall 502, 602, 702, 802, 902, 752XL, 852XL, 952XL
JWD 274, 284, 294. 
(see item number 36 in the illustration)

Inner Half Shaft Bearing on Leyland Lightweight tractors.
BMC Mini
Nuffield 4/25
Leyland 154, 184, 235, 302 
Marshall 302
(see item number 27 in the illustration)

Primary PTO Shaft Support Bearing on Leyland and Marshall tractors (2-speed PTO).
Leyland Middleweight 602, 604, 702, 704, 802, 804 (2-Speed PTO)
Leyland Heavyweight 285, 2100, 485, 4100
Marshall 602, 604, 702, 704, 802, 804, 902
Marshall 904XL, 752XL, 754XL, 852XL, 854XL, 952XL, 954XL
(see item number 27 in the illustration)

Alternative part numbers: 88G273, GHB144.