Correct Part number for OS 140RX rear bearing needed (non EFI)

[Ihncheol Park]

Well, I am trying to figure which one is correct.
Based on OS engine website, the part number is

46030008: Rear Bearing for 108 ~ 160. (OS engine website, OS 140RX manual)
Inner Diameter: 20mm
Outer Diameter: 37mm
Width:           9mm
Bearing Markings & details: Japan NSK 6904; this bearing is not sealed one
based on picture.
------
Search at Tower hobbies show two bearings.

29430000: Rear Bearing for 140RX-FI (this is shown in the 140RX-EFI manual
also)
FEATURES: Metal construction.
          Rubber sealed bearing.
INCLUDES: One rear bearing.
SPECS:    Outer Diameter: 1.45" (37mm)
          Inner Diameter: 1.76" (20mm)
          Width:           .35" (9mm)
---
29430010: for 140RX-EFI        <<<<<<<<<<<<<<<<<<<<<< What is this?
FEATURES: Metal construction
          Sealed bearing
SPECS:    Outer Diameter: 36.9mm (1.455")
          Inner Diameter: 20.0mm (0.788")
          Height:          8.8mm (0.345")

Are there different EFIs?
Which one goes in the standard 140RX?
Do these also fail like bearings that were discussed while ago?
My friend's 140RX (non-EFI) did not have a sealed bearing so I believe it
was the first one.
He is trying to find out if he can use a sealed bearing in his engine.
It looks like OS is not helping customers or Tower hobbies do not know what
those are.
Thanks,

Ihncheol Park
CompTIA A+ COMP10648565
1973 White Ave., #402
Moscow, ID 83843
(208) 883-7882 (home)
(208) 661-5018 (cellular)
PatternFlyer at msn.com


=====================================
# To be removed from this list, send a message to 
# discussion-request at nsrca.org
# and put leave discussion on the first line of the body.
#