Designation system for oil level gauges and oil pick-up rings
Examples and the applicable options for oil level gauges and oil pick-up rings for SONL housings when sold separately are given below.

Example
GG-TSO 217-517/V51
| where | GG-TSO = | ![]() |
217-517 = | ![]() |
||
/V51 = | ![]() |
Applicable options
![]() | Part |
GG-TSO | Oil level gauge |
![]() | Size identification |
2(00)-5(00) | Housing size identification |
![]() | Suffix |
/V51 | Signifies spare part |
Example
GH-TSO 217-517/V51
| where | GH-TSO = | ![]() |
217-517 = | ![]() |
||
/V51 = | ![]() |
Applicable options
![]() | Part |
GH-TSO | Oil pick-up ring |
![]() | Size identification |
2(00)-5(00) | Housing size identification |
![]() | Suffixes |
/V51 | Oil pick-up ring – steel
(signifies spare parts with standard performance) |
/MB | Oil pick-up ring – brass
(replacement for standard) |