Use with plastic breather valves only.
Small hole.
Spacer set, 4-pk. Incl. .110″, .115″, .120″ and .125″ sized spacers.
Used to set correct end play.
Note: Steel breathers require steel breather valve spacers.
Plastic breathers require plastic spacers.
Do not mix steel and plastic parts.
Fits:> 50-E77 BT(NU)
