YS Engine YSS1041 Regulator O-ring Pack - 50pcs Fuel System Spares  [YSS1041]

Regulator O-ring Kit

This 50pcs O-ring pack is a compact spare set for nitro RC engine fuel systems, designed to seal regulator and carburettor interfaces on RC-scale models.

O-rings stop fuel leaks and help preserve steady fuel pressure at the regulator, supporting consistent idle and throttle response while tuning. Replace rings that show cuts, flattening, or hardening to prevent fuel delivery faults.

When fitting new rings, seat each O-ring evenly in its groove and confirm smooth movement of any valve parts before reassembly. Store spares dry and out of direct sunlight to prolong the elastomer life.