Raypak 53A/55A/105A/151/153/155A/183A Pilot Orifice [IID] (003903F)

The Raypak pilot orifice is designed for compatible 53A, 55A, 105A, 151, 153, 155A, and 183A IID heater applications where the supported pilot fuel-delivery opening needs replacement. A pilot orifice is useful because it helps meter fuel correctly to the pilot assembly, supporting cleaner ignition performance and steadier pilot operation.

This replacement is especially useful when the original orifice is clogged, damaged, or no longer dependable. Matching the correct IID pilot orifice helps preserve intended startup behavior and cleaner service results.

The 003903F is a practical service part when a compatible Raypak heater needs a pilot orifice to restore dependable pilot-fuel delivery.

• Raypak pilot orifice
• Designed for compatible IID heater applications
• Supports 53A, 55A, 105A, 151, 153, 155A, and 183A models
• Useful when the original orifice is clogged or damaged
• Helps restore cleaner and more dependable ignition performance