Napoleon N455-0055 Built-In, PRO & Prestige Propane Rear Burner Orifice

What Problem This Part Solves

A clogged, damaged, missing, or incorrect rear burner orifice can interfere with proper propane flow to the rotisserie burner, resulting in poor burner performance or improper flame characteristics. Replacing it with the correct Napoleon N455-0055 restores the factory-specified propane orifice for compatible rear burner systems.

Key Features

• Genuine Napoleon OEM replacement part
• Napoleon part number N455-0055
• Designed specifically for propane (LP) grills
• 1.25 mm rear burner orifice
• Regulates propane flow to the rear rotisserie burner

Compatibility / Fits Models

Fits select propane versions only of Napoleon grills, including:

Built-In Series

• BIG30RBPSS
• BIG32RBPSS-1
• BIPRO500
• BIPRO665
• BIPRO665-3
• BIPRO825
• BIPRO825-3

Prestige Series

• P500RB-SS
• P500RBPSS
• P500RSIB
• P500RSIBPK-3-PHM
• P500RSIBPSS
• P500RSIB-B
• P500RSIB-CH
• P500RSIB-PHM
• P500RSIBSS
• P500SS
• P665PSS
• P665RSIB
• P665RSIBPSS
• Prestige 500
• Prestige 500RB
• Prestige 500RSIB
• Prestige 665

Prestige PRO Series

• Prestige PRO 500RSIB
• PRO500RSIB
• PRO500RSIBPSS
• PRO665-3
• PRO665RSIB
• PRO665RSIBPSS
• PRO825-3
• PRO825RSBI
• PRO825RSBIPSS
• PRO825RSBIPSS-3

Compatibility varies by grill revision and fuel type. The N455-0055 is for propane (LP) applications only and should not be substituted for a natural gas rear burner orifice.

Installation / Use Instructions

1. Shut off the propane supply and allow the grill to cool completely.
2. Remove the existing rear burner orifice and install the N455-0055 in the original location.
3. Verify all gas connections and proper burner operation before returning the grill to service.

Because this component controls fuel flow, installation should be performed by a qualified gas appliance technician when required.

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FAQ Section

Does this fit my grill?
The Napoleon N455-0055 fits select propane Built-In, Prestige, and Prestige PRO grills. Compatibility depends on the exact model, production revision, and fuel type, so confirm your complete grill model number before ordering.

What is this part made of?
The N455-0055 is a precision gas orifice manufactured by Napoleon for use in compatible rear burner assemblies.

How long should this part last?
A rear burner orifice can provide many years of service under normal conditions. Replacement may be necessary if the orifice becomes clogged, damaged, corroded, or otherwise unable to properly regulate fuel flow.

How do I install it?
The N455-0055 installs in the rear burner gas supply system in place of the original propane orifice. Because it is a gas-flow component, proper installation and leak testing are important for safe grill operation.

Why choose this replacement part over others?
The Napoleon N455-0055 is a genuine OEM 1.25 mm propane rear burner orifice designed to provide the correct fuel-flow specification for compatible Napoleon grills.