Royal Enfield Thunderbird 500 & Classic 500 EFI Air Filter with Cover 888127

The Royal Enfield 888127 Air Filter with Cover is a genuine OEM air-intake service kit for catalogue-confirmed Thunderbird 500 and Classic 500 EFI/UCE motorcycles. The kit combines the replaceable 500cc air-filter element with its matching filter-element cover.

A clean and correctly fitted air filter helps prevent dust and debris from entering the engine while maintaining the designed intake airflow. This genuine kit is suitable for routine servicing or replacing a damaged, contaminated or missing filter-and-cover assembly.

What This Product Is

• Genuine Royal Enfield air-filter element with matching cover
• Exact part number: 888127
• Factory description: Air Filter with Cover – TB 500cc
• Also described in the Classic 500 parts catalogue as Air Filter Element with Cover
• Service kit comprising the catalogue-listed 500cc filter element and its cover

What This Product Is Not

• Not the complete air-filter box
• Not the outer air-filter-box lid
• Not the intake bellow or rubber hose
• Not the complete air-intake assembly
• Not an air-filter cleaning kit
• Not a universal aftermarket filter
• Not the Thunderbird 350 air-filter element

Key Features

• Genuine Royal Enfield OEM spare
• Includes the 500cc air-filter element and matching cover
• Designed for the original air-filter-box arrangement
• Helps protect the engine from airborne dust and debris
• Suitable for scheduled service and replacement of a damaged filter assembly
• Direct replacement where the parts catalogue lists 888127 or alternate number 418001

Confirmed Compatibility

Compatibility Requiring Verification

Not Compatible / Do Not Order For

Do not order this part for Thunderbird 350, Thunderbird X 350, Classic 350 UCE, Bullet 350 UCE, Electra 350 UCE, Continental GT 535, Himalayan 411, Scram 411, Classic 350 Reborn, Meteor 350, Hunter 350, Bullet 350 J-Series, Himalayan 450, Guerrilla 450 or any Royal Enfield 650 Twin unless the exact model-specific catalogue confirms 888127.

Part Number and Kit Notes

Related Air-Intake Parts

When Should This Part Be Replaced?

• The filter is heavily clogged with dust
• The filter media is torn, crushed or oil-soaked
• The cover is cracked, warped or missing
• The filter no longer seats securely in the air box
• The motorcycle has been operated extensively in dusty conditions
• Replacement is due under the motorcycle's service schedule
• Water or contamination has entered the air-filter compartment

What You Will Receive

1 × Genuine Royal Enfield Air Filter with Cover Kit 888127

Based on the catalogue kit reference, this consists of the compatible 500cc filter element and filter-element cover. The complete air-filter box, outer lid, O-ring, intake bellow, hose clips, screws and mounting hardware are not included unless physically present in the sealed Royal Enfield pack.

Installation Note

• Switch off the motorcycle and allow the engine to cool.
• Open the air-filter compartment using the correct service procedure.
• Remove the old filter without allowing loose dust to enter the clean side of the intake.
• Clean the inside of the air-filter box using a dry, lint-free method.
• Do not push dirt into the throttle body or intake tract.
• Fit the new filter in the correct orientation.
• Ensure the filter and cover seat evenly without gaps.
• Inspect the air-box O-ring, bellow and clips before reassembly.
• Do not use the motorcycle if the air-filter box cannot be closed and sealed correctly.

Return-Prevention Note

This listing is for the air-filter element with its matching element cover. It is not the complete air-filter box or outer side-panel lid. Before ordering, confirm the motorcycle is a compatible 500cc EFI/UCE model, compare the old filter shape and dimensions, and verify part number 888127 or alternate number 418001.

Frequently Asked Questions

Is 888127 a genuine Royal Enfield part?

Yes. It is listed in Royal Enfield parts references as the genuine air filter with cover for the 500cc application.

Does it fit Thunderbird 500?

Yes. The Thunderbird 500 parts catalogue lists 888127 as the air-filter-with-cover kit in the 500cc air-filter assembly.

Does it fit Classic 500 EFI?

Yes. The Classic 500 air-filter-box catalogue lists 888127 as the air-filter element with cover.

Does it fit Thunderbird 350?

No confirmed fitment. Thunderbird 350 uses a separate 350cc air-filter element and cover arrangement in the model catalogue. Do not order 888127 for Thunderbird 350 without matching the old part.

Does the kit include the complete air-filter box?

No. It includes the filter element and matching filter-element cover, not the complete air-filter housing.

What is alternate number 418001?

The Classic 500 parts catalogue identifies 418001 as an alternate number for the 888127 air-filter-element-with-cover kit.

Can the filter be cleaned and reused?

Replace the filter when it is damaged, excessively contaminated or due under the service schedule. Do not wash or oil a standard paper-type OEM filter unless the Royal Enfield service instructions specifically permit it.

888127, 418001, Royal Enfield Thunderbird 500 air filter, Classic 500 EFI air filter, UCE 500 air filter with cover, Thunderbird 500 filter element, Classic 500 filter kit, 581007/A, 581008/A.