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21617-30010

Gasket, Main Passage Plug · used in 290 model codes

Commonality 290 A widely shared part used across many model codes. Usually easier to source used or aftermarket.

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Searches by part number. Specifications may differ by year or grade, so please confirm fitment with the seller before purchasing.

Even with the same part number, specifications may differ by year or grade. Confirm fitment with a dealer before installation.

These parts appear on most of the model codes that use this part number.

Part number	Part name	Used in
21723-21030	Spring, Idle Adjusting	278
21611-22010	Gasket, Main Jet	295
21821-31140	Screw(For 2Nd Regulator Cover Set)	334
21791-13010	Ring, Snap, No.1(For Carburetor Link)	371
94512-00600	Washer, Seal(For Head Cover Set)	670
94110-40800	Nut(For Steering Damper)	1,132
91612-61025	Bolt (For Control Shaft Cover)	1,195
94511-00800	WASHERSPRING	1,206
91651-60614	Bolt	1,786
91611-G0612	Bolt	2,033
94130-00802	Nut, No.1 (For Center Support Bearing)	2,068
31478-30010	Bleeder Plug Cap	2,238