Powerhead Gasket Set 

Interchanges/Replaces

GLM

• 39390

Johnson/Evinrude Outboard

• 398047
• 438904

Mallory

• 9-64101

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0118	GLM 33740 Johnson/Evinrude Outboard 325092 Mallory 9-60427	3	Carburetor Gasket		N/A
18-0975	GLM 34420 Johnson/Evinrude Outboard 333008 Mallory 9-60419	1	Carburetor to Silencer Gasket		N/A
18-0989	GLM 34430 Johnson/Evinrude Outboard 321794 Mallory 9-60418	1	Air Silencer Gasket		N/A
18-1202	GLM 35440 Johnson/Evinrude Outboard 329830	1	Thermostat Cover Gasket		N/A
18-1205	GLM 35430 Johnson/Evinrude Outboard 329828 Mallory 9-60425	1	Adapter Cover Gasket		N/A
18-1207	Johnson/Evinrude Outboard 329833 343863 Mallory 9-60432	1	Exhaust Manifold Gasket		N/A
18-1212	GLM 34530 Johnson/Evinrude Outboard 326926 Mallory 9-60439	1	Intake Manifold Gasket		N/A
18-1219	GLM 46100 Johnson/Evinrude Outboard 320880	1	Grommet Gasket (V6 Crossflow)		N/A
18-1221	GLM 46110 Johnson/Evinrude Outboard 330273	1	Retainer Gasket (V4/V6 Loop Charge)		N/A
18-3836	GLM 34280 Johnson/Evinrude Outboard 329836 Mallory 9-63821	1	Head Gasket		N/A
NSS	Johnson/Evinrude Outboard 336308	1	Gasket	No Image	N/A