Exhaust Manifold Mounting Kit 

Additional Details:

• For: Mercruiser GM Big Block V-8 454 cu. in. (models 330, 340 & 7.4L)

Use With:

• 18-1957-2: Manifold

Interchanges/Replaces

GLM

• 33765

Mallory

• 9-40575

Osco

• 9011-MK

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0418	Barr CHVA470000 MC47-27-46820 Crusader 96653 GLM 33760 Mallory 9-61400 Mercruiser Stern Drive 27-46820 OMC Inboard 909613 OMC Stern Drive 3852472 909613 Osco CW-GH Volvo Penta 3852472	1	Exhaust Manifold Mounting Gasket		N/A
NSS	Mercruiser Stern Drive 13-35048	10	Lockwasher	No Image	N/A