Sierra 18-4258 Marine Pipe Plug 3/4 Inch NPT Black Steel

The Sierra 18-4258 is a 3/4 inch NPT pipe plug designed for marine applications including MerCruiser stern drives, Mercury Marine engines, and other inboard/sterndrive systems. This essential replacement part features black steel construction with a convenient square drive design for easy installation and removal.

Key Features:

• Thread size: 3/4" - 14 NPT (National Pipe Thread)
• Black steel construction for durability in marine environments
• Square drive design for secure wrench grip
• Direct OEM replacement quality
• Pipe sealant with Teflon recommended for threads

Replaces OEM Part Numbers: MerCruiser 22-33198A1, 22-41622, 22-46754, 22-33198; Crusader 113186; GLM 21892; Mallory 9-41205; Osco 1016012

Sierra Marine is the market leader in aftermarket marine engine parts, offering products that meet or exceed original equipment specifications. This pipe plug is engineered to provide reliable sealing and long-lasting performance in demanding marine applications.