Sierra Drive Shaft Housing to Bell Housing Gasket 18-2847, Replaces 27-54014

The Sierra 18-2847 is a drive shaft housing to bell housing gasket designed to seal the mating surface between the drive shaft housing and bell housing on Mercruiser outdrive assemblies. This gasket forms the critical seal at this junction, helping prevent water intrusion and gear lubricant leaks where the drive shaft housing bolts to the bell housing. Replacing this gasket is a standard step any time the drive shaft housing or bell housing is removed for service, inspection, or outdrive repair, since the original gasket material is not reusable once disturbed.

Sierra manufactures this gasket as a direct-fit replacement carrying OEM cross-reference 27-54014, so it installs in place of the factory gasket without modification. Keeping a fresh gasket on hand for this application is good practice for any owner performing outdrive maintenance, as a compromised seal at this joint can allow water into the housing or lubricant to leak out, leading to corrosion or gear damage over time.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2847
• Description: Drive Shaft Housing to Bell Housing Gasket
• Application: Mercruiser Bell Housing
• OEM Cross Reference: 27-54014
• Weight: 0.1 pounds
• UPC: 030999313553

Fitment

This gasket is intended for the drive shaft housing to bell housing joint on Mercruiser outdrive assemblies.

Replaces (OEM)

• 27-54014

Frequently Asked Questions

What is the Sierra 18-2847 gasket used for? It seals the joint between the drive shaft housing and the bell housing on a Mercruiser outdrive, preventing water and lubricant leaks at that connection.

What OEM part number does the 18-2847 replace? Sierra part 18-2847 cross-references to OEM number 27-54014.

How much does this gasket weigh? The Sierra 18-2847 drive shaft housing to bell housing gasket weighs 0.1 pounds.

Is this gasket reusable after removal? No. Like most housing gaskets, the 18-2847 should be replaced with a new one any time the drive shaft housing or bell housing is disassembled, since a used gasket will not reseal reliably.

Where on the outdrive does this gasket install? It fits at the mating surface where the drive shaft housing bolts to the bell housing on the outdrive.

Does this gasket fit outdrives other than Mercruiser? The 18-2847 is designated for the bell housing application on Mercruiser outdrives; no other manufacturer fitment is specified for this part.

What is the UPC for Sierra part 18-2847? The UPC for the Sierra 18-2847 gasket is 030999313553.

Is Sierra 18-2847 a genuine Sierra part? Yes, 18-2847 is a Sierra-manufactured gasket built as a direct equivalent to OEM number 27-54014.

Do I need any other gaskets when replacing this one? That depends on what else is being serviced at the same time; the 18-2847 itself covers only the drive shaft housing to bell housing joint, so other seals at the housing should be inspected separately.

Why would this gasket need replacing? A leaking or deteriorated gasket at the drive shaft housing to bell housing joint can let water into the outdrive or allow lubricant to seep out, so the 18-2847 is replaced whenever that seal is compromised or the housing is opened for service.