Sierra Shift Shaft Housing Bushing 18-2154, Replaces Mercury Marine 23-30617A2

The Sierra 18-2154 Shift Shaft Housing Bushing is a replacement component for the shift shaft housing assembly on Mercruiser sterndrive and inboard shift systems. This bushing supports the shift shaft as it passes through the housing, reducing wear, play, and binding at the pivot point so shift engagement stays smooth and precise. Over time the factory bushing wears from repeated shift-lever movement and exposure to marine conditions, which can introduce slop into the shift linkage; installing a fresh Sierra bushing restores tight, accurate shift feel.

Sierra manufactures the 18-2154 as a direct cross-reference to Mercury Marine part number 23-30617A2, so it installs in the same location using the same mounting relationship as the original equipment part. It is sold as a single bushing (one unit per package) and is sized to match the shift shaft housing bore it replaces.

This part is identified by UPC 030999311580 and falls within Sierra's Mercruiser Shift Cables product line, making it easy for boat owners and marine technicians to source the correct bushing when servicing shift shaft housings rather than replacing the entire housing assembly.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-2154
• Item Type: Shift Shaft Housing Bushing
• Product Category: Mercruiser Shift Cables
• Weight: 0.03 pounds
• UPC: 030999311580
• OEM Cross Reference: Mercury Marine 23-30617A2

Fitment

• Designed for use in Mercruiser shift shaft housing assemblies as a direct replacement for the original bushing.

Replaces (OEM)

• Mercury Marine 23-30617A2

Frequently Asked Questions

What does the Sierra 18-2154 Shift Shaft Housing Bushing fit? The Sierra 18-2154 is designed for Mercruiser shift shaft housing assemblies, replacing the bushing that supports the shift shaft where it passes through the housing.

Is the 18-2154 bushing a genuine OEM part or aftermarket? Sierra 18-2154 is an aftermarket replacement bushing manufactured to cross-reference directly with Mercury Marine 23-30617A2, so it is not a Mercury Marine branded part but is built to fit the same application.

Does 18-2154 replace Mercury Marine part 23-30617A2? Yes, Sierra 18-2154 is the direct cross-reference for Mercury Marine 23-30617A2, so it installs in the same shift shaft housing location as that original part.

How much does the shift shaft housing bushing weigh? The Sierra 18-2154 Shift Shaft Housing Bushing weighs 0.03 pounds.

How many bushings come in one package of 18-2154? One Sierra 18-2154 Shift Shaft Housing Bushing is included per package.

What UPC is used to verify I am ordering the correct part? Sierra 18-2154 is identified by UPC 030999311580, which can be used to confirm you are ordering the correct shift shaft housing bushing.

Why would I need to replace the shift shaft housing bushing? A worn shift shaft housing bushing allows play or looseness in the shift shaft, which can cause imprecise or sloppy shift lever feel; replacing it with the Sierra 18-2154 restores a tighter fit at that pivot point.

Can I replace just the bushing instead of the entire shift shaft housing? Yes, the Sierra 18-2154 lets you replace only the worn bushing within the shift shaft housing assembly rather than sourcing the complete housing.

What category of Mercruiser parts does 18-2154 belong to? Sierra lists the 18-2154 Shift Shaft Housing Bushing within its Mercruiser Shift Cables product line.

Is the Sierra 18-2154 easy to install? The 18-2154 is a single-piece bushing sized to the shift shaft housing bore, allowing it to be installed in place of the worn original bushing during routine shift linkage service.