Power Trim Bushing, pack of 8 | Sierra 18-2341-1-9

Sierra 18-2341-1-9 Power Trim Bushing | Pack of 8 | MerCruiser Sterndrive | Replaces Mercury Marine 23-815950

The Sierra #18-2341-1-9 is a replacement power trim bushing for MerCruiser sterndrive power trim systems. Sold as a pack of 8 bushings. Replaces Mercury Marine 23-815950 (also listed as 23-8159501).

Product Details:

• Part Number: 18-2341-1-9 (Sierra)
• SKU: SIERRA-18-2341-1-9
• Manufacturer: Sierra
• Type: Power Trim Bushing
• Pack: 8 bushings
• Application: MerCruiser sterndrive power trim systems
• Replaces: Mercury Marine 23-815950 / 23-8159501
• Condition: New

Cross-Reference — Replaces:

• Mercury Marine: 23-815950, 23-8159501

Additional Information

Power Trim Bushing — Function and Wear:

Power trim bushings are the pivot and wear bushings used at the trim ram, tilt cylinder, and mounting bracket pivot points in the MerCruiser sterndrive power trim system. They provide a low-friction bearing surface between the moving trim components and the pivot pins, reducing metal-to-metal contact and absorbing lateral loads during trim operation. Worn or missing trim bushings cause:

• Excessive play or slop in the trim cylinder or ram pivot points — the drive shifts or rattles during trim operation
• Metal-to-metal contact at pivot pins, causing accelerated pin and bracket wear
• Uneven trim operation or trim system binding
• Accelerated wear on adjacent power trim components if not replaced promptly

Pack of 8 — Coverage:

The 18-2341-1-9 is sold as a pack of 8 bushings. A complete MerCruiser power trim system rebuild typically requires multiple bushings at several pivot points. Confirm the number of bushings required for your specific trim system configuration in the MerCruiser service manual before ordering to ensure the pack of 8 covers your rebuild requirements.

Mercury Marine Part Number Format — 23-815950 vs. 23-8159501:

Mercury Marine uses two number formats for this bushing — 23-815950 and 23-8159501 — representing the same part in different catalog generations. Both numbers are superseded by the Sierra 18-2341-1-9. If your parts list or service manual references either Mercury number, the Sierra 18-2341-1-9 is the correct aftermarket replacement.

Inspect Trim Pivot Pins at Every Bushing Service:

When replacing worn power trim bushings, inspect the pivot pins at each bushing location for wear, grooving, or corrosion. A worn or grooved pin will destroy new bushings prematurely. Replace any pivot pins that show wear at the bushing contact surface at the same service. Lubricate pivot pins and bushings with marine-grade grease during reassembly per the MerCruiser service manual specification.

Installation Notes:

• Confirm bushing part number against Mercury Marine parts catalog for your specific MerCruiser trim model before ordering
• Inspect pivot pins for wear or corrosion before installing new bushings
• Lubricate pivot pins and bushings with marine-grade grease during reassembly
• Refer to MerCruiser power trim service manual for bushing locations, installation procedure, and torque specifications

Frequently Asked Questions

1. How many bushings are included?
8 bushings per pack.

2. What Mercury Marine part number does this replace?
Mercury Marine 23-815950 and 23-8159501 — the same part in two Mercury catalog number formats.

3. How do I know if my power trim bushings need replacement?
Key symptoms are excessive play or rattling at the trim cylinder or ram pivot points, uneven trim operation, or visible wear and slop when the drive is manually moved through its trim range with the engine off. Inspect bushings during any power trim service or when trim play is noticed.

4. Should I replace the pivot pins at the same time?
Inspect them — if the pivot pins show wear, grooving, or corrosion at the bushing contact surface, replace them at the same service. Installing new bushings on worn pins causes rapid bushing failure.

5. What lubricant should I use on the bushings and pins?
Marine-grade water-resistant grease per the MerCruiser power trim service manual specification for your trim system model.