Power Steering Pump Pulley for Volvo Penta and OMC Stern Drive 3853804

Power Steering Pump Pulley – Fits OMC Cobra & Volvo Penta Sterndrives

This high-quality power steering pump pulley is a direct replacement for OMC Cobra Sterndrives and Volvo Penta Sterndrives manufactured between 1986-1998. It is designed for models equipped with 3.0L, 4.3L, 5.0L, 5.7L, 5.8L, and 7.4L engines, including Volvo Penta SX-M models.

This part replaces the following OEM and aftermarket part numbers: OMC 0983839, 983839, 0983734, 983734, 0909981, 909981; Volvo Penta 3853804; and Sierra 18-8964.

• Engineered as a direct replacement for a perfect fit.
• Constructed from high-strength metal for durability and long service life.
• Compatible with a wide range of popular sterndrive steering pumps.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

OMC Applications

Volvo Penta Applications

Technical Specifications

Package Contents

• 1 x Power Steering Pump Pulley (Replaces 3853804 / 0983839)

Installation Guide

1. Ensure the engine is off and the battery is disconnected.
2. Loosen the tensioner to remove the serpentine belt from the power steering pump pulley.
3. Use a specialized pulley remover tool to safely detach the old pulley from the pump shaft. Do not use a jaw puller, as it may damage the pulley.
4. Position the new pulley onto the pump shaft.
5. Use a pulley installer tool to press the new pulley on until it is flush with the end of the shaft and aligned with other engine pulleys.
6. Reinstall the serpentine belt and apply the correct tension.
7. Reconnect the battery, start the engine, and check for proper pulley operation and belt alignment.

Troubleshooting & FAQ

How do I confirm this pulley fits my engine?
Verify your original part number against our cross-reference list, which includes Volvo Penta 3853804 and OMC 0983839. This pulley is confirmed to fit OMC Cobra and Volvo Penta sterndrives (1986-1998) with 3.0L, 4.3L, 5.0L, 5.7L, 5.8L, and 7.4L engines, including the SX-M series.

What are the signs of a failing power steering pulley?
Common symptoms include a persistent squealing sound from the engine bay, visible wobble in the pulley while the engine is running, cracks or chips on the pulley itself, and increased difficulty in steering.

Do I need a special tool for installation?
Yes, using a dedicated power steering pump pulley remover and installer kit is required. Attempting installation with improper tools can damage the pulley, the pump, or both.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.