Power Steering Pump Pulley – Fits Volvo Penta 3.0L-7.4L & OMC Stern Drives (Replaces 3853804, 983839, 983734, 909981)
Power Steering Pump Pulley – Fits Volvo Penta 3.0L-7.4L & OMC Stern Drives (Replaces 3853804, 983839, 983734, 909981) is backordered and will ship as soon as it is back in stock.
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Power Steering Pump Pulley – Fits Volvo Penta 3.0L-7.4L & OMC S...
Power Steering Pump Pulley – Fits Volvo Penta 3.0L-7.4L & OMC Stern Drives (Replaces 3853804, 983839, 983734, 909981) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket Power Steering Pump Pulley is designed for a wide range of Volvo Penta and OMC Stern Drive engines. It fits various V6 and V8 models, including Volvo Penta's 3.0L to 7.4L SX-M series (1990–2017) and OMC's 3.0L to 7.4L Cobra models (1986–1998), ensuring reliable performance for your power steering system.
This component serves as a direct interchange for Volvo Penta part 3853804; OMC/Johnson/Evinrude parts 983839, 983734, and 909981; Sierra part 18-8964/188964; and JLM Marine part AM3853804.
- Engineered for direct OEM replacement installation.
- Constructed from a high-strength, corrosion-resistant metal alloy.
- Covered by a 1-year warranty against manufacturing defects.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3853804 |
| OMC/Johnson/Evinrude | 983839 |
| OMC/Johnson/Evinrude | 983734 |
| OMC/Johnson/Evinrude | 909981 |
| Sierra | 18-8964/188964 |
| JLM Marine | AM3853804 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Fits various Volvo Penta SX-M series sterndrive engines from 1990 to 2017.
Compatible with OMC Cobra Sterndrive models from 1986 to 1998.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Volvo Penta | 3.0L 4-cylinder (SX M series) | 130-135 | 4-Stroke | 1990–2017 | 3853804 | |
| Volvo Penta | 4.3L V6 (SX M series) | 190-225 | 4-Stroke | 1990–2017 | 3853804 | |
| Volvo Penta | 5.0L V8 (SX M series) | 220-270 | 4-Stroke | 1990–2017 | 3853804 | |
| Volvo Penta | 5.7L V8 (SX M series) | 250-320 | 4-Stroke | 1990–2017 | 3853804 | |
| Volvo Penta | 5.8L V8 (SX M series) | 275-310 | 4-Stroke | 1990–2017 | 3853804 | |
| Volvo Penta | 7.4L V8 (SX M series) | 310-425 | 4-Stroke | 1990–2017 | 3853804 | |
| Volvo Penta | 8.2L V8 (SX M series) | 380-430 | 4-Stroke | 1990–2017 | 3853804 | Partial models |
| OMC | Cobra Sterndrive 3.0L 4-cylinder | 135 | 4-Stroke | 1986–1998 | 983839/983734/909981 | |
| OMC | Cobra Sterndrive 4.3L V6 | 205-230 | 4-Stroke | 1986–1998 | 983839/983734/909981 | |
| OMC | Cobra Sterndrive 5.0L V8 | 235-260 | 4-Stroke | 1986–1998 | 983839/983734/909981 | |
| OMC | Cobra Sterndrive 5.7L V8 | 260-300 | 4-Stroke | 1986–1998 | 983839/983734/909981 | |
| OMC | Cobra Sterndrive 7.4L V8 | 330-425 | 4-Stroke | 1986–1998 | 983839/983734/909981 |
Technical Specs
- Product Type
- Power Steering Pump Pulley
- Installation
- Direct OEM replacement
- Housing Material
- High-strength corrosion-resistant metal alloy
- Fitting Type
- V-Belt Pulley
- Application
- Power Steering Pump Drive
- Warranty
- 1 year against manufacturing defects
What’s in the Box
- 1 x Power Steering Pump Pulley (Replaces 3853804/983839/983734/909981)
Installation Notes
- Disconnect the battery to prevent accidental starting.
- Locate the existing power steering pump pulley on the engine.
- Release tension from the drive belt using the belt tensioner.
- Remove the belt from the pulley.
- Unbolt the old pulley from the pump shaft using appropriate tools.
- Clean the mounting surface on the pump shaft thoroughly.
- Align the new pulley with the pump shaft keyway.
- Secure the pulley with manufacturer-specified torque settings.
- Reroute the drive belt according to the engine's diagram.
- Adjust belt tension to recommended specifications.
- Reconnect the battery and test steering operation.
- Verify no abnormal noises during system operation.
Troubleshooting & FAQ
How do I know if my power steering pump pulley is failing?
Common signs of a failing pulley include squealing or grinding noises from the engine bay, visible wobble or damage to the pulley itself, and increased difficulty in steering. The drive belt may also show signs of uneven wear or fraying.
Will this pulley fit my specific engine model?
This pulley is designed for the Volvo Penta and OMC models listed in the compatibility table. Always cross-reference your engine model, year, and original part number with the provided tables to ensure a correct fit.
What tools are required for installation?
You will typically need a socket set, wrenches, a belt tensioner tool, and potentially a pulley puller/installer tool, depending on your specific engine configuration. Refer to your engine's service manual for exact tool requirements.
Is any maintenance required after installation?
Periodically inspect the drive belt for proper tension and signs of wear. Keep the pulley clean from grease and debris. No other specific maintenance is required for the pulley itself.
What is the difference between V-belt and serpentine belt pulleys?
This is a V-belt style pulley, designed for V-shaped belts. Serpentine belt pulleys have multiple small grooves for a flat, ribbed belt. They are not interchangeable. Ensure you are replacing your pulley with the correct type for your belt system.
Why are specific torque specs not included?
Torque specifications can vary between different engine models and manufacturers. It is critical to consult your official service manual for the correct torque settings to prevent damage to the pulley or pump.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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