Power Steering Pump – Fits MerCruiser 4.3L-8.2L V6/V8 (Replaces 16792A1, 16792A39, 16792A33)
This power steering pump assembly is a direct replacement for a wide range of MerCruiser, Volvo Penta, and OMC sterndrive engines manufactured between 1987 and 2016. It is designed for V6 and V8 gas engines from 4.3L to 8.2L, ensuring reliable performance for both Alpha and Bravo drive configurations.
Engineered to meet OEM specifications, this pump serves as a high-quality aftermarket alternative to MerCruiser part numbers 16792A1, 16792A39, and 16792A33, as well as several other cross-compatible parts from brands like Sierra and Volvo Penta.
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Installation Method: Direct OEM-style fitment.
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Housing Construction: Features a durable cast aluminum body with a chrome reservoir and billet aluminum cap.
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Connection Type: The return hose connects to the bottom of the reservoir.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand |
Part Number |
| MerCruiser |
16792A1 |
| MerCruiser |
16792A39 |
| MerCruiser |
16792A33 |
| Volvo Penta |
3888323 |
| Volvo Penta |
3863130 |
| Sierra |
18-7508 |
| Heurofosh |
16792A39 |
| GHmarine |
16792A39 |
| ATVMaster |
16792A39 |
| Dasbecan |
16792A39 |
| CCIYU |
90507A3 |
Compatible Engine Models
Confirm your engine model/year in the table below.
| Brand |
Model |
Rated HP |
Stroke |
Years |
OEM Part No. |
Notes |
| MerCruiser |
4.3L 262 V6 |
190-220 |
4-Stroke |
1987-2016 |
16792A1/16792A39/16792A33 |
Fits both Alpha and Bravo drives |
| MerCruiser |
5.0L 305 V8 |
220-260 |
4-Stroke |
1987-2016 |
16792A1/16792A39/16792A33 |
Fits both Alpha and Bravo drives |
| MerCruiser |
5.7L 350 V8 |
250-330 |
4-Stroke |
1987-2016 |
16792A1/16792A39/16792A33 |
Fits both Alpha and Bravo drives |
| MerCruiser |
5.8L 357 Alpha |
330 |
4-Stroke |
1987-2016 |
16792A1/16792A39/16792A33 |
Alpha drive only |
| MerCruiser |
6.2L 377 V8 |
320-430 |
4-Stroke |
1987-2016 |
16792A1/16792A39/16792A33 |
Fits both Alpha and Bravo drives |
| MerCruiser |
6.3L 383 Bravo |
350-430 |
4-Stroke |
1987-2016 |
16792A1/16792A39/16792A33 |
Bravo drive only |
| MerCruiser |
6.3L 385 |
350-430 |
4-Stroke |
1987-2016 |
16792A1/16792A39/16792A33 |
Performance tuned version |
| MerCruiser |
7.4L 454 V8 |
310-385 |
4-Stroke |
1987-2016 |
16792A1/16792A39/16792A33 |
Fits both Alpha and Bravo drives |
| MerCruiser |
8.2L 502 V8 |
380-425 |
4-Stroke |
1987-2016 |
16792A1/16792A39/16792A33 |
Fits both Alpha and Bravo drives |
| Volvo Penta |
4.3L V6 |
190-225 |
4-Stroke |
1992-2016 |
3888323/3863130 |
Cross-compatible with MerCruiser pumps |
| Volvo Penta |
5.0L V8 |
220-270 |
4-Stroke |
1992-2016 |
3888323/3863130 |
Cross-compatible with MerCruiser pumps |
| Volvo Penta |
5.7L V8 |
250-320 |
4-Stroke |
1992-2016 |
3888323/3863130 |
Cross-compatible with MerCruiser pumps |
| OMC |
4.3L V6 |
175-205 |
4-Stroke |
1992-2004 |
|
Cross-compatible with MerCruiser pumps |
| OMC |
5.0L V8 |
210-260 |
4-Stroke |
1992-2004 |
|
Cross-compatible with MerCruiser pumps |
| OMC |
5.7L V8 |
250-310 |
4-Stroke |
1992-2004 |
|
Cross-compatible with MerCruiser pumps |
Technical Specifications
| Specification |
Value |
| Product Type |
Power Steering Pump Assembly |
| Installation |
Direct OEM replacement |
| Connection |
Return hose exits bottom of reservoir |
| Housing Material |
Metal (cast aluminum) |
| Housing Color |
Chrome/silver |
| Weight |
4.42 kg (9.72 lbs) |
| Warranty |
30-day refund/replacement (varies by seller) |
| Other Technical Attributes |
Features billet aluminum cap, chrome reservoir |
Package Contents
- 1 x Power Steering Pump Assembly (16792A39/16792A33/16792A1)
Installation Guide
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Safety First: Disconnect the boat's battery before beginning work.
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Access the Pump: Loosen and remove the serpentine/drive belt from the pump pulley.
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Drain Fluid: Place a suitable container under the pump and disconnect the high-pressure and return hoses to drain the power steering fluid.
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Remove Old Pump: Unbolt the existing power steering pump from its mounting bracket and carefully remove it from the engine bay.
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Transfer Pulley: If your new pump does not include a pulley, use a dedicated pulley remover/installer tool to transfer the pulley from the old pump to the new one.
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Mount New Pump: Position the new pump on the mounting bracket and fasten it securely with the mounting bolts.
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Reconnect Hoses: Attach the high-pressure and return lines to the correct ports on the new pump. Ensure fittings are tight to prevent leaks.
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Reinstall Belt: Route the drive belt back over the pulley according to your engine's diagram and ensure it is properly tensioned.
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Fill System: Fill the reservoir with new, manufacturer-recommended power steering fluid. Do not overfill.
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Bleed Air from System: Reconnect the battery. Start the engine and slowly turn the steering wheel from lock to lock several times to purge air from the system.
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Final Check: Turn off the engine and re-check the fluid level, topping off as needed. Inspect all connections for any signs of leaks.
Troubleshooting & FAQ
Q: How do I confirm this fits my engine?
A: This pump fits a wide range of MerCruiser, Volvo Penta, and OMC engines from 1987-2016. Please check the "Compatible Engine Models" table and cross-reference your engine model and year. It is also critical to visually compare your old pump to our product images, as variations can exist within a model series.
Q: What are the signs my power steering pump is failing?
A: Common signs of a failing pump include whining or groaning noises that change with engine RPM or when turning the wheel, a stiff or difficult-to-turn steering wheel, or visible fluid leaks from the pump housing or hoses.
Q: What is the difference between this and an OEM part?
A: This pump is a high-quality aftermarket part designed to meet or exceed OEM specifications for fit, form, and function. It provides a reliable, cost-effective alternative to genuine MerCruiser or Volvo Penta parts, using comparable materials like a cast aluminum housing and a durable chrome reservoir.
Q: OEM vs. Aftermarket?
A: 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.
Q: How fast do you ship and how much does it cost?
A: 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.
Q: What is your warranty and return policy?
A: 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?
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Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
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Fast Global Shipping: Free delivery worldwide in 5–15 days.
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Direct from Manufacturer: Competitive pricing without compromising quality.