Power Steering Pump – Fits MerCruiser 4.3L-8.2L V6/V8 (Replaces 16792A1, 16792A39, 16792A33)
Power Steering Pump – Fits MerCruiser 4.3L-8.2L V6/V8 (Replaces 16792A1, 16792A39, 16792A33) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Power Steering Pump – Fits MerCruiser 4.3L-8.2L V6/V8 (Replaces 167...
Product Details
This is a direct aftermarket replacement Power Steering Pump – Fits MerCruiser 4.3L-8.2L V6/V8 engines manufactured between 1987 and 2016. It is engineered to meet or exceed OEM specifications for MerCruiser, Volvo Penta, and OMC sterndrive applications, ensuring reliable steering performance. This assembly features a durable cast aluminum housing and a chrome reservoir with a billet aluminum cap for enhanced longevity and corrosion resistance.
It serves as a direct interchange for MerCruiser 16792A1, 16792A39, 16792A33; Sierra 18-7508; Volvo Penta 3888323, 3863130; and aftermarket references including Heurofosh, GHmarine, ATVMaster, Dasbecan 16792A39, and CCIYU 90507A3.
- Designed for direct OEM replacement with no modifications needed.
- Features a chrome-finished reservoir, billet aluminum cap, and bottom-exiting return hose.
- Built in an ISO 9002 certified facility for consistent quality.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| MerCruiser | 16792A1 |
| MerCruiser | 16792A39 |
| MerCruiser | 16792A33 |
| Sierra | 18-7508 |
| Volvo Penta | 3888323 |
| Volvo Penta | 3863130 |
| Heurofosh | 16792A39 |
| GHmarine | 16792A39 |
| ATVMaster | 16792A39 |
| Dasbecan | 16792A39 |
| CCIYU | 90507A3 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This pump fits a wide range of MerCruiser V6 and V8 engines with Alpha and Bravo drives from 1987–2016.
It is also cross-compatible with several Volvo Penta V6 and V8 models from 1992–2016.
Fitment for OMC V6 and V8 models from 1992–2004 is supported, though it is critical to verify your existing part number.
| 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 Specs
- 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
What’s in the Box
- 1 x Power Steering Pump Assembly (16792A39/16792A33/16792A1)
Installation Notes
- Ensure the engine is off and cool. Disconnect the boat's battery.
- Place a drain pan under the power steering pump to catch fluid.
- Loosen the drive belt tensioner and remove the belt from the pump pulley.
- Disconnect the high-pressure and return lines from the pump. Plug the lines to prevent contamination.
- Remove the mounting bolts securing the old pump to the engine bracket.
- Carefully remove the old pump assembly.
- Transfer the pulley from the old pump to the new one if not included. Ensure it is aligned correctly.
- Mount the new pump onto the engine bracket and torque the bolts to manufacturer specifications.
- Reconnect the high-pressure and return lines to the new pump.
- Reinstall the drive belt and set the correct tension.
- Fill the reservoir with the recommended power steering fluid. Do not overfill.
- Reconnect the battery, start the engine, and bleed the system by turning the steering wheel lock-to-lock several times until operation is smooth. Check for leaks and top off fluid as needed.
Troubleshooting & FAQ
How do I know if this pump fits my specific boat model?
The surest way is to match the part number from your old pump to one of the numbers listed in our Part Number Matrix. While this pump fits a wide range of MerCruiser, Volvo Penta, and OMC engines, variations can exist even within the same model year. Always visually compare your existing pump with our product photos before ordering.
What are the signs of a failing power steering pump?
Common symptoms include a whining or groaning noise that changes with engine RPM, stiff or jerky steering, and fluid leaks from the pump housing. If you notice metal flakes in the power steering fluid, it's a strong indicator of internal pump failure.
Is the pulley included with this pump?
This assembly does not typically include the pulley. You will need to carefully remove the pulley from your original pump and install it on the new one. Ensure it is properly seated and aligned to prevent belt wear or slippage.
What type of fluid should I use with this pump?
Always use the power steering fluid recommended by your engine's manufacturer. Using the wrong type of fluid can damage the pump and other steering components. Refer to your owner's manual for the correct fluid specification.
How often should a power steering pump be replaced?
Power steering pumps do not have a fixed replacement interval and are typically replaced only when they fail. To maximize lifespan, inspect hoses regularly for leaks or cracks and ensure the fluid level is maintained with the correct fluid type.
Does this pump require any special bleeding procedure after installation?
Yes, after installation, the system must be bled to remove air. With the engine running, slowly turn the steering wheel from full lock to full lock several times until the steering feels smooth and no more air bubbles appear in the reservoir. Keep the fluid level topped up during this process.
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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