Power Steering Pump Assembly for MerCruiser 4.3L–8.2L V6/V8 | Replaces 16792A1, 16792A39 and 16792A33
Power Steering Pump Assembly for MerCruiser 4.3L–8.2L V6/V8 | Replaces 16792A1, 16792A39 and 16792A33 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Power Steering Pump Assembly for MerCruiser 4.3L–8.2L V6/V8 | Repla...
Power Steering Pump Assembly for MerCruiser 4.3L–8.2L V6/V8 | Replaces 16792A1, 16792A39 and 16792A33 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket power steering pump assembly is designed as a replacement for selected MerCruiser 4.3L–8.2L V6 and V8 sterndrive applications. It is also listed for cross-reference with selected Volvo Penta and OMC applications. Confirm the part number, reservoir configuration, hose routing, mounting arrangement and product photos against the pump being replaced before ordering, because fitment can vary by engine, drive, year and serial range.
The assembly features a cast-aluminum housing, chrome-finished reservoir, billet-aluminum cap and a return hose connection exiting from the bottom of the reservoir. It is intended to restore hydraulic steering assistance when the original pump is worn, noisy or leaking.
- Aftermarket replacement power steering pump assembly.
- References MerCruiser part numbers 16792A1, 16792A39 and 16792A33.
- Chrome reservoir with billet-aluminum cap.
- Bottom-exiting return-hose configuration.
- Direct-replacement design for applications using the matching pump configuration; installation may require transferring the original pulley.
- Manufactured in an ISO 9002-certified facility, as represented for this replacement assembly.
Part Number Matrix
The following numbers are reference identifiers associated with this replacement. A cross-reference alone does not replace confirmation of the exact engine, drive and pump configuration.
| Brand or Source | 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 and Model Compatibility
The application information below reflects the listed reference range for this pump. Verify the complete engine model, year, drive, serial range and original pump number before purchase. The engine and horsepower details must be considered together with the drive and pump configuration.
| Brand | Model | Rated HP | Stroke | Years | Reference Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | 4.3L 262 V6 | 190–220 | 4-Stroke | 1987–2016 | 16792A1 / 16792A39 / 16792A33 | Listed for Alpha and Bravo drive applications; verify configuration. |
| MerCruiser | 5.0L 305 V8 | 220–260 | 4-Stroke | 1987–2016 | 16792A1 / 16792A39 / 16792A33 | Listed for Alpha and Bravo drive applications; verify configuration. |
| MerCruiser | 5.7L 350 V8 | 250–330 | 4-Stroke | 1987–2016 | 16792A1 / 16792A39 / 16792A33 | Listed for Alpha and Bravo drive applications; verify configuration. |
| MerCruiser | 5.8L 357 Alpha | 330 | 4-Stroke | 1987–2016 | 16792A1 / 16792A39 / 16792A33 | Listed for Alpha drive applications. |
| MerCruiser | 6.2L 377 V8 | 320–430 | 4-Stroke | 1987–2016 | 16792A1 / 16792A39 / 16792A33 | Listed for Alpha and Bravo drive applications; verify configuration. |
| MerCruiser | 6.3L 383 Bravo | 350–430 | 4-Stroke | 1987–2016 | 16792A1 / 16792A39 / 16792A33 | Listed for Bravo drive applications. |
| MerCruiser | 6.3L 385 | 350–430 | 4-Stroke | 1987–2016 | 16792A1 / 16792A39 / 16792A33 | Performance-tuned application; verify the original pump number. |
| MerCruiser | 7.4L 454 V8 | 310–385 | 4-Stroke | 1987–2016 | 16792A1 / 16792A39 / 16792A33 | Listed for Alpha and Bravo drive applications; verify configuration. |
| MerCruiser | 8.2L 502 V8 | 380–425 | 4-Stroke | 1987–2016 | 16792A1 / 16792A39 / 16792A33 | Listed for Alpha and Bravo drive applications; verify configuration. |
| Volvo Penta | 4.3L V6 | 190–225 | 4-Stroke | 1992–2016 | 3888323 / 3863130 | Listed as cross-compatible; confirm the original pump and mounting details. |
| Volvo Penta | 5.0L V8 | 220–270 | 4-Stroke | 1992–2016 | 3888323 / 3863130 | Listed as cross-compatible; confirm the original pump and mounting details. |
| Volvo Penta | 5.7L V8 | 250–320 | 4-Stroke | 1992–2016 | 3888323 / 3863130 | Listed as cross-compatible; confirm the original pump and mounting details. |
| OMC | 4.3L V6 | 175–205 | 4-Stroke | 1992–2004 | — | Verify the original pump number and physical configuration. |
| OMC | 5.0L V8 | 210–260 | 4-Stroke | 1992–2004 | — | Verify the original pump number and physical configuration. |
| OMC | 5.7L V8 | 250–310 | 4-Stroke | 1992–2004 | — | Verify the original pump number and physical configuration. |
Technical Specifications
- Product Type
- Power steering pump assembly
- Application
- Selected marine sterndrive steering systems
- Installation
- Replacement installation; confirm configuration before fitting
- Return Connection
- Return hose exits from the bottom of the reservoir
- Housing Material
- Cast aluminum
- Housing and Reservoir Finish
- Chrome/silver
- Cap
- Billet aluminum
- Weight
- 4.42 kg (9.72 lb)
- Pulley
- Not typically included; inspect the original pump and product contents before installation
- Warranty and Returns
- Subject to the applicable seller warranty and return policy
What's in the Box
- 1 × Power steering pump assembly
The assembly is associated with reference numbers 16792A1, 16792A39 and 16792A33. The pulley is not typically included unless specifically stated in the order or package information.
Installation Notes
- Ensure the engine is switched off and cool. Disconnect the boat battery.
- Place a drain pan below the pump to collect steering fluid.
- Release belt tension and remove the drive belt from the pump pulley.
- Disconnect the high-pressure and return lines, then plug or cap the lines to prevent contamination.
- Remove the mounting bolts and carefully remove the original pump.
- If the replacement does not include a pulley, transfer the original pulley using the proper puller and installation tool. Do not hammer the pulley onto the shaft.
- Mount the replacement pump and tighten the fasteners to the engine manufacturer's specifications.
- Reconnect the high-pressure and return lines, reinstall the belt and set the correct belt tension.
- Fill the reservoir with the fluid specified for the engine and steering system. Do not overfill.
- Bleed the system according to the engine or steering-system service procedure. Check for leaks, abnormal noise and correct fluid level before returning the boat to service.
Troubleshooting and FAQ
How do I confirm fitment for my boat?
Match the number on your original pump with a reference in the Part Number Matrix, then compare the reservoir, hose connections, mounting points and pulley arrangement with the replacement. Also verify the complete engine model, year, drive and serial range. Variations can occur within the same engine family.
What are common signs of a failing power steering pump?
Common symptoms include whining or groaning that changes with engine speed, stiff or uneven steering, and fluid leakage around the pump or connections. Contaminated fluid or metal particles can indicate internal component wear.
Is the pulley included?
The pump does not typically include the pulley. If the original pulley is reusable, it may need to be transferred with the correct puller and installation procedure. Confirm the actual package contents before beginning installation.
What fluid should I use?
Use only the power steering fluid specified by the engine or steering-system manufacturer. The correct specification should be confirmed in the owner's or service manual.
Does the system need to be bled after replacement?
Yes. Air should be removed after installation using the procedure specified for the steering system. Monitor the fluid level, turn the steering as directed by the service instructions and inspect carefully for leaks.
Is this an OEM part?
No. This listing is for an aftermarket replacement assembly intended for applications using the listed reference numbers and matching physical configuration.
What are the shipping and warranty terms?
Shipping availability, delivery timing, warranty coverage and return eligibility are determined by the applicable seller policy and are shown with the order information.
Safety and Important Information
- Confirm the reference number, engine model, year, drive, serial range and physical configuration before ordering.
- Do not install a pump that differs from the original in mounting, hose routing, reservoir or pulley arrangement without confirming compatibility.
- This is an aftermarket replacement, not an OEM component.
- Use the correct fluid and follow the applicable service procedure. Professional installation is recommended for steering-system work.
About Sea Sierra
- Pro-Grade Standards — We supply marine replacement parts designed for demanding operating conditions.
- Global Fulfillment — Shipping options and delivery estimates are provided during checkout.
- Manufacturer-Direct Value — Practical replacement solutions with attention to materials and quality control.
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