Power Steering Pump - Fits MerCruiser, Volvo Penta, OMC 4.3L-5.7L (Replaces 16792A39, 3863130, 3888323)

Power Steering Pump – Fits MerCruiser, Volvo Penta, OMC 4.3L-5.7L (Replaces 16792A39, 3863130, 3888323)

This power steering pump is designed for use with a range of MerCruiser, Volvo Penta, and OMC sterndrive engines. It is compatible with MerCruiser 4.3L V6, 5.0L V8, 5.7L V8, and select 7.4L V8 engines for Alpha and Bravo sterndrives. It also fits Volvo Penta 4.3L, 5.0L, and 5.7L gasoline engine models and various OMC 4.3L, 5.0L, and 5.7L V6/V8 engine packages.

This unit serves as a direct replacement for MerCruiser part numbers 16792A39, 16792A1, and 16792A33; Volvo Penta numbers 3863130 and 3888323; OMC numbers 71317A1, 90507A3, and 7830247; and Sierra 18-7508.

• Installation: Direct replacement design for straightforward installation.
• Compatibility Note: Designed for systems where the high-pressure line uses an O-ring seal and the return hose connects to the bottom of the reservoir.
• Package Includes: 1 x Power Steering Pump with Reservoir.

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. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

For Volvo Penta models, confirm your engine model/year in the table below.

For OMC models, confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Power Steering Pump (Replaces OEM #16792A39, 3863130, 3888323)

Installation Guide

1. Disconnect Battery: Always disconnect the negative battery terminal before beginning work.
2. Position Drain Pan: Place a suitable drain pan underneath the power steering pump to catch fluid.
3. Remove Belt: Loosen the tensioner and remove the serpentine belt from the pump's pulley.
4. Disconnect Hoses: Carefully disconnect the high-pressure and low-pressure (return) lines from the pump. Be prepared for fluid to drain.
5. Unbolt Pump: Remove the mounting bolts that secure the power steering pump to the engine bracket.
6. Remove Old Pump: Lift the old pump away from the engine. You may need to transfer the pulley to the new pump if it is not included.
7. Install New Pump: Position the new pump and secure it with the mounting bolts, tightening to manufacturer-specified torque.
8. Reconnect Hoses: Connect the high-pressure and return lines to the new pump, ensuring any O-rings or seals are properly installed.
9. Reinstall Belt: Route the serpentine belt correctly over the pulleys and apply the proper tension.
10. Fill Reservoir: Fill the pump reservoir with new, manufacturer-recommended power steering fluid. Do not overfill.
11. Bleed the System: Reconnect the battery. Start the engine and slowly turn the steering wheel from lock to lock several times to bleed air from the system.
12. Final Check: Turn off the engine, re-check the fluid level, and inspect for any leaks. Top off fluid if necessary.

Troubleshooting & FAQ

Q: How do I confirm this pump fits my specific engine model?

A: Check the Part Number Cross-Reference and Compatible Engine Models tables on this page. It is critical to verify that your system uses an O-ring seal for the high-pressure line and that the return line connects to the bottom of the reservoir, as fitment depends on these features.

Q: What are the signs my power steering pump is failing?

A: Common symptoms include a whining or groaning noise that changes with engine RPM, difficulty steering, or visible fluid leaks from the pump body or connections.

Q: Is this an OEM part?

A: This is an aftermarket power steering pump designed to meet or exceed OEM specifications for fit and function. It is a direct replacement for the listed MerCruiser, Volvo Penta, and OMC part numbers.

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?

• 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.