What Impeller Does My Ilmor Engine Use? MasterCraft Impeller Guide

Trying to find the correct raw water pump impeller for your Ilmor-powered MasterCraft? The correct replacement impeller depends on your Ilmor engine model, model year, cooling system, and raw water pump configuration.

Ilmor uses several different impeller kits, including PV06764, PV06765, 50H-0170, and 51A-0191. While these parts perform the same basic function, they are not universally interchangeable.

At Bakes Online, we specialize in genuine marine engine parts for inboard ski, wakeboard, and wakesurf boats. We've put together this guide to help MasterCraft owners identify the correct Ilmor impeller and avoid ordering the wrong replacement.

Quick Reference: Ilmor Impeller Part Number Chart

Ilmor Engine / Application	Impeller Part Number	Notes
5.7L open-cooled engines	PV06764	Confirmed in Ilmor 5.7L open-cooled service kit
Select older 6.0L and 6.2L open-cooled engines	PV06764	Verify model year and pump configuration
Select closed-cooled engines	PV06765	Verify exact engine application
7.4L and select MPI-S engines	PV06765	Listed in Ilmor 7.4L and MPI-S service kits
5.3L and 6.2L GDI engines	50H-0170	Listed in Ilmor GDI service kits
2020+ 6.0L MPI engines	50H-0170	Confirmed in Ilmor 2020-current service kit
Supercharged 6.2L application	51A-0191	Ilmor-designated Supercharged 6.2L kit

Important: This chart is a starting point, not a complete fitment guarantee. Always confirm the engine model, serial number, and raw water pump before purchasing.

Shop Ilmor Marine Engine Parts

Ilmor PV06764 – Raw Water Pump Impeller Kit

Best starting point for: Select older open-cooled Ilmor engines, including 5.7L applications.

The Genuine Ilmor PV06764 Raw Water Pump Impeller Kit is designed to maintain proper cooling water circulation in compatible Ilmor marine engines.

Kit includes:

• (1) Raw water pump impeller
• (1) Replacement O-ring

This impeller is commonly associated with earlier Ilmor marine engines, including the 5.7L open-cooled configuration.

OEM Part Number: PV06764

Fitment Reminder: Not all 6.0L or 6.2L engines use PV06764. Confirm your cooling system and model year.

Ilmor PV06765 – Raw Water Pump Impeller Kit

Best starting point for: Select closed-cooled Ilmor engines, 7.4L applications, and certain MPI-S engines.

The Genuine Ilmor PV06765 Raw Water Pump Impeller Kit is used in compatible Ilmor marine cooling systems. Unlike PV06764, this kit includes both a gasket and an O-ring.

Kit includes:

• (1) Raw water pump impeller
• (1) Replacement gasket
• (1) Replacement O-ring

Ilmor identifies PV06765 in service kits for its 7.4L inboard and MPI-S applications.

OEM Part Number: PV06765

Fitment Reminder: Closed cooling alone does not guarantee compatibility. Always verify the engine and pump configuration.

Ilmor 50H-0170 – Raw Water Pump Impeller Kit

Best starting point for: Select Ilmor GDI engines and 2020 and newer 6.0L MPI applications.

The Genuine Ilmor 50H-0170 Raw Water Pump Impeller Kit is designed for compatible Ilmor raw water pumps, including applications used in MasterCraft boats.

Common applications include:

• Ilmor 5.3L GDI
• Ilmor 6.2L GDI
• Ilmor 6.0L MPI, 2020 and newer

Kit includes:

• (1) Raw water pump impeller
• (1) Replacement O-ring

OEM Part Number: 50H-0170

Is there an alternative to Ilmor 50H-0170?

Bakes Online also offers the Sherwood X15000 Impeller with O-Ring, listed for Ilmor 50H-0170 applications.

Shop Sherwood X15000 Impeller with O-Ring

We also offer an impeller-only version for customers who do not need the complete kit:

Shop Sherwood X15000 Impeller Only

Important: The impeller-only version does not include the replacement O-ring.

Ilmor 51A-0191 – Supercharged 6.2L Impeller Kit

Best starting point for: Ilmor Supercharged 6.2L marine engine applications.

The Ilmor 51A-0191 is a factory-designated impeller kit for the Supercharged 6.2L marine engine.

OEM Part Number: 51A-0191

Engine Application: Ilmor Supercharged 6.2L

Fitment Reminder: Do not assume this impeller fits naturally aspirated 6.2L GDI or MPI engines. Confirm your exact engine and cooling system before ordering.

Frequently Asked Questions: MasterCraft Ilmor Impellers

What impeller does my MasterCraft boat use?

The correct impeller depends on the engine installed in your MasterCraft, not just the boat model. Ilmor engines use different raw water pump impellers depending on engine family, year, and cooling system. Common OEM part numbers include PV06764, PV06765, 50H-0170, and 51A-0191.

What impeller does my Ilmor 5.7L engine use?

Select Ilmor 5.7L open-cooled engines use the PV06764 raw water pump impeller kit. Some closed-cooled configurations use different components, so confirm the cooling system and engine serial number before ordering.

What impeller does my Ilmor 6.0L engine use?

The correct impeller depends on the model year and engine configuration. Ilmor identifies 50H-0170 in its 2020-and-newer 6.0L MPI annual service kit. Earlier 6.0L engines may use PV06764 or another kit depending on their cooling configuration.

What impeller does my Ilmor 6.2L engine use?

Ilmor 6.2L engines do not all use the same impeller. Select GDI applications use 50H-0170, while Ilmor lists 51A-0191 for its Supercharged 6.2L application. Other 6.2L configurations may require a different kit.

What impeller does my Ilmor 7.4L engine use?

Ilmor identifies PV06765 in its 7.4L inboard annual service kit. Confirm compatibility with your engine serial number before purchasing.

What is the difference between Ilmor PV06764 and PV06765?

Both are genuine Ilmor raw water pump impeller kits, but they serve different engine and cooling system applications.

PV06764 includes an impeller and O-ring, while PV06765 includes an impeller, gasket, and O-ring. These parts should not be considered interchangeable without confirming manufacturer fitment.

Is Ilmor 50H-0170 the same as PV06764?

No. They are different OEM part numbers used in different Ilmor engine and pump configurations. The 50H-0170 kit is used in select GDI and newer 6.0L MPI applications, while PV06764 is associated with older open-cooled applications.

How do I identify which Ilmor engine is in my MasterCraft?

Start by locating your boat's model year and identifying the engine model. Open the engine compartment and look for Ilmor engine identification markings or a serial-number label.

For GDI engines, the engine cover may need to be removed to see the engine designation.

You should confirm:

• Boat model year
• Ilmor engine model and displacement
• Engine serial number
• Open-cooled or closed-cooled configuration
• Raw water pump model, if needed

If you're uncertain, contact a knowledgeable marine parts specialist before ordering.

How often should I replace my Ilmor raw water pump impeller?

Inspect your impeller regularly and follow the replacement interval specified in your Ilmor owner's manual. Many boat owners include impeller inspection or replacement in their annual maintenance routine.

Replacement may be needed sooner if the engine has been operated without adequate water, has overheated, or shows signs of reduced cooling water flow.

What are the symptoms of a bad Ilmor impeller?

Common warning signs include:

• Engine temperature running higher than normal
• Overheating alarms
• Reduced cooling water circulation
• Cracked, hardened, or missing impeller vanes
• Visible deterioration during inspection

These symptoms can also be caused by other cooling system problems. Inspect the complete cooling system when diagnosing an overheating issue.

Can I use an aftermarket impeller in my Ilmor engine?

Some aftermarket impellers are available for specific Ilmor raw water pump applications. Always verify the pump and engine fitment rather than matching an aftermarket impeller by appearance alone.

For example, Bakes Online carries the Sherwood X15000 Impeller with O-Ring for applications listed under Ilmor 50H-0170.

Does the raw water pump impeller cool the engine?

Yes. The raw water pump moves lake or seawater through the engine's cooling circuit or heat exchanger, depending on the cooling system design.

A damaged impeller can restrict water flow and contribute to overheating, potentially causing expensive engine damage.

Shop MasterCraft Ilmor Impellers & Engine Parts

At Bakes Online, we specialize in marine engine maintenance and replacement parts for inboard ski, wakeboard, and wakesurf boats.

Whether you're servicing an older MasterCraft with an Ilmor 5.7L engine or a newer boat with a GDI or supercharged engine, choosing the correct raw water pump impeller is essential.

Helpful shopping links:

• Shop All Ilmor Marine Engine Parts
• Shop Marine Engine Impellers
• Shop Sherwood X15000 Impeller with O-Ring
• Shop Sherwood X15000 Impeller Only
• Contact Bakes Online for Parts Assistance

Not sure which impeller fits your MasterCraft?

Contact our team with your boat year, Ilmor engine model, and engine serial number. We'll help you identify the correct replacement before you order.

Bakes Online – Your Leader in Watersports Since 1989.