MasterCraft 5096821 Johnson 09-849P-2 High Flow Ballast Impeller Kit FastFill

MasterCraft 5096821 Johnson High Flow Ballast Pump Impeller Kit – FastFill 30 GPM

Restore reliable ballast filling and draining with the MasterCraft 5096821 Johnson High Flow Ballast Pump Impeller Kit, an OEM replacement designed for MasterCraft boats equipped with the Johnson Talulah High Flow Reversible Ballast Pump and FastFill ballast system.

This replacement impeller is specifically designed for the larger 30 GPM Johnson high-flow ballast pump, commonly found in select MasterCraft XT and X-Series wakeboard and wakesurf boats equipped with the FastFill option.

Unlike standard Johnson ballast impellers, the high-flow impeller has a larger, deeper design to accommodate the increased water-moving capacity of the high-flow pump.

Whether your ballast tanks are filling slowly, draining inconsistently, or you're performing preventive maintenance, replacing a worn impeller can help restore dependable ballast system performance.

Important: This impeller is for Johnson High Flow 30 GPM ballast pumps only. If your boat has a standard Johnson Talulah or Ultra Ballast pump, see our Johnson 09-824P-2 Orange Ballast Pump Impeller instead.

Product Features & Benefits

• Genuine MasterCraft OEM Replacement: MasterCraft part #5096821 for compatible factory FastFill ballast systems.
• Johnson Talulah High Flow Compatibility: Designed for the larger Johnson high-flow reversible ballast pump.
• 30 GPM Pump Application: Intended for high-flow pumps capable of moving approximately 30 gallons per minute under rated conditions.
• Reversible Pump Operation: Supports ballast tank filling and draining.
• Large High-Flow Impeller Design: Larger dimensions than standard Johnson ballast pump impellers.
• Replacement Maintenance Component: Helps restore water flow when a worn or damaged impeller is causing reduced pump performance.
• MasterCraft FastFill Application: Used on select MasterCraft XT and X-Series boats equipped with the optional high-flow ballast system.

Product Specifications

• Brand: MasterCraft
• MasterCraft OEM Part Number: 5096821
• Product Type: High Flow Ballast Pump Impeller Kit
• Pump Manufacturer: Johnson Pump / SPX FLOW
• Compatible Pump Family: Johnson F45-12 Talulah High Flow
• Johnson Impeller Reference: 09-849P-2
• Ballast System: MasterCraft FastFill
• Pump Flow Rating: 30 GPM
• Impeller Depth (Front to Back): 1-3/4 inches
• Impeller Diameter (Left to Right): 2 inches
• Center Hub Width (Left to Right): 1-1/16 inches
• Pump Operation: Reversible fill and drain
• Barcode / GTIN: 7330717016654
• Application: Compatible MasterCraft high-flow ballast systems

Fitment Tip: Before ordering, compare your existing impeller's diameter, depth, and center hub configuration with these measurements. Dimensions alone do not guarantee compatibility; always verify your pump model.

What's Included in the MasterCraft 5096821 Kit?

The MasterCraft high-flow ballast impeller kit is listed by marine parts suppliers as including:

• 1 Johnson High Flow replacement ballast pump impeller
• Replacement O-ring
• Impeller lubricant
• Installation instructions

Package contents may vary with manufacturer packaging revisions. Confirm the contents of your supplied kit before beginning installation.

High Flow vs. Standard Johnson Ballast Pump Impellers

MasterCraft boats may use different ballast pumps depending on the boat's model, year, and factory equipment.

Johnson High Flow – 30 GPM

• MasterCraft OEM impeller kit #5096821
• Johnson Talulah High Flow F45-12 pump family
• Larger impeller measuring 2 inches in diameter and 1-3/4 inches deep
• Used in compatible MasterCraft FastFill ballast systems
• Designed for the larger high-flow pump housing

Johnson Standard Flow – Approximately 13.5–13.7 GPM

• Johnson 09-824P-2 standard-flow impeller family
• Johnson Talulah / Ultra Ballast F4B pump family
• Smaller impeller measuring approximately 2 inches in diameter and 7/8 inch deep
• Used in compatible standard-flow ballast pumps
• Not interchangeable with the larger high-flow impeller

Do you have a standard Johnson ballast pump instead of FastFill?

Shop our Johnson 09-824P-2 Orange Ultra Ballast Pump Impeller Service Kit.

Have a Jabsco Ballast Puppy pump?

Shop our Jabsco 6303-0007 Premium Green Ballast Pump Impeller.

Important: Always confirm your pump manufacturer and model before ordering. The high-flow, standard Johnson, and Jabsco impellers are not universally interchangeable.

MasterCraft FastFill Ballast System Compatibility

MasterCraft Part #5096821 is designed for compatible Johnson Talulah High Flow 30 GPM reversible ballast pumps.

These pumps are used in select MasterCraft XT and X-Series boats equipped with the optional FastFill ballast system.

Compatibility is determined by the actual ballast pump installed in your boat, not simply the model or year.

Before purchasing, verify:

• Your boat has the MasterCraft FastFill high-flow ballast system.
• The installed pump is a Johnson Talulah High Flow model.
• The existing impeller matches the high-flow dimensions.
• The pump identification or original part number confirms compatibility.

Not all MasterCraft boats use high-flow ballast pumps. Some boats use standard Johnson pumps, Jabsco Ballast Puppy pumps, or other ballast pump configurations.

If you are unsure which system your boat has, contact Bakes Online with your boat's model, year, and a photo of the ballast pump identification label.

Why Replace Your MasterCraft Ballast Pump Impeller?

The ballast pump impeller is a wear component that creates suction and moves water through the ballast system.

Over time, repeated use, dry running, debris, and normal wear can damage or deform the impeller vanes.

Common symptoms of a worn ballast pump impeller include:

• Ballast tanks taking longer than normal to fill.
• Slow or incomplete ballast tank draining.
• Pump motor running without moving sufficient water.
• Inconsistent ballast fill and drain performance.
• Reduced water flow from the ballast pump.
• Visible cracking, worn vanes, or deformation of the impeller.
• Difficulty priming the ballast pump.

Replacing a worn impeller can restore pump performance when impeller deterioration is the cause of the problem.

Recommended Ballast Pump Impeller Maintenance

Inspect your MasterCraft ballast pump impellers during regular seasonal maintenance and whenever you experience reduced ballast performance.

Some MasterCraft maintenance schedules specify ballast impeller replacement every 100 operating hours or annually. Follow the schedule applicable to your boat's model year and ballast system.

For best results:

• Inspect impellers during annual boat maintenance.
• Replace impellers showing visible wear or damage.
• Avoid unnecessary dry running of ballast pumps.
• Check for debris or restrictions in ballast intake and discharge lines.
• Inspect the pump housing and cover for wear or damage.
• Verify that ballast tanks fill and drain properly after service.

Regular inspection helps identify impeller problems before they interrupt your time on the water.

MasterCraft Ballast Pump Impeller Replacement Tips

1. Turn off the ballast system and isolate electrical power according to the manufacturer's service instructions.
2. Locate the Johnson high-flow ballast pump and verify its identification.
3. Remove the pump cover using the appropriate tools.
4. Carefully remove the existing impeller.
5. Inspect the pump housing for debris, wear, and damage.
6. Compare the new impeller dimensions and center hub configuration with the original.
7. Apply the appropriate impeller lubricant according to the supplied instructions.
8. Install the replacement impeller following the manufacturer's procedure.
9. Reinstall the pump cover and secure the hardware to the specified requirements.
10. Test the ballast system in the water and check for proper filling, draining, and leaks.

Important: Do not run the pump dry during testing. Follow the applicable MasterCraft and Johnson Pump service procedures. If you're unfamiliar with servicing reversible ballast pumps, consult a qualified marine technician.

Troubleshooting Slow MasterCraft Ballast Fill or Drain Times

If your MasterCraft ballast system is filling or draining slowly, a worn impeller is one possible cause, but other problems can produce similar symptoms.

Pump runs but moves little or no water:

• Inspect the impeller for damage.
• Check for restricted hoses or blocked intake screens.
• Verify that the ballast system valves are operating correctly.
• Check for air leaks or priming problems.
• Pump does not turn on:
• Inspect the appropriate fuse or circuit protection.
• Check electrical connections and pump wiring.
• Verify that the ballast control system is functioning.
• Inspect the pump motor and associated controls.

Pump fills but does not drain properly:

• Inspect the impeller and pump housing.
• Check for blocked discharge lines.
• Verify that the pump is reversing correctly.
• Inspect ballast system valves and plumbing.

Replacing the impeller is an appropriate maintenance step when the existing impeller is worn, but it will not correct every ballast system problem.

Frequently Asked Questions

What does MasterCraft part #5096821 fit?

MasterCraft 5096821 is an OEM high-flow ballast pump impeller kit for compatible Johnson Talulah High Flow 30 GPM reversible pumps used in MasterCraft FastFill ballast systems.

What are the dimensions of the MasterCraft 5096821 impeller?

The impeller measures 1-3/4 inches deep from front to back and 2 inches across from left to right. The center hub measures 1-1/16 inches across from left to right.

What is the Johnson part number for the high-flow ballast impeller?

Johnson's marine catalog identifies impeller #09-849P-2 for the F45-12 Talulah High Flow ballast pump family. MasterCraft offers its corresponding OEM high-flow service kit under part #5096821.

What is the difference between the Johnson high-flow and standard ballast impellers?

The high-flow impeller is designed for the larger 30 GPM Johnson Talulah High Flow pump. Standard Johnson Talulah and Ultra Ballast pumps use a smaller impeller designed for approximately 13.5–13.7 GPM pump applications.

Can I use the orange Johnson 09-824P-2 impeller in my MasterCraft FastFill pump?

No. The standard Johnson orange impeller is not a replacement for the larger 30 GPM high-flow impeller. If your boat has a standard-flow pump, shop our Johnson Orange Ballast Pump Impeller.

Does this impeller fit a Jabsco Ballast Puppy pump?

No. Jabsco ballast pumps use different impellers. See our Jabsco Premium Green Ballast Pump Impeller for compatible Jabsco applications.

Does this kit include a complete ballast pump?

No. This is an impeller replacement kit, not a complete pump assembly. For compatible complete pump replacement options, see our MasterCraft Johnson High Flow Reversible Ballast Pump.

Why is my MasterCraft FastFill ballast system filling slowly?

A worn impeller can reduce pump efficiency. Other causes may include blocked intake screens, restricted plumbing, malfunctioning valves, electrical issues, or pump damage.

How often should I replace my MasterCraft ballast pump impeller?

Inspect the impeller regularly and follow the maintenance schedule for your specific MasterCraft model and year. Replace worn or damaged impellers and inspect sooner if ballast performance decreases.

Is this the same as a MasterCraft engine raw water impeller?

No. This impeller is used in the ballast pump to fill and drain ballast tanks. It is not an engine cooling system impeller.

Related MasterCraft Ballast Parts

• Johnson 09-824P-2 Orange Ultra Ballast Pump Impeller – For compatible standard-flow Johnson ballast pumps, not 30 GPM high-flow pumps.
• Jabsco 6303-0007 Premium Green Ballast Pump Impeller – Replacement impeller for compatible Jabsco Ballast Puppy pumps.
• MasterCraft Johnson High Flow Reversible Ballast Pump – Complete high-flow pump assembly for compatible MasterCraft applications.
• Boat Ballast Pump Impellers & Service Kits – Browse replacement ballast impellers and maintenance kits.
• Johnson Marine Pumps & Impellers – Shop Johnson ballast pumps, impellers, and replacement parts.

Shop MasterCraft Ballast Parts at Bakes Online

Bakes Online specializes in marine replacement parts, ballast system components, and maintenance supplies for inboard ski, wakeboard, and wakesurf boats.

Proudly serving the watersports community since 1989, our experienced team understands the importance of keeping your MasterCraft ballast system operating properly.

Whether you're replacing a worn Johnson high-flow ballast impeller, servicing a standard Johnson pump, or replacing an entire ballast pump assembly, Bakes Online can help you identify the correct replacement parts.

Need help confirming compatibility? Contact the Bakes Online Parts Team with your MasterCraft boat model, year, and ballast pump information before ordering.