Volvo Penta D6 Raw Water Pump Impeller Kit 22994993

Volvo Penta D6 Raw Water Pump Impeller Kit OEM Part 22994993

Genuine OEM raw-water pump impeller service kit for Volvo Penta D6 marine diesel engines. This kit contains everything needed to restore proper seawater flow through the engine cooling circuit a critical maintenance item that protects your engine from overheating and heat-related damage.

Part Details

• OEM Part Number: 22994993
• Brand: Volvo Penta
• Product Type: Raw Water Pump Impeller Service Kit
• System: Engine raw-water / seawater cooling circuit
• Supersedes: 21951358, 22000061, 21958592, 3887761, 876771, 21422649
• Replaced By: 24139373 (later service kit view listing)
• Condition: New OEM

Kit Contents

• Raw-water pump impeller (threaded design for easier removal)
• Pump cover gasket
• Cover O-ring / sealing components
• Installation lubricant

Compatible Applications

• Volvo Penta D6 E generation
• Volvo Penta D6 F generation from serial number 2006040970 onward
• Volvo Penta D6 G generation (MY2020)
• D6 Aquamatic / sterndrive installations
• D6 IPS installations
• Selected D8 applications (verify by serial number)

Earlier D6 AD engines use impeller kit 3593573. Confirm your complete engine model and serial number before ordering.

Serial Number Fitment Notice

The fitment break for this kit is D6 E/F from serial number 2006040970 onward, and all D6 G engines. Earlier D6 AD engines require a different impeller kit. Always verify using your engine serial number plate before ordering.

When to Replace

• Cracked, missing, or permanently deformed impeller blades
• Hardened or brittle rubber
• Reduced seawater flow at the exhaust outlet
• Engine overheating or elevated coolant temperature
• After any dry-running event
• At each scheduled annual service

Service Interval

Volvo Penta specifies impeller replacement at each annual service or at the scheduled maintenance interval for your engine generation. Replace on condition if symptoms appear before the interval is due.

Installation

Before installing, inspect the pump housing bore and wear plate for scoring. Remove all fragments of a damaged impeller from the pump body and downstream cooling passages broken vane debris can lodge in the heat exchanger or thermostat housing. Lubricate the new impeller with the supplied lubricant, install the new cover gasket and O-ring, and verify normal seawater flow at the exhaust outlet after startup.

Volvo Penta specifies puller screw 3843949 for easier removal of the 22994993 impeller without damaging the pump housing.

Related Parts

• Volvo Penta Impeller Puller Screw 3843949 recommended removal tool
• Volvo Penta Impeller Kit 3593573 earlier D6 AD application
• Volvo Penta Impeller Kit 24139373 later replacement kit

Superseded / Alternate Part Numbers

• 22994993 Current OEM number
• 21951358 Previous reference
• 22000061 Previous reference
• 21958592 Previous reference
• 3887761 Previous reference
• 876771 Previous reference
• 21422649 Earlier related reference
• 24139373 Later replacement kit

Aftermarket cross-references (verify fitment independently): Sierra 18-3057, Johnson Pump 09-812B-1.

Technical FAQ

• Q: What is the difference between 22994993 and 3593573?
  A: The 3593573 fits earlier D6 AD engines. The 22994993 is specified for D6 E/F engines from serial 2006040970 onward, and all D6 G engines. They are not interchangeable confirm by serial number.
• Q: Is 24139373 a direct replacement for 22994993?
  A: 24139373 is the later superseding kit. Verify your engine generation and serial number to confirm which kit applies to your installation.
• Q: Do I need the puller screw?
  A: Volvo Penta recommends puller screw 3843949 for clean removal without housing damage. It is especially useful if the impeller has been in service for multiple seasons.
• Q: What happens if I miss an impeller replacement?
  A: A failed impeller can shed blade fragments that travel downstream and block the heat exchanger or thermostat, causing rapid overheating. Always inspect for debris when replacing a worn or damaged impeller.

Parts Desk Insights

This is one of the most frequently ordered D6 service items, and the most common ordering mistake is confusing it with the earlier 3593573 kit used on D6 AD engines. The serial number break at 2006040970 is the key if a customer is unsure, ask for the full serial number before confirming the order. Also worth noting: the threaded impeller design on 22994993 makes removal significantly easier than earlier press-fit designs, but the puller screw is still the right tool for the job after a full season of service.