Jabsco 17018-0001-P Profile M Neoprene Impeller Kit | 2-9/16 in. × 3 in. Spline Hub

Jabsco 17018-0001-P Profile M Neoprene Impeller Kit

Part Number: 17018-0001-P (Jabsco)  |  Brand: Jabsco  |  UPC: 671880588133

The Jabsco 17018-0001-P is a large-format Profile M flexible impeller kit for compatible marine diesel engine raw-water cooling and water-transfer pumps. Its defining characteristic is an unusually wide proportion: 2-9/16 in. / approx. 65 mm outside diameter with a full 3 in. / approx. 76 mm width and a 5/8 in. spline-drive brass hub. This combination of dimensions and hub type is the primary identification check before ordering.

Documented OEM cross-references include Caterpillar 3N5895 and multiple Volvo Penta diesel references, making this a primary service impeller for mid-to-large commercial and high-output recreational diesel installations.

Specifications

• Manufacturer Part Number: 17018-0001-P
• Brand: Jabsco
• Product Type: Flexible Impeller Kit — Profile M, Neoprene
• Impeller Profile: M
• Blades: 8
• Compound: Neoprene — for fresh water, salt water, and engine-cooling circuits
• Hub: Brass insert, spline drive
• Outside Diameter: 2-9/16 in. / approx. 65 mm
• Width: 3 in. / approx. 76 mm
• Shaft Diameter: 5/8 in. / approx. 16 mm
• Compatible Pump Series: Jabsco 21890, 23340, 29700
• System: Engine raw-water cooling pump / water-transfer pump
• UPC: 671880588133

Kit Contents

• 1 × Jabsco Profile M neoprene impeller (17018-0001-P)
• Pump cover O-ring
• Cover gasket
• Installation lubricant

Compatible Applications

Fitment is determined by installed pump model, engine serial number, and existing OEM impeller reference — not engine brand alone. Confirmed applications include:

• Jabsco 21890-series raw-water pumps
• Jabsco 23340-series raw-water pumps
• Jabsco 29700-series raw-water pumps
• Caterpillar marine diesel applications specifying OEM impeller 3N5895
• Volvo Penta D6 engine-cooling pump applications specifying one of the OEM refs below
• Volvo Penta D9 engine-cooling pump applications specifying one of the OEM refs below
• Selected large MerCruiser diesel engine-cooling pump applications

Fitment Notice

Before ordering, confirm all of the following match your pump's existing impeller:

• 8 blades
• Outside diameter: approx. 2-9/16 in. / 65 mm
• Width: 3 in. / 76 mm — the full 3 in. width is the critical differentiator from other 65 mm Jabsco profiles
• Shaft: 5/8 in. spline drive (not single-flat)
• Brass hub insert
• Profile M configuration
• Neoprene compound
• Jabsco reference: 17018-0001-P

Service Interval

Inspect the impeller at each annual cooling-system service. Replace immediately when any of the following are observed:

• Reduced or absent raw-water flow at the exhaust outlet
• Rising engine coolant or raw-water temperature
• Pump fails to prime or primes slowly
• Blades cracked, hardened, permanently folded, or torn
• Blade tips missing — inspect all downstream hoses, coolers, and heat exchangers before fitting the new impeller
• Spline hub loose, damaged, or worn
• Pump run without adequate water supply (replace immediately)
• Annual preventive service interval reached

Jabsco recommends annual impeller replacement as a minimum. In high-duty commercial diesel service, twice-yearly inspection is prudent.

Installation Notes

• Stop the engine and isolate the starting circuit before beginning service
• Close the raw-water intake seacock
• Remove the pump cover and old gasket and O-ring
• Use an impeller puller or firm grip with channel-lock pliers on the hub — do not pry against the pump face or housing
• Inspect the pump bore, cam surface, shaft splines, and cover plate for wear or scoring
• Recover all missing blade fragments from hoses, heat exchanger cores, and aftercoolers before proceeding
• Apply the included installation lubricant to the impeller blades and pump bore
• Align the spline hub carefully with the pump shaft and press the impeller fully into the bore
• Install the new gasket and O-ring from the kit
• Reopen the seacock and verify strong water flow at the exhaust immediately after startup

Do not allow the pump to run dry. Neoprene impellers in large-format pumps can overheat and fail within seconds without water flow, and blade fragments in a large diesel cooling circuit are difficult to locate and remove.

Cross-Reference Part Numbers

• Jabsco: 17018-0001-P
• Earlier Jabsco ref: 17018-0001
• Caterpillar: 3N5895
• Volvo Penta: 21730348
• Volvo Penta: 3583602
• Volvo Penta: 3593573
• Volvo Penta: 3817587
• Volvo Penta: 3819486
• JMP: 7446-01
• UPC: 671880588133

Related Products

• Jabsco 6-186730001P Replacement Neoprene Impeller — Profile I — similar large-format neoprene impeller, different profile
• Sierra 18-3306 Johnson Pump F6 / Jabsco Impeller Repair Kit — aftermarket alternative kit
• Jabsco 6-186730003P Replacement Nitrile Impeller — Profile G — nitrile compound option for oil/fuel-exposed circuits

Parts Desk Insights

Best use case: The 17018-0001-P is the standard annual-service impeller for Volvo Penta D6 and D9 diesel cooling pumps and Caterpillar marine diesel installations referencing OEM number 3N5895 or the Volvo Penta refs above. It's the correct choice for any high-output diesel installation running a Jabsco 21890, 23340, or 29700 series pump where only one impeller size and profile fits.

Common issues: The most frequent ordering error is confusing this impeller with other large-format Jabsco profiles that share a similar diameter but differ in width or hub type. The 3-inch width and 5/8-inch spline hub are the two details that rule out most other impellers — confirm both before ordering. On larger commercial diesel engines, missing blade fragments are particularly hazardous: a single fragment lodged in an aftercooler or heat exchanger core can restrict flow enough to cause overheating on the next run. Always perform a thorough downstream inspection after removing a worn or damaged impeller.