Jabsco 17936-0001-P Profile Q Neoprene Impeller Kit | Large 12-Blade 3-3/4" OD | 1" Spline

Jabsco 17936-0001-P Profile Q Neoprene Impeller Kit

Part Number: 17936-0001-P (Jabsco)
Brand: Jabsco (ITT)
Official Product Type: Flexible Impeller Kit — Profile Q
System: Raw-Water (Seawater) Cooling
UPC: 671880588171

Dimensions & Specifications

• Outside Diameter: 3-3/4 in (approx. 95 mm)
• Width: 3-1/2 in (approx. 89 mm)
• Shaft / Hub Diameter: 1 in (approx. 25 mm)
• Drive: No. 7 Spline
• Blades: 12
• Material: Neoprene with brass hub insert
• Profile: Q

Kit Contents

• Flexible neoprene impeller
• Cover gasket
• Spline seal
• Installation lubricant

Compatible Pump Applications

Confirm fitment using the original impeller number or installed pump model — not engine make alone. Documented Jabsco pump applications include:

• Jabsco 17490-series
• Jabsco 50270-series
• Jabsco 52270-series
• Large-capacity bronze raw-water pumps requiring a Profile Q, 12-blade neoprene impeller with a 1-inch No. 7 spline hub

Compatible Engine Applications

Supported by cross-reference on selected raw-water pumps used with:

• Caterpillar marine diesel engines (ref. 4L8470)
• Detroit Diesel marine engines (ref. 5196168, 5198550, 8924839)
• MAN marine diesel engines (ref. 50.06506-0073)
• Perkins marine diesel engines (ref. 460027)
• Volvo Penta marine engines (ref. 875814-6, 875697, 844683, 842857)
• Yanmar marine diesel engines (ref. 165000-35270)
• Johnson Pump installations (ref. 09-814B)

Fitment must be confirmed by the installed pump number or original impeller reference. Engine make alone is not sufficient — multiple pump sizes are used across the same engine families.

Fitment Notice

Before ordering, confirm the original impeller matches all of the following:

• Profile Q configuration
• 12 blades
• 3-3/4 in (95 mm) outside diameter
• 3-1/2 in (89 mm) width
• 1 in (25 mm) No. 7 spline-drive hub
• Brass hub insert
• Neoprene material

This is a substantially larger impeller than Profile Y models such as the Jabsco 17937-0001-P Profile Y Impeller Kit and the Jabsco 17935-0001-P Profile Q Impeller Kit (shorter 63.5 mm width). Confirm all three dimensions before ordering.

For MAN applications, verify whether MAN 51.96501-0580 (a separate engine-specific O-ring) is required — it may not be included with the impeller kit.

Cross-Reference Part Numbers

• Jabsco: 17936-0001-P, 17936-0001
• Johnson Pump: 09-814B
• Caterpillar: 4L8470
• Detroit Diesel: 5196168, 05196168, 5198550, 05198550, 8924839, 08924839
• MAN: 50.06506-0073, 50.06506.0073
• Perkins: 460027
• Vetus: IMP00801
• Volvo Penta: 875814-6, 875697, 844683, 842857
• Yanmar: 165000-35270

When to Replace

Replace the impeller when:

• Raw-water or exhaust-water discharge has decreased noticeably
• Engine operating temperature has begun rising
• The pump is difficult to prime
• Blades are cracked, hardened, permanently folded, or torn
• Blade tips are missing — inspect all downstream coolers and passages for debris before restarting
• The brass spline hub is loose or damaged
• The pump has run dry or overheated
• Annual cooling-system service is due

Service Interval

Jabsco recommends replacing flexible impellers at least annually, or more frequently in high-duty or demanding operating conditions. Inspect at every seasonal service and replace proactively rather than waiting for performance loss.

Installation Notes

• Stop the engine and isolate the starting circuit
• Close the raw-water intake seacock
• Remove the pump end cover and old sealing components
• Use a proper impeller-removal tool to grip the hub — do not pry against the housing
• Retrieve any missing blade fragments from hoses, coolers, and heat exchangers before reassembly
• Inspect the pump bore, cam, shaft, splines, and cover plate for wear or damage
• Lubricate the replacement impeller with the included lubricant before installation
• Carefully align the brass spline hub with the pump shaft
• Install the supplied spline seal and cover gasket
• Reopen the seacock and verify strong water flow at the exhaust outlet immediately after startup

Related Parts

• Jabsco 17936-0001-P Flexible Raw Water Pump Service Kit — same impeller available in alternate kit packaging
• Jabsco 17935-0001-P Profile Q Neoprene Impeller Kit — Profile Q, same 95 mm diameter but shorter 63.5 mm width
• Jabsco 17937-0001-P Profile Y Neoprene Impeller Kit — smaller Profile Y variant (65 mm OD); confirm dimensions before substituting

Parts Desk Insight

Best use case: The 17936-0001-P is the go-to annual impeller for heavy-duty commercial and high-output marine diesel installations using Jabsco 17490, 50270, or 52270-series bronze pumps. Its size — 95 mm diameter by 89 mm wide — puts it in the large-pump category, so it appears across a wide range of big-displacement diesel brands from Caterpillar to Detroit Diesel to Volvo Penta. Replacing it on schedule is far less costly than the overheating damage a failed impeller can cause.

Common issues: The most frequent ordering mistake is selecting this impeller based on engine brand alone. Multiple pump sizes and impeller profiles are used across Caterpillar, Detroit, and Volvo Penta engine families — always confirm with the installed pump number or original impeller part number. The other common confusion is between this 89 mm-wide Profile Q and the shorter 17935-0001-P (63.5 mm wide) or the smaller-diameter 17937-0001-P Profile Y. All three dimensions — diameter, width, and hub size — must match.