Jabsco 4528-0001-P Profile D Neoprene Impeller Kit

Jabsco Profile D Neoprene Impeller Kit – 4528-0001-P / 6-45280001P

Product Description

The Jabsco 4528-0001-P is a six-blade neoprene flexible impeller kit for compatible marine engine-cooling, circulation, bilge and general-purpose water pumps. It uses a bronze insert with a slotted or through-hole pin drive and is intended primarily for pumping fresh water or salt water where only limited oil or diesel contamination is present. The packaged kit includes the impeller, sealing components and installation lubricant.

Key Features

• Jabsco manufacturer part number: 4528-0001-P
• Land 'N' Sea SKU: 6-45280001P
• Impeller profile: D
• Six flexible blades
• Neoprene construction
• Bronze hub insert
• Slotted or through-hole pin drive
• Outside diameter: 1-9/16 inches / approximately 40 mm
• Width: 3/4 inch / approximately 19 mm
• Shaft diameter: 3/8 inch / approximately 9.5 mm
• Includes impeller, cover gasket, O-ring and installation lubricant
• UPC / GTIN: 671880570824

Pump Compatibility

Documented Jabsco pump applications include:

• 2760-0001
• 4530-0001
• 6640 series
• 9360 series
• 9430 series
• 9560 series
• 11260 series
• 11430 series
• 11620 series
• 11650 series
• 17120-0001
• 21130 series
• 22230 series
• 22350 series
• 22820 series
• 22830 series
• 22940 series
• 22960 series
• 29350 series

Always verify the complete pump number because some pump families were produced with different shaft sizes, impeller compounds or drive arrangements.

Engine Compatibility

Documented engine applications and equivalent OEM references include:

Volvo Penta

• MB10A
• MD1, MD1A, MD1B, MD1KDH series
• MD2BHY
• MD6A, MD6B
• MD7A, MD7B
• MD2010, MD2020

Yanmar

• 2GM20 family
• 2QM15
• Selected 2QM bilge-pump applications
• 3GM and 3GM30 families
• Selected 3QM bilge-pump applications
• SB8 and SB12 families
• YSB8 and YSB12 families
• YSE8 and YSE12
• YSM8 family

These applications should still be confirmed through the installed raw-water pump number or engine cooling-system diagram.

Fitment Notice

Before ordering, confirm that the original impeller requires:

• Six blades
• Approximately 40 mm outside diameter
• Approximately 19 mm width
• 3/8-inch shaft
• Bronze insert
• Pin-drive connection
• Neoprene construction
• Profile D configuration

Do not confuse the 4528-0001-P with the similar 22405-0001-P. Both are six-blade neoprene impellers measuring approximately 40 mm by 19 mm, but the 22405 version uses a larger 15/32-inch shaft. See also: Johnson Pump 09-808B-1 (replaces Jabsco 22405-0001) if your pump requires the larger shaft.

Compatible & Related Products

• Johnson Pump 09-806B-1 Impeller Kit – direct OEM-equivalent for F-series pump applications
• Johnson Pump 09-808B-1 (replaces Jabsco 22405-0001) – similar profile, larger 15/32-inch shaft
• Glo Blue Impeller Pin GLO-421 – replacement drive pin for pin-drive impeller pumps

When This Part Needs Replacement

Replace the impeller when:

• Raw-water flow becomes weak or intermittent
• Engine temperature begins rising
• Exhaust-water discharge decreases
• The pump becomes difficult to prime
• The blades become cracked, hardened or permanently bent
• Blade tips are torn or missing
• The bronze insert becomes loose
• The pump has operated dry
• Annual preventive maintenance is due

Jabsco recommends replacing flexible impellers at least annually, or sooner where operating duty is demanding.

Installation Notes

• Stop the engine and isolate its starting system.
• Close the raw-water seacock or applicable isolation valve.
• Remove the pump cover and old gasket.
• Pull the old impeller straight from the housing using an impeller puller or suitable pliers.
• Do not pry against the pump face with a screwdriver.
• Recover missing vane fragments from hoses, coolers and heat exchangers.
• Inspect the cover plate, cam, housing, shaft and drive pin for wear.
• Lubricate the impeller bore and blade surfaces with the supplied lubricant.
• Align the impeller slot with the shaft pin.
• Push the impeller straight into the pump body.
• Install the supplied sealing components and refit the cover.
• Reopen the seacock and confirm strong water flow after startup.

Never operate a flexible-impeller pump dry.

Alternate / Superseded Part Numbers

• Current packaged number: 4528-0001-P
• Earlier Jabsco number: 4528-0001
• Land 'N' Sea SKU: 6-45280001P
• Compact format: 45280001P
• Jabsco references: 4528-0001B, 8293-0001, 22429-0001
• Johnson Pump: 09-806B, 09-806B-1
• Sherwood: 9979 / 09979
• Perkins: 24880272 / 24990272
• Onan: 132-0859
• Volvo Penta: 803729, 833550, 875807, 875807-0, 876554-7, 3586494
• Yanmar: 104211-42070, 104211-42071
• Sierra: 18-8952
• Vetus: IMP00501
• CEF: 500100
• UPC / GTIN: 671880570824

Parts Desk Insight – Best Use

The 4528-0001-P is the standard raw-water impeller for Yanmar 2GM/3GM-series sailboat engines and Volvo Penta MD1/MD2/MD6/MD7 diesel auxiliaries — two of the most common small-boat engine families in the cruising fleet. The critical identifier is the 3/8-inch pin-drive bronze hub: several six-blade Jabsco impellers share the same 40 mm diameter and 19 mm width, so confirming shaft size and drive type is essential before ordering. Do not substitute the 22405-0001-P / 09-808B-1 — it looks nearly identical but uses a 15/32-inch shaft that will not seat correctly on a 3/8-inch pin. The Johnson Pump 09-806B-1 is the direct OEM-equivalent kit for F-series pump applications. Always recover all blade fragments from heat exchangers and oil coolers before restarting — fragment ingestion causes secondary overheating damage that is far more costly than the impeller itself.