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Hydraulic Double Vane Pump, No. 2 outlet 135° CCW from inlet, 4.12 cu in/rev Front, 2.80 cu in/rev Rear, 2-Bolt SAE B Mounting Flange, 13T SAE B Splined Shaft, SAE 4-Bolt Flange, Inlet 2-1/2, Outlets 1 Front 3/4 Rear, CCW Rotation

Application Power Steering, Industrial small units and small press etc.	Configuration 33	Brand DANFOSS POWER SOLUTIONS II LLC (VICKERS)	Brand Danfoss Power Solutions	Pack Size 1.00	UOM EA	Features Longer operating life\|Oustanding volumetric efficiency\|Built for high-pressure, high-speed applications	Front Displacement 4.12	Mfg. Name Vickers	Mount 2-Bolt SAE B	Mount 2-Bolt SAE B	Ports SAE 4-Bolt Flange, Inlet 2-1/2, Outlets 1 Front 3/4 Rear	Ports SAE 4-Bolt Flange, Inlet 2-1/2, Outlets 1 Front 3/4 Rear	Rear Displacement 2.80	Rotation CCW	Seal Material Buna-N	Series 2520VQ	Shaft 13T SAE B Splined	Shaft 13T SAE B Splined	Supplier Part Number 428649-5	Alternate Part Numbers Alternate Part Number 2520VQ21A1411AA20LH, Alternate Part Number C1MJ97	Product Weight 45.00 lbs

Product Questions & Answers 3

Product Questions & Answers

Got a 2520VQ series setup I'm trying to match up a replacement for. This one's the 428649-5 with the 4.12 up front and 2.80 in the rear, CCW rotation. That all line up with what y'all carry?

Question by: Darryl T on Jan 18, 2026, 3:24 PM

Yeah, that lines up exactly. SKU 428649-5 is the 2520VQ series double vane pump with 4.12 cu in/rev front displacement and 2.80 cu in/rev rear, running counter-clockwise rotation. The shaft is a 13T SAE B splined, and it mounts on a 2-bolt SAE B flange. Ports are SAE 4-bolt flange with a 2-1/2 inch inlet, 1 inch front outlet, and 3/4 inch rear outlet. If those specs match what came off your machine, this is the right unit.

Answer by: Customer Support on Jan 19, 2026, 6:47 PM

trying to match up a double pump, what are the front and rear displacements on this one?

Question by: Melvin K on May 28, 2025, 4:39 PM

For the double configuration, the front section is 4.12 cu in/rev and the rear section is 2.80 cu in/rev.

Answer by: Customer Support on May 30, 2025, 6:52 AM

Will this double vane pump work for power steering applications on smaller units?

Question by: Howard C on Apr 3, 2025, 7:24 PM

Yes, this hydraulic double vane pump is engineered specifically for power steering applications, as well as industrial small units and small press applications.

Answer by: Customer Support on Apr 5, 2025, 4:51 PM

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