Hydraulic Gear Pump for Case 310G, 450, 450C, 455, 550 & 580 Backhoes/Dozers – D48950
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- Case 310G crawler / loader — matching 13-spline hydraulic pump
- Case 450 / 450B / 450C dozers — matching pump
- Case 455 / 455B / 455C dozers — matching pump
- Case 550 dozer — matching pump
- Case 480B / 480C backhoes — matching pump
- Case 580B / 580C backhoes — matching pump
- Case 530CK / 580CK — matching pump
Fitment Note: Confirm D48950 interchange, 13-spline shaft, rotation, 5.75-inch mounting centers and port positions. Do not assume every Case 580 or 450 has the same pump.
Product Overview
A worn hydraulic pump can cause sluggish loader or backhoe movement, reduced working pressure and inconsistent operation, although these symptoms can also come from valves, filters or low oil.
The hydraulic system must be diagnosed before replacing the pump. Multiple Case pump versions exist, including variations in shaft and port arrangement.
Key Features & Performance
- Pump Style: Hydraulic gear pump
- Input Shaft: 13 splines, per replacement catalog
- Advertised Displacement: 3.523 cu in/rev
- Mounting Centers: 5.75 inches, per replacement catalog
Specifications
- Product: hydraulic gear pump
- Pump Style: Hydraulic gear pump
- Input Shaft: 13 splines, per replacement catalog
- Advertised Displacement: 3.523 cu in/rev
- Mounting Centers: 5.75 inches, per replacement catalog
- Northline Parts SKU: NLT2P01606
Part Numbers & Cross-References
- D48950
- D41390
- D53690
- D49241
- D80083
What Is Included
One aftermarket hydraulic gear pump; coupling, hoses and adapters are not confirmed included.
Installation & Fitment Notes
Prime and fill the replacement according to the machine’s hydraulic service procedure. Keep hoses and ports clean and never check hydraulic leaks with bare hands.
Frequently Asked Questions
Is this an OEM part?
No. This is an aftermarket replacement. The original part numbers, when shown, are used to check compatibility.
How do I check fitment?
Confirm D48950 interchange, 13-spline shaft, rotation, 5.75-inch mounting centers and port positions. Do not assume every Case 580 or 450 has the same pump.
Part Summary
Part: hydraulic gear pump
Applications: Case 310G crawler / loader — matching 13-spline hydraulic pump; Case 450 / 450B / 450C dozers — matching pump; Case 455 / 455B / 455C dozers — matching pump; Case 550 dozer — matching pump; Case 480B / 480C backhoes — matching pump; Case 580B / 580C backhoes — matching pump; Case 530CK / 580CK — matching pump
Part Number(s): D48950, D41390, D53690, D49241, D80083
Purpose: A worn hydraulic pump can cause sluggish loader or backhoe movement, reduced working pressure and inconsistent operation, although these symptoms can also come from valves, filters or low oil.
Northline Parts SKU: NLT2P01606
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