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Case 521D Wheel Loader Filters

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Case 521D Wheel Loader Filters parts list
Image Fits Model Description Part # Price Product Details
Air Filter for Case CX130B–CX180B Excavators AF25957 See Details CX130B, CX160B, CX180B, 521D, 521E, 110A, 120A, 125A, 140A, MXU100, MXU110, MXU130 Air Filter 303912A1
$81.00
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Inner engine air filter for Case machines 187472A1 See Details CX130B, CX160B, CX180B, 850G, 850H, 1150G, 1150H, 521D, 521E, 621C, Farmall 110A, 120A, 125A, 140A, MXU100, MXU110, MXU130, MX100, MX110, MX120, MX130, MX135, MX140, MX150, MX170 Secondary Air Filter (for 187471A1) 187472A1
$59.00
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Case engine oil filter 87803261 for 580N and 590 Super N backhoe loaders with Iveco NEF engine See Details 570MXT S3, 580M, 580SM S2/S3, 580N/SN/SR, 590SM S2/S3, 590SN/SR/ST, 695SM/ST, 430-465, 445CT, 450CT, 850K II, 1150K, 1650L, 1850K, 521D/E, 621D, 721D/E/F, 821E/F, 921F, WX95-210 II, 865B, 885B, TX742, Magnum 180-225, 1150M, 1650M, 2050M, 750K/L Engine Oil Filter (Iveco NEF – Tier 3 / Series 2-3) 87803261
$28.00
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Case Cummins 4-390 engine oil filter J908616 for 580K and 580 Super K backhoe loaders See Details 480E/F, 580E, 580SE, 580K, 580SK, 580L, 580SL, 580M S1, 580SM S1, 590 Turbo, 590SL, 590SM S1, 570LXT, 570MXT, 450C, 455C, 550-550H, 650-650K S1, 750H, 750K S1, 850K S1, 1840, 1845C, 40XT-95XT, 9010/B, 9020/B, CX130, CX160, 521D, 584E-588G, 686G Engine Oil Filter (Cummins 4-390 / 4T-390) J908616
$41.00
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Case fuel water separator J286503 for 580 Super K and 590 Turbo backhoe loaders See Details 480F, 480F LL, 580L S2 After S/N JJG0239360, 580M S1, 580SK, 580SM S1, 590 Turbo, 590SM S1, 570MXT, 450C, 455C, 1850K S3, 521D Before S/N JEE0135500, 621B, 686G, 688G, 585G-588G, 460-860, 845, 865B, 885, 885B, 9030B, CX130, CX160, 1838, 1840, 1845C Fuel/Water Separator (Single-Filter Cummins / 1850K S3) J286503
$35.00
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Case fuel water separator filter replacement See Details 430, 440, 440CT, 445CT, 450, 450CT, 465, 650K II, 650K III, 850K II, 521D, 621D, WX95 II, WX145 II, WX165 II, TX742, TX842, 580M S2, 580SM S2, 590SM S2, 570MXT S3, 750K, 420, 430 Series 3, 435, 445, 420CT Series 3 Fuel/Water Pre-Filter (Iveco Tier 2/3 – FS19773) 87803194
$37.00
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Fuel/Water Separator Filter for Case Equipment See Details 480E, 480F, 580K, 580L, 580SE, 580SK, 590 Turbo, 680K, 680L, 780C, 780D, 450B, 450C, 455C, 550, 550E, 550G, 550H, 650G, 650H, 750H, 750K, 850, 850D, 850E, 850G, 850H, 855D, 855E, 1150E, 1150G, 1150H, 1155E, 1550, 1650K, 1850K, 688, 88, 650, 850K, 721 Fuel/Water Separator – Primary (Dual-Filter Cummins) J930942
$26.00
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In-Line Fuel Filter for Case Backhoes, Dozers, Skid Steers, Loaders, Excavators & Trenchers See Details 580K-I, 1650K, 1850K, 1818, 1825B, 40XT, 60XT, 70XT, 85XT, 90XT, 95XT, 440CT, 445, 445CT, 450CT, 521D, 621D, 721, 721B, 721D, 821, 821B, W11, 688, 688C, 888, 1088, 1288, 1288C, 1488, 9010B, 9020B, 9030, 9030B, 9040, 9040B, 9045B, 460, 560, 660, 960 Inline Fuel Filter (FF5079 / P550974) D139225
$15.00
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Fuel filter 194199A1 for Case backhoes See Details 570LXT, 570MXT, 580L*, 580 Super L*, 590 Super L*, 580M, 580 Super M, 590 Super M, 584E, 585E, 586G, 588G, 40XT, 60XT, 70XT, 300, 621B, 621C, 621D, 721, 721B, 721C, 721D, 821B, 821C, 821E XR, 444, 444J, 444K, 544, 544J, 544K, 624J, 624K, 644J, 644K Inline Fuel Filter (P551770 / FF5289) 194199A1
$17.00
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Hydraulic spin-on filter for Case 1150E dozer P165659 See Details 1085C, 1150D, 1155D, 1150E, 1150G, 1150H, 1155E, 1450B, 1455B, 521D, 521DXT, 612DXT, 621D, 921, 921C, W14B, W14C, WX150 Transmission / Hydraulic Filter, Spin-On (HF6046 / BT8874) N9086
$188.00
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Hydraulic Spin-On Filter for Case 521D–921C Wheel Loaders See Details 521D, 621D, 721C, 821C, 921C Hydraulic Spin-On Filter 332202A1
$124.00
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Replacement engine oil filters, fuel/water separators, air filters, and hydraulic spin-on filters for the Case 521D wheel loader, covering full engine and hydraulic maintenance for this compact wheel loader.

Fits Models At A Glance

  • 521 Series: 521D, 521DXT

Key Notes

  • Engine Filtration: Oil filters for Cummins and Iveco engine configurations.
  • Fuel System: Fuel/water separators and in-line fuel filters to protect injection components.
  • Air Intake: Inner and outer engine air filters for reliable dust protection.
  • Hydraulic: Spin-on hydraulic filters covering multiple 521D build variants.

Why Choose Broken Tractor

  • ✅ Filters matched to correct Case 521D engine builds
  • ✅ Fast shipping from two US warehouses
  • ✅ Knowledgeable support for Case wheel loader parts

Frequently Asked Questions

Which oil filter fits a Case 521D with a Cummins engine versus an Iveco engine?

Broken Tractor carries both. The Case Cummins Engine Oil Filter (SKU J908616) and the Iveco-configured Engine Oil Filter (SKU 87803261) both list the 521D in their fitment, so match the filter to your engine build. If you are unsure which engine your loader has, confirm the part number with our parts team before ordering.

What hydraulic filter does a Case 521D wheel loader use?

We offer two spin-on hydraulic filters that fit the 521D. The Hydraulic Spin-On Filter (SKU 332202A1) covers the 521D through 921C loaders, and the Hydraulic Filter Spin-On (SKU N9086) also lists the 521D and 521DXT. Match the part number to your machine to be sure you get the correct build variant.

Does the Case 521D use an inner and outer air filter?

Yes, the 521D takes both an inner and outer engine air filter for dust protection. Broken Tractor carries the Inner Engine Air Filter (SKU 187472A1) and the outer Air Filter (SKU 303912A1), both of which list the 521D in their fitment.

Which fuel/water separator fits the Case 521D?

We carry more than one fuel/water separator that fits the 521D, including SKU 87803194 and the spin-on SKU J286503. Because 521D coverage can depend on your specific build, match the part number to your machine or confirm the correct separator with our parts team.

Does the Case 521DXT use the same filters as the 521D?

Several 521D filters also list the 521DXT, including the Hydraulic Filter Spin-On (SKU N9086). Fitment can vary by engine and build, so confirm the part number matches your 521DXT before ordering. You can reach the parts team at (800) 909-7060 for help.

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Product: Category: Case 521D Wheel Loader Filters Brand: Head Title: Case 521D Wheel Loader Filters | Broken Tractor