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2812321 Seal Repair Kit – Fits Caterpillar

NC-008103 · Repair/Seal Kits

2812321 Seal Repair Kit – Fits Caterpillar

CAD 74.50

In stock

Seal Repair Kit – reference 2812321. Catalogue-listed applications: Caterpillar Boom Cylinder #2843369 (s/n DMY1-UP), Boom Cylinder #2843369 (s/n SSC1-UP; TTN1-UP), Boom Cylinder #2843369 (s/n FC21-117; GC51-UP), Boom Cylinder #5023494 (s/n FC2118-UP; GC51-UP). View photos, specifications, CAD pricing and delivery options from NorthCore.

Standard delivery: 3–7 business days. Other services and estimates are shown at checkout. Minimum online order: CAD 100 in parts, excluding shipping and tax. Add this part to your cart to calculate delivery and review your order.

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Part specifications and references

NorthCore code
NC-008103
Reference numbers
2812321
Listed package quantity
1
Product information and configuration
Quantity indicated in catalogue: 1

Replacement part: Seal Repair Kit Fits Caterpillar Models. 

Configuration: Boom Cylinder Seal Kit for Caterpillar (Cat) Mini Excavators
This aftermarket replacement boom cylinder seal kit restores hydraulic cylinder sealing performance on Caterpillar (Cat) mini excavators. The kit services the boom hydraulic cylinder and includes wiper seals, U-cup rod seals, and piston seals. Replaces OEM part number 2812321 (also formatted as 281-2321).
Specifications
Rod Diameter: 50 mm
Bore Diameter: 85 mm
Kit Contents: Wiper seal, U-cup rod seal, piston seal
Compatible Models
Caterpillar Mini Excavators:
303.5C CR -- Boom Cylinder #2737030 (all s/n), Boom Cylinder #2843369 (s/n DMY1-UP)
304D CR -- Boom Cylinder #2737031 (s/n TSR1-UP)
304E -- Boom Cylinder #2737031 (s/n SSC1-UP; TTN1-UP), Boom Cylinder #2843369 (s/n SSC1-UP; TTN1-UP)
304E2 CR -- Boom Cylinder #2737031 (s/n HC51-UP; KC41-UP), Boom Cylinder #2843369 (s/n FC21-117; GC51-UP), Boom Cylinder #5023494 (s/n FC2118-UP; GC51-UP)
Note: Serial number restrictions apply. Confirm your machine serial number and boom cylinder number before ordering.
Replaces Part Number(s):
2812321, 281-2321
Aftermarket Interchange Numbers
CA2812321, MSS341613BO, CTC-2812321
New aftermarket replacement part - not remanufactured, not used.

Reference numbers: 2812321

Catalogue-listed applications

Use these as reference information. Check the part numbers, specifications and any application restrictions against your equipment.

  • Caterpillar Boom Cylinder #2843369 (s/n DMY1-UP)
  • Caterpillar Boom Cylinder #2843369 (s/n SSC1-UP; TTN1-UP)
  • Caterpillar Boom Cylinder #2843369 (s/n FC21-117; GC51-UP)
  • Caterpillar Boom Cylinder #5023494 (s/n FC2118-UP; GC51-UP)
Application notes
  • One New Aftermarket Replacement Boom Cylinder Seal Kit for Caterpillar (Cat) Mini Excavators
  • This aftermarket replacement boom cylinder seal kit restores hydraulic cylinder sealing performance on Caterpillar (Cat) mini excavators. The kit services the boom hydraulic cylinder and includes wiper seals, U-cup rod seals, and piston seals. Replaces OEM part number 2812321 (also formatted as 281-2321).
  • 303.5C CR -- Boom Cylinder #2737030 (all s/n), Boom Cylinder #2843369 (s/n DMY1-UP)
  • 304D CR -- Boom Cylinder #2737031 (s/n TSR1-UP)
  • 304E -- Boom Cylinder #2737031 (s/n SSC1-UP; TTN1-UP), Boom Cylinder #2843369 (s/n SSC1-UP; TTN1-UP)
  • 304E2 CR -- Boom Cylinder #2737031 (s/n HC51-UP; KC41-UP), Boom Cylinder #2843369 (s/n FC21-117; GC51-UP), Boom Cylinder #5023494 (s/n FC2118-UP; GC51-UP)
  • Note: Serial number restrictions apply. Confirm your machine serial number and boom cylinder number before ordering.
  • Aftermarket Interchange Numbers
  • New aftermarket replacement part - not remanufactured, not used.

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