Part number lookup

178-6578 Replacement Parts

Cross-reference and compare 5 replacement listings for OEM / aftermarket part number 178-6578. Use the product cards below to review price, availability, and fitment before ordering.

5 Matching Products

Arm Cylinder Seal Kit 2590631 For Caterpillar CAT 320CLCaterpillarArm Cylinder Seal Kit 2590631 For Caterpillar CAT 320CL$136.42Boom Cylinder Seal Kit 137-3763 for Caterpillar CAT 320C Engine 3066CaterpillarBoom Cylinder Seal Kit 137-3763 for Caterpillar CAT 320C Engine 3066$108.59Boom Cylinder Seal Kit 2478996 For Caterpillar CAT 320CLCaterpillarBoom Cylinder Seal Kit 2478996 For Caterpillar CAT 320CL$108.05Engine Fan-Suction 178-6578 for Caterpillar CAT 320C 319C 318C Excavator 3066 EngineCaterpillarEngine Fan-Suction 178-6578 for Caterpillar CAT 320C 319C 318C Excavator 3066 Engine$269.92Hydraulic Main Pump 173-3381 for Caterpillar CAT Excavator 320C 320C L 320C LN 320C S Engine 3066CaterpillarHydraulic Main Pump 173-3381 for Caterpillar CAT Excavator 320C 320C L 320C LN 320C S Engine 3066$26,573.57

Part Numbers and Cross References

2590631CA2590631AMC00001-UPGNG00001-UPMAB00001-UPHBC00001-UPMAC00001-UPCLM00001-UPBKM00001-UPCA1589092158-9092CA1373763137-3763BDC00001-UPBPR00001-UPBGB00001-UPCA2478996247-8996178-6578CA1786578BBL00001-UPJPL00001-UPCA1733381173-3381SAH00001-UPAP12S

Applications and Fitment Summary

  • Part Number
  • Caterpillar CAT 320CL Arm Cylinder Seal Kit 2590631
  • Caterpillar · s: 320C & 320C L Excavators AMC00001-UP (MACHINE) POWERED BY 3066 Engine 320C & 320C L Excavators GNG00001-UP (MACHINE) POWERED BY 3066 Engine 320C & 320C L Excavators MAB00001-UP (MACHINE) POWERED BY 3066 Engine 320C Excavators HBC00001-UP (MACHINE) POWERED BY 3066 Engine 320C U & 320C LU Excavators MAC00001-UP (MACHINE) POWERED BY 3066 Engine 320C U 320C LU Excavators CLM00001-UP (MACHINE) POWERED BY 3066 Engine 322C & 322C L Excavators BKM00001-UP (MACHINE) POWERED BY 3126 Engine 322C & 322C L Excavators DAA00001-UP (MACHINE) POWERED BY 3126 Engine
  • Caterpillar CAT 320CL Boom Cylinder Seal Kit 2478996
  • Caterpillar · s: 320C & 320C L Excavators AMC00001-UP (MACHINE) POWERED BY 3066 Engine 320C & 320C L Excavators GNG00001-UP (MACHINE) POWERED BY 3066 Engine 320C & 320C L Excavators MAB00001-UP (MACHINE) POWERED BY 3066 Engine 320C Excavators HBC00001-UP (MACHINE) POWERED BY 3066 Engine 320C U & 320C LU Excavators MAC00001-UP (MACHINE) POWERED BY 3066 Engine 320C U 320C LU Excavators CLM00001-UP (MACHINE) POWERED BY 3066 Engine
  • Caterpillar CAT 320C 319C 318C Excavator 3066 Engine Fan-Suction 178-6578
  • Caterpillar · s:for Caterpillar CAT Excavator 320C 320C L 320C LN 320C S Engine 3066

Frequently Asked Questions

What parts replace OEM number 178-6578?

This page lists 5 replacement listings indexed under 178-6578. Compare cross references, applications, and pricing before ordering.

How do I confirm fitment for 178-6578?

Match the stamped part number first, then verify machine model, engine code, serial number, mounting points, and photos of your old part before checkout.

Can I request a quote if 178-6578 is not an exact match?

Yes. Use the fitment inquiry form with your machine plate, engine model, and photos. Support can review alternatives or cross references.

Confirm fitment

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