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Parts knowledge center

Make the right parts decision before the machine stops

Source-backed buying and maintenance guides for identifying parts, planning service and preparing technically complete quote requests.

9 in-depth guides4 focused topicsReviewed against manufacturer documentation
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03

Part Numbers & Sourcing

Identify the correct item, handle superseded numbers and prepare a quote request that can be checked before shipment.

View guides ↓04

Planned Maintenance

Understand filters, separators, service kits and fluids without treating a generic interval as a machine-specific schedule.

View guides ↓01

Compressor Core Components

Practical guidance for high-value components such as the screw element, with emphasis on diagnosis before ordering.

View guides ↓01

Controls & Electrical

Procurement-focused guidance for matching controller hardware and planning a qualified replacement.

View guides ↓
Atlas Copco spare parts prepared for part-number verification

Atlas Copco Part Number Supersession: How to Confirm the Current Replacement

A practical workflow for old, replaced or superseded Atlas Copco part numbers: what to verify, what evidence to request and how to avoid an incorrect substitution.

  • A supersession is a documented number change; it is not the same as a generic cross-reference or visually similar substitute.
  • Ask for the old-to-new number chain, serial-range applicability and any companion parts or installation instructions.
  • Keep the supplier's written confirmation with the purchase record so the next reorder starts from verified information.
7 min readUpdated August 4, 2026
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Parts sourcing

Part Numbers & Sourcing

Identify the correct item, handle superseded numbers and prepare a quote request that can be checked before shipment.

Parts sourcing7 min read

How to Identify a Genuine Atlas Copco Part by Its Part Number

Learn how to record an Atlas Copco part number, verify the machine and label evidence, check authenticity and handle a superseded number before ordering.

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Parts sourcing6 min read

How to Buy Genuine Atlas Copco Parts from China: A Buyer's Guide

How to source genuine Atlas Copco parts from China — how to verify they're original, how quoting and trade terms work, and what to check in a supplier before you order.

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Maintenance

Planned Maintenance

Understand filters, separators, service kits and fluids without treating a generic interval as a machine-specific schedule.

Maintenance6 min read

Atlas Copco GA Service Kit Guide: What to Replace and When

How to match an Atlas Copco GA service kit to the exact machine, serial range and maintenance event, confirm contents and prepare for a planned service stop.

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Maintenance6 min read

Air Filter vs Oil Filter vs Oil Separator: What Each One Does

What the air filter, oil filter and oil separator each do in an oil-injected screw compressor, how their symptoms differ and what to verify before ordering.

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Maintenance6 min read

Atlas Copco Compressor Oil Guide: PAROIL Types and Which One You Need

How to confirm the correct Atlas Copco compressor lubricant, account for machine and operating conditions, avoid unsafe mixing and plan a controlled changeover.

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Maintenance7 min read

Atlas Copco Oil Separator Troubleshooting: Oil Carryover, Pressure Drop and Selection

Diagnose oil carryover or separator pressure-drop concerns before ordering an Atlas Copco replacement. Includes a safe inspection and quote checklist.

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Compressor health

Compressor Core Components

Practical guidance for high-value components such as the screw element, with emphasis on diagnosis before ordering.

Compressor health6 min read

Atlas Copco Airend Guide: What It Is, When to Exchange or Overhaul

What an Atlas Copco airend does, which symptoms justify diagnosis, how exchange and overhaul differ, and what to confirm before ordering an element.

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Controls

Controls & Electrical

Procurement-focused guidance for matching controller hardware and planning a qualified replacement.

Controls7 min read

Atlas Copco Elektronikon Controller Replacement: What to Confirm Before You Buy

A procurement-focused checklist for Atlas Copco Elektronikon controller replacement: labels, machine serial data, I/O, display, software and commissioning scope.

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How we publish

Useful enough to act on. Careful enough to verify.

Machine-specific first. We do not turn one model’s interval or fitment into a universal rule.

Sources visible. Technical guides identify the manufacturer material used for review.

Commercially transparent. Product links lead to quote pages; final fitment still requires verification.

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