Contents
Product Overview
The C146 Compressor Head 161671490 Air End is a premium replacement component designed for Atlas Copco GA series oil-injected rotary screw compressors. Engineered for durability and efficiency, this air end delivers consistent airflow, reduced energy consumption, and extended service life, making it ideal for industrial and manufacturing applications.

Unlike generic alternatives, the C146 features precision-machined rotors with Atlas Copco’s patented asymmetric profile, ensuring optimal compression efficiency. Its robust construction withstands high temperatures, heavy-duty cycles, and harsh environments, minimizing downtime and maintenance costs.
Key Features & Benefits
✔ High Efficiency – The advanced rotor design reduces internal leakage, converting over 90% of input energy into compressed air.
✔ Durable Construction – High-grade bearings and corrosion-resistant materials ensure 50,000+ operating hours with proper maintenance.
✔ Smooth Operation – Precision-balanced rotors reduce vibration, lowering noise and wear.
✔ Compatibility – Direct replacement for Atlas Copco GA30-GA160 compressors, ensuring seamless integration.
✔ Lower Maintenance Costs – Optimized lubrication and heat dissipation extend oil and filter life.
Real User Experience
“We replaced our old air end with the C146 six months ago, and the difference is night and day. Our compressor runs 15% cooler, and we’ve seen a 12% drop in energy costs. The air delivery is more consistent, and we haven’t had any unexpected shutdowns. Installation was straightforward, and it’s been running flawlessly in our metal fabrication shop. Highly recommended!”
– James R., Plant Manager, Texas, USA

FAQs
1. Is the C146 air end compatible with my Atlas Copco GA75 compressor?
Yes, the C146 (161671490) is designed for GA30-GA160 models, including the GA75. Always verify your compressor’s serial number before ordering.
2. How often should I service the C146 air end?
For optimal performance, conduct oil and filter changes every 2,000 hours and a full bearing inspection every 20,000 hours.
3. Can I use non-genuine oil with this air end?
No. Always use Atlas Copco original lubricants to prevent premature wear and maintain warranty coverage.
4. What’s the expected lifespan of the C146 air end?
With proper maintenance, it lasts 50,000+ hours, making it a long-term investment.
5. Does this unit come with a warranty?
Yes, the C146 air end includes a 12-month warranty against manufacturing defects.

More Parts List
| Part Number | Part Name | Part-Number |
| 6970064693 | GASKET | 6970-0646-93 |
| 6970059095 | GASKET | 6970-0590-95 |
| 6970058225 | GASKET | 6970-0582-25 |
| 6970057742 | GASKET | 6970-0577-42 |
| 6970057391 | GASKET | 6970-0573-91 |
| 6970057381 | GASKET | 6970-0573-81 |
| 6970054935 | GASKET | 6970-0549-35 |
| 6970053798 | GASKET | 6970-0537-98 |
| 6970053727 | GASKET | 6970-0537-27 |
| 6970053715 | GASKET | 6970-0537-15 |
| 6970052537 | GASKET | 6970-0525-37 |
| 6970052536 | GASKET | 6970-0525-36 |
| 6970052532 | GASKET | 6970-0525-32 |
| 6970052138 | GASKET | 6970-0521-38 |
| 6970052137 | GASKET | 6970-0521-37 |
| 6970052089 | GASKET | 6970-0520-89 |
| 6970052082 | GASKET | 6970-0520-82 |
| 6970052078 | GASKET | 6970-0520-78 |
| 6970052062 | GASKET | 6970-0520-62 |
| 6953853810 | CRANKSHAFT | 6953-8538-10 |
| 6953853809 | SHIELD-BEARING | 6953-8538-09 |
| 6953852849 | V BELT | 6953-8528-49 |
| 6953852841 | V BELT | 6953-8528-41 |
| 6953852795 | SPACER | 6953-8527-95 |
| 6953852352 | HOUSING | 6953-8523-52 |
| 6953852351 | HOUSING | 6953-8523-51 |
| 6953852340 | PACKING | 6953-8523-40 |
| 6953852321 | SPACER | 6953-8523-21 |
| 6953852298 | GASKET | 6953-8522-98 |
| 6953851908 | CRANKSHAFT | 6953-8519-08 |
| 6953850830 | PISTON RING | 6953-8508-30 |
| 6953850399 | ROD | 6953-8503-99 |
| 6953850374 | CYLINDER | 6953-8503-74 |
| 6953850226 | HEAD-CYLINDER | 6953-8502-26 |
| 6953849490 | TANK-SEPARATOR | 6953-8494-90 |
| 6953849353 | SEPARATOR-MOISTURE | 6953-8493-53 |
| 6953848633 | HOUSING-BEARING | 6953-8486-33 |
| 6953848601 | CYLINDER | 6953-8486-01 |
| 6953847950 | PISTON | 6953-8479-50 |
| 6953847855 | PISTON HEAD | 6953-8478-55 |
| 6953847746 | PISTON | 6953-8477-46 |
| 6953847528 | PISTON | 6953-8475-28 |
| 6953847118 | SHIELD-BEARING | 6953-8471-18 |
| 6953847117 | SHIELD-BEARING | 6953-8471-17 |
| 6953846935 | RING-GUIDE | 6953-8469-35 |
| 6953846901 | RING-SEAL | 6953-8469-01 |
| 6953846900 | RING-SEAL | 6953-8469-00 |
| 6953846686 | COUTERWEIGHT | 6953-8466-86 |
| 6953846635 | RING | 6953-8466-35 |
| 6953846610 | INTERPIECE | 6953-8466-10 |




















James R –
Highly recommended!
We replaced our old air end with the C146 six months ago, and the difference is night and day. Our compressor runs 15% cooler, and we’ve seen a 12% drop in energy costs. The air delivery is more consistent, and we haven’t had any unexpected shutdowns. Installation was straightforward, and it’s been running flawlessly in our metal fabrication shop.