What are the specs for this Compressor?

The correct replacement for Lennox model OEM Lennox Scroll Compressor 51,500 BTUH 460V R-410A — 12Y43 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Lennox equipment which lists the model number OEM Lennox Scroll Compressor 51,500 BTUH 460V R-410A — 12Y43.

What symptoms indicate I need a new compressor?

Common symptoms that indicate you need a new compressor include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

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Lennox

OEM Lennox Scroll Compressor 51,500 BTUH 460V R-410A — 12Y43

Name: OEM Lennox Scroll Compressor 51,500 BTUH 460V R-410A — 12Y43
Brand: Lennox
SKU: LNX-12Y43
Price: 389.95 USD
Availability: InStock

SKU: LNX-12Y43 Brand: Lennox

$389.95 $529.95

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The OEM Lennox 12Y43 is an Interlink ABA051WAA scroll compressor rated at 51,500 BTUH, 460V, R-410A, 3-phase operation. This compressor is the core component of your Lennox outdoor unit, compressing and circulating refrigerant to move heat out of the conditioned space. It is built as a direct factory replacement, matching the capacity, voltage, and refrigerant profile of your original Lennox compressor.

Common failure symptoms: the unit runs continuously without cooling, unusual mechanical noise, breakers tripping on startup, short-cycling, high amp draw, or a compressor that hums but fails to start. Internal overload trips and locked-rotor conditions are common signs a scroll compressor has reached the end of its service life.

Why OEM matters: Genuine Lennox compressors are matched to the system's metering, oil type, and electrical protection. Choosing the authentic 12Y43 ensures correct refrigerant displacement, rated efficiency, and seamless integration with Lennox safety controls — protecting your investment and avoiding the premature failures often seen with generic replacements. Confirm voltage and application before installing.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Lennox Scroll Compressor 51,...

$389.95

Frequently Asked Questions

Does this Compressor fit my Lennox OEM Lennox Scroll Compressor 51,500 BTUH 460V R-410A — 12Y43?

Yes. This is the factory-specified OEM compressor for the Lennox OEM Lennox Scroll Compressor 51,500 BTUH 460V R-410A — 12Y43. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the compressor on my Lennox OEM Lennox Scroll Compressor 51,500 BTUH 460V R-410A — 12Y43?

Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.

What symptoms mean I need a new compressor?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this compressor compatible with Bryant or Payne too?

Many Lennox parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Lennox compressor?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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OEM Lennox Scroll Compressor 51,500 BTUH 460V R-410A — 12Y43

Shipping Information

Return Policy

Frequently Asked Questions