What are the specs for this Piston Kit?

The correct replacement for Goodman model GSC130481AE — B1789882 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 Goodman equipment which lists the model number GSC130481AE — B1789882.

What symptoms indicate I need a new piston kit?

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

Is this piston kit compatible with Bryant or Payne systems too?

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

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Goodman

OEM Goodman Piston / Restrictor Kit for GSC130481AE — B1789882

Name: OEM Goodman Piston / Restrictor Kit for GSC130481AE — B1789882
Brand: Goodman
SKU: GOODMAN-729
Price: 10.95 USD
Availability: InStock

SKU: GOODMAN-729 Brand: Goodman

$10.95 $14.78

OEM Guaranteed

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30-Day Returns

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Texas CMBL #19328542014

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Govt POs Accepted

The Goodman B1789882 Piston Kit is the genuine OEM refrigerant metering device for the GSC130481AE air conditioning system. The piston (also called a flow-rater or restrictor) meters the precise volume of liquid refrigerant entering the evaporator coil, creating the pressure drop that enables proper heat absorption. A correctly sized piston is critical to capacity, efficiency, and compressor protection — the wrong orifice causes flooding or starvation of the coil.

Specifications

Part Number: B1789882
Fits Model: GSC130481AE (13 SEER condenser)
Type: Piston / restrictor (fixed-orifice metering device)
Brand: Goodman (OEM)
Application: Refrigerant flow control
Equipment Type: Air Conditioner / Condenser

OEM vs. Generic

This genuine Goodman OEM piston kit is bored to the exact orifice size engineered for the GSC130481AE's capacity and refrigerant charge. Generic or mismatched pistons alter superheat/subcooling and can damage the compressor. OEM guarantees the factory-specified metering for rated performance.

Install Difficulty

Advanced (Pro Required). Installation requires recovering the refrigerant, opening the liquid line at the piston housing, replacing the orifice and O-ring, evacuating, and recharging to spec — work reserved for EPA-certified technicians. Plan for full recovery/recharge service.

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 Goodman Piston / Restrictor ...

$10.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman GSC130481AE — B1789882?

Yes. This is the factory-specified OEM piston kit for the Goodman GSC130481AE — B1789882. 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 piston kit on my Goodman GSC130481AE — B1789882?

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 piston kit?

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

Is this piston kit compatible with Bryant or Payne too?

Many Goodman 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 Goodman piston kit?

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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