What are the specs for this Piston?

The correct replacement for Goodman model GSC130483AC — 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 GSC130483AC — B1789882.

What symptoms indicate I need a new piston?

Common symptoms that indicate you need a new piston 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 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 / Flowrator Kit for GSC130483AC — B1789882

Name: OEM Goodman Piston / Flowrator Kit for GSC130483AC — B1789882
Brand: Goodman
SKU: GOODMAN-750
Price: 10.95 USD
Availability: InStock

SKU: GOODMAN-750 Brand: Goodman

$10.95 $14.78

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Texas CMBL #19328542014

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The Goodman B1789882 Piston Kit (also called a flowrator or refrigerant metering restrictor) is the genuine OEM component used to meter refrigerant flow into the indoor coil of the GSC130483AC 13 SEER air conditioner. A correctly sized piston is critical to system performance — the wrong orifice diameter causes poor cooling, high head pressure, and premature compressor wear. This factory-spec kit guarantees the exact bore your unit was engineered for.

Specifications

Part type: Fixed-orifice piston / flowrator
OEM part number: B1789882
Brand: Goodman
Compatible model: GSC130483AC (13 SEER air conditioner)
Application: Indoor coil refrigerant metering
Material: Brass orifice body

OEM vs. Generic

Our OEM Goodman B1789882 is machined to the precise orifice tolerance specified for your condenser, ensuring rated capacity and efficiency. Generic universal piston assortments require you to guess the bore size and frequently throw off the system's superheat/subcooling. For a metering device, exact-fit OEM is the safest, most reliable choice.

Installation Difficulty

Moderate — HVAC technician recommended. Replacing the piston requires recovering the refrigerant charge, opening the liquid line at the metering body, swapping the piston, then evacuating and recharging the system. EPA Section 608 certification is required to handle refrigerant. Always verify model compatibility before installation.

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 / Flowrator K...

$10.95

Frequently Asked Questions

Does this Piston fit my Goodman GSC130483AC — B1789882?

Yes. This is the factory-specified OEM piston for the Goodman GSC130483AC — 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 on my Goodman GSC130483AC — 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?

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

Is this piston 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?

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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