What are the specs for this Piston Kit?

The correct replacement for Goodman model GSC130483AF — 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 GSC130483AF — 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 Kit (Flowrator) for GSC130483AF — B1789882

Name: OEM Goodman Piston Kit (Flowrator) for GSC130483AF — B1789882
Brand: Goodman
SKU: GOODMAN-768
Price: 10.95 USD
Availability: InStock

SKU: GOODMAN-768 Brand: Goodman

$10.95 $14.78

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The Goodman B1789882 Piston Kit (flowrator) is the genuine OEM refrigerant metering device matched to the GSC130483AF condensing unit and compatible GSC13-series air conditioners. The piston meters refrigerant flow into the evaporator coil at the precise orifice size the system was designed around. Using the correct piston is critical: an oversized or undersized orifice causes poor cooling, flooding, frozen coils, or compressor damage. This kit restores factory-specified refrigerant metering.

The piston is machined to Goodman's exact bore specification and comes ready to install into the liquid-line connection during a coil or system service.

Specifications

Part Type: Refrigerant metering piston / flowrator
OEM Part Number: B1789882
Fits Model: GSC130483AF (and compatible GSC13 units)
Function: Fixed-orifice refrigerant metering
Brand: Goodman (OEM)

OEM vs. Generic

The genuine Goodman OEM piston is bored to the exact size charted for this unit's capacity and refrigerant. Generic pistons may be close but not exact, and an incorrect orifice directly degrades efficiency and risks the compressor. For a metering device, matching the OEM specification is non-negotiable.

Installation

Difficulty: Advanced — professional only. Replacing the piston requires opening the sealed refrigerant circuit. A licensed HVAC technician must recover the refrigerant, replace the piston, evacuate the lines, and recharge to spec. EPA Section 608 certification is required to handle refrigerant. This is not a DIY part.

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 Kit (Flowrato...

$10.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman GSC130483AF — B1789882?

Yes. This is the factory-specified OEM piston kit for the Goodman GSC130483AF — 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 GSC130483AF — 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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