What are the specs for this Piston Kit?

The correct replacement for Goodman model ASZ130361AC — B1789868 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 ASZ130361AC — B1789868.

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 Refrigerant Piston Kit for ASZ130361AC — B1789868

Name: OEM Goodman Refrigerant Piston Kit for ASZ130361AC — B1789868
Brand: Goodman
SKU: GOODMAN-16233
Price: 5.95 USD
Availability: InStock

SKU: GOODMAN-16233 Brand: Goodman

$5.95 $7.95

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Goodman B1789868 Refrigerant Piston Kit

The B1789868 is the genuine OEM refrigerant metering piston (flowrator) kit for the Goodman ASZ130361AC heat pump. This precision-machined orifice sits in the liquid line and meters refrigerant into the coil at the exact rate the ASZ130361AC's tonnage and refrigerant charge require. A worn, wrong-sized, or debris-clogged piston causes poor subcooling/superheat, weak capacity, and compressor stress — making the correct piston essential to system performance.

Specifications

Part number: B1789868
Fits: Goodman ASZ130361AC heat pump
Type: Fixed-orifice metering piston (flowrator)
Bore: Factory-matched orifice for unit tonnage/charge
Includes: Piston and O-ring seal
Category: Metering device / piston

OEM vs. Generic

Piston performance lives entirely in the orifice diameter. The genuine Goodman B1789868 carries the precise bore Goodman engineered for the ASZ130361AC, so refrigerant flow, superheat, and subcooling land on-spec. A generic piston with an approximate bore can leave the system over- or under-fed and hurt efficiency. For a few dollars, the OEM piston protects a much more expensive compressor.

Installation Difficulty

Advanced (5/5). Replacement requires recovering refrigerant, opening the sealed refrigerant circuit, swapping the piston and O-ring, evacuating, and recharging to spec. This is EPA Section 608 certified work and must be performed by a licensed HVAC technician. Do not open the refrigerant circuit without proper recovery equipment.

Correct orifice for the ASZ130361AC. Verify sizing with us at info@nationalhvacparts.com.

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 Refrigerant Piston K...

$5.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman ASZ130361AC — B1789868?

Yes. This is the factory-specified OEM piston kit for the Goodman ASZ130361AC — B1789868. 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 ASZ130361AC — B1789868?

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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