What are the specs for this Piston Kit?

The correct replacement for Goodman model ASZ130361AE — 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 ASZ130361AE — 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 Piston / Metering Kit for ASZ130361AE — B1789868

Name: OEM Goodman Piston / Metering Kit for ASZ130361AE — B1789868
Brand: Goodman
SKU: GOODMAN-16243
Price: 5.95 USD
Availability: InStock

SKU: GOODMAN-16243 Brand: Goodman

$5.95 $7.95

OEM Guaranteed

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Texas CMBL #19328542014

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Govt POs Accepted

The Goodman B1789868 Piston Kit is the genuine OEM refrigerant metering device (flowrator/orifice) matched to the ASZ130361AE 3-ton 13-SEER R-410A heat pump. The piston's precision-bored orifice sets the refrigerant flow rate into the indoor coil, which is essential for correct superheat/subcooling, rated capacity, and efficiency. Using the factory-specified bore size is critical to proper system charge and performance.

Specifications

Part number: B1789868
Component: Refrigerant piston / flowrator metering orifice kit
Refrigerant: R-410A
Application: Indoor coil metering for 3-ton ASZ13 heat pump
Fits: Goodman ASZ130361AE and matched air handler / coil combinations

OEM vs. Generic

The OEM B1789868 is bored to Goodman's exact orifice diameter for this tonnage and refrigerant. An incorrect or generic piston size will over- or under-feed the coil, causing poor cooling, iced coils, or compressor stress. Always confirm the bore size stamped on the piston matches the unit's rating plate.

Installation Difficulty: Professional (EPA certification required)

This is not a DIY part — replacing a piston requires opening the sealed refrigerant circuit. A licensed HVAC technician must recover the R-410A, replace the piston at the metering fitting, evacuate the system, and recharge to spec. EPA Section 608 certification is legally required to handle refrigerant.

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 / Metering Ki...

$5.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman ASZ130361AE — B1789868?

Yes. This is the factory-specified OEM piston kit for the Goodman ASZ130361AE — 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 ASZ130361AE — 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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