What are the specs for this Piston?

The correct replacement for Goodman model ASZ130361AG — 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 ASZ130361AG — B1789868.

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.

IMAGE COMING SOON

Goodman

OEM Goodman Piston Kit for ASZ130361AG — B1789868

Name: OEM Goodman Piston Kit for ASZ130361AG — B1789868
Brand: Goodman
SKU: GOODMAN-16247
Price: 5.95 USD
Availability: InStock

SKU: GOODMAN-16247 Brand: Goodman

$5.95 $7.95

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

The Goodman B1789868 Piston Kit is a genuine OEM refrigerant metering device (flowrator) sized for the ASZ130361AG heat pump. The piston meters liquid refrigerant into the coil at the precise rate the system was designed for, ensuring correct superheat, subcooling, and rated capacity.

Specifications

Part Number: B1789868
Type: Fixed-orifice piston / flowrator
Function: Refrigerant metering device
Fits Model: ASZ130361AG (3-ton heat pump)
Compatible Refrigerant: R-410A systems
Includes: Piston and seal for the metering port

OEM vs. Generic

Piston bore size is critical — even a few thousandths of an inch off changes the refrigerant flow and throws off system charge, hurting efficiency and comfort. The genuine OEM B1789868 is bored to Goodman's exact specification for the ASZ130361AG, eliminating the guesswork of matching a universal piston chart. For a low-cost part that directly controls system performance, OEM is the safe choice.

Installation Difficulty: Advanced

Replacing a piston requires opening the sealed refrigerant circuit. This is a job for an EPA 608–certified technician: the system must be recovered, the connection opened, the old piston removed, the new one seated with a fresh seal, and the system evacuated and recharged to spec. Do not attempt without proper recovery equipment and certification.

Keep your Goodman heat pump metering refrigerant exactly as engineered with this genuine OEM piston kit.

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 for ASZ13...

$5.95

Frequently Asked Questions

Does this Piston fit my Goodman ASZ130361AG — B1789868?

Yes. This is the factory-specified OEM piston for the Goodman ASZ130361AG — 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 on my Goodman ASZ130361AG — 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?

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.

Menu