What are the specs for this Piston Kit?

The correct replacement for Goodman model GMPV075-3 Furnace — B1789859 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 GMPV075-3 Furnace — B1789859.

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 for GMPV075-3 Furnace — B1789859

Name: OEM Goodman Piston Kit for GMPV075-3 Furnace — B1789859
Brand: Goodman
SKU: GOODMAN-12135
Price: 9.95 USD
Availability: InStock

SKU: GOODMAN-12135 Brand: Goodman

$9.95 $12.95

OEM Guaranteed

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30-Day Returns

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Texas CMBL #19328542014

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The Goodman B1789859 Piston Kit is a genuine OEM replacement designed for the GMPV075-3 gas furnace. The piston (also called the orifice or spud) meters the flow of gas into the burner assembly, and its precise bore size is what sets the correct firing rate and BTU output for your furnace. A worn, sooted, or incorrectly sized piston causes lazy flames, delayed ignition, and poor combustion efficiency.

Using the factory-specified B1789859 kit guarantees the orifice diameter matches your unit's original design specification, keeping the furnace burning clean, safe, and to rated capacity.

Specifications

OEM Part Number: B1789859
Part Type: Piston / Orifice Kit
Compatible Model: Goodman GMPV075-3
Equipment: Gas Furnace
Material: Machined brass orifice
Fit: Direct OEM replacement

OEM vs. Generic

Choose the OEM B1789859 for a factory-calibrated bore that preserves your furnace's rated BTU output and safe combustion. Generic aftermarket orifices may vary in drill size or thread pitch, which can throw off the gas/air mixture. For a safety-critical fuel component like this, OEM is strongly recommended.

Installation Difficulty

Moderate — requires shutting off gas, removing the burner assembly, and swapping the orifice. A licensed HVAC technician should verify manifold pressure and flame after 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 Kit for GMPV0...

$9.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman GMPV075-3 Furnace — B1789859?

Yes. This is the factory-specified OEM piston kit for the Goodman GMPV075-3 Furnace — B1789859. 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 GMPV075-3 Furnace — B1789859?

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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