AMETEK Lamb 122557-00 Vacuum Motor for MD Central Vacuum – Part# 199BX
- Product SKU: 199BX
- Category: Central Vacuum Parts & Accessories, MD Central Vacuum Attachment Kit
- Order within
Quick Summary
This 240 volt Lamb vacuum motor is a replacement motor used in some central vacuum brands and models, including select MD central vacuum systems. It is a brand new original motor and includes a wire set with spades for connection to the motor.
Available from Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.
Quick Highlights
- Lamb 122557-00 original motor
- 240 volt motor
- 2 fan stages
- Includes wire set with spades
- Fits MD M575H2 (240V)
- May be marked 2557 or 12-2557
Product Overview
The 122557-00 vacuum motor is a replacement motor for certain central vacuum units, including the MD M575H2 (240V). This is a new Lamb Ametek original motor, not a rebuilt motor.
It includes a wire set with spade connectors to attach to the motor. The other end is recommended to be spliced to the old wire using wire nuts.
Common signs that replacement may be needed include a mini breaker popping, electrical smell, excessive blue sparks from the motor top, a click without startup, or a motor that shuts down and works again later.
Key Features
- Original replacement motor: This is a brand new Lamb Ametek original motor, not a rebuilt unit.
- 240 volt operation: Designed as a 240 volt vacuum motor replacement.
- Wire set included: Includes a wire set with spades to connect to the motor.
- Fits select MD systems: Listed for use with the MD M575H2 (240V) central vacuum model.
- Recognizable alternate markings: This motor may also be labeled 2557 or 12-2557.
- Brushes can be replaced: The carbon motor brushes on this motor can be replaced before the motor is on its last legs.
MD Compatibility
This part is listed as the match for these MD central vacuum power units:
- MD M575H2 (240V)
Check the model number on your power unit label before ordering. Our team can confirm the match if you are unsure.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | AMETEK Lamb |
| Part number | 122557-00 |
| Voltage | 240 |
| Hertz | 50-60 |
| Fan stages | 2 |
| Bottom diameter | 5.7 in |
| Height | 7.5 in |
| Waterlift | 132.2 in |
| CFM | 126.2 |
| AirWatts | 547 |
| Amps | 7.9 |
| Fits MD model | MD M575H2 (240V) |
| Compatibility note | Includes AirMaster and Modern Day |
| Authorized Dealer | Ace Vacuums |
Best For
- Replacing a worn or failing 240 volt vacuum motor
- MD M575H2 (240V) central vacuum systems
- Units showing blue sparks, electrical smell, or repeated shutdown
- Matching a motor marked 122557-00, 2557, or 12-2557
Not Ideal For
- Not for systems unless the motor specification matches 240 volt requirements
- Not for buyers who need a rebuilt motor
- Compatibility should be checked if your MD central vacuum model is not listed
Why Buy from Ace Vacuums
When you purchase from Ace Vacuums, you receive:
- Central vacuum parts matched to your MD system
- Help choosing the right hose, tools and inlet parts
- Knowledgeable support before and after the sale
- Shipping or pickup at our Fairfax and Leesburg showrooms
Available Online & In-Store
The AMETEK Lamb 122557-00 Vacuum Motor for MD Central Vacuum is available online and in-store through Ace Vacuums.
Visit Our Showrooms
- Fairfax, VA: 11110 Main St, Fairfax, VA 22030
- Leesburg, VA: 300 Fort Evans Rd NE, Leesburg, VA 20176
Call 703-997-9292 (ext. 1 Fairfax, ext. 2 Leesburg).
Quick Summary
This 240 volt Lamb vacuum motor is a replacement motor used in some central vacuum brands and models, including select MD central vacuum systems. It is a brand new original motor and includes a wire set with spades for connection to the motor.
Available from Ace Vacuums, with help matching parts to your MD central vacuum system at our Fairfax and Leesburg, VA showrooms.
Quick Highlights
- Lamb 122557-00 original motor
- 240 volt motor
- 2 fan stages
- Includes wire set with spades
- Fits MD M575H2 (240V)
- May be marked 2557 or 12-2557
Product Overview
The 122557-00 vacuum motor is a replacement motor for certain central vacuum units, including the MD M575H2 (240V). This is a new Lamb Ametek original motor, not a rebuilt motor.
It includes a wire set with spade connectors to attach to the motor. The other end is recommended to be spliced to the old wire using wire nuts.
Common signs that replacement may be needed include a mini breaker popping, electrical smell, excessive blue sparks from the motor top, a click without startup, or a motor that shuts down and works again later.
Key Features
- Original replacement motor: This is a brand new Lamb Ametek original motor, not a rebuilt unit.
- 240 volt operation: Designed as a 240 volt vacuum motor replacement.
- Wire set included: Includes a wire set with spades to connect to the motor.
- Fits select MD systems: Listed for use with the MD M575H2 (240V) central vacuum model.
- Recognizable alternate markings: This motor may also be labeled 2557 or 12-2557.
- Brushes can be replaced: The carbon motor brushes on this motor can be replaced before the motor is on its last legs.
MD Compatibility
This part is listed as the match for these MD central vacuum power units:
- MD M575H2 (240V)
Check the model number on your power unit label before ordering. Our team can confirm the match if you are unsure.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | AMETEK Lamb |
| Part number | 122557-00 |
| Voltage | 240 |
| Hertz | 50-60 |
| Fan stages | 2 |
| Bottom diameter | 5.7 in |
| Height | 7.5 in |
| Waterlift | 132.2 in |
| CFM | 126.2 |
| AirWatts | 547 |
| Amps | 7.9 |
| Fits MD model | MD M575H2 (240V) |
| Compatibility note | Includes AirMaster and Modern Day |
| Authorized Dealer | Ace Vacuums |
Best For
- Replacing a worn or failing 240 volt vacuum motor
- MD M575H2 (240V) central vacuum systems
- Units showing blue sparks, electrical smell, or repeated shutdown
- Matching a motor marked 122557-00, 2557, or 12-2557
Not Ideal For
- Not for systems unless the motor specification matches 240 volt requirements
- Not for buyers who need a rebuilt motor
- Compatibility should be checked if your MD central vacuum model is not listed
Why Buy from Ace Vacuums
When you purchase from Ace Vacuums, you receive:
- Central vacuum parts matched to your MD system
- Help choosing the right hose, tools and inlet parts
- Knowledgeable support before and after the sale
- Shipping or pickup at our Fairfax and Leesburg showrooms
Available Online & In-Store
The AMETEK Lamb 122557-00 Vacuum Motor for MD Central Vacuum is available online and in-store through Ace Vacuums.
Visit Our Showrooms
- Fairfax, VA: 11110 Main St, Fairfax, VA 22030
- Leesburg, VA: 300 Fort Evans Rd NE, Leesburg, VA 20176
Call 703-997-9292 (ext. 1 Fairfax, ext. 2 Leesburg).
Frequently Asked Questions
Is this a new or rebuilt motor?
This is a brand new Lamb Ametek original motor, not a rebuilt motor.
What MD central vacuum model does this fit?
This motor is listed for the MD M575H2 (240V). If your MD central vacuum model is not listed, confirm your model and motor requirements before ordering.
What voltage is this motor?
This is a 240 volt motor.
Does this motor include wiring?
Yes. It includes a wire set with spades to connect to the motor, and the other end is recommended to be spliced to the old wire using wire nuts.
Are there alternate numbers on this motor?
Yes. This motor may say 2557 or 12-2557.
What are signs that this motor needs replacement?
Possible signs include a mini breaker popping, an electrical smell, excessive blue sparks from the motor top, hearing only a click, or the motor shutting down on its own and working again later.
If I hear no click, is the motor always bad?
No. If you do not hear a click, the relay most likely needs to be replaced and the motor may be fine.
Can the brushes be replaced on this motor?
Yes. The Lamb 122557-00 vacuum motor has carbon motor brushes that can be replaced.
Visit Our Showrooms
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📍 AceVacuums Fairfax (DMV Hub)
Address: 11110 Main St, Fairfax, VA 22030
Landmark: Opposite Havertys Furniture Store
Best for: Bethesda, Potomac, Arlington, NW Washington D.C.
📍 AceVacuums Leesburg
Address: 300 Fort Evans Rd NE, Suite 104, Leesburg, VA 20176
Landmark: Next to Home Depot in Leesburg
Best for: Ashburn, Sterling, Frederick MD, Loudoun County
Shipping, Return & Refund Policy
Shipping Policy
In-stock merchandise generally ships from our Leesburg, Virginia location within 3–5 business days. Processing time is separate from carrier transit time and is not a guaranteed delivery date. Weekends and holidays can affect timing. Special-order, backordered or unavailable items may take longer; contact us to confirm timing before purchase when a deadline matters.
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Eligible unused items have a 30-calendar-day return request window for refunds or exchanges, measured from delivery or in-store purchase. Return authorization is required. Final-sale exclusions, the 15% restocking fee for change-of-mind returns and shipping responsibilities are explained in our Return and Refund Policy. That policy is the governing source for return eligibility and fees.
For shipping or return help, email sales@acevacuums.com or call 703-997-9292.
30-Day Returns, Refunds and Exchanges
Updated September 27, 2026. Request a return for an eligible unused item within 30 calendar days of delivery (or purchase for items collected in store). Eligible returns may be refunded to the original payment method or exchanged, subject to availability. The same 30-day request window applies to both refunds and exchanges; there is no separate seven-day or 15-day refund deadline.
Eligibility and authorization
Items must be unused, clean, complete and in their original packaging with all accessories, manuals and proof of purchase. Contact sales@acevacuums.com or 703-997-9292 before sending anything back. Include your order number, item and reason for return. We will confirm eligibility, charges and return instructions. Unapproved or cash-on-delivery returns are not accepted.
Fees and shipping
For an approved change-of-mind return, a 15% restocking fee applies to the returned merchandise price. Original shipping charges are not refundable and the customer pays return shipping. These charges do not apply to an approved return caused by our shipping error or a damaged/defective item claim. Contact us first so we can arrange the appropriate remedy and shipping instructions. Do not assume a prepaid label is included.
Final-sale and excluded items
Air purifiers; discounted, clearance, trade-in, holiday-sale and price-matched purchases; gift cards; custom or special-order products; electrical parts; used or installed items; opened cleaning solutions; and used bags, filters, belts or other consumables are not eligible for change-of-mind returns. Other items clearly marked final sale at purchase are also excluded. An opened box alone does not disqualify an otherwise eligible unused, complete item, but consumables and cleaning solutions must remain unopened.
Damaged, defective, incorrect or missing items; recalls
Inspect your order promptly and contact us as soon as you discover a problem, with your order number and photos where helpful. Keep the packaging. Change-of-mind exclusions and deadlines do not remove applicable defect, warranty, recall or statutory rights. Warranty coverage requires evaluation under the manufacturer's terms; dealer status does not guarantee free repair. Recalled products must follow the manufacturer's recall process.
Refund timing and exchanges
After we receive and inspect the return, we will notify you of approval or the reason it cannot be accepted. Approved refunds are issued to the original payment method within 10 business days of approval; your bank may take additional time to post them. Contact us if more than 15 business days have passed since approval. Exchanges require authorization and replacement availability; any price difference and applicable charges will be explained before processing.
Applicable rights and earlier purchases
This policy applies to online and in-store purchases. We will honor more favorable written return terms provided with an earlier purchase. Applicable consumer rights remain unaffected. Where the European Union 14-day cancellation right applies, customers may cancel or return eligible orders within 14 days of receipt, subject to applicable legal exceptions, without giving a reason.
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