Dyson DC40 Roller Brush (Replacement) – Genuine Dyson Brushbar Assembly

Product Overview

The Dyson DC40 Roller Brush (Replacement) is a genuine Dyson part designed to deliver the high-performance cleaning that Dyson vacuums are known for. Engineered with precision-balanced rollers and durable nylon bristles, this replacement brushbar restores the deep carpet agitation needed for powerful dirt removal.

Manufactured to Dyson’s strict quality standards, the Dyson DC40 Roller Brush (Replacement) ensures flawless rotation, reduced vibration, and enhanced cleaning efficiency. Perfect for homeowners, pet owners, and allergy-sensitive users, it revitalizes your Dyson DC40 vacuum and keeps it operating like new.

Available exclusively through Authorized Dyson Dealer Ace Vacuums, this OEM replacement guarantees authenticity, proper fit, and long-lasting durability. Buying through Ace Vacuums ensures you receive an original Dyson product backed by Dyson’s official parts warranty and expert support.

Key Features

• Genuine OEM Dyson replacement part – Part Number 923940-01.

• Designed for Dyson DC40 upright vacuums, including DC40 Origin, DC40 Animal, and DC40 Multi Floor.

• High-torque roller with precision-balanced design for optimal brush performance.

• Durable nylon bristles for effective dirt, dust, and pet hair removal.

• Restores vacuum suction efficiency and deep-cleaning capability.

• Easy to install — simply remove the cleaner head cover and slide in the replacement brushbar.

• Tested by Dyson engineers for reliability, balance, and long-term use.

• Color: Charcoal and purple with Dyson OEM markings.

Sold exclusively through Authorized Dyson Dealer Ace Vacuums.

What Makes the Model Stand Out

The Dyson DC40 Roller Brush (Replacement) stands out for its engineering precision and perfect compatibility with Dyson DC40 vacuums. Unlike generic copies that often wobble, shed bristles, or damage the cleaner head, this genuine Dyson roller brush ensures balanced, smooth operation at the correct torque and speed.

Each brushbar is manufactured to Dyson’s specifications, featuring advanced bristle spacing and airflow optimization for superior carpet and floor cleaning. When purchased through Authorized Dyson Dealer Ace Vacuums, customers are guaranteed authentic parts with Dyson’s quality assurance, warranty coverage, and expert after-sales support.

Technical Specifications

• Model Name: Dyson DC40 Roller Brush (Replacement)

• MPN / Part Number: 923940-01

• Product Type: Vacuum Brush Roll / Agitator Bar

• Compatibility or Fit: Fits all Dyson DC40 models – DC40 Origin, DC40 Animal, DC40 Multi Floor, DC40 Complete

• Filtration / Capacity / Power: N/A (mechanical brush component)

• Country of Origin: Malaysia / United Kingdom (depending on batch)

• Warranty or Guarantee: 1-Year Dyson Parts Warranty (when purchased through an Authorized Dyson Dealer)

• Authorized Dealer: Ace Vacuums

Ideal Buyers

The Dyson DC40 Roller Brush (Replacement) is perfect for:

• Homeowners looking to restore peak cleaning performance in their Dyson DC40.

• Pet owners who need powerful brush action for removing embedded pet hair.

• Allergy sufferers relying on Dyson’s sealed system and superior debris pickup.

• Professional cleaners or Dyson enthusiasts who demand genuine Dyson quality.

When purchased from Authorized Dyson Dealer Ace Vacuums, customers receive a guaranteed OEM component, ensuring proper performance and vacuum longevity.

Availability

The Dyson DC40 Roller Brush (Replacement) is available both online and in-store through Authorized Dyson Dealer Ace Vacuums. Customers enjoy genuine OEM packaging, verified Dyson authenticity, and professional sales support.

Ordering through Ace Vacuums ensures fast shipping, secure handling, and the confidence that comes only with genuine Dyson parts.

Comparison Table

Pros and Cons

Pros:

• 100% OEM Dyson part for guaranteed fit and function.

• Restores full cleaning efficiency and brush rotation speed.

• Built with durable nylon bristles and balanced roller design.

• Backed by Dyson warranty through Authorized Dyson Dealer Ace Vacuums.

• Easy to install and maintain.

Cons:

• Higher cost than third-party replacements.

• Designed only for Dyson DC40 models.

Frequently Asked Questions 

1. What is the Dyson DC40 Roller Brush (Replacement) by Dyson?
The Dyson DC40 Roller Brush (Replacement) is the genuine Dyson brushbar designed to restore deep-cleaning performance in Dyson DC40 vacuums. It’s available exclusively through Authorized Dyson Dealer Ace Vacuums.

2. Why buy from Authorized Dyson Dealer Ace Vacuums?
Purchasing through Authorized Dyson Dealer Ace Vacuums guarantees a genuine Dyson part, original packaging, manufacturer-backed warranty, and trusted customer service.

3. Which Dyson models does this roller brush fit?
The Dyson DC40 Roller Brush (Replacement) fits all Dyson DC40 models, including DC40 Origin, DC40 Animal, and DC40 Multi Floor. Authorized Dyson Dealer Ace Vacuums can verify your model compatibility.

4. How do I know my Dyson DC40 Roller Brush needs replacing?
If your brush roll isn’t spinning, has worn or frayed bristles, or creates uneven noise, it’s time to replace it with a genuine Dyson DC40 Roller Brush from Authorized Dyson Dealer Ace Vacuums.

5. Is installation of the Dyson DC40 Roller Brush difficult?
No. The roller brush is user-installable. Simply remove the cleaner head cover, slide out the old roller, and insert the new one. For help, contact Authorized Dyson Dealer Ace Vacuums.

6. How often should the Dyson DC40 Roller Brush be replaced?
For optimal performance, Dyson recommends replacing the roller brush every 2–3 years, depending on usage. Genuine replacements are available from Authorized Dyson Dealer Ace Vacuums.

7. Does this roller brush improve vacuum suction?
Yes. The brush roll agitates carpet fibers, helping your Dyson DC40 pull more dirt and debris from deep within carpets. Purchase genuine replacements from Authorized Dyson Dealer Ace Vacuums for best results.

8. Are there differences between genuine and generic roller brushes?
Absolutely. Genuine Dyson DC40 Roller Brushes are engineered to exact torque and balance specifications. Generic versions often vibrate, underperform, or damage the cleaner head. Always buy from Authorized Dyson Dealer Ace Vacuums.

9. Does the Dyson DC40 Roller Brush (Replacement) come with end caps?
Yes. It includes pre-installed end caps and bearings for seamless replacement. Sold through Authorized Dyson Dealer Ace Vacuums.

10. How can I confirm my Dyson DC40 Roller Brush is authentic?
Look for Dyson branding, part number 923940-01, and official packaging. Buying from Authorized Dyson Dealer Ace Vacuums guarantees authenticity.

11. Will this replacement void my Dyson warranty?
No. When purchased through Authorized Dyson Dealer Ace Vacuums, your Dyson DC40 Roller Brush (Replacement) is covered by Dyson’s 1-year parts warranty.

12. Can I use the Dyson DC40 Roller Brush on hard floors?
Yes, but ensure your DC40 model’s floor selector is in the appropriate position. For model-specific advice, consult Authorized Dyson Dealer Ace Vacuums.

13. What materials are used in the Dyson DC40 Roller Brush (Replacement)?
It’s constructed with reinforced nylon bristles and a balanced composite roller core — ensuring maximum durability. Available from Authorized Dyson Dealer Ace Vacuums.

14. Does the Dyson DC40 Roller Brush help with pet hair?
Yes. The dense bristle pattern and rotational speed make it ideal for removing embedded pet hair and dander. Authorized Dyson Dealer Ace Vacuums recommends this genuine part for pet owners.

15. Is the Dyson DC40 Roller Brush (Replacement) available for immediate purchase?
Yes. It’s available both online and in-store from Authorized Dyson Dealer Ace Vacuums, ensuring fast delivery and verified genuine Dyson parts.

Ace Vacuums Locations:

• Fairfax, VA: 11110 Main Street, Fairfax, VA 22030
• Leesburg, VA: 300 Fort Evans Rd NE, Leesburg, VA 20176

Driving Directions to Ace Vacuums in Fairfax, VA (11110 Main Street, Fairfax, VA 22030)

From Maryland (e.g., Bethesda, Silver Spring, Rockville):

1. Start on I-495 S (Capital Beltway Inner Loop): Head south on I-495 towards Northern Virginia.
2. Take Exit 45 A-B for VA-267 W (Dulles Toll Road): Follow signs for VA-267 West (Dulles Toll Road). Be aware this is a toll road.
3. Continue on VA-267 W: Stay on the Dulles Toll Road for several miles.
4. Take Exit 16 for VA-7 E (Leesburg Pike) / VA-123 S (Chain Bridge Rd): Follow signs for VA-123 South (Chain Bridge Rd).
5. Merge onto VA-123 S (Chain Bridge Rd): Continue south on Chain Bridge Road.
6. Turn Right onto Main Street (VA-236 W): This will be a significant intersection. You'll continue on Main Street for a short distance.
7. Ace Vacuums Fairfax: Ace Vacuums will be on your left side, directly opposite Havertys Furniture Store. Look for their prominent signage.

From Washington D.C. (e.g., Downtown D.C.):

1. Take I-66 W toward Vienna/Centreville/Fairfax: Get onto I-66 West.
2. Take Exit 60 for VA-123 S (Chain Bridge Rd) toward Fairfax: Follow the exit ramp.
3. Turn Right onto VA-123 S (Chain Bridge Rd): Continue south on Chain Bridge Road.
4. Turn Right onto Main Street (VA-236 W): This will be a significant intersection.
5. Ace Vacuums Fairfax: Ace Vacuums will be on your left side, directly opposite Havertys Furniture Store.

From Northern Virginia (e.g., Arlington, Falls Church, Vienna):

• From Arlington/Falls Church:
  1. Take US-50 W (Arlington Blvd) or VA-236 W (Main Street) directly into Fairfax: Depending on your starting point, either of these roads will lead you directly to Fairfax.
  2. Continue on Main Street (VA-236 W):
  3. Ace Vacuums Fairfax: Ace Vacuums will be on your left side, directly opposite Havertys Furniture Store.
• From Vienna:
  1. Take VA-123 S (Chain Bridge Rd) toward Fairfax: Head south on Chain Bridge Road.
  2. Turn Right onto Main Street (VA-236 W):
  3. Ace Vacuums Fairfax: Ace Vacuums will be on your left side, directly opposite Havertys Furniture Store.
• From Areas West/Northwest of Fairfax (e.g., Chantilly, Centreville):
  1. Take US-50 E or I-66 E towards Fairfax.
  2. If on I-66 E, take Exit 60 for VA-123 S (Chain Bridge Rd). Turn left onto Chain Bridge Rd, then right onto Main Street.
  3. If on US-50 E, turn right onto Main Street (VA-236 E) in Fairfax.
  4. Ace Vacuums Fairfax: Ace Vacuums will be on your right side if coming from US-50 E/VA-236 E, shortly after crossing VA-123. Look for Havertys Furniture Store on your left.

Driving Directions to Ace Vacuums in Leesburg, VA (300 Fort Evans Rd NE, Leesburg, VA 20176)

From Maryland (e.g., Bethesda, Silver Spring, Rockville):

1. Start on I-495 S (Capital Beltway Inner Loop): Head south on I-495 towards Northern Virginia.
2. Take Exit 45 A-B for VA-267 W (Dulles Toll Road): Follow signs for VA-267 West (Dulles Toll Road). Be aware this is a toll road.
3. Continue on VA-267 W (Dulles Toll Road/Dulles Greenway): Stay on VA-267 West. This road transitions from the Dulles Toll Road to the Dulles Greenway as you head further west into Loudoun County. Tolls apply for both sections.
4. Take Exit 1A for VA-7 W (Harry Byrd Hwy) toward Leesburg: This is a major exit.
5. Continue on VA-7 W: You'll drive for several miles, passing through Sterling and Ashburn.
6. Take the Exit for Battlefield Parkway / Fort Evans Road: As you approach Leesburg, look for this exit.
7. Turn Right onto Fort Evans Rd NE: After exiting, turn right onto Fort Evans Road NE.
8. Ace Vacuums Leesburg: Ace Vacuums will be on your right side, located next to the Home Depot, and directly across from the Leesburg Premium Outlets.

From Washington D.C. (e.g., Downtown D.C.):

1. Take I-66 W toward Vienna/Centreville: Get onto I-66 West.
2. Merge onto VA-267 W (Dulles Toll Road): Follow signs for VA-267 West (Dulles Toll Road). Tolls apply.
3. Continue onto VA-267 W (Dulles Greenway): Stay on the Dulles Greenway. Tolls apply.
4. Take Exit 1A for VA-7 W (Harry Byrd Hwy) toward Leesburg:
5. Continue on VA-7 W:
6. Take the Exit for Battlefield Parkway / Fort Evans Road:
7. Turn Right onto Fort Evans Rd NE:
8. Ace Vacuums Leesburg: Ace Vacuums will be on your right side, located next to the Home Depot, and directly across from the Leesburg Premium Outlets.

From Northern Virginia (e.g., Fairfax, Arlington, Ashburn, Sterling):

• From Fairfax:
  1. Take VA-123 N (Chain Bridge Rd) to access VA-267 W (Dulles Toll Road) or take I-66 W to VA-267 W: Your best bet is to get onto VA-267 West (Dulles Toll Road).
  2. Continue on VA-267 W (Dulles Toll Road/Dulles Greenway): Tolls apply.
  3. Take Exit 1A for VA-7 W (Harry Byrd Hwy) toward Leesburg:
  4. Continue on VA-7 W:
  5. Take the Exit for Battlefield Parkway / Fort Evans Road:
  6. Turn Right onto Fort Evans Rd NE:
  7. Ace Vacuums Leesburg: Ace Vacuums will be on your right side, located next to the Home Depot, and directly across from the Leesburg Premium Outlets.
• From Ashburn / Sterling / Eastern Loudoun County:
  1. Take VA-7 W (Harry Byrd Hwy) directly toward Leesburg: This is the most direct route.
  2. Take the Exit for Battlefield Parkway / Fort Evans Road:
  3. Turn Right onto Fort Evans Rd NE:
  4. Ace Vacuums Leesburg: Ace Vacuums will be on your right side, located next to the Home Depot, and directly across from the Leesburg Premium Outlets.
• From Western Virginia (e.g., Winchester):
  1. Take US-7 E (Harry Byrd Hwy) toward Leesburg:
  2. In Leesburg, after passing the Leesburg Premium Outlets on your left, prepare for the Fort Evans Road / Battlefield Parkway exit.
  3. Take the Exit for Fort Evans Road / Battlefield Parkway.
  4. Turn Left onto Fort Evans Rd NE: You'll go over VA-7.
  5. Ace Vacuums Leesburg: Ace Vacuums will be on your right side, located next to the Home Depot.

Shipping Policy

Return Policy

• Report Issues Promptly: Inspect your shipment upon arrival. Any shortages or defects must be reported within 7 days of delivery or they cannot be addressed.

• Return Window: Unused items in their original packaging may be returned within 15 days of delivery for a full refund. After 15 days and up to 30 days, only an exchange or store credit is offered, provided the item is unused and in its original packaging. Products returned beyond 30 days will not be accepted.

• Restocking Fees: A standard restocking fee of 15 % applies to all approved returns. Used, damaged, or incomplete items may incur a restocking fee of up to 50 % or be refused entirely.

• Final Sale Items: All discounted items, trade‑ins, holiday promotions, price‑matched goods, and air purifiers are final sale and not eligible for return or exchange.

• No Cash Refunds: Refunds will be issued to the original payment method. Shipping charges are non‑refundable and return shipping is the customer’s responsibility unless the return is due to our error.

• Return Authorization Required: Before returning any item, you must contact our customer service at 1‑888‑606‑8885 (Mon–Fri, 10 a.m.–7 p.m. EST) to obtain return instructions and the correct return address. Unauthorized or COD returns will not be accepted.

• Processing Time: Once your return is received and inspected, please allow up to 10 business days for processing.
  
  We recommend including a copy of your receipt and your contact information with all returns to ensure prompt service.