Polaris

Polaris R0838400 OEM Quattro Right Gearbox

SKU: R0838400 UPC: 052337079266
Regular price $54.45 Sale price$65.95you save $11.50
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Quick Facts
Polaris OEM part R0838400
Right-side brush gearbox
Quattro P40 / Sport applications
For pressure-side cleaners
Left-side gearbox is different
Key Benefits +
  • Replaces the specified right-side brush gearbox
  • Supports a targeted repair to the brush-drive mechanism
  • Uses a distinct right-side reference to avoid ordering the left gearbox
  • Allows service of a compatible Quattro cleaner without replacing the whole unit
How to Use +
1 Confirm the cleaner model and right-side R0838400 reference in the parts diagram. Turn off the filtration and booster pumps before removing the cleaner for service. Have the brush and drive components inspected so the cause of the problem is identified before replacement. Follow Polaris service instructions, using a qualified pool professional if you are unfamiliar with the repair.
Specifications +

Brand: Polaris

Manufacturer part number: R0838400

Part type: Right-side brush gearbox

Documented applications: Polaris Quattro P40 and Quattro Sport

Cleaner type: Pressure-side

Position: Right, as identified in the parts diagram

Replacement type: Genuine Polaris OEM

UPC: 052337079266

Buy with Confidence from Benchmark Pool Supply +

Benchmark Pool Supply can help distinguish left and right Polaris brush-drive parts using your cleaner model and parts diagram. Share the original part reference and service diagnosis so we can help confirm R0838400 before you order.

Buy with Confidence from Benchmark Pool Supply

  • Trusted pool professionals
  • 100% Genuine Manufacturer Parts Guaranteed
  • Shipping options for eligible products
Returns subject to product eligibility
Expert Product Support
Full Product Description +

When your Polaris Quattro P40 or P40 Sport stops brushing effectively on one side, the issue is often not the brush itself—it’s the gearbox driving it. The Polaris Quattro P40 Sport Right Side Brush Gearbox (R0838400) is a genuine OEM replacement designed to restore proper brush rotation, debris agitation, and balanced cleaning performance.

This gearbox transfers drive power to the right-side brush, allowing it to scrub stubborn debris from pool surfaces. When it wears out or fails, the cleaner may leave dirt behind, lose traction, or clean unevenly. Replacing the gearbox brings the cleaner back to factory-level brushing performance without replacing the entire unit.


Restores Active Brushing and Debris Removal

The Quattro P40 relies on powered side brushes to loosen dirt and push debris toward the intake. A worn or failed gearbox can cause:

  • One brush to stop spinning

  • Uneven cleaning paths

  • Poor debris pickup along walls or edges

  • Reduced overall cleaning effectiveness

Installing the R0838400 right-side brush gearbox restores proper brush motion and improves cleaning consistency across the pool.


Designed Specifically for Polaris Quattro P40 & P40 Sport

This gearbox is engineered exclusively for:

  • Polaris Quattro P40

  • Polaris Quattro P40 Sport

It is a direct-fit replacement for the right side brush assembly, ensuring correct alignment, gearing, and drive engagement. Using the proper OEM gearbox prevents premature wear and ensures smooth, reliable operation.


Genuine Polaris OEM Construction

As an OEM Polaris part, the R0838400 gearbox is built to factory specifications using materials designed to withstand:

  • Continuous underwater operation

  • Chlorine and pool chemicals

  • Mechanical load from active brushing

  • Long cleaning cycles

OEM quality matters for drivetrain components where precision and durability directly affect performance.


Smart Repair That Extends Cleaner Life

Replacing a failed brush gearbox is a cost-effective alternative to replacing the entire cleaner. It’s an ideal repair when:

  • The cleaner still has strong suction

  • The body and tracks are in good condition

  • Only one side brush has stopped rotating

This targeted repair restores full functionality and extends the service life of your Quattro cleaner.


Product Specifications

Specification Details
Brand Polaris
Product Name Right Side Brush Gearbox
Part Number R0838400
Cleaner Type Robotic pool cleaner
Compatibility Polaris Quattro P40 & P40 Sport
Position Right side brush
Function Transfers drive power to brush
OEM Part Yes
Installation Direct replacement
SKU R0838400
UPC 052337079266

Why Pool Owners Choose the Polaris R0838400 Gearbox

  • Restores powered brushing on one side

  • Improves debris agitation and pickup

  • OEM Polaris fit and durability

  • Prevents uneven cleaning patterns

  • Extends the life of Quattro P40 cleaners

  • Cost-effective targeted repair

If your Quattro P40 is cleaning unevenly or missing debris, the brush gearbox is often the root cause.


Buy with Confidence from Benchmark Pool Supply

When you purchase the Polaris Quattro P40 Sport Right Side Brush Gearbox – R0838400 from Benchmark Pool Supply, you’re buying from pool professionals who understand cleaner drive systems and real-world repair decisions.

We stock genuine Polaris replacement parts and help customers fix the right component the first time.

Polaris R0838400 OEM Quattro Right Gearbox
Regular price $54.45 Sale price$65.95

Frequently Asked Questions

What does the Polaris R0838400 brush gearbox do?

What does the Polaris R0838400 brush gearbox do?

The Polaris R0838400 gearbox drives the right-side brush, allowing it to rotate and scrub debris from pool surfaces.
Which cleaners use the R0838400 gearbox?

Which cleaners use the R0838400 gearbox?

Manufacturer parts references list it for the Polaris Quattro P40 and Quattro Sport pressure-side cleaners. Verify R0838400 and the right-side position in your model's diagram.
What are signs the brush gearbox has failed?

What are signs the brush gearbox has failed?

A brush that does not rotate needs inspection for debris, brush wear and drive problems. Symptoms alone do not confirm that the gearbox is the failed component.
Is this a genuine Polaris OEM part?

Is this a genuine Polaris OEM part?

Yes, the R0838400 is a genuine OEM Polaris replacement gearbox.
Is the right-side gearbox interchangeable with the left?

Is the right-side gearbox interchangeable with the left?

No. R0838400 is the right-side brush gearbox; Polaris lists R0838500 for the left. Use the parts diagram to identify the correct side.