Pentair Lil Shark Oscillator Kit | GW9003

The Pentair Lil Shark Oscillator Kit (GW9003) is a replacement internal motion assembly for the Pentair Lil Shark suction-side automatic pool cleaner. This kit includes the oscillator components that help direct water flow through the cleaner’s turbine and drivetrain, producing the back-and-forth movement that allows the unit to traverse your pool floor and walls for efficient debris pickup.

Compatible Pool Cleaner

Pentair Lil Shark Suction-Side Pool Cleaner

Key Features

Complete replacement oscillator assembly
Restores smooth back-and-forth cleaner motion
Durable construction for long-lasting underwater use
Direct OEM replacement for worn, cracked, or sticking oscillator parts
Helps maintain consistent debris pickup performance

Specifications

Brand: Pentair
Part Number: GW9003
Component: Oscillator kit / motion assembly
Application: Pentair Lil Shark suction-side automatic pool cleaner

Application & Use

This oscillator kit replaces the internal parts that convert water flow into the cleaner’s characteristic sweeping motion. Over time, oscillator components can wear, crack, or bind, leading to uneven travel, reduced coverage, or erratic cleaner movement. Replacing the oscillator kit helps restore proper motion and efficient pool cleaning.

Related Products

Maintenance Tips

Inspect the oscillator assembly if the cleaner begins to stall, “lock up,” or fail to sweep evenly across the pool floor. Replacing worn components with this kit can improve tracking, motion consistency, and overall debris removal performance.

Questions about returns? View our return policy.

Hours Of Operation:

Monday - Friday: 7:00 am to 5:00 pm Phoenix Time

Saturday: 8:00 am to 2:00 pm

Sunday: Closed

We do not ship on Saturday or Sunday.
Orders totaling more than $300 will require signature confirmation upon delivery.
We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
Expedited shipping options are available at checkout.

Return Policy:

Products that are received damaged will receive a refund in store credit.
Most products are eligible for return within 30 days of receipt, except where noted below.
To initiate a return, please complete an RMA form prior to sending your item back.
Original shipping costs are non-refundable and will be deducted from the return credit.
Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
Some returns will be charged an automatic 15% restocking fee.
We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
Please complete the return form to receive your RMA number and return shipping label.
Chemical products are not eligible for return under any circumstances.
The Pentair Colorsync 618031 is not eligible for return.
Pool cleaners are not eligible for return.
Opened seals and o-rings are not eligible for return.
Capacitors are not eligible for return.
Plastic popup tools are not eligible for return.
Automation components and circuit boards are not eligible for return.
If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.