4-Pack
XLS-718 4Pack
In stockReplacement Filter for pentair Waterway 425 4-Pack
Filter Area
105 ft²
Dimensions
7" × 26 1/16"
$189.99
Brand Buying Guide
Waterway™ Replacement Cartridge Filters
Dependable Replacement Filters for Pool & Spa Systems
Excel Filters offers premium Waterway™ replacement cartridge filters designed to provide reliable filtration for pools, spas, and hot tubs. Our cartridges are manufactured with quality materials to deliver excellent performance and help maintain clear, clean water.
Benefits of Waterway™ Replacement Filters
- Efficient particle capture
- Strong, durable construction
- Excellent flow characteristics and easy installation
- Designed for repeat cleaning and dependable service life
Compatible Waterway™ Cartridge Filter Lines
Unsure which cartridge you need? , or follow our how to measure your filter cartridge guide.
- Waterway™ ProClean Cartridge Filters Efficient filtration and excellent water clarity for residential pool applications.
- Waterway™ ProClean Plus Cartridge Filters Higher-capacity filtration and longer cleaning cycles for improved dirt-holding capacity.
- Waterway™ Clearwater II Cartridge Filters Dependable filtration performance and compatibility with many pool systems.
- Waterway™ Crystal Water Cartridge Filters Effective debris removal for pool and spa applications.
- Waterway™ Spa Cartridge Filters Replacement cartridges for many Waterway™ spa filtration systems, including top-load and front-access applications.
Why Choose Excel Filters?
- Made in the USA — Premium pool and spa filters manufactured with strict quality standards.
- OEM-Level Quality — Designed to meet or exceed OEM specifications for fit, function, and performance.
- Expert Support — Our filtration specialists can help you identify the correct replacement cartridge.
- Competitive Pricing — High-quality filtration without the premium OEM price tag.
Waterway™ Replacement Cartridge Filters — OEM Specification Quality
Excel Filters replacement cartridges are designed to meet or exceed OEM specifications, providing the fit, function, and filtration performance needed for Waterway™ pool and spa systems. Our filters are built to deliver dependable water clarity and long service life.
Choose from popular Waterway™ pool and spa filter lines with reliable Excel Filters replacement cartridges below.
Frequently Asked Questions
How do I find the right Waterway™ replacement filter cartridge?
Check the OEM part number printed on the end cap of your current cartridge, or measure its diameter, length, and both end caps. Every Excel Filters product page lists the Waterway™ and aftermarket part numbers it replaces (Pleatco, Unicel, Filbur), and our how-to-measure guide walks through each dimension step by step.
How often should I replace my Waterway™ filter cartridge?
Most pool and spa filter cartridges last 12 to 24 months depending on usage, debris load, and water chemistry. Replace the cartridge when cleaning no longer restores water flow, the pleats fray, or an end cap cracks. Rinsing the cartridge regularly during swim season extends its life.
Are Excel Filters cartridges compatible with Waterway™ filter systems?
Yes. Excel Filters replacement cartridges are manufactured in the USA and engineered to meet or exceed OEM specifications for Waterway™ systems, with matching dimensions, end caps, and filtration media.
Do Excel Filters replacement cartridges come with a warranty?
Yes. Every Excel Filters cartridge is covered by a 6-month limited warranty against defects in materials and manufacturing, and a 30-day return policy.
How fast is shipping?
Standard shipping is free on all orders within the United States. Orders ship within 1–2 business days and typically arrive within 2–3 business days after that.
Shop Waterway™ Replacement Filters
Browse 14 compatible Excel Filters replacements for Waterway™ systems.
4-Pack
XLS-706 4Pack
In stockReplacement Filter for pentair Waterway Crystal Water 525 (817-0131), Crystal Water 600 (817-0143), 525 4-Pack
Filter Area
130 ft²
Dimensions
7" × 32 1/16"
$219.99
4-Pack
XLS-720 4Pack
In stockReplacement Filter for pentair Waterway Crystal Water 325 4-Pack
Filter Area
81.25 ft²
Dimensions
7" × 20"
$189.99
1-Pack
XLS-802 1Pack
In stockReplacement Filter for hayward Waterway Clearwater II 125
Filter Area
125 ft²
Dimensions
8 15/16" × 23 5/16"
$79.99
1-Pack
XLS-803 1Pack
In stockReplacement Filter for hayward Waterway CX1750RE, CX1900RE
Filter Area
175 ft²
Dimensions
8 15/16" × 28 3/16"
$96.99
1-Pack
XLS-800 1Pack
In stockReplacement Filter for hayward Waterway ProClean Plus 100
Filter Area
90 ft²
Dimensions
8 15/16" × 17 3/8"
$79.99
1-Pack
XLS-822 1Pack
In stockReplacement Filter for hayward Waterway 150
Filter Area
150 ft²
Dimensions
8 15/16" × 23 5/16"
$99.99
1-Pack
XLS-801 1Pack
In stockReplacement Filter for hayward Waterway Clearwater II 75
Filter Area
75 ft²
Dimensions
8 15/16" × 17 3/8"
$79.99
1-Pack
XLS-847 1Pack
In stockReplacement Filter for hayward Waterway Clearwater II 125, CCX1750RE
Filter Area
200 ft²
Dimensions
8 15/16" × 23 5/16"
$92.99
1-Pack
XLS-511 1Pack
In stockReplacement Filter for Generic Spa PLBS-50
Filter Area
45 ft²
Dimensions
5 5/16" × 10 1/8"
$39.99
2-Pack
XLS-435 2Pack
In stockReplacement Filter for Waterway Plastics 817-0010 Skim Filter 10, Thermo Spa FL1003, Icon Spas 146949 2-Pack
Filter Area
10 ft²
Dimensions
4 1/4" × 4"
$34.99
2-Pack
XLS-404 1Pack
In stockReplacement Filter for Waterway 817-3510 2-Pack
Filter Area
17.5 ft²
Dimensions
4 15/16" × 4 5/8"
$34.99
1-Pack
XLS-512 15PACK
Low stockReplacement Filter for pentair Waterway 817-0015
Filter Area
65 ft²
Dimensions
5 5/16" × 14 13/16"
$399.99
1-Pack
XLS-418 1Pack
In stockReplacement Filter for Pentair Rainbow Dynamic 35, Sundance Spas 6000-136, Waterway Plastics 817-3501
Filter Area
35 ft²
Dimensions
4 15/16" × 9 1/4"
$29.99