The Tier1 P5-155014-43 is a 5-micron spun polypropylene filter cartridge, engineered as a comparable replacement for the Pentek P5-155014-43. This 5-micron rating effectively reduces sand, silt, sediment, rust flakes, scale particles, and other suspended solids from your whole-house or point-of-use water supply, protecting downstream appliances and extending the life of secondary filtration stages.

The Tier1 P5-155014-43 measures approximately 9-7/8 inches in length with a 2-1/2 inch outer diameter, making it compatible with standard 10-inch Big Blue-style slim housings that accept this cartridge form factor. The included kit also ships with a replacement O-ring and food-grade silicone lubricant, ensuring a leak-free seal when you reinstall the housing sump after a cartridge change.

The Tier1 P5-155014-43 spun polypropylene cartridge has a typical service life of 3 months or up to 15,000 gallons, depending on your incoming water quality and daily usage. Homes on well water or with heavy sediment loads may need to replace the cartridge sooner. We recommend swapping it out when you notice a drop in water pressure or visible discoloration on the cartridge surface.

The Tier1 P5-155014-43 is manufactured from 100% pure polypropylene material that is tested against NSF/ANSI Standard 42 for materials safety, ensuring no contaminants leach into your drinking water. The thermally bonded, resin- and binder-free construction means there are no chemical additives, making it safe for use in residential sediment pre-filtration applications.

Every Tier1 P5-155014-43 replacement kit includes a fresh housing O-ring and a packet of food-grade silicone lubricant because the O-ring is the primary seal preventing leaks between the filter housing cap and sump. Over time, the original O-ring dries out, cracks, or compresses. Replacing it with each cartridge change and applying a thin layer of silicone lubricant ensures a watertight seal and smooth installation, protecting your filtration system from bypass leaks.