Product Overview

The Pentair 170035 Bottom Manifold Assembly with Outlet Pipe is a genuine OEM replacement component designed for select Pentair Clean & Clear® Plus cartridge filters. This assembly supports the lower ends of the filter cartridges while directing filtered water through the outlet pipe and back to the pool circulation system.

Manufactured to Pentair's original specifications, the 170035 assembly combines the bottom manifold and outlet pipe into a single replacement unit, restoring proper cartridge alignment, water flow, and filtration performance. It is an ideal replacement when the original manifold becomes cracked, warped, or damaged due to age, freeze conditions, or improper handling during filter maintenance.

The assembly includes the bulkhead fitting (178575) along with the required lower bulkhead O-rings, making installation more convenient and helping ensure a leak-free seal. This part is used on compatible Clean & Clear Plus cartridge filters manufactured after specified production dates.

Key Features

Genuine Pentair OEM replacement part

Bottom manifold with integrated outlet pipe

Supports proper cartridge alignment

Restores factory water flow performance

Heavy-duty molded polypropylene construction

Corrosion and chemical resistant

Includes outlet bulkhead (178575)

Includes lower bulkhead O-rings

Direct replacement for compatible Clean & Clear Plus filters

Designed for residential and commercial pool applications

Benefits

A damaged bottom manifold can cause poor cartridge alignment, reduced filtration efficiency, internal bypass, or difficulty assembling the filter correctly. Replacing the manifold restores the proper support structure for the filter cartridges while maintaining correct water flow through the outlet pipe.

Because this is an original Pentair replacement part, it matches the original dimensions and fitment of the factory-installed assembly, helping maintain maximum filter performance and extending the life of the filtration system.

The included bulkhead and sealing O-rings reduce installation time by eliminating the need to purchase these components separately.

Specifications

Warranty & Compatibility

Installation Information

Turn off electrical power to the circulation system and relieve all filter pressure before servicing. Remove the filter lid and cartridges, then inspect the existing bottom manifold for cracks, broken supports, or damaged sealing surfaces.

Install the new manifold assembly with the included bulkhead and O-rings, ensuring the outlet pipe is fully seated and properly aligned before reinstalling the cartridges and top manifold. Lubricate O-rings only with a manufacturer-approved silicone lubricant if required.

Professional installation is recommended to ensure proper sealing and filter performance.

Confirm Before Ordering

Please verify the following before purchasing:

• Your filter is a compatible Pentair Clean & Clear® Plus model.
• You require part number 170035.
• Your existing bottom manifold or outlet pipe is damaged.
• You need the assembly with the outlet pipe included.
• Your filter model uses this version of the manifold assembly.
• You do not require additional internal components such as the top manifold or air bleed assembly.

Warranty Information

The Pentair 170035 Bottom Manifold Assembly is covered by the manufacturer's limited warranty against defects in materials and workmanship. Warranty coverage does not include damage caused by improper installation, freezing, chemical abuse, misuse, or normal wear.

Customer-Facing Q&A

Q: What is included with the 170035 assembly?
A: The assembly includes the bottom manifold, outlet pipe, bulkhead (178575), and the required lower bulkhead O-rings.

Q: Will this fit all Clean & Clear Plus filters?
A: No. Compatibility depends on the filter model and manufacturing date. Always verify your filter's model and replacement parts diagram before ordering.

Q: Does this include the filter cartridges?
A: No. This listing is for the bottom manifold assembly with outlet pipe only.

Q: Is this a genuine Pentair part?
A: Yes. Part number 170035 is an original Pentair OEM replacement component designed for compatible Clean & Clear Plus cartridge filters.