Complete Wet End Replacement for Pentair 357149 — WhisperFlo & IntelliFlo, 3 HP

This Complete Wet End Replacement Kit is an aftermarket assembly compatible with Pentair WhisperFlo and IntelliFlo 3 HP pool pumps (replaces the wet end associated with Pentair 357149). It rebuilds the pump's entire water-handling section in one kit — housing, seal plate, diffuser, basket, lid, and all hardware — so you can fix a cracked, leaking, or worn wet end without replacing the motor or sourcing parts individually.

Key Features

• Compatible replacement for Pentair 357149: Engineered to match the fit and function of the OEM wet end at a lower cost.
• Complete rebuild in one kit: Everything for the wet end in a single box — no piecing together part numbers.
• Built for 3 HP / high-flow: Sized for WhisperFlo 3 HP and IntelliFlo 3 HP-class pumps and continuous-use applications.
• Reinforced housing & seal plate: Extra material versus standard parts helps resist cracking under high pressure.
• Keeps your motor: Reuse your existing working motor — far cheaper than a whole new pump.
• Includes hi-temp unions: 2" hi-temp unions speed up installation and future service.

What's Included

• Pump housing / volute (equivalent to 350015)
• Seal plate (074564) with PS-1000 shaft seal
• Diffuser with O-ring (072928 / 072927)
• Strainer basket (070387Z)
• Lid with O-ring (357151) and locking clamp ring (357199)
• Foot insert & base (070929 / 070927)
• Pot/drain screws and plugs (071131), diffuser screws, and complete hardware kit
• 2" hi-temp unions

Not Included

• Motor — reuse your existing motor
• Impeller — impellers are specific to your pump's horsepower and are sold separately

Specifications

• Type: Complete wet end replacement kit (aftermarket)
• Compatible With: Pentair WhisperFlo 3 HP and IntelliFlo 3 HP-class pumps (incl. models 011018, 011055, 011056)
• Part Reference: 357149
• Material: Reinforced thermoplastic housing; corrosion-resistant hardware
• Note: Aftermarket replacement — not a Pentair OEM component; brand names are for compatibility reference only

Frequently Asked Questions

Which pumps does this fit?

Pentair WhisperFlo and IntelliFlo pumps in the 3 HP class. For 0.5–2 HP pumps, order the 0.5–2 HP version instead. Always verify your pump model and horsepower before ordering.

Does it include the impeller?

No. The impeller is HP-specific and sold separately — matching the impeller to your pump's horsepower is essential. The motor is also not included; you reuse your existing one.

Is this a genuine Pentair part?

No — it's a quality aftermarket replacement designed to be compatible with the Pentair 357149 wet end, matching the fit and function of the OEM assembly at a lower price.

What exactly comes in the kit?

The full wet end: housing/volute, seal plate with shaft seal, diffuser with O-ring, strainer basket, lid with O-ring, locking ring, foot insert/base, screws, drain plugs, complete hardware, and 2" hi-temp unions. See "What's Included" above.

How is this different from the 0.5–2 HP version?

Horsepower and internal sizing. This kit is built for 3 HP pumps; the other version fits 0.5–2 HP pumps. They are not interchangeable — match the kit to your pump's HP.

Should I replace the shaft seal too?

It's already included (PS-1000) — always install the fresh seal that ships with the kit to prevent repeat leaks. Professional installation is recommended.