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Pentair Challenger High Pressure Pump Replacement Parts Diagram

Interactive parts diagram

30 parts · 2 with cheaper aftermarket options. Tap a number on the diagram, or search by part number.

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    • Not sold online Pentair square-flange pump motor; order by the horsepower and voltage on your motor label 355019S-355378SCall us and we'll get it for you.
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    • Not sold online Pentair mounting plate: 355317 for 3/4F-3F and 1A-2-1/2A pumps, 355384 for 1/2F and 3/4A pumps 355317Call us and we'll get it for you.
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  5. Pump size
  6. Pump size
    • Not sold online Pentair screw, 3/8"-16 hex head, stainless (4 needed) U30-74SSCall us and we'll get it for you.
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    • Not sold online Pentair pump base (includes motor adapter 11B, fits 5-5/8" and 6-1/2" motors) 355305Call us and we'll get it for you.
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    • Not sold online Pentair motor support adapter, 5-5/8" dia. motor 355385Call us and we'll get it for you.
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    • Not sold online Pentair screw, 8-32 x 1" hex washer head, stainless (3 needed) 355334Call us and we'll get it for you.
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    • Not sold online Pentair front housing O-ring 355329Call us and we'll get it for you.
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    • Not sold online Pentair screw, 5/16"-18 x 1/2" hex washer head, stainless (2 needed, booster pumps only) 355335Call us and we'll get it for you.
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    • Not sold online Pentair drain plug, 1/4" 357161Call us and we'll get it for you.
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    • Not sold online Pentair carriage bolt, 5/16"-18 x 4" (older-style clamp band) 152060Call us and we'll get it for you.
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    • Not sold online Pentair washer, 5/16" flat, stainless 072173Call us and we'll get it for you.
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    • Not sold online Pentair clamp knob: 174882 for clamp with removable bolt, 175025 for clamp with captured T-bolt 174882Call us and we'll get it for you.
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    • Not sold online Pentair screw, 5/16"-18 x 3/4" hex washer head, stainless (4 needed) 354265Call us and we'll get it for you.
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    • Not sold online Pentair drain plug, 1/4" 357161Call us and we'll get it for you.
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    • Not sold online Pentair strainer pot 355300Call us and we'll get it for you.
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    • Not sold online Pentair reducer bushing for 1/2F, 3/4F, 3/4A and 1A pumps (2 needed) 552377Call us and we'll get it for you.
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Also fits your Pentair Challenger High Pressure Pump

Not shown on the diagram, but made for this pump.

Fit guide

Which Challenger part fits your pump?

Pentair lists Challenger high pressure parts by horsepower: F = full rated, A = up rated (for example 1F, 1-1/2A is one size). Check the horsepower on your pump or motor label. Part numbers come from Pentair's Challenger High Pressure Pump replacement parts list.

Impeller by pump size

Diffuser by pump size

½F, ¾A
355148
¾F, 1F, 1A, 1½A
355188
1½F, 2A
355270
2F, 2½A, 3F
355545

2F and 2-1/2A pumps built before 10-1-92 must switch to both diffuser 355545 and impeller 355604.

Seal, O-rings & mounting plate

Shaft seal all sizes
354545S U.S. Seal PS-200
Diffuser O-ring
355331
Housing O-ring
355329
Mounting plate ½F, ¾A
355384
Mounting plate ¾F – 3F, 1A – 2½A
355317

Strainer pot, basket & lid

Basket all except 3F
355318 ARG BHD219
Basket 3F only
355441 stainless
Lid standard
355301
Lid chemical resistant
354112
Lid O-ring
350013 Swimables SW-80-436