Pentair / Sta-Rite C105-137PDA Impeller Assembly (2 HP Full-Rated / 2.5 HP Up-Rated) for Max-E-Glas & Dura-Glas Pumps
The Pentair / Sta-Rite C105-137PDA is an OEM impeller assembly used on select Sta-Rite Max-E-Glas and Dura-Glas in-ground pool/spa pumps. This impeller is commonly specified for 2 HP full-rated and 2.5 HP up-rated configurations (match to your exact pump model and motor type).
Key Details
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Manufacturer: Pentair / Sta-Rite
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Part Number: C105-137PDA
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Impeller Type: Pump impeller assembly (wet-end)
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Typical Rating Range: 2 HP full-rated / 2.5 HP up-rated (application-dependent)
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Impeller Screw: Requires C3012 impeller screw (sold separately)
Common Pump Model Applications (Verify Your Exact Model)
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Sta-Rite Max-E-Glas / Dura-Glas Full-Rated: PE5G-122L, PE6G-184L, PE6G-122L, PE52G-184, PE52G-122, PE52G-185, P2R52G3-184, P2R52G3-122, P2R5G3-184, P2R5G3-122
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Sta-Rite Max-E-Glas / Dura-Glas Up-Rated: PEAA5G-122L, PEAA6G-184L, PEAA6G-122L
Tip: The most accurate way to confirm fit is to match the impeller part number on your pump’s parts diagram or the number molded/printed on your existing impeller.
What This Impeller Does
- Generates the pump’s water flow and pressure by converting motor rotation into water movement through the volute.
- Works with the diffuser to stabilize flow and maintain efficient hydraulic performance.
- Restores circulation when the original impeller is cracked, debris-damaged, worn, or stripped at the hub.
When to Replace
- Noticeable loss of flow/pressure after confirming baskets, filter, and plumbing are clear
- Cracked hub, broken vanes, or excessive wear at the impeller eye
- Impeller is seized from debris or stripped on the shaft
- Unusual wet-end noise traced to impeller/diffuser damage
Installation Notes
- Disconnect power at the breaker and relieve system pressure before opening the pump.
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Replace the mechanical shaft seal whenever the impeller is removed to help prevent leaks into the motor.
- Inspect the diffuser and volute for cracks/scoring; damaged wet-end parts can reduce performance and shorten impeller life.
- Install the required impeller screw (C3012) if your configuration uses it; do not reuse a stripped or corroded screw.
- During reassembly, keep O-rings clean, seated evenly, and lightly lubricated with pool-safe silicone lubricant.
Maintenance Tip
Impeller damage is often caused by restricted suction or debris bypassing the basket. Keep the pump basket clean, maintain proper water level, and address suction-side air leaks early to reduce cavitation and protect the impeller, diffuser, and shaft seal.
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