Pentair Diffuser for .5HP to 1.5HP Max-E-Pro Series Pumps C1-271P1Z
Pentair
SKU: C1-271P1Z
Pentair Sta-Rite Max-E-Pro Pool Pump Diffuser | C1-271P1Z
The Pentair C1-271P1Z Pool Pump Diffuser is a genuine OEM replacement component designed for compatible Pentair Sta-Rite Max-E-Pro swimming pool pumps.
Installed around the pump impeller, the diffuser helps direct water from the impeller into the pump housing. Its design is an important part of the pump's hydraulic performance and water circulation.
The C1-271P1Z is used in select Max-E-Pro pump configurations, including certain 3/4 HP, 1 HP, and 1-1/2 HP models. The correct diffuser depends on the specific pump model and impeller configuration.
Product Features
- Genuine Pentair OEM: Original manufacturer replacement diffuser.
- Max-E-Pro Compatibility: Designed for select Pentair and Sta-Rite Max-E-Pro pumps.
- Hydraulic Performance: Helps direct water flow from the impeller into the pump housing.
- Durable Construction: Molded thermoplastic pump component.
- Direct Replacement: Replaces the original C1-271P1Z diffuser.
- Individual Component: Sold as one diffuser, not a complete pump assembly.
Product Specifications
- Manufacturer: Pentair / Sta-Rite
- Manufacturer Part Number: C1-271P1Z
- Related Legacy Part Number: C1-271P1
- Product Type: Pool Pump Diffuser
- Compatible Pump Series: Max-E-Pro
- Application: Swimming Pool Pump Wet End
- Material: Thermoplastic
- Parts Diagram Reference: Item #11
- Package Quantity: 1 Diffuser
Compatible Pentair Max-E-Pro Pump Models
The Pentair C1-271P1Z is listed for select Max-E-Pro pump models, including:
- 348150
- P6E6D-205L
- P6R6D-205L
- P6E6E-206L
- P6RA6E-205L
- P6R6E-206L
- P6RA6F-206L
- 345076
- P6R62E3-187
- P6EA6D36-204
- P6EA6E36-205
- P6EA6F36-206
Compatibility Notice: This is not a universal diffuser for every Max-E-Pro pump. Check your pump's complete model number, original diffuser part number, and manufacturer parts diagram before ordering.
What Does a Pool Pump Diffuser Do?
The diffuser is positioned around the impeller inside the pump's wet end.
As the motor rotates the impeller, the diffuser helps guide water through the pump housing, supporting the intended hydraulic flow.
A cracked, worn, or damaged diffuser may affect pump performance and water circulation.
When to Replace Your Pump Diffuser
- Diffuser housing is cracked or broken.
- Internal vanes are damaged.
- Impeller contact has caused excessive wear.
- Diffuser mounting points are damaged.
- The original diffuser is missing or incorrectly fitted.
- Damage is discovered during pump servicing.
Low flow and priming problems can also result from clogged baskets, dirty filters, suction air leaks, worn impellers, and other circulation problems. Inspect the complete pump before replacing parts.
C1-271P1Z vs. C1-271PZ
Pentair uses different diffusers for different Max-E-Pro pump configurations.
- C1-271P1Z: Used in select lower-horsepower and specifically listed Max-E-Pro pump models.
- C1-271PZ: Used in other Max-E-Pro configurations, including certain higher-horsepower models.
- 356359Z: Diffuser used in specified Max-E-Pro DOE pump configurations.
These diffusers should not be considered interchangeable without checking Pentair's model-specific parts documentation.
Related Pentair Pump Replacement Parts
Find additional replacement components at Aqua Pool Supply.
- Pentair U9-374Z – Diffuser O-Ring – Replacement diffuser seal for compatible Max-E-Pro pump assemblies.
- Pentair C105-238PBZ – Pump Impeller – Replacement impeller for specified Max-E-Pro pump configurations.
- Pentair U30-542SSZ – Diffuser Mounting Screw – Mounting screw specified for compatible C1-271P1Z diffuser installations.
Pentair Max-E-Pro Parts Diagram
Identify the correct diffuser and related components using the Pentair Max-E-Pro Pump Parts Diagram at Aqua Pool Supply.
Installation and Maintenance
- Turn off and disconnect electrical power to the pump.
- Disable automatic pump startup.
- Close applicable plumbing valves and relieve system pressure.
- Disassemble the pump wet end according to Pentair's instructions.
- Remove the existing diffuser and inspect the impeller.
- Inspect the diffuser O-ring and replace it if necessary.
- Install the correct C1-271P1Z diffuser.
- Reassemble the pump using the manufacturer's specified fasteners and procedures.
- Prime the pump and inspect for leaks and normal operation.
Package Contents
Includes: One (1) Genuine Pentair C1-271P1Z Max-E-Pro Pool Pump Diffuser.
Not Included: Impeller, shaft seal, seal plate, motor, and other separately sold replacement parts.
Selling Quantity: One individual diffuser.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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