How To Identify the Date Range of a Polaris PB4-60 Booster Pump

In this guide you will learn what to look for in order to identify the version of your PB4-60.There have been three versions of the Polaris PB4-60 over the years. It is important to identify the exact date range in order to select the correct replacement parts. 

Polaris PB4-60 Booster Pump Pre 1994
Polaris PB4-60 Booster Pump 1994-2011
Polaris PB4-60 Booster Pump 2011-Present

1. VOLUTE - Look at the volute. If it looks like the one in the corresponding image for this step, you have the 2011-Current version. If the volute does not look like the corresponding image, you have a 1994-2011 or Pre 1994 model. Proceed to Step 2.

2. MOTOR FRAME - Look for the frame number (FR) on the motor label. If it says 56C (S56C), it is a keyed shaft motor. Those motors were only used on the Pre 1994 models. If the frame says 56CZ (N56CZ), you either have the 1994-2011 model or the motor has been replaced on the Pre 1994 model. Proceed to Step 3.

3. HOSE - The first version of the Polaris PB4-60 used, what looked like, black garden hoses. Starting in 1994 they switched to a white hose with quick disconnect fittings. If you have a 56CZ motor frame and white hoses, you have the 1994-2011 version.

If you have any other questions about pool and spa products please do let us know - we are here to help! 

1 comment



I have a pre 1994 polaris booster pump PB4 that I’m putting a new seal in.
This pump has an adjustable bronze shaft extension on it. It’s held on by alan screws(3).
My concern is adjusting this shaft extension so that the new seal matches up properly.
If I put the extension all the way down the impellar is to tight when I raise the extension
approx 1/32 of an inch the impellar is fine. Parts diagram doesn’t show any kind of washer
to keep this setting from moving.

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