Tune Up Kit Hayward NorthStar 4000 Series Pumps (Pre-2003) - GOKIT66



Part # GOKIT66

By Aladdin

  4.77 Average  



Part # GOKIT66

Alternate Part #'s 65066, GO KIT 66, PL1066

Product Description

Standard tune up kit for the Hayward Northstar pump includes the shaft seal and all o-rings, gaskets and lubricant.

We highly recommend replacing the shaft seal, o-rings and gaskets when replacing your motor.  If you use your old shaft seal, it will not mate up properly with the new motor and may leak.

This Tune Up Kit Works on These Pumps:

  • All Hayward Northstar Pumps (1998-2002) 1/2 HP - 3 HP single and dual speed models.
  • Hayward Northstar SP4000 Series Pumps (1998-2002)

Tune Up Kit Includes:

  • Diffuser Gasket
  • Pump Lid O-Ring Pre-2003
  • Housing Gasket
  • Motor Shaft Seal
  • Lubricant
  • *The Pump Lid O-Ring Pre-2003 is the only part that is different in this kit. All other parts will fit the Hayward Northstar 1998 to 2007.

For More Pool Pump Motors


?     Asked on 2/18/2021 by Bobby

will this fit a Heyward SP4015x20NS Pump

A  Answered on 2/19/2021 by InyoPools Product Specialist Hector F.

Hi Bobby, ultimately this will depend on the year the pump was manufactured. Using the serial number you can confirm that by contacting Hayward directly using their contact by email page here

?     Asked on 6/30/2018 by

My Impeller has a part number stamped on it "SP4010C". The Shaft seal with the spring fits on it real loose. The Diameter of the Shaft seal with the spring is bigger than the shaft. Should the Shaft seal with the spring on it be snug on Shaft? I was told that "GO-KIT66" was the kit to use.

A  Answered on 6/30/2018 by InyoPools Product Specialist Lennox H.

Hi. The Shaft Seal Assy can fit loose on the motor shaft. Oce the impeller is on it will compress the spring shaft seal making it water tight.  

?     Asked on 5/30/2018 by Ray Hull

Hi I have a Northstar SP4020NS Serial #630A34 A. The pump motor is a two hp Century. I’m not sure of manufacturing year. The shaft seal that comes in the GO KIT66 has a larger inside diameter than the motor shaft so it doesn’t fit properly. Is this the wrong seal? What seal kit do I need?

A  Answered on 6/9/2018 by InyoPools Product Specialist Alex V.

Ray, The GOKIT66 will only fit NorthStar pumps that were manufactured in a specific date range. To ensure you are getting the correct shaft seal, you will need to order the impeller kit which comes with the shaft seal. 

?     Asked on 5/24/2017 by Mike

Would the Go Kit work for my Hayward Northstar Pump? The serial number indicates it's from July 2007.

A  Answered on 5/24/2017 by InyoPools Product Specialist Patrick P.

Hi Mike, no this kit will not work for a 2007 Northstar. You would require this Hayward Northstar Shaft Seal and this Hayward NorthStar Housing Gasket

?     Asked on 2/5/2017 by Randy

I have a Hayward Northstar sp4010ns pump, not sure if it is pre- 2003 or not as the pool was installed in early 2004. Would this seal kit work?

A  Answered on 2/6/2017 by InyoPools Product Specialist Scott W.

Yes, the GOKIT66 would be the correct seal kit for the Northstar before 2007.

?     Asked on 5/28/2016 by Andy

Does this kit include the union O-rings?

A  Answered on 5/28/2016 by InyoPools Product Specialist Joe S.

Hello, it comes with one diffuser oring which can be used as a union oring. You can purchase them under part Oring, Union & Diffuser (spx4000z1).

?     Asked on 5/4/2016 by Bill

how do I know if sp4020x252ns is pre-2003 pump. I have the serial #62CB33

A  Answered on 5/5/2016 by InyoPools Product Specialist Charlie R.

Bill,Unfortunately, only the manufacturer has access to serial number information that can usually tell you things like what year the pump was made. If you are unsure about your pump, we recommend getting in direct contact with Hayward at 888.429.9273

?     Asked on 10/15/2014 by Guest

My pump is not priming even after cleaning impeller. Will purchasing this kit aid in fixing that problem?

A  Answered on 10/15/2014 by InyoPools Product Specialist Patrick P.

The seal kit can help with loss of prime. I can't guarantee that it will solve your problem. The loss of prime could be from an air leak at the valves or plumbing in front of the pump.

?     Asked on 2/13/2012 by Guest

I recently changed my pool motor and gaskets. I made sure to lubricate all the gaskets with vaseline. A few days later water is leaking from the pump. What did I do wrong? Help please!!

A  Answered on 2/13/2012 by InyoPools Product Specialist Patrick P.

You never want to use vaseline on any rubber gaskets or o-rings. Vaseline is petroleum based and will deteriorate the rubber quickly. Whenever you change the motor on a pool pump it is recommended that you replace the gaskets and shaft seal as well. A >Go-kit contains the shaft seal, packet of non-petroleum based lubricant and gaskets you will need for your pump. If you already have the gaskets, you can purchase >Magic Lube.


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