Hayward SPX1600Z4 housing cap screw, 3/8-16 x 2Hayward SPX1600Z4 Housing Cap Screw In stock$1199
Hayward SPX1600Z4 housing cap screw, 3/8-16 x 2
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Hayward SPX1600Z4 Housing Cap Screw

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$1199
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Quick overview

  • Genuine Hayward Factory part SPX1600Z4, in metal.
  • 3/8-16 x 2 The listed thread and length, so it can be checked against the screw you are replacing.
  • Super Pump and Super II Listed as the housing cap screw for the SP1600, SP1600X, SP2600, SP2600X and the Super II SP3000 and SP3000X.
  • Wider list than pumps Also carried under Max-Flo 1800 and 2800, Leslie's Hydramax II, Hayward Super Spa SP-3500 and Jandy Laars Series 2 and Lite heater parts.
  • Corroded heads are common Years of pool chemistry seize these screws, and they usually come out mangled.
  • Replace the whole set If one screw is rusted the rest of the set is the same age and condition.
Full description and specifications ↓

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Product details

The Hayward SPX1600Z4 is the housing cap screw used on the Super Pump and Super II and on a number of other Hayward and Jandy Laars products. It is the genuine Hayward part, given as 3/8-16 x 2.

Where it is used

Hayward lists it under the Super Pump SP1600, SP1600X, SP2600 and SP2600X, and the Super II SP3000 and SP3000X including the Heldor EZ-Flo. The same fastener is carried under the Max-Flo 1800 and 2800, the Leslie's Hydramax II, the Super Spa SP-3500, an HRP sand filter group and several Jandy Laars Series 2 and Lite heater diagrams. That is a broad list for one screw, so measure the one you are replacing against the 3/8-16 x 2 size rather than ordering on the model name alone.

The practical problem

These screws sit in a wet, chlorinated environment for years and then have to come out during a service. Many do not, or they come out with the head chewed. Work them with penetrating oil and time rather than force, because a screw snapped off inside a housing turns a routine job into an extraction. When you do get them out, it is usually worth replacing the whole set: they have all seen the same water and the same heat.

From Pool School

How to Prime a Pool PumpFrom the breaker to a full pot, each manufacturer's time limit, and what to check when it won't catch prime. Read Replace the Pool Pump Motor or the Whole Pump?The manufacturers' tests first, what each repair replaces, and the federal motor rule. Read

Where this part goes

15 Key 15 on the Hayward Super PumpFits every model in the drawing.See it on the diagramAll Hayward Super Pump Parts 38 parts and the drawing13 Key 13 on the Hayward Super II PumpFits every model in the drawing.See it on the diagramAll Hayward Super II Pump Parts 44 parts and the drawing
Specifications
Brand Hayward
Manufacturer part number SPX1600Z4
UPC 610377040174
Type Housing cap screw
Size 3/8-16 x 2
Material Metal
Part type Pool pump part
Listed under Hayward Super Pump SP1600, SP1600X, SP2600, SP2600X; Super II SP3000, SP3000X and Heldor EZ-Flo; Max-Flo 1800 and 2800; Leslie's Hydramax II SP-LE40010 through SP-LE40019; Jandy Laars Lite and Lite2 heaters; Jandy Series 2 heaters
Also shown in parts diagrams for Hayward Super Spa Pump SP-3500 uprated; HRP Sand Filter Parts models HRP 20, 24, 30; Jandy Laars Series 2 ESG millivolt and ESC electronic ignition heaters
Shipping weight 0.1 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which pumps use this screw?
It is listed as the housing cap screw for the Hayward Super Pump SP1600, SP1600X, SP2600 and SP2600X, and the Super II SP3000 and SP3000X. It is also carried under Max-Flo 1800 and 2800, the Leslie's Hydramax II, the Super Spa SP-3500 and several Jandy Laars heater diagrams.
What size is it?
The listing gives it as 3/8-16 x 2. Measure the old screw against that before ordering, since the same pump family uses more than one fastener.
Should I buy one or a set?
This listing is the screw. If one has corroded, the rest holding the same housing have seen identical chemistry and heat, so most people replace them all at once rather than returning to the job.
Mine is seized. Any advice?
Penetrating oil and patience beat force. A screw that snaps in the housing turns a five dollar job into an extraction, and heat is risky next to plastic pump bodies.
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