Raypak Low NOx Heater Pressure Switch Replacement | 006737F | SW-43-737 by Swimables

Raypak Low NOx Heater Pressure Switch Replacement | 006737F | SW-43-737 by Swimables

Marsoni

M251S

$49.99

Get it in 3 business days with 1 day shipping. Friday, May 29

Raypak Low NOx Heater Pressure Switch Replacement | 006737F | SW-43-737 by SwimablesSafeguard your pool heater with the Swimables Pressure Switch SW 43 737, a critical safety component built for Raypak Low Nox heater models. This switch continuously tracks the water pressure flowing through the heater and triggers an automatic shutdown whenever pressure readings move outside the safe operating window. That automatic cutoff protects both the heat exchanger from damage and swimmers from hazardous conditions. Fabricated from heavy duty

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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This starter has failed after less than one year in use. Used for 1 month last summer then, over the winter I had my boat winterized and upon summerizing it, the starter displayed a "flat" spot where it would not crank unless turned and tried again. It now doesn't turn over my engine. I'd like a refund or replacement. Do not recommend cheap knock offs for boat parts...

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Reviewed in the United States on July 4, 2025

Verified Purchase

Benjamin

West Palm Beach, US

★★★★★ 5

Good starters for the price

So I freaked out a bit when I pulled my old starter and it was a 9 tooth. But after alot of research I found out that this 11 tooth is a direct replacement. I use 2 of these on my boat. They have no problem starting a 7.4l big block. Great value for budget builds.

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Reviewed in the United States on August 11, 2023

Verified Purchase

James V. Bailey II

Whiting, US

★★★★★ 5

Good quality

Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube

Good quality gear oil, works perfectly.

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Reviewed in the United States on April 29, 2026

Verified Purchase

Carb was beautiful once I got it tune in, cranks great runs smooth I would buy it again if needed

Louisville, US

★★★★★ 5

For motorcycles

Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube

Great stuff, good price

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Reviewed in the United States on April 25, 2026

Verified Purchase

JNL

Belleville, US

★★★★★ 5

The best lower unit gear oil I have used

Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube

I have been boating my whole life, this is by far the best gear oil. I use this in my Johnson 115 even though this is technically made by Mercury. I seem to get less if any water intrusion into my gearcase with this oil. If there is any, the oil emulsifies the water and continues to protect the gears. I have had better luck with this than Pennzoil marine or others. Highly recommend. It is a blue color and easy to drain and fill.

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Reviewed in the United States on March 23, 2026