154412 Pentair 2" Internal Bulkhead Locknut for Pool Filters

Marsoni

M251S

$14.99

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

154412 Pentair 2" Internal Bulkhead Locknut for Pool FiltersMaintain a tight, drip free plumbing connection inside your Pentair filter with the genuine 154412 Internal Bulkhead Locknut. This 2 inch locknut is purpose built for Pentair Triton II, Nautilus, FNS, and SM & SMBW 4000 series sand filters. It threads securely onto the internal bulkhead fitting, creating a firm seal that prevents bypassing and supports consistent water flow through the filter media. Periodic inspection and replacement of this locknut

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This kit had every single piece needed for my Alpha water pump - and many I didn't need. I guess it fits basically all the different versions out there. I remember when the single kits cost more and had much less. This is a good high-quality alternative. Stock up on them now - you'll need one eventually.

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Reviewed in the United States on July 28, 2025

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Austin Williams

Carnegie, US

★★★★★ 5

Great bang for your buck!

Swapped out my old impeller and this helped fix my overheating issue. Super high quality, fit like a glove. If you know what you’re doing it’ll take you an hour tops. Super solid for the price! Fit into my 1990 alpha one gen 1 outdrive on my 4.3 Mercruiser.

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Reviewed in the United States on June 22, 2025

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Jesse Simpson

Phoenix, US

★★★★★ 4

Decent Kit

It's a pretty decent kit. Comes with all the lower unit options whether yours needs that particular part or not.

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Reviewed in the United States on June 22, 2025

Verified Purchase

Eli