PCM 5.0L GM 305 275HP Drain Plug size?

comanche344

Join Date: Mar 2018

Posts: 30

City & State:
TEXAS

Current Boats:
2000 Pro Air Nautique, PCM 5.0 HO 275HP, Chevy 305
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#1

PCM 5.0L GM 305 275HP Drain Plug size?

04-06-2022, 10:45 AM

So one of my drain plugs on my engine is seized and I'm looking to replace. I've combed through an illustrated parts manual pdf I have, but of course the page that's missing is the one that identifies the part specs for the drain plugs.

2000 Pro Air Nautique
PCM 5.0L GM 305

Does anyone know what the size of the plugs might be?
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NautiqueJeff

A d m i n i s t r a t o r

Join Date: Mar 2002

Posts: 16517

Home Waterway: Lake Norman

City & State:
Mooresville, NC

Current Boats:
2025 SAN G23 PNE 1985 Sea Nautique 1980 Twin-Engine Fish Nautique
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#2

04-06-2022, 07:56 PM

I would bet it is this one.

https://www.nautiqueparts.com/produc...rain-plug-1-4/

I own and operate Silver Cove Marine, which is an inboard boat restoration, service, and sales facility located in Mooresville, North Carolina. We specializes in Nautiques and Correct Crafts, and also provide general service for Nautiques fifteen years old and older.

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Michael Crouse

Join Date: Jun 2017

Posts: 79

City & State:
Iowa

Current Boats:
2000 Ski Nautique
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#3

04-06-2022, 08:32 PM

That looks just like the port side engine drain plug that was on my 5.0 pcm that was in my ski nautique. Starboard side has the knock sensor.
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PCM 5.0L GM 305 275HP Drain Plug size?

PCM 5.0L GM 305 275HP Drain Plug size?

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