Original A/C Service Port Caps? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**kna4977** · 11-22-2024, 09:23 PM

What did they look like? Brass or aluminum? Acorn or ribbed?

**kna4977** · 11-27-2024, 03:53 PM

Anyone know and maybe have a pic?

Orange Crate · 11-27-2024, 04:48 PM

Take a look at A/C sites. I have new ones on my new POA valve and new "muffler" connected to the new compressor. Mine are plastic.

Wrenchbender Ret · 11-27-2024, 10:56 PM

I have a completely original 72. It still has the rubber plug in the sight glass. I can take a look at it in the next day or 2 & see what they are.

George

**Richard** · 11-27-2024, 11:13 PM

IIRC they are just a cap like these https://www.amazon.com/LTWFITTING-Br.../dp/B00MP2U9BQ

**kna4977** · 11-28-2024, 12:21 PM

Quote:

Originally Posted by Richard

IIRC they are just a cap like these https://www.amazon.com/LTWFITTING-Br.../dp/B00MP2U9BQ

That’s what I’ve put on it and what I think is correct. Grabbed a couple off an outdoor a/c unit. Not sure if that’s what was there originally. Reason I ask is what I found here. Brass and aluminum versions. Don’t recall ever seeing these on a system so not sure and want to confirm.

http://thepartguy.com/ac-valvesPOA.htm#CHEVY15-51

**leddzepp** · 11-28-2024, 04:04 PM

I’ve been pulling vintage AC parts at the junkyards for years, imo either cap would be correct. Here are some original poa valves I’ve pulled.

**kna4977** · 11-28-2024, 05:14 PM

Quote:

Originally Posted by leddzepp

I’ve been pulling vintage AC parts at the junkyards for years, imo either cap would be correct. Here are some original poa valves I’ve pulled.

Thanks. Are they always aluminum or did they vary between brass and aluminum?

11-22-2024, 09:23 PM	#1
kna4977 Senior Member Join Date: Jul 2006 Location: Midlothian TX Posts: 481	Original A/C Service Port Caps? What did they look like? Brass or aluminum? Acorn or ribbed?

11-27-2024, 03:53 PM	#2
kna4977 Senior Member Join Date: Jul 2006 Location: Midlothian TX Posts: 481	Re: Original A/C Service Port Caps? Anyone know and maybe have a pic?

11-27-2024, 04:48 PM	#3
Orange Crate Registered User Join Date: Feb 2011 Location: Under the Truck Dreaming Posts: 751	Re: Original A/C Service Port Caps? Take a look at A/C sites. I have new ones on my new POA valve and new "muffler" connected to the new compressor. Mine are plastic. __________________ 72 K20 Custom Camper, D60, 14BFF, full roller 406 TPI w custom built ECU and yes..it has tow hooks...and a 5 speed

11-27-2024, 10:56 PM	#4
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,229	Re: Original A/C Service Port Caps? I have a completely original 72. It still has the rubber plug in the sight glass. I can take a look at it in the next day or 2 & see what they are. George

11-27-2024, 11:13 PM	#5
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,880	Re: Original A/C Service Port Caps? IIRC they are just a cap like these https://www.amazon.com/LTWFITTING-Br.../dp/B00MP2U9BQ __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746

11-28-2024, 04:04 PM	#7
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 20,031	Re: Original A/C Service Port Caps? I’ve been pulling vintage AC parts at the junkyards for years, imo either cap would be correct. Here are some original poa valves I’ve pulled. Attached Images __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul



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