Defrost Vents??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

DeBattista · 10-09-2024, 01:13 AM

So, I have been researching and can’t seem to find an answer.

When I purchased my 72 2WD C10 it came with a pretty decent supply of NOS parts the PO had bought for the truck to complete the work he had planned. In that pile of parts were (2) NOS Defrost Vents.
(1) Black LH Vent PN 341756 and (1) Saddle RH Vent PN 3989620

So in all my research on these vents anytime an NOS set or single is for sale, it is always this same combination seems to be prevalent (RH Saddle and LH Black). And I cannot even find a PN for the Black RH vent (Casting numbers on the part are identical: I’ve found photos of original used vents and the number on the part is the same on both the black and saddle vent).

Does anyone know why this might be or have the PN for an NOS original GM RH Defrost Vent. I don’t really want to paint the saddle one cause I’m sure whatever color I paint it with won’t match the black, so I’m contemplating just selling them and buying the aftermarket ones but I know they just won’t fit like these.

**1970cstblazer** · 10-09-2024, 09:11 AM

They are listed as "paint to match". All of the recently available NOS GM vents for the pass side have been tan/saddle, and the drivers side black. I would shoot both with SEM Landau Black if you have a black interior and call it a day. The OEM's do fit the best!

DeBattista · 10-09-2024, 04:10 PM

Quote:

Originally Posted by 1970cstblazer

They are listed as "paint to match". All of the recently available NOS GM vents for the pass side have been tan/saddle, and the drivers side black. I would shoot both with SEM Landau Black if you have a black interior and call it a day. The OEM's do fit the best!

Ahh got it. Okay I thought it was strange. Black paint will be happening thanks for the information.

**PbFut** · 10-09-2024, 03:39 PM

Be careful with the original vents. I suspect the sun backed in a lot of brittle to them. I accidently dropped one and it snapped off a corner. The aftermarket part fit very good.

DeBattista · 10-09-2024, 04:10 PM

Quote:

Originally Posted by PbFut

Be careful with the original vents. I suspect the sun backed in a lot of brittle to them. I accidently dropped one and it snapped off a corner. The aftermarket part fit very good.

No these were still in the original box and stored in the gentleman’s garage not in the truck so no brittleness at all.

10-09-2024, 01:13 AM	#1
DeBattista Registered User Join Date: Jul 2018 Location: South San Francisco, CA Posts: 29	Defrost Vents??? So, I have been researching and can’t seem to find an answer. When I purchased my 72 2WD C10 it came with a pretty decent supply of NOS parts the PO had bought for the truck to complete the work he had planned. In that pile of parts were (2) NOS Defrost Vents. (1) Black LH Vent PN 341756 and (1) Saddle RH Vent PN 3989620 So in all my research on these vents anytime an NOS set or single is for sale, it is always this same combination seems to be prevalent (RH Saddle and LH Black). And I cannot even find a PN for the Black RH vent (Casting numbers on the part are identical: I’ve found photos of original used vents and the number on the part is the same on both the black and saddle vent). Does anyone know why this might be or have the PN for an NOS original GM RH Defrost Vent. I don’t really want to paint the saddle one cause I’m sure whatever color I paint it with won’t match the black, so I’m contemplating just selling them and buying the aftermarket ones but I know they just won’t fit like these.

10-09-2024, 09:11 AM	#2
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,824	Re: Defrost Vents??? They are listed as "paint to match". All of the recently available NOS GM vents for the pass side have been tan/saddle, and the drivers side black. I would shoot both with SEM Landau Black if you have a black interior and call it a day. The OEM's do fit the best! __________________ 1970 K/5 Blazer CST 4WD, Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels

10-09-2024, 03:39 PM	#4
PbFut Senior Member Join Date: Feb 2022 Location: Ca Posts: 629	Re: Defrost Vents??? Be careful with the original vents. I suspect the sun backed in a lot of brittle to them. I accidently dropped one and it snapped off a corner. The aftermarket part fit very good.



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