Wiper motor seal - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BLACK AND BLUE 67-72 · 11-02-2003, 10:57 PM

A while back I asked if any of the parts vendors had a rubber type seal instead of the flat tar like one for the wiper motor, and they had said that the flat tar-like one was the only thing that they made back then for the trucks, well I found a picture of what I was talking about. It is number 3 in the picture and it doesn't look real flat to me it looks like it has the lip to go up in the hole in the firewall that the tar seal doesn't seal!!

BLACK AND BLUE 67-72 · 11-02-2003, 11:05 PM

And another. It's the fat looking bulge on the shaft.

BLACK AND BLUE 67-72 · 11-03-2003, 10:03 PM

Any thoughts or comments from any of you parts guys????

These pics show the seal and it doesn't look too flat like the tar seal, so what is the deal??????

Spoof · 11-03-2003, 10:57 PM

I think you stumped them B&B!

**Tim Christian** · 11-04-2003, 07:27 AM

I do not know of any one making this rather than the tar seal. I f happen across one I will give you a holler. Thanks Tim

**GMCPaul** · 11-04-2003, 08:45 AM

They began using that photo in 1963, the part # from the GM Master Parts Catalog for that actual part pictured is
3819636
When you find a GM dealer that still has a original part #3819636 they give you a tar seal Exactly like the one we stock.
The picture in the master parts catalog looks exactly like yours shown, and it does appear to be a rubber seal with a raised area in center where it would seal closer to shaft from the picture, but buying a part #3819636 will net you a windshield washer pump tar seal.
GMCPaul

BLACK AND BLUE 67-72 · 11-04-2003, 11:16 AM

Cool, thanks Tim. I wish that some of you parts guys could have this seal reproduced, because I beleive it would seal much better. Paul, did the '63's have two speed motors?

**Rich72C10** · 12-26-2020, 05:02 PM

Sorry to dig up a old post but my Wiper Seal, under the dash that is between the motor and firewall, is not reusable (broke in about 1,000 bits). Which do I actually need - kind of confused or should I get both? Both of the below are on GMCPaul's 67-72 Wiper Related page.

67-72 Wiper Motor Rubber Seal Part 18904822

1967-72 Truck, Suburban, Blazer, Jimmy & panel truck Rubber wiper motor seal. Seal located in firewall opening for wiper motor Exactly like OEM.. Manufactured from the highest quality MBR/PVC rubber, with antioxidants & UV ray protectors added added for extreme durability. This grommet seals better than the originals, resists oil & sun damage and will not degrade with time. Replace your motor seal to eliminate that irritating leak under your dash when it rains caused from your original becoming cracked and brittle.

Wiper Motor Seal Part 132102

1967-72 Truck, Suburban, Blazer, Jimmy & panel truck fiber reinforced rubberized tar impregnated wiper motor seal. Seal located between firewall and wiper motor. Replace your motor seal to eliminate that irritating leak under your dash when it rains caused from your original becoming cracked and brittle.

I just bought one from classicheartbeat.com (eBay Store) but then I stumbled on GMCPaul's posting... his post below has me concerned about the rubber one I got from classicheartbeat.com and is not what I am actually needing (between motor and firewall under the dash).

Quote:

Originally Posted by GMCPaul

Whoever sold you guys a rubber windshield wiper motor seal has done you a disservice as the rubber seal will quickly dry out crack & shrink from the underhood temps they become subjected to leading them to leak. The wiper motor seals should be a fiberous type seal thats impregnated with a tar like substance as the fiboruos portion is designed to withstand the high temps in the area of the wiper motor and the tar like substance its impregnated with is designed to seal it to the firewall & motor. Those rubber seals generally crack within the 1st year of use leading to air & water leaks.
Paul Jr @ GMCPauls

**Rich72C10** · 12-26-2020, 05:41 PM

actually, I think I now understand it.

Wiper Motor Rubber Seal Part 18904822, this is goes in the cowl area. Under the wiper arm thingy on the shaft of the motor. The one that I have is so hard I did not realize it used to be rubber.

Wiper Motor Seal Part 132102 is what feel apart in a thousand bits.

So... I need both. Also might as well the the motor Mounting Grommets (19979934-2). Those seem kind of OK but might as well replace those too.

11-02-2003, 10:57 PM	#1
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Wiper motor seal A while back I asked if any of the parts vendors had a rubber type seal instead of the flat tar like one for the wiper motor, and they had said that the flat tar-like one was the only thing that they made back then for the trucks, well I found a picture of what I was talking about. It is number 3 in the picture and it doesn't look real flat to me it looks like it has the lip to go up in the hole in the firewall that the tar seal doesn't seal!! Attached Images __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA Last edited by BLACK AND BLUE 67-72; 11-02-2003 at 10:59 PM.

11-02-2003, 11:05 PM	#2
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	And another. It's the fat looking bulge on the shaft. Attached Images __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

11-03-2003, 10:57 PM	#4
Spoof Registered User Join Date: Jul 2000 Location: Victoria,BC, Canada Posts: 1,300	I think you stumped them B&B! __________________ 71 GMC 1500 LWB

11-04-2003, 08:45 AM	#6
GMCPaul Senior Member Join Date: Mar 2000 Location: Rockville,In. USA Posts: 3,718	They began using that photo in 1963, the part # from the GM Master Parts Catalog for that actual part pictured is 3819636 When you find a GM dealer that still has a original part #3819636 they give you a tar seal Exactly like the one we stock. The picture in the master parts catalog looks exactly like yours shown, and it does appear to be a rubber seal with a raised area in center where it would seal closer to shaft from the picture, but buying a part #3819636 will net you a windshield washer pump tar seal. GMCPaul __________________ Secure Online Catalog for-GMCPauls Truck Parts Email- GMCPAULS@GMAIL.COM

11-04-2003, 11:16 AM	#7
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Cool, thanks Tim. I wish that some of you parts guys could have this seal reproduced, because I beleive it would seal much better. Paul, did the '63's have two speed motors? __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

11-03-2003, 10:03 PM	#3
BLACK AND BLUE 67-72 Firefighter Join Date: Feb 2001 Location: Yellville, Ar, USA Posts: 1,943	Any thoughts or comments from any of you parts guys???? These pics show the seal and it doesn't look too flat like the tar seal, so what is the deal?????? __________________ '72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA

11-04-2003, 07:27 AM	#5
Tim Christian Senior Member Join Date: Dec 1999 Location: TN/VA Posts: 6,388	I do not know of any one making this rather than the tar seal. I f happen across one I will give you a holler. Thanks Tim

12-26-2020, 05:41 PM	#9
Rich72C10 Mr. Cheyenne Join Date: Jun 2020 Location: Kyle, Texas Posts: 1,644	Re: Wiper motor seal actually, I think I now understand it. Wiper Motor Rubber Seal Part 18904822, this is goes in the cowl area. Under the wiper arm thingy on the shaft of the motor. The one that I have is so hard I did not realize it used to be rubber. Wiper Motor Seal Part 132102 is what feel apart in a thousand bits. So... I need both. Also might as well the the motor Mounting Grommets (19979934-2). Those seem kind of OK but might as well replace those too. __________________ Richard *'72 Chevy C10 Cheyenne Super WHT/MED BRONZE/WHT SBC 350 \| TH350 \| LWB \| AC \| Buddy Seats Upgrades:** Tilt \| Front Sway Bar \| Radio \| Sliding Window \| Bed Spare w/Lock Bed Rails \| Full LEDs \| Courtesy Lights \| Tachometer \| Glovebox Lock & Light \| Head Light Relays \| *Upgraded Fully Super Trim



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