Sending Unit Gasket - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**cwcarpenter98** · 01-23-2022, 08:04 PM

Ok, I know I can get a new gasket from all the usual aftermarket suppliers. I even found the GM part number (1516395), and there's a bunch of them on Ebay.

But, mine is leaking now, and Frankentruck is my only vehicle with me in Milledgeville. I was hoping that maybe I could find something local tomorrow rather than having to wait on shipping. If I can't find something that might work locally, I'll be ordering a new one and just keeping a window open when I drive

Has anyone found a universal gasket that works for the stock sending unit?

**Warrens69GMC** · 01-23-2022, 08:11 PM

Maybe LO01?
https://www.amazon.com/Spectra-Premi.../dp/B001O9W5Q8

**cwcarpenter98** · 01-23-2022, 08:27 PM

Quote:

Originally Posted by Warrens69GMC

Maybe LO01?
https://www.amazon.com/Spectra-Premi.../dp/B001O9W5Q8

That looks like a lock ring style one. Mine is a 5 bolt style gasket like this: https://www.ebay.com/itm/32450326303...4AAOSwdPxgPVky

**The Rocknrod** · 01-23-2022, 11:57 PM

Is there a parts store near you?
https://www.napaonline.com/en/p/BK_7012378

**cwcarpenter98** · 01-24-2022, 12:33 AM

Quote:

Originally Posted by The Rocknrod

Is there a parts store near you?
https://www.napaonline.com/en/p/BK_7012378

Hmm, that just might work. I'll have to see if the bolt holes line up. Hopefully they do. Thanks!

**60short** · 01-24-2022, 12:54 AM

Might be able to grab a piece of cork gasket material and make your own as well...

**cwcarpenter98** · 01-24-2022, 09:58 AM

Quote:

Originally Posted by 60short

Might be able to grab a piece of cork gasket material and make your own as well...

I didn't think of that, but yes, that's a good option as well, thanks

**cwcarpenter98** · 01-25-2022, 04:35 PM

Welp, the float sunk again, so that changed my plans. I tried to fix it about a month ago by soldering it, but that didn't work for me. When I pulled the sending unit out of the tank and moved the arm, the gauge moved correctly. I could also hear gas sloshing around in the float

Since I had to order a new float, I decided to order a box of 5 seals from the ebay link in my earlier post. Both the float and gaskets should be here on Friday. I read some reviews on Summit racing about a plastic float that many people are using with old sending units. Several people mentioned using it successfully on 67-72 trucks, so I'm going to try it on my truck too. I'll report back on Friday if it fits or not, but I bet it will fit.

I will stop by napa once I have the correct seal to see if the bolt holes will line up to the one in the link The_Rocknrod provided in case anyone in the future runs into the same problem

**The Rocknrod** · 01-25-2022, 04:37 PM

Ya sinking floats blow chunks.

**cwcarpenter98** · 01-25-2022, 05:23 PM

Quote:

Originally Posted by The Rocknrod

Ya sinking floats blow chunks.

They really do

It was funny when I put it back in after testing. A bunch of air came bubbling to the top of the tank

**cwcarpenter98** · 01-29-2022, 10:55 PM

The big sad has happened.
My NOS gaskets are somewhere around Atlanta, but don't seem to be on the right track. They were supposed to show up yesterday, but they "left" the Atlanta distribution center at 3 different times throughout the day. Wound up in the Peachtree distribution center this afternoon, but haven't left there yet. We shall see when they actually decide to show up :wah:

The float did show up and looks about the correct shape. I won't know for sure until the gaskets show up cause the remainder of the gasket on the tank doesn't have another removal and reinstall left in it

**cwcarpenter98** · 02-01-2022, 04:48 PM

Yay, NOS parts

Was supposed to be 5 in there, so the Ebay seller is going to send me the missing one since I paid for 5. Hopefully going to have some time later this week to get the new float and gasket installed

**The Rocknrod** · 02-01-2022, 06:37 PM

The fit. Compare the Napa one?

**cwcarpenter98** · 02-01-2022, 10:08 PM

Quote:

Originally Posted by The Rocknrod

The fit. Compare the Napa one?

Not sure yet. Probably won't be able to check with the Napa one until later this week

**The Rocknrod** · 02-01-2022, 10:10 PM

Quote:

Originally Posted by cwcarpenter98

Not sure yet. Probably won't be able to check with the Napa one until later this week

Oh I thought you already bought it. No biggie.

**cwcarpenter98** · 02-01-2022, 10:14 PM

Quote:

Originally Posted by The Rocknrod

Oh I thought you already bought it. No biggie.

I got 5 NOS gaskets for a couple dollars more than the single at Napa, so I decided to just wait until the NOS ones showed up to compare with the Napa one in store. Of course, USPS tried to loose the package for a couple days, so that hampered my progress

**cwcarpenter98** · 02-02-2022, 05:08 PM

Ok, so I thought my local napa had one in stock, but they didn't. I was able to place the NOS gasket up against a picture, and the bolt holes did line up.

If we can confirm that the stock gasket is considered an SAE 5 bolt pattern, then the Napa one would fit

**The Rocknrod** · 02-02-2022, 05:10 PM

I bought a linear float type sender from Summit that was a 5 bolt and it fit fine.

**cwcarpenter98** · 02-02-2022, 06:12 PM

It probably is an SAE 5 bolt sending unit then.
Now I'm thinking my dad's boat has the same bolt pattern too. I'll have to take the gaskets home with me next time I go home and see if they match

01-23-2022, 08:04 PM	#1
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,492	Sending Unit Gasket Ok, I know I can get a new gasket from all the usual aftermarket suppliers. I even found the GM part number (1516395), and there's a bunch of them on Ebay. But, mine is leaking now, and Frankentruck is my only vehicle with me in Milledgeville. I was hoping that maybe I could find something local tomorrow rather than having to wait on shipping. If I can't find something that might work locally, I'll be ordering a new one and just keeping a window open when I drive Has anyone found a universal gasket that works for the stock sending unit? __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

01-23-2022, 08:11 PM	#2
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,625	Re: Sending Unit Gasket Maybe LO01? https://www.amazon.com/Spectra-Premi.../dp/B001O9W5Q8 __________________ 1969 307, t350 1950 Chevy Wagon 1978 Big 10 1967 C10, 250,3-OTT

01-23-2022, 11:57 PM	#4
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Sending Unit Gasket Is there a parts store near you? https://www.napaonline.com/en/p/BK_7012378 __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

01-24-2022, 12:54 AM	#6
60short Revitalizing a 6T C10 Join Date: Aug 2017 Location: Santa Barbara, CA Posts: 223	Re: Sending Unit Gasket Might be able to grab a piece of cork gasket material and make your own as well... __________________ 1960 C-10 Apache- "Rusty the Redneck Reject" 1/2 Ton short bed step side. 350 crate motor, 3 speed manual (floor shifted) MKII - Buddy Buckets and Glass Packs 20+ year long term project in process Lots of Rust, more memories... Build Thread

01-25-2022, 04:35 PM	#8
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,492	Re: Sending Unit Gasket Welp, the float sunk again, so that changed my plans. I tried to fix it about a month ago by soldering it, but that didn't work for me. When I pulled the sending unit out of the tank and moved the arm, the gauge moved correctly. I could also hear gas sloshing around in the float Since I had to order a new float, I decided to order a box of 5 seals from the ebay link in my earlier post. Both the float and gaskets should be here on Friday. I read some reviews on Summit racing about a plastic float that many people are using with old sending units. Several people mentioned using it successfully on 67-72 trucks, so I'm going to try it on my truck too. I'll report back on Friday if it fits or not, but I bet it will fit. I will stop by napa once I have the correct seal to see if the bolt holes will line up to the one in the link The_Rocknrod provided in case anyone in the future runs into the same problem __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

01-25-2022, 04:37 PM	#9
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Sending Unit Gasket Ya sinking floats blow chunks. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

01-29-2022, 10:55 PM	#11
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,492	Re: Sending Unit Gasket The big sad has happened. My NOS gaskets are somewhere around Atlanta, but don't seem to be on the right track. They were supposed to show up yesterday, but they "left" the Atlanta distribution center at 3 different times throughout the day. Wound up in the Peachtree distribution center this afternoon, but haven't left there yet. We shall see when they actually decide to show up :wah: The float did show up and looks about the correct shape. I won't know for sure until the gaskets show up cause the remainder of the gasket on the tank doesn't have another removal and reinstall left in it __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

02-01-2022, 04:48 PM	#12
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,492	Re: Sending Unit Gasket Yay, NOS parts Was supposed to be 5 in there, so the Ebay seller is going to send me the missing one since I paid for 5. Hopefully going to have some time later this week to get the new float and gasket installed Attached Images __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

02-01-2022, 06:37 PM	#13
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Sending Unit Gasket The fit. Compare the Napa one? __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

02-02-2022, 05:08 PM	#17
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,492	Re: Sending Unit Gasket Ok, so I thought my local napa had one in stock, but they didn't. I was able to place the NOS gasket up against a picture, and the bolt holes did line up. If we can confirm that the stock gasket is considered an SAE 5 bolt pattern, then the Napa one would fit __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson

02-02-2022, 05:10 PM	#18
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Sending Unit Gasket I bought a linear float type sender from Summit that was a 5 bolt and it fit fine. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

02-02-2022, 06:12 PM	#19
cwcarpenter98 Senior Member Join Date: Jan 2018 Location: Hickory Flat, GA Posts: 4,492	Re: Sending Unit Gasket It probably is an SAE 5 bolt sending unit then. Now I'm thinking my dad's boat has the same bolt pattern too. I'll have to take the gaskets home with me next time I go home and see if they match __________________ Christian Carpenter 1963 C10 - Frankentruck 283, Muncie 3 speed with overdrive Overdrive wiring here 1963-ish truck bed trailer - Half-Wit 1981 C10 - Penny 305, th350 --> Soon to be 350, Saginaw 4 speed 1995 Dodge Dakota Sport "I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson



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