ConcoursMustang Forums
Restoring - General discussions that span across many different groups of years and models => Misc Items => Topic started by: Keith Stem on March 17, 2025, 11:11:50 PM
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In the 65-72 MPAC Section 106, Page 2 shows a Battery Terminal Corrosion Arrestor,
Oil-Impregnated, 11/16 Inch Round Felt Washer, P/N C1AZ-10A717A, For year 65/.
The way the year is indicated, with a /, it appears that a battery terminal arrestor was used from 65 to 72.
Has anyone ever seen this on a production car or is this a dealer service item?
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In the 65-72 MPAC Section 106, Page 2 shows a Battery Terminal Corrosion Arrestor,
Oil-Impregnated, 11/16 Inch Round Felt Washer, P/N C1AZ-10A717A, For year 65/.
The way the year is indicated, with a /, it appears that a battery terminal arrestor was used from 65 to 72.
Has anyone ever seen this on a production car or is this a dealer service item?
Typically a dealer service item. Similar ones were also available at auto parts stores of the period too.
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Thanks Bob, that was my first thought. I was just looking for an experts answer.
Keith
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Thanks Bob, that was my first thought. I was just looking for an experts answer.
Keith
Thanks for the compliment but I am still learning every day.
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I won't dare even consider myself an expert but I did see this part listed in the 68 electrical assembly manual, item 5, in the picture. Suspect I'll need to add this part to my car, correct?
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keep in mind that what is shown there is what was 'intended' to be used/installed. on the line it may not have happened that way.
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Don't worry Dave, we won't count off if you don't have one. No one else has one.
Keith
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Don't worry Dave, we won't count off if you don't have one. No one else has one.
Keith
Thanks Keith.
By the way what do these look like? Are they like the green and red felt ones you get from the auto parts store?
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David
At one time I had a picture of one, but I can't not find it now. I had a written description of it, and it was described as oil-soaked gray, 1-11/16-inch round felt washer, one under each battery terminal. You could probably make one from a pair of red and green corrosion felts. You just have to explain it to any judge other than me.
Keith
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David, if you decide to use one it would be prudent to explain to judges before judging why you put it on along with a copy of that assemblyline manual page.
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By the way what do these look like? Are they like the green and red felt ones you get from the auto parts store?
I have a bunch of NOS ones, they look like felt washers, like what was used at the lower Z-bar connection for manual trans.
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I have a bunch of NOS ones, they look like felt washers, like what was used at the lower Z-bar connection for manual trans.
+1 . Ditto
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I have a bunch of NOS ones, they look like felt washers, like what was used at the lower Z-bar connection for manual trans.
Would you be interested in parting with one Charles? According to the assembly manual there was only one on the positive post.
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Would you be interested in parting with one Charles? According to the assembly manual there was only one on the positive post.
Not at this time, thanks.
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Attached is a picture of a ?typical? Aftermarket version of the Felt Battery Washers. Note that these are usually available in a pack of two, one Red (for the positive terminal), and one Green (for the Negative terminal). These Felt washers have usually been impregnated with some type of ?rust preventative? substance.
A look into the Ford Felt Battery Washers has revealed the following :
ASSEMBLY LINE FELT WASHERS
Standard Part Number 374043-S (Engineering/Identification Number ?) appears in the Mustang Electrical Assembly Manuals in each year of 1964.5/65, 1966, 1967 and 1968. Accompanying each Illustration of same is a note saying that each washer should be saturated ?with M-7C12 Rust Preventive Before Installing Washer to Terminal Post??. It further notes that this should be on ?Positive Terminal Only?. To me, this implies that the Assembly Line Felt Washers were furnished ?Dry?, and Rust Preventive only applied when installing. Additionally, no Price is listed for 374043-S, which also implies that these were Assembly Line items only, and not available as a Service Part.
SERVICE PART FELT WASHERS
In late 1961 (I say ?late? because it does not appear in the 1961 Ford Parts & Accessories Catalog, printed in January of 1961), Ford introduced Part Number C1AZ-10A717-A, ?Washer-Battery Terminal Corrosion Arrestor, 11/16 I.D., Felt. Oil Impregnated? ; quantity required ? 2.TYhis Part and its description appear in each year?s Parts & Accessories Catalog from 1962 through 1967 (and possibly more), as well as in the 1960-68 MPC and the 1965-72 MPC. Interestingly, they do not appear in either the 1973-79 MPC, or in the 1980=89 MPC, implying that Part C1AZ-10A717-A was made obsolete (discontinued) in late 1972 or early 1973 (I have not checked my OSI catalogs yet).
This Felt Washer was available in a 2-pack in 967 for $0.58. Neither the Assembly Manual nor the Parts & Accessories Catalogs, nor the MPC?s show what color the Felt was. Also of interest is the fact that the Assembly Manuals all note ?Positive Post Only?, while all applications in the Parts & Accessories Catalogs and MPC?s show that a quantity of 2 is required.
Finally, it is noteworthy that all the Service Part Felt Washers were Oil Impregnated, while the Assembly Line ones were apparently furnished dry, and were only impregnated with a Rust Preventive when installed.
Hope this helps,
Bob
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Thank for the detailed reply, the MPAC and the assembly manual are not clear as how the washer were used.
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Keith : The Assembly Line Part is considered a "Standard & Utility" (Hardware) Part, Part Number 374043-S, described as a "5/8", Flat, Felt Washer, with an I.D of 0.690', an O.D. of 1.30", and a thickness of 0.125". I have attached a p0icture from part of a page in the 1964.5/ 1965 Electrcal Assembly Manual showing its application.
The Sevice Part (C1AZ-10A717-A) would be similar, and with the identical application, only to both the positive and negative terminal posts.
Hope this helps.
Bob
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Try Amazon - start here -
https://www.amazon.com/s?k=felt+pads&i=garden&crid=3KJZUO31KYAM5&sprefix=felt+pads+%2Cgarden%2C229&ref=nb_sb_noss_2
I got an appointment in 45 minutes so I got to go.
Jim
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Here are a couple of links to felt pad sheets on Amazon. The are listed as 0.120 inch thick. Obviously you need to cut the washer to the right outside diameter, remove the "sticky" from the back, punch a 5/8 to 3/4 inch hole to fit the battery terminal, determine the "finished" color (light materials are easier to make darker than the other way around) and last but not least, figure out what Ford "M-7012 Rust Preventative" is, which may also solve the color question.
https://www.amazon.com/dp/B0CH74GYB8/ref=sspa_dk_detail_3?pf_rd_p=386c274b-4bfe-4421-9052-a1a56db557ab&pf_rd_r=S58ZB4PFW1HY1WKV16BT&pd_rd_wg=4H4QF&pd_rd_w=EzeUY&content-id=amzn1.sym.386c274b-4bfe-4421-9052-a1a56db557ab&pd_rd_r=82af6db7-e2ac-41e3-b898-e958dc5ae35c&s=home-garden&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWxfdGhlbWF0aWM&th=1
https://www.amazon.com/dp/B0BKTB2PM6/ref=sspa_dk_detail_1?pf_rd_p=386c274b-4bfe-4421-9052-a1a56db557ab&pf_rd_r=S58ZB4PFW1HY1WKV16BT&pd_rd_wg=4H4QF&pd_rd_w=EzeUY&content-id=amzn1.sym.386c274b-4bfe-4421-9052-a1a56db557ab&pd_rd_r=82af6db7-e2ac-41e3-b898-e958dc5ae35c&s=home-garden&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWxfdGhlbWF0aWM&th=1
Jim