# My radiator ACDelco caps have different part numbers yet listed to fit car **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** lesabre, buick\ **Created:** [February 5, 2020, 2:26am UTC](https://community.cartalk.com/t/my-radiator-acdelco-caps-have-different-part-numbers-yet-listed-to-fit-car/157936 "2020-02-05T02:26:16Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![lesabre](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/lesabre/32/17221_2.png) [@lesabre](https://community.cartalk.com/u/lesabre)\ **Post date:** [February 5, 2020, 2:26am UTC](https://community.cartalk.com/t/my-radiator-acdelco-caps-have-different-part-numbers-yet-listed-to-fit-car/157936/1 "2020-02-05T02:26:16Z")
**strong text** There is another number stamped on my old cap off my Buick Lesabre 2003 its a ACdelco RC-27 then 25730161 and the ACDelco cap recommended is stamped RC-27 25730158 ? neither one of them have a RC-96 stamped on them check it out on E bay or amazon [25730158 RC96 AC Delco Radiator Cap New for Chevy Olds Le Sabre Chevrolet Impala | eBay](https://www.ebay.com/itm/25730158-RC96-AC-Delco-Radiator-Cap-New-for-Chevy-Olds-Le-Sabre-Chevrolet-Impala/312885674812?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20180816085401%26meid%3D2b1cd1154dbd47f9a12c4b4c8365ab1d%26pid%3D100970%26rk%3D5%26rkt%3D6%26mehot%3Dnone%26sd%3D163056389283%26itm%3D312885674812%26pmt%3D0%26noa%3D1%26pg%3D2380057&_trksid=p2380057.c100970.m5481&_trkparms=pageci%3A8338a933-47b6-11ea-b493-74dbd180baa1%7Cparentrq%3A12f485ea1700a4b7b72d52cfffe9fa3c%7Ciid%3A1) ![RC-27 calls for RC-96](https://global.discourse-cdn.com/cartalk/original/3X/a/1/a16ece40dfa778b8f70f059b615687096022b305.jpeg) ![RC-96 with pn 25730158](https://global.discourse-cdn.com/cartalk/original/3X/4/e/4eed16fa0ce6f05a1575c716ae073868021fb6ca.jpeg) ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [February 5, 2020, 2:34am UTC](https://community.cartalk.com/t/my-radiator-acdelco-caps-have-different-part-numbers-yet-listed-to-fit-car/157936/2 "2020-02-05T02:34:05Z")
A radiator cap is not an expensive item . Just go to your local parts store with the cap you have and let them match and not worry about the numbers. If you get the wrong one from online then you have to send it back usually at your expense . ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [February 5, 2020, 2:59am UTC](https://community.cartalk.com/t/my-radiator-acdelco-caps-have-different-part-numbers-yet-listed-to-fit-car/157936/3 "2020-02-05T02:59:16Z")
25730158 is the part number shown in the GM catalog; [https://www.gmpartscenter.net/oem-parts/gm-cap-asm-rad-fil-25730158/?c=Zz1jb29saW5nLXN5c3RlbSZzPXJhZGlhdG9yLWFuZC1jb21wb25lbnRzJmk9QUEwMDAzNTUmcj00JmE9YnVpY2smbz1sZXNhYnJlJnk9MjAwMyZ0PWN1c3RvbSZlPTMtOGwtdjYtZ2Fz](https://www.gmpartscenter.net/oem-parts/gm-cap-asm-rad-fil-25730158/?c=Zz1jb29saW5nLXN5c3RlbSZzPXJhZGlhdG9yLWFuZC1jb21wb25lbnRzJmk9QUEwMDAzNTUmcj00JmE9YnVpY2smbz1sZXNhYnJlJnk9MjAwMyZ0PWN1c3RvbSZlPTMtOGwtdjYtZ2Fz) ---
**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\ **Post date:** [February 5, 2020, 3:58am UTC](https://community.cartalk.com/t/my-radiator-acdelco-caps-have-different-part-numbers-yet-listed-to-fit-car/157936/4 "2020-02-05T03:58:00Z")
The only difference between an RC-27 and a RC-96 is one of them says “DEX-COOL” like your top picture. Other than that, they are identical and interchangeable. ---
**Author:** ![lesabre](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/lesabre/32/17221_2.png) [@lesabre](https://community.cartalk.com/u/lesabre)\ **Post date:** [February 26, 2020, 12:19pm UTC](https://community.cartalk.com/t/my-radiator-acdelco-caps-have-different-part-numbers-yet-listed-to-fit-car/157936/5 "2020-02-26T12:19:35Z")
yes it kooks like the same ---
**Author:** ![lesabre](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/lesabre/32/17221_2.png) [@lesabre](https://community.cartalk.com/u/lesabre)\ **Post date:** [February 26, 2020, 12:21pm UTC](https://community.cartalk.com/t/my-radiator-acdelco-caps-have-different-part-numbers-yet-listed-to-fit-car/157936/6 "2020-02-26T12:21:30Z")
and does the 3/4 L mean the depth of the cap from the top to the bottom rubber seal? ---
**Author:** ![MikeInNH](https://avatars.discourse-cdn.com/v4/letter/m/a587f6/32.png) [@MikeInNH](https://community.cartalk.com/u/MikeInNH)\ **Post date:** [February 26, 2020, 3:14pm UTC](https://community.cartalk.com/t/my-radiator-acdelco-caps-have-different-part-numbers-yet-listed-to-fit-car/157936/7 "2020-02-26T15:14:07Z")
> [@It\_s\_Me](#): > > The only difference between an RC-27 and a RC-96 is one of them says “DEX-COOL” like your top picture. Why would there be a different radiator cap for Dex-Cool? ---
**Author:** ![FoDaddy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/fodaddy/32/717_2.png) [@FoDaddy](https://community.cartalk.com/u/FoDaddy)\ **Post date:** [February 26, 2020, 5:00pm UTC](https://community.cartalk.com/t/my-radiator-acdelco-caps-have-different-part-numbers-yet-listed-to-fit-car/157936/8 "2020-02-26T17:00:35Z")
probably the exact same part, but since one has “Dex Cool” on it, and the other doesn’t. They both get get differing part numbers. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [February 26, 2020, 5:33pm UTC](https://community.cartalk.com/t/my-radiator-acdelco-caps-have-different-part-numbers-yet-listed-to-fit-car/157936/9 "2020-02-26T17:33:20Z")
> [@MikeInNH](#): > > Why would there be a different radiator cap for Dex-Cool? Maybe for cars that came filled with Dex-cool, to alert the person to use that. ---
**Author:** ![MikeInNH](https://avatars.discourse-cdn.com/v4/letter/m/a587f6/32.png) [@MikeInNH](https://community.cartalk.com/u/MikeInNH)\ **Post date:** [February 26, 2020, 6:42pm UTC](https://community.cartalk.com/t/my-radiator-acdelco-caps-have-different-part-numbers-yet-listed-to-fit-car/157936/10 "2020-02-26T18:42:17Z")
> [@texases](#): > > Maybe for cars that came filled with Dex-cool, to alert the person to use that. That makes sense.