1AACD00054-Radiator Cap ACDelco RC27
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Replaces

8

1978 Dodge Diplomat L6 3.7L with 2BBL Carburetor 8th Vin Digit D Radiator Cap ACDelco RC27

AC DELCO Radiator Cap RC27
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$ 29.95
$45.95
35% OFF
$45.95
35% OFF
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AC DELCO
RC27
In Stock

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AC DELCO
RC27
In Stock
Product Reviews
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4.88/ 5.0 8
Basic part, HUGE difference.
Bill
June 11, 2018
Had an overheating issue with my Camaro. Looked online, and the suggestion was to replace the Rad cap. Went to a national retailer, and bought a after market cap. Fitment was loose, and issue was not solved. Went to the dealer, didnt have an AC Delco cap in stock, and was $$$$, and was 3-5 days out. Checked 1a, in stock, cheap as hell, and had it in 2 days! (and didnt pay for express shipping). Problem solved!
Guy
November 21, 2021
Exact fit
Duane
July 18, 2022
Works good I hope you can start including it with the radiator because stick caps dont work on your radiators but together they work great
Tyler
November 23, 2022
Arrived in timely fashion reasonably priced and functions as indicated
Great part
Moises
April 10, 2024
Great Quality!!
Steve
April 23, 2024
Cap fit perfectly...stopped the radiator leak.
Another successful purchase from 1A Auto
Dustin
April 30, 2024
as ordered and fit perfectly in my 1995 GMC Sierra
Perfect fit
Charles
May 24, 2024
Fits perfectly on new radiator.
Customer Q&A
Will the same radiator cap work on a 2.8 engine ?
June 14, 2022
Daryl H
10
Please enter your vehicle's year make and model in the search bar at the top of the page. This will display parts guaranteed to fit your vehicle. Just be sure to verify all of the information shown in the Vehicle Fit tab before ordering.
June 14, 2022
Emma F
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Before proceeding,

select your Vehicle, to verify this Part will fit.

This part will only fit a 1978 Dodge Diplomat with these options.

Before proceeding,

select your Vehicle, to verify this Part will fit.

This part will only fit a 1978 Dodge Diplomat with these options.