ACDelco GM Original Equipment RC27 (10409635) Radiator Fill Cap

ACDelco GM Original Equipment RC27 (10409635) Radiator Fill Cap

Q: Where is this cap made?

always replace with factory part as much as you can

Q: Will this fit a 1992 silverado 5.7

As far as I know it was. My husband died back in March. I know he didn't send it back.

Q: will it fit 93 corvette

The picture looks nothing like the RC27. It's metal not plastic. Sorry can't help you with the 93 Vette. I used it on a 93 Cadillac Deville with a 4.9L V8. Not sure if it's to your application, but if yours is plastic - this isn't the one for you. - John

Product ID: 10120696

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Details

Brand
ACDelco
Color
Silver
Material
Plastic Metal
Exterior Finish
Machined
Item dimensions L x W x H
2.5 x 2.4 x

🔥Seals & pressurizes cooling system

🚗Fits most GM models

⚙️Precision fit & function

Frequently Bought Together

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Description

🔥 Keep your GM running cool and confident — don’t let your ride miss out!

PRECISION FIT GUARANTEED - Manufactured to meet exact OEM specifications ensuring seamless installation and performance.
UNIVERSAL GM COMPATIBILITY - Engineered to fit a wide range of GM vehicles for ultimate coverage and convenience.
OPTIMAL COOLING PERFORMANCE - Seals and pressurizes your radiator to maintain peak engine temperature and prevent overheating.
PREMIUM AFTERMARKET QUALITY - Crafted with durable plastic-metal materials and a machined finish for lasting reliability.
LIGHTWEIGHT COMPACT DESIGN - At just 2.08 ounces and 2.5 x 2.4 x 1.5 inches, it’s the perfect professional-grade upgrade without bulk.

The ACDelco GM Original Equipment RC27 Radiator Fill Cap is a premium, vehicle-specific replacement part designed to seal and pressurize your cooling system. Built to OEM standards with durable plastic-metal construction and a sleek machined finish, it fits most GM cars, SUVs, and trucks, ensuring optimal engine temperature control and reliable performance.

Specifications

Brand	ACDelco
Color	Silver
Material	Plastic Metal
Exterior Finish	Machined
Item dimensions L x W x H	2.5 x 2.4 x 1.5 inches
Vehicle Service Type	Car,Suv,Truck
Style	Professional
Automotive Fit Type	Vehicle Specific Fit
OEM Part Number	10409635
Manufacturer	ACDelco
UPC	036666946543
Global Trade Identification Number	00036666946543
Model	10409635
Item Weight	2.08 ounces
Product Dimensions	2.5 x 2.4 x 1.5 inches
Item model number	RC27
Is Discontinued By Manufacturer	No
Manufacturer Part Number	10409635
National Stock Number	2930-01-218-8397

Have a Question? See What Others Asked

Where is this cap made?

Will this fit a 1992 silverado 5.7

Please advice what filler neck will suite to this cap - 43mm/56 mm/68mm?

will it fit 93 corvette

Reviews

R**S

It is a OEM part and fits perfectly

Exact part for auto... It works exactly as it should...

23.08.2025

S**I

Oem replacement

Exact fit as advertised. Oem quality. Great price. Easy to install and looks good. Oem fit and quality. No more leaking.

20.08.2025

L**M

Good fit

Works great on my 1992 Chevy s10 truck

13.09.2025

G**A

The Correct Radiator Cap

Great and correct, do not buy junk!

13.09.2025

M**.

Fits and Works Great!

Working well for a 1995 Corvette.

11.08.2025

J**H

Just what i was needing.

Great radiator cap. My old one the spring got weak ans was letting water push into the overflow tank. This is stainless steel and has a strong spring. Worked perfectly!

9.11.2022

R**E

1998 Chevy

Fits my 1998 Chevy Silverado.

31.07.2025

B**L

Fit great

Got great perfect replacement

1.09.2025

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