Does this fit on a 2009 chevrolet impala ss v8 5.3 liter ?

I would go to Advance auto website and look up this item and compare the part number to see if it will. It did fit my v8 2006 impala

Is this item actually a 18 psi radiator cap?

Yes. This item is a psi radiator cap.

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ACDelco GM Original Equipment RC111 18 P.S.I. Radiator Cap

Product ID: 268564493

Details

Brand
ACDelco
Colour
Black
Exterior finish
Stainless
Item dimensions L x W x H
6.4 x 6.1 x
Material
Stainless

🔧18 P.S.I. pressure rating

🚗Fits most GM vehicle models

🛡️Stainless steel durable finish

86 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Keep your GM running cool with precision pressure power!

SAFETY FIRST DESIGN - Seals and maintains system pressure to raise coolant boiling point, protecting your engine under pressure.
OEM GRADE RELIABILITY - 100% original ACDelco part ensures perfect fit and trusted performance for GM vehicles.
PRECISION PRESSURE CONTROL - Maintains optimal 18 P.S.I. to boost engine cooling efficiency and prevent overheating.
UNIVERSAL GM COMPATIBILITY - Designed to fit a wide range of GM cars, trucks, and vans for seamless installation.
DURABLE STAINLESS STEEL BUILD - Robust exterior finish resists corrosion and wear, extending radiator cap lifespan.

The ACDelco GM Original Equipment RC111 Radiator Cap is a high-quality, stainless steel component engineered to maintain 18 P.S.I. pressure in your vehicle’s cooling system. Compatible with most GM models, it raises coolant boiling points to enhance engine efficiency and safety, backed by OEM reliability and a trusted brand reputation.

Specifications

ASIN	B000IZ5E1M
Automotive Fit Type	Vehicle Specific Fit
Brand Name	ACDelco
Closure Type	Twist-On
Color	Black
Compatible with Vehicle Type	Car, Truck, Van
Country of Publication	India
Customer Reviews	4.7 4.7 out of 5 stars (486)
Exterior Finish	Stainless Steel
Global Trade Identification Number	00707773127018
Included Components	Radiator Cap
Item Dimensions	6.4 x 6.1 x 3.8 centimeters
Item Type Name	Radiator Cap
Item Weight	0.14 Pounds
Manufacturer	ACDELCO
Manufacturer Part Number	15293434
Material Type	Stainless Steel
Model Number	RC111
Number of Items	1
OEM Equivalent Part Number	15293434
Part Interchange Info	RC111
Style Name	Safety
UPC	707773127018
Unit Count	1 Count

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86 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Romania.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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