---
product_id: 268564493
title: "ACDelco GM Original Equipment RC111 18 P.S.I. Radiator Cap"
brand: "acdelco"
price: "HK$278"
currency: HKD
in_stock: true
reviews_count: 5
category: "Ac Delco"
url: https://www.desertcart.hk/products/268564493-acdelco-gm-original-equipment-rc111-18-p-s-i-radiator
store_origin: HK
region: Hong Kong
---

# 18 P.S.I. pressure rating Stainless steel durability OEM GM fit & reliability ACDelco GM Original Equipment RC111 18 P.S.I. Radiator Cap

**Brand:** acdelco
**Price:** HK$278
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your engine cool, your ride smooth, and your confidence high!

## Quick Answers

- **What is this?** ACDelco GM Original Equipment RC111 18 P.S.I. Radiator Cap by acdelco
- **How much does it cost?** HK$278 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/268564493-acdelco-gm-original-equipment-rc111-18-p-s-i-radiator)

## Best For

- acdelco enthusiasts

## Why This Product

- Trusted acdelco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by Thousands of Drivers:** Rated 4.7 stars by 450+ users who rely on it for consistent, worry-free cooling system performance.
- • **Precision OEM Fit for GM Vehicles:** Seamlessly compatible with most GM models, ensuring hassle-free installation and optimal sealing.
- • **Built to Last with Stainless Steel:** Durable exterior resists corrosion and wear, keeping your cooling system secure season after season.
- • **Maintain System Pressure Like a Pro:** Keeps your cooling system pressurized at 18 P.S.I., preventing leaks and engine damage.
- • **Boost Your Engine’s Cool Efficiency:** Raises coolant boiling point to prevent overheating and maintain peak performance.

## Overview

The ACDelco GM Original Equipment RC111 Radiator Cap is a high-quality, stainless steel OEM part designed to maintain 18 P.S.I. pressure in your vehicle’s cooling system. Compatible with most GM models, it raises the boiling point of engine coolant to prevent overheating, ensuring reliable engine efficiency and durability. Trusted by hundreds of drivers with a 4.7-star rating, this cap delivers long-lasting performance and peace of mind.

## Description

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

Review: It’s an OEM part for my Chevy Impala 2006 3.5L by GM. It works just fine, it keeps my cooling system pressurized properly, I can feel the hoses get tight. No leaks. Ops check good at this time.
Review: Worked. Cooling system holds pressure. Have be able to ignore this issue ever since.

## Features

- Seal and maintain pressure on the cooling system for vehicle safety
- Raise the boiling point of the engine coolant to maintain efficiency
- Fit most models of GM vehicles for expanded coverage

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000IZ5E1M |
| Brand | ACDelco |
| Customer Reviews | 4.7 4.7 out of 5 stars (450) |
| Date First Available | 1 January 2024 |
| Exterior | Stainless Steel |
| Item Weight | 63.5 g |
| Item model number | RC111 |
| Manufacturer | ACDELCO |
| Manufacturer Part Number | 15293434 |
| Model | Radiator Cap |
| OEM Part Number | 15293434 |
| Product Dimensions | 6.35 x 6.1 x 3.81 cm; 63.5 g |

## Product Details

- **Brand:** ACDelco
- **Colour:** Black
- **Exterior finish:** Stainless Steel
- **Item dimensions L x W x H:** 6.4 x 6.1 x 3.8 centimeters
- **Material:** Stainless Steel

## Images

![ACDelco GM Original Equipment RC111 18 P.S.I. Radiator Cap - Image 1](https://m.media-amazon.com/images/I/716nn6T0loL.jpg)

## Questions & Answers

**Q: Does this fit on a 2009 chevrolet impala ss v8 5.3 liter ?**
A: 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

**Q: Is this item actually a 18 psi radiator cap?**
A: Yes. This item is a psi radiator cap.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***T on 12 November 2025*

It’s an OEM part for my Chevy Impala 2006 3.5L by GM. It works just fine, it keeps my cooling system pressurized properly, I can feel the hoses get tight. No leaks. Ops check good at this time.

### ⭐⭐⭐⭐⭐ Review
*by P***N on 6 October 2025*

Worked. Cooling system holds pressure. Have be able to ignore this issue ever since.

### ⭐⭐⭐⭐⭐ Review
*by D***O on 1 January 2026*

Perfecto

## Frequently Bought Together

- ACDelco GM Original Equipment RC111 18 P.S.I. Radiator Cap
- Dorman 902-696 Engine Coolant Filler Neck Compatible with Select Models
- MotoRad 511-185 Engine Coolant Thermostat

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**Shop now:** [https://www.desertcart.hk/products/268564493-acdelco-gm-original-equipment-rc111-18-p-s-i-radiator](https://www.desertcart.hk/products/268564493-acdelco-gm-original-equipment-rc111-18-p-s-i-radiator)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-04*