---
product_id: 3500940
title: "ACDelco GM Original Equipment RC98 (15075118) 15 P.S.I. Radiator Surge Tank Cap"
brand: "acdelco"
price: "525216₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Ac Delco"
url: https://www.desertcart.vn/products/3500940-acdelco-gm-original-equipment-rc98-15075118-15-p-s-i
store_origin: VN
region: Vietnam
---

# 15 P.S.I. pressure rating Fits most GM vehicle models GM OE quality & durability ACDelco GM Original Equipment RC98 (15075118) 15 P.S.I. Radiator Surge Tank Cap

**Brand:** acdelco
**Price:** 525216₫
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your engine cool and your ride flawless with GM’s trusted surge tank cap!

## Quick Answers

- **What is this?** ACDelco GM Original Equipment RC98 (15075118) 15 P.S.I. Radiator Surge Tank Cap by acdelco
- **How much does it cost?** 525216₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/3500940-acdelco-gm-original-equipment-rc98-15075118-15-p-s-i)

## 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

- • **Leak-Proof Seal:** Engineered to provide a tight, secure seal preventing coolant leaks and overheating risks.
- • **Effortless Upgrade:** Easy to install, restoring your cooling system’s peak performance with trusted GM standards.
- • **Seamless GM Compatibility:** Designed to fit a wide range of GM vehicles for hassle-free installation and perfect fit.
- • **Precision Pressure Control:** Maintains optimal 15 P.S.I. to boost coolant boiling point and engine efficiency.
- • **Factory-Recommended Reliability:** Genuine GM replacement ensures OEM-level quality, safety, and durability.

## Overview

The ACDelco GM Original Equipment RC98 Radiator Surge Tank Cap is a genuine GM replacement part engineered to maintain 15 P.S.I. pressure in your vehicle’s cooling system. Compatible with most GM models, it raises coolant boiling points to enhance engine efficiency while providing a leak-proof seal. Trusted for its OEM quality, durability, and easy installation, this cap ensures your engine stays protected and performs at its best.

## Description

ACDelco GM Original Equipment RC98 15 P.S.I. Radiator Surge Tank Cap

Review: Perfect Fit and Works Great - This cap fit perfectly on my vehicle and sealed tightly with no leaks. It’s a genuine GM replacement part, so the quality is excellent and it works just like the original. Easy to install and has held pressure with no issues since putting it on. A good, reliable replacement if your old one is worn out or cracked.
Review: Amazing product for the money spent! - Prefix fit for my 2005 Silverado. My old cap had worn out and wasn’t pressurizing properly, replaced it with this one and it fixed the issue. Value for the money spent is top tier.

## 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
- GM-recommended replacement part for your GM vehicle’s original factory component
- Offering the quality, reliability, and durability of GM OE

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000IXRMSM |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #10,970 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Replacement Radiator Standard |
| Brand | ACDelco |
| Color | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,147) |
| Date First Available | September 20, 2007 |
| Exterior Finish | Chrome |
| Global Trade Identification Number | 00021625492063 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.08 ounces |
| Item dimensions L x W x H | 2.44 x 2.44 x 1.44 inches |
| Item model number | RC98 |
| Manufacturer | AC Delco |
| Manufacturer Part Number | 15075118 |
| Model | 15075118 |
| OEM Part Number | 15075118 |
| Product Dimensions | 2.44 x 2.44 x 1.44 inches |
| Style | Safety |
| UPC | 021625492063 |
| Vehicle Service Type | Car |

## Product Details

- **Brand:** ACDelco
- **Color:** Black
- **Exterior Finish:** Chrome
- **Item dimensions L x W x H:** 2.44 x 2.44 x 1.44 inches
- **Vehicle Service Type:** Car

## Images

![ACDelco GM Original Equipment RC98 (15075118) 15 P.S.I. Radiator Surge Tank Cap - Image 1](https://m.media-amazon.com/images/I/61PyZKakFsL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect Fit and Works Great
*by M***M on November 4, 2025*

This cap fit perfectly on my vehicle and sealed tightly with no leaks. It’s a genuine GM replacement part, so the quality is excellent and it works just like the original. Easy to install and has held pressure with no issues since putting it on. A good, reliable replacement if your old one is worn out or cracked.

### ⭐⭐⭐⭐⭐ Amazing product for the money spent!
*by T***E on February 2, 2026*

Prefix fit for my 2005 Silverado. My old cap had worn out and wasn’t pressurizing properly, replaced it with this one and it fixed the issue. Value for the money spent is top tier.

### ⭐⭐⭐⭐⭐ Are you routinely having a drop in coolant level? READ THIS
*by B***T on February 7, 2016*

First off, it's an OEM part. It's what the manufacturer spec'd for my 2005 Silverado. Secondly, it's fairly priced. I, like many others, had the problem of disappearing coolant. Top off the coolant, and in a few short cold/hot cycles (driving it and then letting it cool down overnight, driving again), my coolant level started to drop. Top it off again, drive it a few times, and the level would drop. It progressively got worse over the course of about 25,000 miles. When the problem first started I would get about 1,200 - 1,500 miles before a coolant drop would be noticeable. Over the course of the 25,000 +/- miles that range dropped to under 500 miles. Since replacement of this expansion reservoir cap, this problem has stopped. I couldn't tell you how many hours I spent trying to chase down the source of this problem. Checking hoses, checking the heater core, the radiator...even crawling around trying to find signs of a leak on the block. Then worrying about the fear of internal issues. $12 fix. Problem solved. What fails on the factory cap? The dual o-rings allow vapor "blow off" as those o-rings deteriorate with age. That vapor or condensated water is part of your "50/50 mix" of antifreeze running in your system. So basically the water "blows off" in a vapor form leaving behind only the antifreeze. This creates a liquid level drop. Hope this helps somebody with the same issue. It's plagued GM owners for quite a few years.

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-06-03*