---
product_id: 772035636
title: "TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2017-2021 Honda Civic HO3014146"
brand: "trq"
price: "$254.15"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/772035636-trq-radiator-coolant-reservoir-expansion-tank-overflow-bottle-compatible-2017
store_origin: US
region: United States of America
---

# Pre-assembled for easy install 16 PSI max pressure cap Direct fit, no mods needed TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2017-2021 Honda Civic HO3014146

**Brand:** trq
**Price:** $254.15
**Availability:** ✅ In Stock

## Summary

> 🚗 Upgrade your Civic’s cooling game—fit, function, and flawless performance!

## Quick Answers

- **What is this?** TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2017-2021 Honda Civic HO3014146 by trq
- **How much does it cost?** $254.15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/772035636-trq-radiator-coolant-reservoir-expansion-tank-overflow-bottle-compatible-2017)

## Best For

- trq enthusiasts

## Why This Product

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

## Key Features

- • **Precision Direct Fit:** Engineered for 2017-2021 Honda Civic models—hassle-free replacement with zero guesswork.
- • **Trusted Legacy Brand:** Backed by TRQ’s 25+ years of premium replacement parts expertise and extensive DIY video support.
- • **Complete Cap Included:** Includes a high-quality cap to maintain system integrity and prevent leaks.
- • **Durable Pressurized Design:** Built to withstand up to 16 PSI, ensuring optimal coolant system performance under pressure.
- • **DIY-Ready with Pre-Assembly:** Comes pre-assembled to save you time and effort—get back on the road faster.

## Overview

The TRQ Radiator Coolant Reservoir Expansion Tank is a direct-fit, pressurized replacement part compatible with 2017-2021 Honda Civic models. Featuring a durable plastic construction and a 16 PSI max pressure cap, it comes pre-assembled for easy installation. Backed by TRQ’s 25+ years of trusted quality and supported by comprehensive DIY videos, this reservoir ensures reliable coolant system performance and peace of mind for proactive vehicle maintenance.

## Description

Coolant ReservoirFitmentCompatible with: 2017-21 Honda Civic HatchbackCompatible with: 2018-20 Honda Civic Sedan L4 1.5L Japan Built Models 1st VIN Digit JProduct AttributesCap Maximum Pressure Rating: 16 PSILevel Sensor Included: NoMounting Hardware Included: NoMaterial: PlasticCap Included: YesPressurized: YesReference NumbersHonda: 191015AAK01, 191015AAK01PFMPartslink Numbering System: HO3014146

## Features

- Reference Number(s): HO3014146; 191015AAK01; 191015AAK01PFM
- YOUR TRUSTED DIY VIDEO SOURCE: TRQ is the leading producer of high-quality replacement parts and DIY videos to help you get the job done right. We are committed to providing the best Customer Experience for Compatibility, Quality, Durability, and Ease of Installation with the largest catalog of DIY videos available for replacement parts online. Our mission is to help you "View before you Do" and if the video is not available for this part, we are working on bringing it to you soon!
- TRUST & COMPATIBILITY: TRQ has been well established as the Premium Choice for replacement parts for over 25 years and is committed to providing the best possible shopping experience for Direct Fit Replacement Parts online. Please ensure that you confirm fitment with the desertcart Garage & "desertcartconfirmedfit". Please also read the full compatibility chart in the product description below to ensure compatibility for your vehicle.
- EASE OF INSTALLATION: Save time and effort with pre-assembled components designed as direct replacements for the original equipment, ensuring precise fit and eliminating the need for modifications.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | TRQ |
| Brand | TRQ |
| Model | TRQ ECA63257 Coolant Reservoir |
| Package Dimensions | 25.4 x 25.4 x 25.4 cm; 1.04 kg |
| Item model number | ECA63257 |
| Exterior | Machined |
| Manufacturer part number | ECA63257 |
| Item Weight | 1.04 kg |

## Images

![TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2017-2021 Honda Civic HO3014146 - Image 1](https://m.media-amazon.com/images/I/51UVQsyC8qL.jpg)
![TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2017-2021 Honda Civic HO3014146 - Image 2](https://m.media-amazon.com/images/I/71AmODWbhUL.jpg)
![TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2017-2021 Honda Civic HO3014146 - Image 3](https://m.media-amazon.com/images/I/51T+9gXI1eL.jpg)
![TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2017-2021 Honda Civic HO3014146 - Image 4](https://m.media-amazon.com/images/I/51hNV75X48L.jpg)
![TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2017-2021 Honda Civic HO3014146 - Image 5](https://m.media-amazon.com/images/I/51WM0++127L.jpg)

## Available Options

This product comes in different **Style** options.

## Frequently Bought Together

- TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2017-2021 Honda Civic HO3014146
- ACDelco Professional 252-721 Water Pump Kit
- Gates 33329 OE Type Engine Coolant Thermostat

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/772035636-trq-radiator-coolant-reservoir-expansion-tank-overflow-bottle-compatible-2017](https://www.desertcart.us/products/772035636-trq-radiator-coolant-reservoir-expansion-tank-overflow-bottle-compatible-2017)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-03*