---
product_id: 224607962
title: "Denso 221-3603 Radiator"
brand: "denso"
price: "£421.38"
currency: GBP
in_stock: true
reviews_count: 5
category: "Denso"
url: https://www.desertcart.co.uk/products/224607962-denso-221-3603-radiator
store_origin: GB
region: United Kingdom
---

# Enhances fuel efficiency Boosts engine performance & throttle response Vehicle-specific precision fit Denso 221-3603 Radiator

**Brand:** denso
**Price:** £421.38
**Availability:** ✅ In Stock

## Summary

> 🔥 Cool your engine, heat up your drive!

## Quick Answers

- **What is this?** Denso 221-3603 Radiator by denso
- **How much does it cost?** £421.38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/224607962-denso-221-3603-radiator)

## Best For

- denso enthusiasts

## Why This Product

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

## Key Features

- • **Fuel Efficiency Upgrade:** Designed to support better fuel consumption, saving you money on every mile.
- • **Performance-Driven Cooling:** Optimizes engine temperature to unlock smoother throttle response and power.
- • **Tailored Fit for Your Ride:** Engineered for a seamless, no-hassle installation that feels custom-made.
- • **Trusted Quality from Denso:** Backed by a 4.8-star rating and global manufacturing excellence from Indonesia.
- • **Lightweight Aluminium Build:** Durable yet featherlight, reducing overall vehicle weight for enhanced handling.

## Overview

The Denso 221-3603 Radiator is a vehicle-specific, lightweight aluminium cooling system component designed to improve engine performance and throttle response while enhancing fuel efficiency. With easy installation and trusted Denso quality, it’s the upgrade your ride deserves.

## Description

Increases engine performance and throttle response

Review: Great fit, great price, slid right into the car with no headaches. Would buy again (but hopefully not for this car!)
Review: Fits perfectly in my 2008 Forester. Easy install. Very happy.

## Features

- Efficient Fuel Consumption
- Package Dimensions: 16.5 L x 91.4 H x 63.5 W (centimeters)
- Fit type: Vehicle Specific
- Country of Origin : Indonesia

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004J3AZZE |
| Automotive Fit Type | Vehicle Specific Fit |
| Brand Name | Denso |
| Closure Type | Twist-On |
| Colour | Natural |
| Customer Reviews | 4.8 4.8 out of 5 stars (33) |
| Global Trade Identification Number | 00042511179196 |
| Included Components | RADIATOR |
| Item Type Name | ACCESSORIES |
| Item Weight | 0.01 Ounces |
| Manufacturer | Denso |
| Manufacturer Part Number | 221-3603 |
| Material Type | Aluminium |
| Model Number | 221-3603 |
| OEM Equivalent Part Number | 221-3603 |
| UPC | 042511179196 |
| Unit Count | 1.0 count |

## Product Details

- **Automotive Fit Type:** Vehicle Specific Fit
- **Brand:** Denso
- **Colour:** Natural
- **Item weight:** 0.01 Ounces
- **Material:** Aluminium

## Images

![Denso 221-3603 Radiator - Image 1](https://m.media-amazon.com/images/I/71jOsXh34FL.jpg)
![Denso 221-3603 Radiator - Image 2](https://m.media-amazon.com/images/I/713caEB6NPL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by T***N on 6 June 2024*

Great fit, great price, slid right into the car with no headaches. Would buy again (but hopefully not for this car!)

### ⭐⭐⭐⭐⭐ Review
*by J***N on 30 January 2024*

Fits perfectly in my 2008 Forester. Easy install. Very happy.

### ⭐⭐⭐⭐⭐ Review
*by M***. on 6 March 2022*

I am very happy with this radiator. It shipped quickly, was packaged well, and arrived early. The early arrival helped a lot because it meant my car got back on the road faster. The best part was the radiator fittings fit my 2007 Subaru Forester perfectly. The fittings for the transmission cooler come out of the radiator at 90 degrees, so they fit behind the heat shield and made installation easier. Both the radiators I looked at locally had fittings that came straight out and would not fit behind the shield.

## Frequently Bought Together

- Denso 221-3603 Radiator
- AISIN THF-003 Engine Coolant Thermostat with Gasket - Compatible with Select Saab 9-2X Subaru Tribeca, Baja, Forester, Impreza, Legacy, Outback, SVX, Tribeca
- PEAK OET Extended Life Green Concentrate Antifreeze/Coolant for Asian Vehicles, 1 Gal.

---

## 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.co.uk/products/224607962-denso-221-3603-radiator](https://www.desertcart.co.uk/products/224607962-denso-221-3603-radiator)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-27*