---
product_id: 48181814
title: "K&N 33-2451 Replacement Air Filter,Heather Red"
brand: "k&n"
price: "₱10218"
currency: PHP
in_stock: false
reviews_count: 13
category: "K&N"
url: https://www.desertcart.ph/products/48181814-k-and-n-33-2451-replacement-air-filter-heather-red
store_origin: PH
region: Philippines
---

# 5% MPG boost Eco-friendly replace vs. clean Million-mile warranty K&N 33-2451 Replacement Air Filter,Heather Red

**Brand:** k&n
**Price:** ₱10218
**Availability:** ❌ Out of Stock

## Summary

> ⛽ Elevate your drive with power, efficiency, and style.

## Quick Answers

- **What is this?** K&N 33-2451 Replacement Air Filter,Heather Red by k&n
- **How much does it cost?** ₱10218 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/48181814-k-and-n-33-2451-replacement-air-filter-heather-red)

## Best For

- k&n enthusiasts

## Why This Product

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

## Key Features

- • **Eco-Conscious Upgrade:** Reduce waste with a filter designed for longevity and environmental care.
- • **Effortless Maintenance:** Replace, don’t clean—cut downtime and keep your engine breathing fresh.
- • **Drive Smoother, Save Fuel:** Experience up to 5% better fuel efficiency on every journey.
- • **Built to Last a Million Miles:** Unmatched durability with a warranty that outlives your ride.
- • **Precision Fit for Peak Performance:** Engineered to OEM specs for seamless installation and optimal airflow.

## Overview

The K&N 33-2451 Replacement Air Filter in Heather Red offers a precision-engineered upgrade that improves fuel efficiency by up to 5%, enhances low-end power and smoothness, and comes backed by a million-mile warranty. Designed for easy replacement rather than cleaning, it supports eco-friendly maintenance while fitting perfectly to OEM specifications for reliable, long-lasting performance.

## Description

Buy K&N 33-2451 Replacement Air Filter,Heather Red at desertcart UK. Free delivery on eligible orders.

Review: 2012 i40 with 190k miles approves - I have bought these style of filters for 3 cars now - a very nippy Audi TT, a Nissan Qashqai and now an elderly i40 estate. Although it obviously doesn't give any noticeable increase in acceleration, it does seem to get me about 5% increase on MPG. What's more noticeable in all the cars is the low end power, the smoothness of the drives and how much less I need to change down a gear when slowing through village roads (I live in a rural area). It's just a *nicer* drive even on the 1.7 diesel with 190k miles (305k km!) on it. Plus not cleaning vs replacing seems slightly better for the environment.
Review: Million mile warranty. Never needs changed for the price ... - Million mile warranty. Never needs changed for the price of 2 or 3 standard ones. Get the re-oiling solution as well, had difficulty finding it locally near Glasgow, Scotland.

## Features

- K&N 33-2451 Replacement Air Filter
- K&n
- 33-2451 good

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003LS15XY |
| Best Sellers Rank | 161,708 in Automotive ( See Top 100 in Automotive ) 1,186 in Car Air Engine Air Filters |
| Brand | K&N |
| Customer Reviews | 4.5 4.5 out of 5 stars (786) |
| Date First Available | 1 Jan. 2008 |
| Exterior | Machined |
| Item Weight | 363 g |
| Item model number | 33-2451 |
| Manufacturer | K&N |
| Manufacturer part number | 33-2451 |
| Model | Replacement Air Filter |
| OEM Part Number | 281131R100, 281132S000, 281132S100, 281133S000, 281133X000, 281133Z100, K281133X000 |
| Product Dimensions | 1.7 x 7.7 x 13.5 cm; 362.87 g |
| Safety rating | Não aplicável |

## Product Details

- **Brand:** K&N
- **Fit type:** Vehicle Specific Fit
- **OEM part number:** 281131R100, 281132S000, 281132S100, 281133S000, 281133X000, 281133Z100, K281133X000
- **Product dimensions:** 25.7L x 16.5W x 2.2H centimetres
- **Product grade:** Performance Part

## Images

![K&N 33-2451 Replacement Air Filter,Heather Red - Image 1](https://m.media-amazon.com/images/I/51-gydqLWGL.jpg)
![K&N 33-2451 Replacement Air Filter,Heather Red - Image 2](https://m.media-amazon.com/images/I/71168sffaJL.jpg)
![K&N 33-2451 Replacement Air Filter,Heather Red - Image 3](https://m.media-amazon.com/images/I/71zMIHz74lL.jpg)
![K&N 33-2451 Replacement Air Filter,Heather Red - Image 4](https://m.media-amazon.com/images/I/81+bIJ1I0jL.jpg)
![K&N 33-2451 Replacement Air Filter,Heather Red - Image 5](https://m.media-amazon.com/images/I/818Xb0PBRIL.jpg)

## Questions & Answers

**Q: Will this one fit a 2015 kia proceed 1.6 diesel?**
A: If you enter "Car accessories for a Kia Proceed" in the Amazon Search bar, it will bring up a filter questionnaire to enter the exact  details for your vehicle. Once that is done, you can enter the K & N 33-2451 details and it will tell you if the air filter is compatible with your car.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 2012 i40 with 190k miles approves
*by J***2 on 4 May 2023*

I have bought these style of filters for 3 cars now - a very nippy Audi TT, a Nissan Qashqai and now an elderly i40 estate. Although it obviously doesn't give any noticeable increase in acceleration, it does seem to get me about 5% increase on MPG. What's more noticeable in all the cars is the low end power, the smoothness of the drives and how much less I need to change down a gear when slowing through village roads (I live in a rural area). It's just a *nicer* drive even on the 1.7 diesel with 190k miles (305k km!) on it. Plus not cleaning vs replacing seems slightly better for the environment.

### ⭐⭐⭐⭐⭐ Million mile warranty. Never needs changed for the price ...
*by G***X on 7 March 2016*

Million mile warranty. Never needs changed for the price of 2 or 3 standard ones. Get the re-oiling solution as well, had difficulty finding it locally near Glasgow, Scotland.

### ⭐⭐⭐⭐⭐ Fast delivery Many thanks
*by K***Y on 19 October 2018*

Very good item delivered quickly at a good price.

## Frequently Bought Together

- K&N High-Flow Original Lifetime Engine Air Filter: Increase Power & Acceleration, Washable, Replacement Air Filter: Compatible with 2010-2019 Hyundai/Kia (i40, Elantra, GT, i30, Tucson, Forte) 33-2451
- K&N LIFETIME Cabin Air Filter: Premium, Washable, Clean Air for your Cabin: Compatible with 2008-2020 Hyundai/Kia: (See Product Description for Select Models) VF2037
- K&N Air Filter Cleaning Kit: Aerosol Filter Cleaner and Oil Kit; Restores Engine Air Filter Performance; Service Kit-99-5000, Multi

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**Shop now:** [https://www.desertcart.ph/products/48181814-k-and-n-33-2451-replacement-air-filter-heather-red](https://www.desertcart.ph/products/48181814-k-and-n-33-2451-replacement-air-filter-heather-red)

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-01-25*