--- product_id: 41751460 title: "FILTERWEARS F104L For Napa 6637 Donaldson B085011 Baldwin PA2818 Fleetguard AH1141 Fram CA6818 Wix 46637; BLUE" brand: "filterwears" price: "VT13610" currency: VUV in_stock: true reviews_count: 13 category: "Filterwears" url: https://www.desertcart.vu/products/41751460-filterwears-f104l-for-napa-6637-donaldson-b085011-baldwin-pa2818-fleetguard store_origin: VU region: Vanuatu --- # Hydrophobic, water-repellent fabric Heat resistant up to 450°F Blocks particles >0.005 inches FILTERWEARS F104L For Napa 6637 Donaldson B085011 Baldwin PA2818 Fleetguard AH1141 Fram CA6818 Wix 46637; BLUE **Brand:** filterwears **Price:** VT13610 **Availability:** ✅ In Stock ## Summary > 🛠️ Protect your engine’s lifeline with FILTERWEARS – because your ride deserves the best defense! ## Quick Answers - **What is this?** FILTERWEARS F104L For Napa 6637 Donaldson B085011 Baldwin PA2818 Fleetguard AH1141 Fram CA6818 Wix 46637; BLUE by filterwears - **How much does it cost?** VT13610 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/41751460-filterwears-f104l-for-napa-6637-donaldson-b085011-baldwin-pa2818-fleetguard) ## Best For - filterwears enthusiasts ## Why This Product - Trusted filterwears brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Extended Filter Life:** Significantly reduces maintenance costs by extending service intervals and protecting your filter from dirt and debris. - • **Water-Repellent Shield:** Hydrophobic fabric ensures no water or moisture compromises your filter’s performance. - • **Built to Brave the Heat:** Engineered to withstand extreme temperatures up to 450°F without losing effectiveness. - • **Ultimate Debris Defense:** Keeps your high-performance filter pristine by blocking even the tiniest particles larger than 0.005 inches. - • **Effortless Installation & Durability:** Made from 100% monofilament polyester with secure base straps for a snug, easy fit that lasts. ## Overview FILTERWEARS F104L is a premium pre-filter cover designed to extend the life and efficiency of compatible air filters by blocking particles larger than 0.005 inches. Made from durable, hydrophobic monofilament polyester, it resists water and heat up to 450°F, reducing maintenance costs and enhancing engine protection. Easy to install with secure base straps, it’s the smart upgrade for professionals who demand reliability and longevity from their vehicle’s filtration system. ## Description Buy FILTERWEARS F104L For Napa 6637 Donaldson B085011 Baldwin PA2818 Fleetguard AH1141 Fram CA6818 Wix 46637; BLUE: Air Filters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Will save you money get it - I recently purchased the FILTERWEARS Pre-Filter F104K for my air filter and have been extremely satisfied with my purchase. The pre-filter is easy to install and fits securely over my air filter, providing an extra layer of protection. One of the things that I love most about the FILTERWEARS Pre-Filter is that it extends the life of my air filter. It captures larger debris and dirt particles before they can reach the main filter, which means that I don't have to replace my air filter as frequently. The pre-filter is also very durable and easy to clean. It is made of high-quality materials that can withstand harsh conditions and is resistant to water and UV light. Overall, I highly recommend the FILTERWEARS Pre-Filter F104K to anyone looking to extend the life of their air filter and protect their engine. It is a simple and effective way to improve the performance and longevity of your vehicle. Review: Excellent cover for and AFE filter - I have the AFE washable filter in my 99 F350 7.3 diesel. The cover I got from Riff raff diesel does not cover the front of the cover, but does help keep the main body of the filter cleaner. It was time to clean the filter and look for something that more fully covers the front of the filer. Works great, Snug fit, and helps keep the top of the filer clean as well as the main body. Will likely add another to the pack. I like high flow filters, but have always added some type of cover for added filtration as well as protection of the engine. Very nice. ## Features - Reduces overall maintenance cost, Extends filter service intervals, Adds convenience, Extends the life of any filter exposed or not - Keeps your high performance filter free of debris/dirt and water, Effective barrier for any particle bigger than .005 inches - No reduction of functionality in freezing temperatures, Hydrophobic fabric is standard (water repellent), Handles heat up to 450 degrees Fahrenheit - Made from 100% monofilament polyester, with straps at the base of pre-filter for easy installation ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01IU74D70 | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #97,000 in Automotive ( See Top 100 in Automotive ) #1,517 in Automotive Replacement Air Filters | | Brand Name | FILTERWEARS | | Customer Reviews | 4.7 4.7 out of 5 stars (672) | | Fit Type | Vehicle Specific Fit | | Manufacturer | FILTERWEARS | | Manufacturer Part Number | F104L | | Manufacturer Warranty Description | 60 days | | Model Number | F104L | | OEM Equivalent Part Number | B085011, PA2818, AH1141, CA6818, 6637, 46637 | | Product Grade | Replacement Part | | Shape | Round | | Unit Count | 1.0 Count | ## Product Details - **Brand:** FILTERWEARS - **Fit Type:** Vehicle Specific Fit - **OEM Part Number:** B085011, PA2818, AH1141, CA6818, 6637, 46637 - **Product Grade:** Replacement Part - **Shape:** Round ## Images ![FILTERWEARS F104L For Napa 6637 Donaldson B085011 Baldwin PA2818 Fleetguard AH1141 Fram CA6818 Wix 46637; BLUE - Image 1](https://m.media-amazon.com/images/I/71o7ele1WVL.jpg) ![FILTERWEARS F104L For Napa 6637 Donaldson B085011 Baldwin PA2818 Fleetguard AH1141 Fram CA6818 Wix 46637; BLUE - Image 2](https://m.media-amazon.com/images/I/71QlNF4XlUL.jpg) ![FILTERWEARS F104L For Napa 6637 Donaldson B085011 Baldwin PA2818 Fleetguard AH1141 Fram CA6818 Wix 46637; BLUE - Image 3](https://m.media-amazon.com/images/I/71sCI5st+3L.jpg) ![FILTERWEARS F104L For Napa 6637 Donaldson B085011 Baldwin PA2818 Fleetguard AH1141 Fram CA6818 Wix 46637; BLUE - Image 4](https://m.media-amazon.com/images/I/71hpdDh9puL.jpg) ![FILTERWEARS F104L For Napa 6637 Donaldson B085011 Baldwin PA2818 Fleetguard AH1141 Fram CA6818 Wix 46637; BLUE - Image 5](https://m.media-amazon.com/images/I/71jwRod0TsL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Why is a pre-filter beneficial to use?** A: FILTERWEARS pre-filters reduce maintenance, extend filter life, and keep debris, dirt, and water out. They block particles over .005", resist punctures, repel water, handle up to 450°F, and install easily. **Q: Is it possible to use aftermarket water repellent solutions?** A: No. The hydrophobic treatment cannot be replicated with sprays. Aftermarket solutions can clog micron openings, restricting airflow and reducing horsepower and fuel efficiency. **Q: What is the life expectancy of a pre-filter?** A: Replace every 6,000–12,000 miles. While still intact, water-repellent performance decreases over time. Lifespan depends on riding conditions and usage. **Q: Do pre-filters reduce airflow and horsepower?** A: No significant loss. The polyester mesh maintains airflow while protecting the filter, helping preserve horsepower and overall engine performance. **Q: Do pre-filters prevent water ingestion?** A: They help reduce water entry. The hydrophobic treatment repels water in rain, mud, and puddles, but they are water-resistant, not fully waterproof. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Will save you money get it *by T***. on January 8, 2023* I recently purchased the FILTERWEARS Pre-Filter F104K for my air filter and have been extremely satisfied with my purchase. The pre-filter is easy to install and fits securely over my air filter, providing an extra layer of protection. One of the things that I love most about the FILTERWEARS Pre-Filter is that it extends the life of my air filter. It captures larger debris and dirt particles before they can reach the main filter, which means that I don't have to replace my air filter as frequently. The pre-filter is also very durable and easy to clean. It is made of high-quality materials that can withstand harsh conditions and is resistant to water and UV light. Overall, I highly recommend the FILTERWEARS Pre-Filter F104K to anyone looking to extend the life of their air filter and protect their engine. It is a simple and effective way to improve the performance and longevity of your vehicle. ### ⭐⭐⭐⭐⭐ Excellent cover for and AFE filter *by J***Y on July 26, 2023* I have the AFE washable filter in my 99 F350 7.3 diesel. The cover I got from Riff raff diesel does not cover the front of the cover, but does help keep the main body of the filter cleaner. It was time to clean the filter and look for something that more fully covers the front of the filer. Works great, Snug fit, and helps keep the top of the filer clean as well as the main body. Will likely add another to the pack. I like high flow filters, but have always added some type of cover for added filtration as well as protection of the engine. Very nice. ### ⭐⭐⭐⭐⭐ Works great! *by S***. on May 7, 2025* Fit my 6637 knockoff filter very well. The red looks real good with black engine bay. Would buy again. --- ## 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.vu/products/41751460-filterwears-f104l-for-napa-6637-donaldson-b085011-baldwin-pa2818-fleetguard](https://www.desertcart.vu/products/41751460-filterwears-f104l-for-napa-6637-donaldson-b085011-baldwin-pa2818-fleetguard) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-09*