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🔧 Keep your classic engine clean and running smooth—filter smarter, not harder!
The K&N 81-0300 Replacement Fuel Filter features a clear glass housing for easy visual inspection, a replaceable inner mesh element for cost-effective maintenance, and a simple, tool-free installation process. Designed specifically for carbureted and non-fuel injected engines, this in-line filter is a reliable, budget-friendly upgrade trusted by thousands of users, backed by a 1-year limited warranty.





| ASIN | B07X64ZN5H |
| Best Sellers Rank | #4,245 in Automotive ( See Top 100 in Automotive ) #13 in Automotive Replacement Fuel Filters |
| Brand Name | K&N |
| Compatible with Vehicle Type | Truck |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,837) |
| Global Trade Identification Number | 00024844343680 |
| Included Components | Fuel Filter |
| Item Diameter | 29 Millimeters |
| Item Type Name | Replacement Fuel Filter |
| Manufacturer | K&N Engineering |
| Manufacturer Part Number | 81-0300 |
| Manufacturer Warranty Description | 1 Year Limited |
| Outer Material | Glass |
| Product Grade | Replacement Part |
| Style Name | In-Line |
| UPC | 024844343680 |
| Unit Count | 1.0 Count |
C**R
Nice Filter!
This little filter packs a punch for its size. The clear glass housing is a standout feature—it lets you easily spot debris buildup without taking anything apart. I installed it on a classic carbureted setup using 5/16" fuel line, and it fit perfectly. The replaceable mesh element is a smart touch, saving time and money down the line. Installation was a breeze—no special tools needed—and it’s held up well under regular use. It’s not designed for fuel-injected systems, but for older vehicles or small engines, it’s a reliable, budget-friendly solution. At under $10, it’s hard to beat for peace of mind and easy maintenance.
P**L
Works great
Great filter and see through so you can watch the gas flow
J**.
Nice quality!
Looks like good quality, need to get it installed. good price compared to others
C**N
Good glass fuel filter
This fuel filter has great flow, easy to install but I will say after a few weeks of my truck sitting the fuel filter was leaking and it wasn’t the hoses it was the actual filter but I just had to mess around with it then it was all better. For the filter being glass and tiny it is very durable.
C**S
Great Gas filter
Great product
1**L
K and n the best
Works on Honda Shadow spirit 750 very happy with this item
C**O
Great
Great
G**K
POS, Don’t Buy
I don’t write reviews but this was so bad I had to. Seals deteriorated and turned into crumbly pieces in less than 30 minutes. I only noticed since I was doing repairs and had just taken it for a test run, came back and noticed little pieces in the filter while inspecting everything else. Took it apart and seals were disintegrating. Maybe this isn’t rated for regular to premium gas and needs ethanol free but the package says nothing about that. BUY SOMETHING ELSE!
B**.
Perfect and fast delivery
J**S
Excellent quality and service.
K**A
شكرا
R**.
Very good product
A**I
The filters are very good in size and quality. It is good for in line filers after the feul tank and it is better to put a smaller filters forvthe feul injection
Trustpilot
2 days ago
2 weeks ago