Fuelab 818 Series In-Line Fuel Filter - 3" Element - 6 Micron/Fiberglass (81830)

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818 Series In-Line Fuel Filter with 3" 6 Micron Fiberglass Element by Fuelab

FUELAB® In-Line Fuel Filters keep your engine running clean. They feature male AN / 37º Flared fitting end caps, so you can attach them directly to other fuel system components. Also featured are machined internal radii for minimal pressure drop. The compact 818 Series Fuel Filter includes a 3 inch element. With AN female ports. O-ring required. Consult component manufacturer’s port specifications.

Choice of -6AN, -8AN, -10AN or -12AN inlet/outlet Fuelab filter with short (3 inch) 6 micron / Micro-Fiberglass Element - Our most advanced filter element provides extra particle protection and reduces maintenance requirements with improvements in filter.


  • 3" 6 micron fiberglass element
  • Compact design supports 200 GPH
  • Gasoline, diesel, methanol, and ethanol fuel compatible
  • Billet Aluminum with anodize per military MIL-A-8625, Type II
  • -6AN, -8AN, -10AN or -12AN male inlets and outlets
  • Includes low profile saddle clamp mounting bracket(s)
  • Replaceable or cleanable filter element
  • 200 PSIG maximum pressure rating
  • Backed by a 2-year limited warranty


  • Universal

What's In The Box?

  • 1 - 818 Series In-Line Fuel Filter
  • 1 - 6 Micron Fiberglass Element
  • Necessary Mounting Hardware
  • Instructions/Manuals (if applicable)
  • Warranty Information




Fuelab 2-Year Limited Warranty

Customer Reviews

Based on 6 reviews
Barry S.
High quality filter

I installed this filter along with a high flow fuel pump, bigger injectors, fuel rails, AN fuel lines, and fuel pressure regulator. It is very well built, it flows well, and it filters down to 6 microns as recommended by my injector manufacturer! It’s cheap protection for my investment.

Nice filter

I was looking for a filter that has options as far as filter media. This is the one and went with the micro-glass element for e85. Fits perfectly with the Evo X Map inline filter kit (to replace the Russell 40 micron filter).

Dominic Salustri
Top Notch

Very nice, professional looking high quality filter. I show not even 1 psi fuel pressure lose after installing it. I got 6m fiberglass element. A MUST for E85 if you want your injectors to have a decent lifespan. Replacement elements are cheap, so I'm very happy with the investment

Fuel lab fuel filter

Excellent product easy to Install good for E85


Easy to install everything is included Good product to run E85 on nice quality