Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Air and Fuel› Fuel Pumps, Regulators and Components
Aeromotive
Aeromotive Replacement 40 Micron Fabric Element (for 12303 Filter Assembly)
SKU: A006 12603
Beginner — under 30 min
Overview
Show original supplier description
Part #: 12603
Commonly the most overlooked component in a fuel system, filter neglect can be the most costly. If not cleaned or replaced regularly, filter elements can become clogged, resulting in reduced fuel flow, engine performance, and, ultimately, fuel pump or engine damage. By simply replacing and/or cleaning your filter elements regularly, you can avoid costly repairs to your fuel system and ensure peak engine performance. Aeromotive recommends annual inspection and service of filter elements. This includes replacing 10-micron fabric elements and cleaning or replacing 100-micron stainless steel elements. Severe duty applications or newly installed systems may require more frequent maintenance. How do you know what element you need for your filter Several Aeromotive filters share the same housing, but the elements inside may be drastically different and putting the wrong filter or element in the wrong place could be costly for your fuel pump or engine. To find out, look inside the inlet of the filter. Stamped on the top of the element is the micron rating. This will tell you what element you need for your filter.
Replacement Element, 40-m Fabric, for 12303/12353 Filter Assembly and all 1-1/4" OD Filter Housings.
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Vehicle Symptoms
- Engine stumbles under heavy acceleration
- Difficulty starting after sitting for a while
- Loss of power at high RPMs
- Engine surges or hesitates during cruise
- Fuel smell or visible debris in fuel
Diagnostic Codes
- P0171 – Fuel Trim Malfunction (Bank 1)
- P0174 – Fuel Trim Malfunction (Bank 2)
- P0300 – Random/Multiple Cylinder Misfire Detected
- P0191 – Fuel Rail Pressure Sensor Circuit Range/Performance
Relevant Conversations
- car hesitates when accelerating
- P0171 code after fuel filter change
- Aeromotive 12603 vs 12605 fuel filter
- how to replace fuel filter element on a 2000 Ford Mustang
- best fuel filter for 600 hp fuel system
- 40 micron fuel filter vs 10 micron
- symptoms of clogged fuel filter in high performance car
- fuel filter element replacement cost
- Aeromotive fuel filter element 12603 install
- buy fuel filter element for Aeromotive regulator
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Aeromotive |
| Part Number | A006 12603 |
About MOTORMIA
Buy with Confidence
Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return PolicyShipping
Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
View Full Shipping Policy