AEM 340LPH In Tank Fuel Pump Kit - Ethanol Compatible -50-1200

The 50-1200 is AEM's answer to the Walbro 255 upgrade, and the reason it wins that comparison is what's in the box. Tested compatible with ethanol up to E100, methanol up to M100, and all types of gasoline. Each pump is tested to flow 340 lph at 40 psi. 39mm diameter fits most applications, and it ships with pre-filter, hose, clamps, flying lead, end cap, and rubber buffer sleeve.

That install kit is the differentiator — the Walbro 450s ship bare, so by the time you've bought a sock and a pigtail you're not saving what you thought. This drops in with what's in the box.

Offset inlet design, 11mm inlet, 8mm slip-on outlet, rated to 80 psi.

Good for roughly 600–650 hp on gasoline, and closer to 400–450 on E85 given the 30% more fuel ethanol demands. That makes it right for a built K-series, a mid-power turbo four, or a flex-fuel street car — and the wrong pump if you're chasing 800+, where you want a 274 or 295 instead.

Kit includes fuel pump, rubber sleeve and end caps, pre-filter, and flying lead.