As engine technology continues to advance and horsepower production continues to increase, the need for an in-tank pump that can supply a higher volume of fuel more efficiently has arisen. To meet this need Walbro has introduced the 39/50 Dual-Channel Single-Stage fuel pump. The pump was designed around the 39mm armature that has been proven in OEM applications for years. In testing, this pump has been shown to flow 400 lph at 40 psi when supplied with 13.5 volts. This is enough flow capacity to support 750hp on gas. Not recommended for applications making less than 500 hp.
For more information, click Product Details below.
Hot-fuel test results have also shown the Walbro 39/50 to retain its superior flow capabilities when compared to other single-stage fuel pumps, losing only 5% of its capacity versus losses of 18% - 32% in the others (at fuel temps of 150 degrees F). This is an important consideration for any high horsepower street car, as any large decrease in flow can result in a lean condition and subsequent engine damage if compensations are not made.
Due to the specifications of this fuel pump, please take note of the following:
The larger diameter at the base of the fuel pump will prevent this from being an OEM drop-in replacement on most applications. Modifications to the mounting bracket, wiring, and connector may be required for proper fitment. We recommend 14 AWG wiring to account for the current draw this pump has.