Xenocron is happy to now offer the NEW Walbro 400lph in-tank fuel pump. This new offering from one of the most trusted names in aftermarket fuel pumps represents a leap forward in the capabilities of a single in-tank pump.
Walbro has released a high-performance aftermarket version of its dual-channel, single-stage (DCSS) 39/50 fuel pump for engines with more than 500 HP. The innovative design of the DCSS 39/50 features a single impeller with two parallel rows of turbine blades. The blades feed two high-pressure pumping channels, as opposed to a conventional single-stage pump that uses an impeller with a single row of blades at its outer edge. This innovative design results in improved hot fuel flow, as well as minimal noise and current use, resulting in efficiency thatís 20% higher than conventional pumps.
Installation may require more work on some applications due to the larger base size when compared to a typical 255 pump. A universal install kit is available as an add-on, professional installation is recommended.
Walbro Fuel Pump Warranty Info
Walbro offers a one year warranty against manufacturing defects on their in-tank and external high performance fuel pumps [i.e. GSS and GSL pumps] and 90 days on their bellows pumps and Series 6000 pumps. Previously, they were very forgiving with their policy. They simply told vendors to return the pumps and give the customer a new pump. Pretty much a "no questions asked" warranty.
In March, 2004, we were told by Walbro that they were no longer going to blindly replace fuel pumps that were declared defective by customers. This decision was made due to an extremely high volume of pumps tested (nearly 98 percent) that proved to be non-defective. Since then, pumps were required to be sent to Walbro for testing. Even though the number of returned pumps dropped dramatically, a vast majority of returned pumps were still found to be not defective. That testing was taking a significant amount of time/effort.
Walbro says that most high-pressure pump failures can be blamed on one or more of the following:
- Operating the pump without a pickup filter
- Operating the pump in a dirty tank/fuel system
- Operating the pump without fuel [i.e. dry]
- Operating the pump in a returnless fuel system where the vehicle controls fuel pressure by modulating the voltage to the pump [e.g. '99 up Mustang].
Starting August 1, 2005, Walbro has implemented a $40.00 charge per pump for testing. If you have a fuel pump you believe has failed due to manufacturing defects, return it to Xenocron along with a money order for $40. Xenocron will return that pump for testing directly to Walbro. If Walbro determines the pump failed under warranty, we will send you a new pump and your $40. If you can't wait for the test results [usually 3-6 months (yeah I know, crazy)], we will sell you a replacement pump, then refund your purchase price if the pump failed due to manufacturing defects. If Walbro determines the pump failed due to installation problems or contamination, then they keep your $40 (charge for testing the pump and cutting it in half) and no refund on the new pump will be given unfortunately.