Walbro BKS1001 550 LPH Brushless In-Tank Fuel Pump & Controller Kit, controller box, wiring and canister laid out

Walbro BKS1001-4 550 LPH E85 Brushless In-Tank Fuel Pump and Controller Kit - 39mm

Walbro SKU: WALBKS1001-4
Price
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Details

BrandWalbro
SKUWALBKS1001-4
Manufacturer Part NumberBKS1001-4

Product Information

This kit pairs a brushless in-tank screw pump with its matched controller, which powers the pump and can vary its speed to match what the engine needs. The brushless design means lower current draw, less heat and less noise, and the pump flows over 550 liters per hour at 40 psi and 13.5 volts. The controller has sealed electronics for weather resistance and 3 ft power, ground and pump leads, so it can be mounted in almost any spot.

Specifications

Type In-tank brushless fuel pump and controller kit
Flow Rate 550+ lph @ 13.5V / 40 psi
Fuel Compatibility Gasoline and E85 (flex fuel)
Pressure 112 psi maximum
Fitment Notes 39 mm pump body, in-tank installation
What's in the Box
  • E5LM brushless screw pump
  • Brushless controller
  • 3 ft wiring pigtail for in-tank mounting
  • Pump mounting inlet grommet and outer sleeve
  • 31 micron inlet filter
  • Printed instructions

Documents: Drawing (PDF) | PWM Command vs Duty Cycle (PDF) | Performance Sheet (PDF)

How is the pump speed controlled?

  • The controller has three modes: 100% duty cycle with simple power and ground wiring, 50% duty cycle when the command wire is grounded, and full PWM control when the input is wired to a 100 Hz battery-level PWM signal.

How much power does it support?

  • It supports up to 1,000+ horsepower and suits both naturally aspirated and boosted engines.

Can it go on an existing pump hanger?

  • Yes. The inlet grommet and outer sleeve are made for fitting the brushless pump to an existing hanger bracket, and they also help reduce noise.

What kind of outlet does the pump have?

  • A triple barb outlet.

Shipping

  • In stock orders typically ship within 1 to 3 business days.
  • Standard, expedited, and overnight options at checkout.
  • Oversized items ship by freight and take longer.
  • Special order items follow a lead time we confirm with you individually before the order is committed.
  • Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
  • Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
  • International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

  • 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
  • Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
  • Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
  • Product images may be representative. The SKU and specifications in the listing are what ships.
  • Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Returns & Refunds · Warranty
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