QFS 340LPH In-Tank Fuel Pump Assembly, QFS-A80HV

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3.00 LBS

The QFS-A80HV is a direct drop-in 340LPH high volume fuel pump assembly for 1999-2003 Chevrolet Silverado 1500 and GMC Sierra 1500 pickups. Perfect for forced induction applications requiring significantly more volume beyond what the stock fuel pump can provide. Quantum's 340LPH direct drop-in fuel pump assemblies eliminate the problematic venturi canister design found in all 1995-2005 GM trucks, vans, and SUV's. Previously, installing a high volume 255LPH or 340LPH fuel pump into an OEM GM canister meant cutting "windows" into the sides of the bucket, thereby completely disabling the venturi function and the ability of the canister to stay full during cornering or acceleration, which inevitably leads to overheating of the fuel pump. The bandaid solution was to keep the tank at 1/4-1/2 full or above at all times. Quantum's 340LPH assembly resolves the inadequacies of the OEM canister design, allowing the tank to be run down to empty just like stock.

Features & Benefits

  • Clean sheet canister design eliminates unreliable venturi setup, and allows tank to be run to empty
  • High Volume QFS 340LPH turbine fuel pump preinstalled, 100% gasoline and/or E85 compatiblle
  • Ethanol safe PTFE/ teflon corrugated flex hose and teflon coated wiring throughout
  • Updated 40 amp bulkhead connector to handle additional amperage load of high volume pump
  • New float arm, sending unit, tank seal, and 4-way wiring connector included
  • Lifetime Warranty

    This part fits a variety of different applications including Chevrolet, GMC. Please use the year make model dropdown to confirm your specific vehicle's fitment.


    This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to

  • Flow:
    340 LPH
    All Quantum brand products are backed by a lifetime warranty. Quantum products that fail at any time will be replaced under warranty if it is determined that the failure was due to a defect in workmanship or material. This warranty only applies to the original customer and is non-transferable. Improper use or installation of the product voids this warranty, and Quantum is not responsible for incidental costs resulting from failure of the product. In the unlikely event that you should need to request a warranty, please contact us at with your order information and a detailed description of the problem.


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