QFS 340LPH In-Tank Fuel Pump Assembly, QFS-A81HV QFS

QFS 340LPH In-Tank Fuel Pump Assembly, QFS-A81HV

  • $296.98

*** IMPORTANT NOTE: Order processing can take up to 3 business days. Shipping timeframes start after the order processing has been completed. ***

The QFS-A81HV 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


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

Product Disclaimer:

Emissions Equipment Tampering Warning: In many states, tampering with your vehicle’s emissions equipment is unlawful. Our products are designed and sold for sanctioned off-road/competition non-emissions controlled vehicles only and may never be used on a public road or highway.

Using our products for street/road use on public roads or highways is prohibited by law unless a specific regulatory exemption exists (more information can be found on the SEMA Action Network website www.semasan.com/emissions for state-by-state details in the USA).

CARB-Restricted Areas: CARB-Restricted products, will not be shipped to state of California under any circumstatences.

Official Air Resource Board Link: ARB State Adoption Link

Customer Responsibility: It is the responsibility of the installer and/or user of this product to ensure compliance with all applicable local and federal laws and regulations. Please check with your local vehicle authority before purchasing, using, or installing any of our products.

By proceeding with the purchase and use of our products, customers affirm their commitment to adhere to the terms outlined in this comprehensive product disclaimer. We reserve the right to update this disclaimer as necessary.

We Also Recommend

😍 Handpicked Recommendations

Bundle Offers from Addly