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.
Shipping & Delivery Information
Our Shipping Promise
At Slickpurchase, we understand how important your purchases are. That's why we take extra care with every package we send. All orders are shipped in double-boxes with full insurance for additional protection, ensuring your items arrive safely.
Processing & Shipping Timeline
- Processing Time: Orders are processed within 3-6 business days
- Domestic Delivery: Typically 6-10 business days
Please note that delivery times are estimates and may vary based on your location, weather conditions, or other unforeseen circumstances.
Shipping Destinations
Slickpurchase currently only ships to the United States.
Shipping Costs
We are pleased to offer free standard shipping on all orders within the United States.
Discreet Packaging
We respect your privacy. All Slickpurchase packages are shipped with complete discreet packaging. The product name, description, sender's name, and any information that hints about the contents are encrypted. Your package will arrive without any indication of what's inside, ensuring your purchase remains confidential.
Signature Requirements
Important Note: All orders valued above $250 will require a signature upon delivery for your protection.
Order Tracking
Once your order ships, you'll receive a tracking number via email so you can monitor your shipment's progress every step of the way.
Lost or Delayed Shipments
If your package is lost or significantly delayed, please contact our support team immediately, and we will assist you in resolving the issue.
Additional Security Measures
For your protection, we may contact you for additional order verification of the payment method on certain orders.
Questions or Concerns?
For details on returns and refunds, please refer to our Return Policy page.
For any questions about shipping or delivery, please contact our customer service team at support@slickpurchase.com.




















