• Home »
  • FAQ
  • Quantum Fuel Systems > Policies

Quantum Fuel Systems > Policies

  1. Shipping
  2. Privacy Policy
  3. Return Policy
  4. Warranty Policy
  5. CA Sales Tax

Q: Shipping

Quantum's standard FREE shipping method for Domestic shipments is USPS Priority Mail*. Fuel pump installation kits, accessories, fuel injector adapters, and other small items are shipped FREE via USPS First Class with tracking. You may upgrade to UPS should you need it sooner.

International fuel pump and fuel system accessory orders are shipped via USPS Priority Mail International** unless otherwise requested. Delivery time is 10-12 business days, but may take longer for developing countries. Please contact us with your country and postal code if you have questions about delivery time.

INTERNATIONAL CUSTOMERS: Please contact us with your country and postal code for our DHL Express rates. Transit times are 2-5 business days. DHL Express is fast, efficient, and reliable and we offer low rates to Canada, Mexico, Europe, and parts of South East Asia. We ship DHL Express to anywhere in the world.

All shipments that are in stock and ordered before 5PM PST will ship the same day. Orders shipped via DHL need to be placed by 2pm PST.

*USPS Priority Mail 2-3 Day is not guaranteed and may take longer due to weather conditions and other delays.
**USPS Priority Mail International does not include tracking after the package leaves the United States. Transit times are 10-12 for developed countries (with a few exceptions), and 4-8 weeks for developing countries.

Please email us at sales@highflowfuel.com if you have any questions or concerns regarding your shipping method. If you need to change your shipping method, please call us at 818-574-3835 ASAP as orders ship out same day and emails have a 24 hour response time.

Q: Privacy Policy

Quantum Fuel Systems does not sell, trade, rent, or otherwise profit from any of its customers' information, which includes names, phone numbers, addresses, e-mail addresses, or any personal information. If you choose to sign up for our newsletter, you may occasionally get updates from us on new products, or about blog articles we write detailing installations, or our own shop vehicles and what we are doing with them, to showcase our involvement in the automotive and powersports industries.

Q: Return Policy

Returns eligible for a refund are accepted up to 60 days after the purchase date. Unused items can be exchanged at any point afterwards, or be may used towards another purchase.  BBK parts are subject to a $25 restocking fee.

To start a return, please request a return merchandise authorization number (RMA #) by emailing us at sales@highflowfuel.com or calling us at 1-818-574-3835.


Via email, please include:
- the original order number OR order name OR email address the order was placed under
- the reason for the return
- year/make/model information

Returns received by QFS without an RMA # will be refused.

If your return is approved, we will email you with an RMA # and return instructions.

Returns are generally processed within 2 business days. Please allow up to 10 business days for refund credits to be processed.

Under no circumstances will Quantum be responsible for repair costs, towing costs, or storage costs related to a failed part

Q: Warranty Policy

HFP brand fuel pumps, Quantum brand fuel pumps, Quantum fuel pump accessories, and Quantum fuel injectors have a Lifetime Warranty on the parts themselves. If the part should fail at any time, Quantum will replace it under the Lifetime Warranty.  Under no circumstances will Quantum be responsible for repair costs, towing costs, or storage costs related to a failed part.  In order to request a warranty replacement, customers must contact us via email at sales@HighFlowFuel.com and provide us with order information.

Q: CA Sales Tax

A tax rate of 7.75% will be added to all orders shipped to a California address. Wholesale buyers may contact us to submit a resale card by faxing it to 1-805-832-6040.