Warranty

Two kinds of warranty apply to what we sell. Products we assemble under the OneFastShop name are covered by us. Everything else carries the manufacturer's own warranty. Here is how each works and how to make a claim.

OneFastShop Assembled Products

Products assembled and sold under the OneFastShop name, including our LPFP upgrade kits, are covered for 12 months from the date of delivery against defects in materials and workmanship.

Tuning does not void this warranty. These products are sold for modified applications. Coverage is voided only by the conditions listed below.

Not covered:

  • Failures caused by incorrect installation or wiring
  • Damage from contamination, debris, water, or improper or contaminated fuel
  • Operation outside the product's rated pressure, flow, or voltage range
  • Failures caused by supporting components outside the kit, including a failing EKP, relay, fuel pump control module, or inadequate wiring
  • Physical damage, impact, or crushing
  • Modification of the unit
  • Normal wear

How to make a claim

  1. Email support@onefastshop.com with your order number, a description of the failure, and any datalogs or photos that show the issue.
  2. We will issue a warranty claim number and a prepaid return label. No restocking fee applies.
  3. Once the unit is received and inspected, we ship a replacement or issue a refund.

Units confirmed on inspection to have failed for an uncovered reason will be returned to you, and you will be responsible for return shipping. To speed up diagnosis, complete the failure detail questions on the claim form before shipping.

Manufacturer Warranties on Vendor Products

Most products we sell are manufactured by third parties. These carry the manufacturer's warranty, not ours. Warranty terms, coverage periods, exclusions, and remedies are set by the manufacturer and vary by brand.

Within the first 30 days of delivery, a defective or dead on arrival vendor product is handled by us at no cost to you. Contact us within 7 days of delivery with your order number, a description of the issue, and photos where applicable. We cover return shipping and there is no restocking fee.

After 30 days, warranty claims on vendor products are handled directly by the manufacturer. We will provide your proof of purchase, part number, and the manufacturer's warranty contact information, and we will help you open the claim where we can. We cannot control the manufacturer's decision, required documentation, inspection process, or turnaround time, and we do not issue refunds or replacements on the manufacturer's behalf.

Many manufacturers require the claim to come from the original purchaser, require photos or the failed part returned for inspection, and will not honor claims on parts used in racing or competition. Register your product with the manufacturer where registration is offered.

What No Warranty Covers

Neither our warranty nor a manufacturer's warranty reimburses labor, installation, removal, diagnostic time, dyno or tuning time, towing, rental vehicles, or damage to other components. Manufacturers do not reimburse labor to us, and we do not reimburse it to you. See Section 23 of our Refund Policy for the full terms.

Questions

Email: support@onefastshop.com
Phone: (929) 352-6561

These terms are part of our Refund Policy, Sections 12 and 13. Current revision: October 5, 2026.