Refund policy

We want you to end up with the right part. If something isn't right, this policy explains exactly what we'll do, what it costs, and how long it takes. Please read it before requesting a return, most questions are answered below.

1. Return Window

Returns must be requested and shipped back within 30 days of the delivery date shown on the carrier's tracking record. The 30 days cover both the request and the return shipment; the window does not extend once an RMA is issued, so request as early as you can. Requests submitted after day 30, and returns postmarked after day 30, cannot be accepted.

Warranty claims are separate and are not limited to 30 days. See Sections 12 and 13.

2. How to Request a Return

Email support@onefastshop.com with:

• Your order number
• The SKU(s) you want to return
• The reason for the return

We'll review the request and reply with either a return authorization or an explanation of why the item isn't eligible.

3. Return Merchandise Authorization

Approved returns are issued an RMA number and an RMA form.

• Write the RMA number clearly on the shipping label or waybill and on the outside of the package, and enclose the printed RMA form inside. Packages that arrive without the RMA number on the outside are refused by the receiving warehouse.
• Ship only to the address shown on the RMA. Do not send returns to any other address, including the address the order shipped from.
• Each RMA is tied to specific SKUs. If your return covers multiple items with separate RMAs, confirm the correct form is matched to the correct item and that every form is enclosed.
• RMAs are valid until the end of your 30-day return window. Returns postmarked after day 30 from delivery will not be accepted.
• Insure the return shipment for the value of the item. Loss or damage on the return leg is claimed by you with your carrier.

Returns received without RMA paperwork, or containing items not listed on the RMA, cannot be processed. Unlisted items will be returned to you at your expense.

4. Condition Requirements

To be eligible for refund, items must be returned:

• Unused and uninstalled
• In the original, undamaged manufacturer packaging
• Complete, including all hardware, fasteners, fittings, adapters, gaskets, wiring, connectors, instructions, and literature that shipped with the item
• With proof of purchase (order number is sufficient)

Test-fitting a part usually leaves evidence. Parts showing installation marks, thread wear, scratching, cut zip ties, removed protective film, or fluid contact are considered used. The one exception is a confirmed fitment error on our part, covered in Section 6.

Incomplete returns: if hardware or components are missing, we will either deduct the replacement cost of the missing items from your refund or return the entire item to you, at our discretion.

Damage in transit on the return leg: pack returns securely. Items damaged in transit due to inadequate packaging may receive a reduced refund or no refund. We recommend the original box where possible. A $10 repackaging fee applies when the original manufacturer packaging is missing or unusable.

5. Category Specific Restrictions

Certain parts cannot be resold once handled and are therefore not returnable in the following conditions:

Category	Not returnable if
Fuel pumps, fittings, lines, injectors	Installed, or exposed to fuel of any kind. Drain and seal any authorized return in a plastic bag.
Wheel spacers, adapters, bolts, studs, lug nuts	Mounted to a hub or wheel, or torqued. Thread and seat marks disqualify the part.
Coilovers, electronics (tuners, ECUs, controllers, sensors), engine internals, turbochargers, superchargers, turbo kits	Final sale once shipped. Our warehouses cannot restock these categories, so they are not returnable unless defective or the error is ours (Section 11). Confirm fitment with us before ordering.
Exhaust components, turbochargers, downpipes	Heat-cycled, run, or showing exhaust discoloration.
Gaskets, seals, O-rings, adhesives, fluids, chemicals	Opened.
Springs, sway bars, control arms, other suspension	Mounted, cut, or with adjustment hardware moved from factory position.

If you're unsure whether something is still returnable, ask us before you touch it. These restrictions do not apply when the part was installed in good faith and the fitment error is ours (Section 6).

6. Fitment Responsibility

Fitment data, vehicle search tools, and application listings on our site are provided as a guide. Manufacturers revise applications, and vehicles vary by trim, market, production date, and prior modification.

You are responsible for confirming that a part fits your vehicle and your setup before installing it. That includes bolt pattern, center bore, thread pitch and seat type, offset and clearance, hardware length, and compatibility with modifications already on the car. If you are unsure, contact us before ordering and we will help you verify.

Product images may be representative. Some listings use a sample photo supplied by the manufacturer that shows a similar part rather than the exact item. The product title, part number, and specifications describe what ships. If an image and the specifications appear to disagree, the specifications control, and we encourage you to confirm with us before ordering.

A return caused by ordering the wrong part, misreading fitment, or a change in your build is a standard return under this policy. The restocking fee and return shipping apply.

A fitment problem becomes our error, handled under Section 11 at no cost to you, when:

• The fitment information we published was incorrect for the part as listed
• The manufacturer's published application is incorrect and the part cannot be installed on the listed vehicle in factory configuration
• We confirmed fitment for your vehicle in writing before you purchased (email or text from OneFastShop) and the part does not fit the vehicle as described to us
• Our vehicle selector showed the part as a fit for the year, make, model and engine you selected, and it does not fit that vehicle in factory configuration

Our fitment guarantee. Select your vehicle with the vehicle selector on our site, or send us your year, make, model, trim, and engine before you order and we will confirm in writing. If the selector shows a part as a fit, or we confirm it, we stand behind that. If we were wrong, the return is on us: no restocking fee, prepaid return label, full refund or replacement. The guarantee covers the vehicle as you described it to us; it does not cover modifications or prior damage you did not disclose. If you did not verify with us and the part is wrong, it is a standard return.

Already installed? A fitment error that is ours is accepted even after installation, at no cost to you. Because an installation problem can look like a fitment problem, we will ask for photos of the clearance or interference issue and walk through a short troubleshooting check with you (part orientation, hardware used, related components) before approving the return. Parts damaged during installation beyond what the fitment issue itself caused may be subject to a deduction.

7. Restocking Fee

A restocking fee of 8% applies to standard returns. It is calculated on the price of the returned items before tax and shipping (the order subtotal when the whole order is returned).

The restocking fee is waived when:

• The item is defective, damaged in transit, or dead on arrival
• We shipped the wrong item
• The fitment error is ours, including a fitment we confirmed in writing (Section 6)
• The item is being returned as part of an exchange (see Section 10)

8. Shipping Costs

Shipping is not refunded in either direction on a standard return. The original shipping charge is not refunded, and return shipping is your responsibility.

Use a trackable, insured service and keep the tracking number. We are not responsible for returns lost or damaged in transit. We do not provide prepaid labels for standard returns, buyer's-remorse returns, ordering errors, or fitment errors.

We pay return shipping and provide a prepaid label when:

• The item is defective or dead on arrival
• The item was damaged in transit to you
• We shipped the wrong item
• The fitment error is ours, including a fitment we confirmed in writing (Section 6)
• The error is otherwise ours

When we provide a prepaid label, use only that label. Apply it over any existing labels on the box.

9. Freight and LTL Returns

Oversized and heavy items ship by freight (LTL) rather than parcel. Freight returns are handled differently:

• Return freight is your responsibility on all standard returns, including fitment and ordering errors. Freight return costs are significant and frequently exceed the value of small components. Please confirm fitment before ordering an LTL item.
• The item must be returned on a pallet, banded or wrapped, in the original crating or packaging where possible.
• Do not tender an LTL return to a carrier without authorization. We will coordinate the pickup, appointment window, and any liftgate or residential service required. Charges for liftgate, residential pickup, redelivery, reconsignment, or missed appointments are deducted from your refund.
• Freight damage on the return leg caused by inadequate palletizing is not covered.

When the return is the result of our error or a defective item, we arrange and pay for return freight.

10. Exchanges

We do not process direct swaps. Instead, there are two paths, and the restocking fee is waived on both:

Option 1: Order the replacement now. Place a new order for the correct part so it ships immediately. Once we receive and inspect the original item, we refund it to your original payment method. This is the fastest route.

Option 2: Store credit. We issue store credit for the returned item's value once the return is received and inspected. You apply the credit toward the replacement part. Nothing out of pocket up front, but the replacement doesn't ship until the return is processed.

Return shipping on an exchange is still your responsibility, and the original outbound shipping charge is not refunded, unless the exchange is the result of our error. There is no restocking fee on either option.

If you're unsure which part is correct, send us your vehicle year, make, model, and relevant specifications and we'll confirm fitment before anything ships.

11. Defective, Damaged, or Incorrect Items

If an item arrives defective, dead on arrival, damaged in transit, or is not what you ordered, contact us within 7 days of delivery with your order number, a description of the issue, and photos where applicable.

We will resolve it at no additional cost to you through a replacement, an exchange, or a full refund. No restocking fee applies and we cover return shipping.

Concealed damage and freight: inspect freight and oversized deliveries before signing. Note any visible damage on the delivery receipt. Claims for freight damage reported after signing a clean receipt may be limited by the carrier's terms.

12. Limited Warranty: OneFastShop Assembled Products

Products assembled and sold under the OneFastShop name, including our LPFP upgrade kits, are covered for 1 year (12 months) from the date of delivery against defects in materials and workmanship.

Warranty claims are issued a warranty claim number rather than an RMA. We provide a prepaid return label and no restocking fee applies. Once the unit is received and inspected, we ship a replacement or issue a refund.

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

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, answer the failure detail questions we send with your claim number before shipping.

This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

13. 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.

After the 7-day defect reporting window in Section 11, warranty claims on vendor products are handled directly by the manufacturer. We will provide your proof of purchase, SKU, 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.

A vendor product that arrives defective or dead on arrival is handled by us under Section 11 when you report it within 7 days of delivery. Defects reported after that point follow the manufacturer's warranty process. The 7-day defect window is separate from the 30-day return window for unused items, which still applies.

14. Core Charges

Some remanufactured parts carry a core charge, listed separately at checkout and refunded when an acceptable core is returned.

• Cores must be returned within 30 days of delivery of the replacement part.
• The core must be the same part number as the unit purchased, complete, and rebuildable, meaning not cracked, seized, burned, disassembled, or missing major components.
• Return the core in the box the new part arrived in, drained of fluids and sealed against leakage.
• Core return shipping is your responsibility unless stated otherwise.
• Core refunds are processed separately from any merchandise refund and after the core has been inspected and accepted.

Cores that arrive damaged, incomplete, or after the 30-day deadline are not refunded and will not be returned to you.

15. Competition and Off-Road Use

Certain products we sell are intended for competition or off-road use only and are not legal for use on public roads in some or all jurisdictions. These products are identified on the product page.

By purchasing these items you represent that the vehicle is used in sanctioned competition or off-road use and that you are responsible for compliance with all federal, state, and local emissions, noise, and equipment laws in your jurisdiction.

Competition-use parts are not final sale. Unused, uninstalled competition parts in original packaging are returnable under the standard 30-day terms of this policy. Installed or used competition parts are not returnable, subject to the fitment-error exception in Section 6.

16. Special Orders and Non-Returnable Items

The following are final sale and cannot be returned:

• Special orders: catalog items that we do not normally stock and bring in specifically for you, at your request
• Coilovers, electronics, engine internals, turbochargers, superchargers, and turbo kits, which our warehouses cannot restock (defective or wrong-item cases are still covered under Section 11)
• Gift cards and store credit
• Hazardous materials and flammables, including compressed gases and pressurized cylinders
• Personal care items and perishables

Items in these categories are identified as final sale on the product page or at the time of order confirmation. We do not offer custom or made-to-order fabrication. Special orders may be cancelled under the terms in Section 17.

OneFastShop-branded kits held in stock are not special orders. They are returnable under this policy and warranty-backed under Section 12. Items that ship from any of our other warehouse locations are likewise not special orders and remain returnable under the standard terms.

17. Order Cancellations

We process and ship orders quickly, so cancellation is never guaranteed. Once an order has been packed or shipped, it can no longer be cancelled.

How to request a cancellation. Email support@onefastshop.com with your order number as soon as possible. We will submit the request to our warehouse right away and confirm by email whether it went through. Until you receive that confirmation, the order is still in process.

If we are able to cancel before shipment. You will receive a full refund to your original payment method. Regular in-stock orders carry no cancellation fee.

Backordered and special order items. If an item is backordered or special order, we will contact you with an estimated availability date and ask you to confirm, choose an alternative part, or cancel. Once you have confirmed, cancelling after that point is subject to a 6% cancellation fee, as stock has already been committed for you. The message asking you to confirm will restate this fee so there are no surprises.

If the order has already shipped. No worries, you can still return it. Shipped orders fall under the standard return terms of this policy: request an RMA within 30 days of delivery, return shipping is your responsibility, the 8% restocking fee applies, and the original shipping charge is not refundable. Refusing delivery of a shipment is treated the same as a standard return, with the restocking fee, outbound shipping, and any carrier return charges deducted from the refund.

Fee breakdown at a glance

Situation	Fee	Return shipping	Original shipping refunded?
Cancelled before shipment, in-stock item	None	n/a	Yes, full refund
Cancelled backorder or special order after you confirmed it	6% cancellation fee	n/a	Yes
Standard return: changed your mind or ordered the wrong part	8% restocking fee	Customer pays	No
Exchange: you placed a replacement order with us	Waived	Customer pays	No
Defective, damaged in transit, or wrong item shipped	None	We pay, prepaid label	Yes
Shipped, then refused at delivery	8% restocking fee, plus any carrier return charges	Deducted from refund	No

Fees are calculated on the pre-tax merchandise price. Sales tax is always refunded in full. Refunds are issued to the original payment method within 10 business days of inspection (see Section 21).

18. Lost, Stolen, and Undelivered Packages

If tracking shows delivered and you do not have the package, we recommend you:

1. Check with household members, neighbors, and building management
2. Look for a carrier notice or an alternate delivery location
3. File a claim with the carrier
4. File a police report if you believe the package was stolen

We will provide tracking records and proof of shipment to support your claim.

If tracking does not show delivery and the package appears lost in transit, contact us within 15 days of the last tracking update. We will open a carrier trace and, once the carrier confirms the loss, ship a replacement or issue a full refund.

Address accuracy is your responsibility. Orders shipped to an incorrect or incomplete address provided at checkout are not eligible for refund. Packages returned to us as undeliverable are treated as standard returns and reshipment is charged at cost.

19. International and EU Orders

International customers are responsible for all duties, taxes, and customs fees. These are not refundable and are not reimbursed by OneFastShop on a return.

EU and UK consumers have a statutory right to withdraw from a distance purchase within 14 days of delivery, without giving a reason. Under this right:

• No restocking fee applies
• We refund the item price and the cost of standard outbound delivery within 14 days of receiving the goods back
• You are responsible for the direct cost of returning the goods
• We may reduce the refund to reflect any diminished value from handling beyond what is necessary to establish the nature and characteristics of the goods

Outside the 14-day withdrawal period, the standard terms of this policy apply.

20. Low Value Returns

For low-value returns, the cost of shipping and processing can exceed the value of the item. At our discretion, we may issue a refund without requiring the item to be returned. If we do, we will tell you in writing, and you do not need to ship anything back.

21. Refund Processing

Refunds are issued to the original payment method within 10 business days of inspection. Your bank or card issuer may take additional time to post the credit.

We inspect returns within 3 business days of receipt and will email you to confirm the outcome and the final refund amount.

Refund amounts shown at the time of authorization are estimates, and are subject to inspection. If inspection changes the amount, we will tell you why before processing.

Sales tax. Sales tax collected on a returned item is refunded in full. The restocking fee is calculated on the pre-tax merchandise price and is a separately stated service charge.

Discounts and promotions. Refunds are based on the amount you actually paid for the item after any discount, not the list price. Order-level discounts are allocated proportionally across the items in the order. If returning an item drops your order below the threshold that earned a promotional benefit, such as free shipping, a volume discount, or a bundled item, the value of that benefit is deducted from your refund.

If the original payment method is unavailable, such as a closed account, an expired card, or a payment method the processor can no longer credit, we will issue the refund as store credit.

If more than 15 business days have passed since we confirmed your refund and you have not seen the credit, contact us at support@onefastshop.com and we'll trace it.

22. Chargebacks and Return Abuse

If you have a problem with an order, contact us first. We resolve nearly everything directly and faster than a bank dispute can.

Filing a chargeback instead of following this policy is not a substitute for a return. If a chargeback is filed on an order:

• Any pending return authorization for that order is void, and we will not accept the merchandise
• We will contest the dispute with order records, tracking, delivery confirmation, and correspondence
• If the dispute is decided in your favor while you retain the merchandise, we may pursue recovery of the merchandise or its value
• We may decline future orders from the account, billing name, and shipping address involved

Return abuse. We reserve the right to refuse a return, refuse service, cancel orders, or limit or close an account where we identify a pattern of:

• Excessive returns relative to orders placed
• Returning used, installed, or substituted items
• Repeated claims of non-delivery on orders confirmed delivered
• Returning items obtained from another seller
• Ordering with the apparent intent to use and return

Where fraud is identified, refunds are withheld and the matter may be referred to law enforcement and the payment processor.

23. Limitation of Liability

Please read this section carefully.

Automotive performance parts are sold for installation on vehicles by qualified persons. Installation should be performed by a competent professional technician, and the completed installation should be inspected before the vehicle is driven or operated at speed.

To the maximum extent permitted by law:

• Our total liability for any claim arising out of a product or order is limited to the purchase price paid for that product.
• We are not liable for incidental, indirect, special, punitive, or consequential damages of any kind. This includes, without limitation: labor and installation costs, removal and reinstallation costs, diagnostic time, dyno or tuning time, towing, storage, rental vehicles, lost wages, lost time, loss of use, missed events, shipping costs, damage to the vehicle or to other components, engine or drivetrain damage, property damage, and personal injury.
• We do not reimburse labor charges under any circumstances, including on warranty claims and defective or dead-on-arrival products. Manufacturers do not reimburse labor to us, and we do not reimburse it to you.
• We make no warranty regarding the performance figures, horsepower gains, or results a product will produce on any particular vehicle or combination of modifications.
• On OneFastShop assembled products, any implied warranties, including merchantability and fitness for a particular purpose, are limited to the 1 year duration of the written limited warranty in Section 12. Vendor products are sold with the manufacturer's warranty only, and we disclaim all implied warranties on them to the extent permitted by law.

Some states and jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, or limitations on how long an implied warranty lasts, so some of the above may not apply to you. This section does not limit any right you have that cannot be waived under applicable law.

24. Contact

Reference your order number, and your RMA or warranty claim number if one has been issued.

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

This policy is subject to change. Changes apply to orders placed after the posted revision date. Current revision: October 9, 2026.