Shipping Policy
Last updated: June 2026
Shipping
Our regularly scheduled shipping days are Tuesday and Wednesday. Orders placed after our scheduled shipment for the week will typically ship on the following Tuesday.
Delivery times listed below are estimates provided by USPS and begin after the package has been accepted by the carrier. Processing time before shipment is separate from carrier transit time.
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USPS Ground Advantage: Typically 2-5 business days after acceptance by USPS.
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USPS Priority Mail: Typically 2-3 business days after acceptance by USPS.
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USPS Priority Mail Express: Typically 1-3 calendar days, depending on the origin, destination, and USPS acceptance date. Priority Mail Express includes a USPS money-back guarantee for eligible shipments, subject to USPS terms and exceptions.
Tracking information is provided when a shipping label is created. Please note that tracking may initially show "Pre-Shipment," "Label Created," or "USPS Awaiting Item" until the package has been accepted and scanned by USPS.
If you need your order by a specific date, please contact us before ordering so we can help determine whether the expected processing and shipping timeline will work for you.
Returns & Exchanges Policy
Last updated: September 2026
60-Day Return Policy
CS Performance Fuel Injection accepts eligible returns requested within 60 calendar days of the original purchase date.
We understand that circumstances change, fitment questions arise, and sometimes a customer may need to return a product even after installation. For that reason, both unused and installed products may be eligible for return within the 60-day return period, subject to the conditions below.
Unused and Uninstalled Products
Unused and uninstalled products returned complete, unaltered, undamaged, and in resalable condition are eligible for a full merchandise refund with no restocking fee.
Opening the package alone does not disqualify an item from return, provided the injectors have not been installed, used, contaminated, damaged, or modified and all originally supplied components are included.
Original shipping charges are not refundable unless the return is the result of an error by CS Performance.
Installed or Used Products
CS Performance also accepts returns of installed or used fuel injectors when the return is requested within the 60-day return period.
Because installed injectors require additional inspection, testing, cleaning, and preparation before they can potentially be offered for sale again, all installed or used products are subject to a minimum 15% restocking fee.
The final refund amount is determined after the returned product has been received and inspected by CS Performance.
Products that have only been installed or used briefly and are returned complete and in otherwise good condition will generally be subject to the minimum 15% restocking fee.
Additional deductions may apply if the injectors require significant cleaning, testing, repair, replacement components, or other reconditioning because of their condition when returned.
Heavily Contaminated, Damaged, or Incomplete Returns
Returned injectors should be securely packaged and include all components originally supplied with the order.
If a returned product is excessively dirty, fuel-contaminated, corroded, physically damaged, electrically damaged, altered, improperly modified, missing components, or otherwise requires significant work before it can be safely tested or potentially resold, the refund may be reduced beyond the standard 15% restocking fee.
Additional deductions may take into account factors including:
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The overall condition of the returned injectors
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Cleaning and testing required
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Replacement seals, filters, components, or other parts required
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Repair or reconditioning labor
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Missing components
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Physical or electrical damage
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Alteration or modification
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Reduction in the product's resale value
We evaluate these situations individually rather than applying the same additional deduction to every used return.
If a returned product has been damaged, altered, contaminated, or otherwise affected to the extent that it cannot reasonably be restored to a safe and saleable condition, CS Performance reserves the right to substantially reduce or decline the refund.
Products Believed to Be Defective
A return requested because a customer believes the injectors are defective may first be evaluated under our Lifetime Warranty and testing process.
A customer's description of a product as defective does not automatically exempt the return from the applicable return conditions or establish that the product itself is defective.
If inspection confirms that the return resulted from a defect covered by our warranty or an error by CS Performance, applicable restocking fees may be waived and the issue will be handled according to our warranty or customer-service procedures.
This allows us to determine whether an injector-related concern is caused by the injectors themselves or by another issue within the vehicle's fuel, electrical, mechanical, or installation system.
Advanced Flow-Matching Services
Optional Advanced Flow-Matching is a customized service performed specifically on the customer's injector set.
Advanced flow-matching service charges are non-refundable once the service has been performed.
If the injector set itself otherwise qualifies for return, the merchandise portion of the purchase may still qualify for a refund according to this policy. However, the completed Advanced Flow-Matching service charge will not be refunded.
Custom and Special Orders
Products manufactured, modified, specially configured, sourced, or prepared specifically for an individual customer's application may be considered custom or special-order products.
Custom and special orders are generally final sale once work or preparation has begun and may not qualify for a standard change-of-mind return.
This does not limit a customer's rights when:
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CS Performance supplied the incorrect product
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CS Performance made an order-fulfillment error
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The product has a qualifying issue covered under our Lifetime Warranty
If you are unsure whether an order will be considered custom or special order, please contact us before purchasing.
Return Shipping
For returns resulting from a change of mind, ordering the wrong part, no longer needing the product, or another reason unrelated to an error by CS Performance, the customer is responsible for return shipping costs.
If CS Performance shipped an incorrect product or made an order-fulfillment error, please contact us before returning the item so we can provide the appropriate instructions and assist with return shipping.
We strongly recommend using a trackable shipping service and packaging the injectors securely. CS Performance cannot be responsible for return packages that are lost or damaged during transit to us.
Original Shipping Charges
Original shipping and expedited shipping charges are generally non-refundable when a customer chooses to return an otherwise correctly supplied product.
If a return is required because of an error by CS Performance, applicable shipping costs may be refunded or otherwise addressed as part of the resolution.
How to Request a Return
Please contact CS Performance before mailing your return so we can provide return instructions and make sure the return is handled correctly.
Return requests must be made within 60 calendar days of the original purchase date.
Once a return is authorized, please package the product securely and ship it back promptly according to the instructions provided.
Sending an item back without contacting us first may delay inspection and refund processing.
Refund Processing
Refunds are processed after the returned product has been received and inspected.
The refund amount will be determined according to the product's condition and the applicable terms of this policy.
Eligible refunds are issued to the original payment method whenever possible.
After CS Performance processes a refund, additional processing time may be required before the funds appear on your account. Processing times are determined by your bank, credit-card issuer, or payment provider.
Returns vs. Lifetime Warranty
Our 60-Day Return Policy and Lifetime Warranty serve different purposes.
The return policy allows customers to return eligible products within the return window, including certain installed products subject to the conditions described above.
The Lifetime Warranty applies to qualifying product concerns and may remain available after the 60-day return period has ended.
A warranty claim does not automatically qualify for a refund. Depending on the circumstances and inspection results, warranty service may involve testing, servicing, repair, or replacement in accordance with the applicable Lifetime Warranty terms.
Questions or Return Requests
If you have questions about fitment, returns, warranty coverage, or whether your product qualifies for return, please contact us before sending anything back.
CS Performance Fuel Injection
Email: customercare@cspreman.com
Lifetime Warranty Policy
Last Updated June 2026
Lifetime Warranty
CS Performance Fuel Injection provides a lifetime warranty on our remanufactured fuel injectors.
Our warranty covers:
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Injector testing
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Cleaning
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Rebuilding when applicable
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Replacement if needed
If you experience an injector issue, contact us:
customercare@csperformancefuelinjectors.com
We will provide instructions for warranty service.
Warranty does not cover damage caused by:
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Improper installation
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Fuel contamination
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Electrical issues outside the injector
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Physical modification or damage
