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    Shipping and Return Policy

    Shipping Policy

    Orders are generally shipped within 1–3 business days after your order is processed. Transit time is typically an additional 3–5 business days, depending on the shipping method selected at checkout.

    Orders are processed Monday–Friday during normal business hours. Orders placed on weekends or holidays will begin processing the next business day.

    Please note that transit times are estimates provided by the carrier and are not guaranteed. CFM Diesel Performance is not responsible for delays caused by the carrier, weather, or other circumstances beyond our control.

    Returns Policy

    Damaged or Defective Items
    You may return damaged or defective merchandise within 10 days of the original purchase date for a full refund, minus original shipping charges. Please contact us as soon as possible after receiving a damaged or defective item so we can issue a Return Merchandise Authorization (RMA) and resolve the issue quickly.

    Non-Defective Returns (Changed Mind / Ordered Wrong Part)
    Unused, uninstalled items in original packaging with all hardware and manuals included may be returned within 10 days of the original purchase date. A restocking fee of 10–20% may apply, and return shipping is the responsibility of the customer.

    Items Excluded from Return

    • Electrical components (tuners, ECMs, sensors, modules) that have been opened, installed, or plugged into a vehicle
    • Special order or drop-shipped items, which are subject to the manufacturer's return policy
    • Custom-tuned or custom-built parts
    • Core charges on rebuilt components are handled separately — see core return terms

    Return Process
    All returns require an RMA number prior to shipping the item back. Items returned without an RMA may be refused or delayed. Once your return is received and inspected, refunds are typically processed within 5–7 business days to your original payment method.

    Fitment Responsibility
    Please confirm your vehicle's year, make, model, and engine at checkout. Returns due to incorrect fitment selected by the customer will follow the standard non-defective return process above.