Terms of service

Last updated: October 22, 2026

1. About These Terms

These Terms of Service govern purchases from and use of the WIHMCCK AUTO PARTS online store. Our store is hosted on Shopify. WIHMCCK AUTO PARTS handles product inquiries, orders, fulfillment, returns, and warranty requests. You may contact us at info@stpartsgroup.com.

Please review these terms together with our Shipping Policy, Return, Refund and Warranty Policy, and Privacy Policy before ordering. Nothing in these terms limits rights or remedies that cannot be excluded under applicable law.

2. Product Identification and Fitment

We sell automotive and engine parts. Unless a listing expressly states otherwise, products are aftermarket replacements, not genuine vehicle-manufacturer parts. OE numbers, trademarks, engine names, and vehicle names are used to identify intended applications and do not imply affiliation or endorsement.

Compatibility may vary by engine serial number, build date, configuration, and the original assembly. Before ordering or installing, compare the original part number, mounting points, ports, connectors, dimensions, and package contents with the listing. A model name or year range alone does not establish fitment. Contact us before ordering if you are unsure. These checks do not remove our responsibility for an incorrect or misleading listing.

Follow the vehicle or engine manufacturer's service instructions and use a qualified installer where appropriate. Do not install or operate a part that appears damaged, incorrect, or unsafe.

3. Orders, Availability and Payment

Provide accurate billing, shipping, and contact information and use a payment method you are authorized to use. Available payment methods are shown at checkout. Prices are in U.S. dollars unless expressly stated otherwise. Any applicable taxes and additional charges are displayed at checkout before payment.

Orders are subject to payment verification and product availability. An automated order acknowledgment confirms receipt of the order, not shipment. If an item is unavailable, payment cannot be verified, or a material listing or pricing error affects your order, we will contact you to explain the issue. We will not substitute an item or charge a higher price without your agreement. If an order is canceled after payment, the canceled amount will be refunded to the original payment method.

4. Changes and Cancellation Requests

To request an address change, order change, or cancellation, email us promptly with your order number. We will check whether the request can be accommodated. A request is not confirmed until we reply, and changes or cancellation may not be possible once fulfillment has progressed. If the order has shipped, please follow our return process.

5. Shipping and Delivery

We ship from our U.S. warehouse and provide free standard shipping with no minimum order to the contiguous 48 U.S. states. Other destinations are currently outside our shipping area. On business days, tracking numbers are uploaded the same business day. A tracking upload does not itself confirm carrier pickup. Estimated transit time is 2–7 business days after carrier pickup; delivery dates are estimates, not guarantees. For expedited options, contact us before ordering to confirm availability and any extra charge. See our Shipping Policy for details.

6. Returns, Refunds and One-Year Warranty

You may request a change-of-mind return within 30 days after delivery. Such items must be uninstalled, unused, and complete with all included parts and accessories. Customers pay return shipping for non-quality returns, and we do not charge a restocking fee. Obtain return authorization and the designated U.S. warehouse address before sending an item back.

Products carry a one-year warranty from delivery for defects in materials or workmanship under normal use. Installed products with suspected quality issues are handled through the warranty process. Damage caused by incorrect installation, misuse, modification, or an incompatible application is not a manufacturing defect. For damaged, defective, or incorrectly supplied items, contact us first so we can assess and arrange a suitable resolution. The full process is described in our Return, Refund and Warranty Policy.

7. Website Use and Privacy

Do not use this store for unlawful transactions, submit fraudulent information, interfere with website security, or misuse another person's account or payment information. Personal information is handled as described in our Privacy Policy. Payment services may also be subject to the payment provider's own terms.

Store text, branding, and original media may be protected by intellectual property rights. Third-party marks remain the property of their owners. External links are provided for convenience; third-party websites operate under their own terms.

8. Updates and Assistance

We may update these terms for future use of the store and future orders. Updates will be posted here with a revised date and will not retroactively reduce the rights agreed for an existing order. For questions or help resolving an order issue, email info@stpartsgroup.com with your order number and relevant product details.