Mack 688GC2378 Exhaust Valve PAI 81450 (Pack2)

Orders are shipped exclusively within the United States and are processed within one (1) to three (3) business days after payment is received. Products ship directly from our supplier or distribution partner. Estimated delivery times range from seven (7) to fifteen (15) business days and are not guaranteed. Tracking information will be provided once the order ships and may take several days to update. Shipping charges are shown at checkout and are non-refundable once an order has been processed or shipped. We do not profit from shipping fees, which are passed directly from the carrier. For full details please review our Shipping Policy.

Return requests are accepted within thirty (30) days of delivery and require prior authorization from Truck Supply Parts. Returned items must be new, unused, uninstalled, clean, and in original packaging in resalable condition. Returns sent without authorization or to an incorrect address will not be accepted.

Approved returns are subject to a twenty-five percent (25%) restocking fee. Special order and obsolete items are not eligible for return. Shipping charges are non-refundable. Returns resulting from shipping errors or damage caused by Truck Supply Parts will not be subject to restocking fees.

Approved refunds are processed within seven (7) to ten (10) business days after inspection and approval. For full details please review our Return & Refund Policy.

Most products sold by Truck Supply Parts include a manufacturer’s warranty of one (1) to two (2) years, depending on the product.
All warranty claims require prior authorization before any item is returned. Products must not be installed, used, or returned in damaged or altered packaging.

Warranty evaluations are subject to inspection and may take thirty (30) to sixty (60) days for review and approval. Claims for damaged items, shortages, or shipping errors must be reported within five (5) business days of delivery.

Returns or warranty claims submitted without prior authorization will not be accepted. For full details please review our Return & Refund Policy and Terms & Conditions.

By placing an order with Truck Supply Parts, customers agree to our full Terms & Conditions. Orders may be canceled or refused at our discretion due to out-of-stock items, obsolete or discontinued products, pricing errors, or order discrepancies.

Delivery estimates are based on supplier and carrier information and are not guaranteed. Freight and shipping charges are non-refundable once an order has been processed or shipped. Customers are responsible for verifying order accuracy and product fit prior to installation.

All approved returns are subject to prior authorization and applicable restocking fees. These Terms & Conditions are governed by the laws of the State of Florida, with jurisdiction in Miami-Dade County. For full details please review our official Terms & Conditions.