MAC Products Warranty -

Warranty Contact Info:
If you have a warranty concern or question, please contact us via phone at (254) 296-6500 or via email at

MAC Products Limited Warranty
M.A.C. Products items are warranted against manufacturers defects, or workmanship, for 1 year after invoice date. M.A.C. Products warranty shall be limited to replacing the unit or component thereof, provided it is not damaged by impact, neglect, modification, improper application, exposure to corrosives, or deterioration caused by weather or wear.

Shop labor or any other costs are not included in this warranty. If MAC part was purchased through online retailer, you must deal with the seller.

Exhaust Discoloration (Blueing)
Discoloration of the exhaust, or blueing, is caused by engine conditions such as cam timing, fuel-to-air mixture, operating temps, etc. It is not a result of defective manufacturing, therefor it is not covered by any warranty.

Return of Merchandise
Merchandise may not be returned without a return authorization number from M.A.C. Products. A copy of the original sales receipt must be enclosed with return. A 15% handling charge will be made on all returned merchandise unless due to M.A.C. Products own error. Freight must be prepaid on all return merchandise. No stock adjustment returns accepted after 90 days.