| Company | Address | City | State | Zip Code | Phone | Fax | Toll Free |
| Knighton's Automotive Machine | 1101 2nd St. NW | Albuquerque | NM | 87102 | 505-247-0257 | | 800-777-4829 |
| RPM Warehouse | 2229 N. 23rd Drive | Phoenix | AZ | 85009 | 602-462-1007 | 602-258-1819 | 877-817-8350 |
| Wholesale Automotive Machine | 6347 Mission Gorge Road | San Diego | CA | 92120 | 619-281-1400 | | |
| ECM Auto | 1619 East Wiltshire Ave. | Santa Ana | CA | 92705 | 714-547-4113 | | |
| Culver Warehouse | 1325 East 18th Street | Los Angeles | CA | 90021 | | | 800-824-0199 |
| Commercial Warehouse Center | 2260 Boxwood St. | Sacramento | CA | 95815 | 510-785-8023 | 916-977-0976 | 800-339-9336 |
| Precision Automotive Diesel | 5330 American Road | Rockford | IL | 61109 | 815-874-7979 | 815-874-7494 | 800-221-0700 |
| Engine Parts of Indy | 2722 Rand Road | Indianapolis | IN | 46241 | 317-248-2423 | | |
| Engine Parts & Machine | 361 Wilson Ave. | Minneapolis | MN | 55413 | 612-623-3921 | | |
| CPW-KC | 1801 Linn St. | Kansas City | MO | 64116 | 816-842-6880 | 816-221-0575 | 800-888-8648 |
| Kannapolis Engine Service | 1450 N Main Street | China Grove | NC | 28023 | 704-857-7416 | 704-855-0828 | 800-932-7416 |
| Automotive Products Dist. | 60 Dickerson St | Newark | NJ | 07103 | 973-481-0078 | 973-485-1503 | 800-426-8877 |
| R.J. Templeton | 230 East Burnside | Portland | OR | 97214 | | | 800-452-4752 |
| Headquarters QualCast LLC | 1854 Air Lane Drive, Unit 10 | Nashville | TN | 37210 | 615-777-3863 | 615-777-0464 | 888-432-4552 |
| ARC Commercial Warehouse | 759 Bradfield Ave. | Houston | TX | 77060 | 281-931-8555 | | 866-931-8555 |
| San Antonio Auto. Whse | 4603 Rigsby Ave | San Antonio | TX | 78222 | 210-227-8281 | 210-227-4839 | |
| Rol Warehouse | 8930 Governor's Row | Dallas | TX | 75247 | 214-637-6355 | 214-637-5513 | 800-888-6958 |