| Business | Phone |
| Cylinder Head City 7261 Ethel Ave # A, North Hollywood 91605 | (818) 765-5757 |
| Kar Engine & Parts Co 11501 Sherman Way, North Hollywood 91605 | (818) 982-5533 |
| Power Engine 8237 Lankershim Blvd # D, North Hollywood 91605 | (818) 255-5373 |
| Metric Engine 5722 Tujunga Ave, North Hollywood 91601 | (818) 505-9988 |