Features At A Glance: High-tech CIF (Carbon Impregnated Fiber) core for great energy delivery at an affordable price. CIF core provides RFI suppression for even the most sensitive on-board electronics, such as electronic ignition, sound systems, or computer controls. 8MM ozone-resistant black silicone jacket repels water, oil, grease, and fuel and withstands temperatures up to 500 degrees. Fits V8, With 90 Degree Plug Boots