AN10 PTFE hose with a stainless steel braid under a black outer jacket, offered here as the extended-run listing. The black covering does two useful things: it hides the braid for a tidier engine bay and it stops the sharp stainless wire from chafing paint, looms and adjacent hoses where lines are routed tightly together. Underneath, the PTFE liner delivers the usual benefits of zero fuel permeation and full compatibility with ethanol and methanol blends as well as hot engine oil. AN10 suits oil cooler feeds and returns, turbo drains, dry sump plumbing and large fuel supply lines. Use hose ends made specifically for black-jacketed PTFE hose.