The Acura Knock Braided Stainless Steel Sub Wiring Harness, is enclosed in a stainless steel sleeve.Do it right the first time and Save money, install your own Knock Stainless Steel Sub Wiring Harness.(Known as the Rat Wire).The old knock wire is made of soy coated wire that rats and mice love to eat.The service guy said the engine light was on because a mouse chewed "the knock sensor wire." This is common on Acura's 3.2 engines.The Stainless Steel Sub Wiring Harness is made of soft lay stainless Steel and bends easy and won't rust.The Rats and mice won't eat the stainless steel.