The aFe Power Twisted Steel short‑tube header for 1983–2002 Jeep Wrangler (YJ) 2.5L L4 uses pulse‑control design with optimized tube lengths and mitered collectors to improve flow and midrange response. Constructed from 409 stainless steel with a 1/2" thick flange, it’s a 100% bolt‑on installation requiring no modifications and engineered for durable, streetable performance.
aFe Power Twisted Steel Exhaust Headers 409 Stainless Steel 83-02 Jeep Wrangler (YJ) L4 2.5L