Exhaust Manifold for Volvo S70 V70 (1997-2000) 2.4L I5 EngineHigh Flow Tubular Exhaust Header for 1997 2000 Volvo V70, S70 (Modular I5 P80) Upgrades the restrictive factory cast iron exhaust manifold to a tubular 5 1 stainless steel header, reducing cylinder backpressure and lowering exhaust gas temperatures. The Stock Volvo P80 Exhaust Restriction The OEM cast iron exhaust manifold on the P80 chassis Volvo V70 and S70 is engineered primarily for mass production cost efficiency rather than optimized exhaust