FMI assessed that the exhaust manifolds and downpipes market was valued at USD 14.5 billion in 2025. Sales is expected to reach USD 14.8 billion in 2026 and USD 18.3 billion by 2036. First Fit (OEM) is anticipated to lead by Sales Channel with 83.0% share in 2026 and ICE is set to lead by Powertrain through 2036.