SRS 4-2-1 Exhaust Manifold Stainless Steel (B16A1-Engines)

Description

This b16a1 4-2-1 header is the genuine SRS stainless 4-2-1 manifold for Honda B16A1 engines. SKU HPH-CV90421SB16A1-2H. Polished stainless, direct-fit, gaskets included, designed for maximum low-to-mid power. It has two lambda sensor connections — one sensor lead needs to be lengthened on install.

B16A1 4-2-1 header specs

Direct-fit 4-2-1 manifold with dual O2 bungs. A b16a1 4-2-1 header is the standard-pipe sister to the 2.5 inch B16A1 header (b16a1 2.5 header). Choose this when you want mid-range pull and dual-sensor support rather than the freer 2.5 high-end package.

Install this b16a1 4-2-1 header on a cold engine with a fresh b engine header gasket, torque evenly, and re-check after the first heat cycle. Plan the longer lambda lead before the first start. Genuine SRS from MCG Autostyling in Kells, Co. Meath with fast delivery across Ireland.

This B16A1 4-2-1 header is listed for Honda B16A1 engines. Confirm exact vehicles on the Fitments tab before ordering.

After install, listen for flange leaks and re-torque cold. Keep heat shields clear of bodywork and fuel lines. Do not confuse this SKU with the 2.5 B16A1 header or D-engine manifolds.