SRS Exhaust Systems 4-2-1 Exhaust Header Stainless Steel (Honda D-Engines)

Description

This d engine 4-2-1 header is the genuine SRS stainless 4-2-1 manifold for Honda D-engines. SKU HPH-CV88421SD. SUS 304 polished, direct-fit, gaskets included, designed for maximum low-to-mid power versus a log manifold.

D engine 4-2-1 header specs

Direct-fit 4-2-1 manifold: SUS 304 polished stainless. A d engine 4-2-1 header stages the merge for stronger mid-range pull. It is not the sister 4-1 D-engine header (d engine 4-1 header) and not a B-series manifold.

Install this d engine 4-2-1 header on a cold engine with a fresh d engine header gasket, torque evenly, and re-check after the first heat cycle. Confirm O2 bung position before the road test. Genuine SRS from MCG Autostyling in Kells, Co. Meath with fast delivery across Ireland.

This D engine 4-2-1 header is listed for Honda D-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. Pair with a matching midsection and catback when you want a full SRS D-engine exhaust path.