Exhaust› Headers, Manifolds and Components

Killer B

Holy Header 4-1 Equal-Length Exhaust Manifold

$2,445.00

SKU: KILHH4-1-SWAIN

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Killer B Motorsport Holy Header is a 4-1 equal-length exhaust manifold designed to optimize exhaust flow and improve turbocharger performance. Constructed from thick-walled 321 stainless steel for durability, it features a cast 347 stainless collector for reduced turbulence and a true high-velocity merge. The header includes a V-band up pipe connection for easy installation and is SWAIN coated to reduce engine bay temperatures and protect against heat soak.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandKiller B
Part NumberKILHH4-1-SWAIN
CategoryExhaust

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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