Engines and Components› Engine Covers, Pans and Dress-Up Components

ICT BILLET

Intake Port Adapter Cath edral Head to LS3

$241.66

SKU: I01V 551316

In Stock
In Stock
Ships by Jun 8
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The ICT Billet 551316 is an intake manifold adapter designed to mate cathedral port cylinder heads with rectangle port intakes, superchargers, or blowers. These 1/2" thick adapters are made in the USA from aerospace-grade billet aluminum. They are compatible with any cathedral port heads and any rectangle port intakes, but will not fit raised port LS7 intakes.

Fitment

Fitment Guaranteed

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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.

Available on iOS & Android

Specifications

BrandICT BILLET
Part NumberI01V 551316

Videos

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LS Cathedral Port Cylinder Head to Rectangle Port Intake Manifold Adapters - Link in Description!
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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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