TooHighPsi

KATANA Port Injection Plates

$719.95

SKU: THP-KATANA

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The TooHighPsi KATANA Port Injection Plates are precision-machined billet aluminum components engineered for GM LTX and L8X engines. These plates provide a robust platform for port fuel injection, allowing for enhanced fuel delivery to support higher performance demands. They are designed to be compatible with LS3-style short injectors (34mm O-ring spacing) and offer fuel rail fitting options of -6AN or -8AN. The product requires careful consideration of engine and supercharger/intake manifold fitment, with options available for various configurations including Magnuson, Stock LT4, Stock LT1, Stock Truck, and more. Additionally, users must select the appropriate coil relocation option based on their valve cover setup and whether injector extensions are needed for their specific injector configuration.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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

BrandTooHighPsi
Part NumberTHP-KATANA
CategoryAir and Fuel

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

Returns & Fitment

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.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

View Full Shipping Policy