Air and Fuel› Intake Manifolds and Components

FAST (Fuel

LSX 92mm Intake Manifold

$1,208.57

SKU: 244-54039B

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The FAST LSX intake manifold is a 3-piece composite manifold designed to increase performance without sacrificing low-end drivability or high-rpm horsepower. It bolts directly onto GM Gen III (LS1, LS2, and LS6) engines with cathedral port cylinder heads. This black plastic manifold features a 92mm throttle body bore size and includes runners.
Show original supplier description
The FAST LSX 92mm Intake Manifold is a three-piece composite manifold engineered to deliver increased performance for GM Gen III (LS1, LS2, and LS6) engines. Designed to easily bolt on, this manifold works seamlessly with the 92mm FAST Big Mouth throttle body and features a stylish black finish. Its construction utilizes high-strength polymer and includes corrosion-free stainless steel assembly bolts. This manifold boasts a 92mm throttle body opening and a cathedral port style, suitable for engines such as the 5.7L V8 LS1/LS6. It is designed to operate effectively within an RPM range of 1,800-6,000. The design maintains performance gains without compromising bottom-end drivability or high RPM power, and it is rated for boost pressure up to 45 psi continuous. The velocity stacks are tall and can be interchanged with medium or short versions for customization. Included with the manifold are stainless steel bolts and threaded insert throttle body mounts. The manifold's design also allows for potential porting by the customer for further flow enhancement.

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

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Specifications

BrandFAST (Fuel
Part Number244-54039B
CategoryAir and Fuel

Videos

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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.

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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.

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