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Air and Fuel› Intake Manifolds and Components

Katech

87mm CNC-Ported Throttle Body

$399.99 $382.17 Save $17.82

SKU: KAT-A6856

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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Katech KAT-A6856 is a new, CNC-ported 87mm GM throttle body designed to improve airflow, pedal feel, and throttle response over stock units. It is engineered for LT1, LT2, LT4, L86, and L87 engines.

This throttle body offers horsepower gains of up to 10hp on naturally aspirated vehicles, and even more on supercharged applications. It fits various GM vehicles including the C8 Corvette, C7 Corvette, Gen 6 Camaro, Gen 3 CTS-V, and trucks/SUVs like the Silverado, Sierra, Tahoe, Yukon, and Escalade equipped with the L86/L87 engine.
Show original supplier description
The Katech KAT-A6856 is a new GM 87mm throttle body that has been CNC ported to optimize performance. Engineered for Gen 5 LT1, LT2, LT4, L86, and L87 engines, this throttle body is capable of providing horsepower gains of up to 10hp on naturally aspirated applications. For supercharged vehicles, the gains can be even more substantial, making it a popular choice for performance enthusiasts. This throttle body is compatible with a range of GM vehicles, including the C8 Corvette, C7 Corvette, Gen 6 Camaro SS and ZL1, Gen 3 CTS-V, as well as Silverado, Sierra, Tahoe, Yukon, and Escalade models equipped with the L86/L87 engine. It is crucial to note that this product DOES NOT fit 2022 and newer trucks and SUVs that utilize a 5-terminal throttle body. Buyers are advised to inspect their vehicle's throttle body connector prior to ordering to ensure compatibility.

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

BrandKatech
Part NumberKAT-A6856
CategoryAir and Fuel

Videos

Katech CNC Ported LT1 LT4 L86 Throttle Body

Katech CNC Ported LT1 LT4 L86 Throttle Body
Camaro ZL1 1LE LT4 - Katech 103mm Throttle Body Install

Camaro ZL1 1LE LT4 - Katech 103mm Throttle Body Install

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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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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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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