Product images and videos 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.

Air and Fuel› Air Cleaners, Filters, Intakes and Components

Ktuned

3.5-Inch Cold Air Intake

Name: 3.5-Inch Cold Air Intake
Brand: Ktuned
SKU: KTD-CA8-35F

$290.99

SKU: KTD-CA8-35F

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Easy — 1–2 hours

Overview

The K-Tuned Cold Air Intake Upgrade Piece is designed for the 8th and 9th generation Honda Civic Si models when equipped with an RBC manifold. This component is an upgrade only and requires a Flashpro or KTuner for proper operation.

Show original supplier description

The K-Tuned 3.5" Cold Air Intake (KTD-CA8-35F) is a performance upgrade designed specifically for the 8th generation Honda Civic Si (2006-2011) equipped with the K20Z3 engine. This intake system features a 3.5-inch diameter pipe to significantly increase airflow to the engine compared to the stock setup. It is designed as an upgrade piece, intended to be used with an existing K-Tuned Short Ram Intake for the 8th Gen or 9th Gen w/RBC Manifold. Installation requires either a Hondata Flashpro or KTuner tuning device to properly manage the engine's air-fuel ratio and optimize performance. It is important to note that this is an upgrade part and not a complete kit. The KTD-CA8-35F does not fit the base model Civic Si. Additionally, users with a 3-inch Short Ram intake will need to purchase a separate 3.5-inch air filter. V-Stack style filters may not fit behind the headlights. For complete intake kit options, refer to the 8th Gen Intake Short Ram and CAI or 9th Gen RBC Intakes Short Ram and CAI.

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

Brand	Ktuned
Part Number	KTD-CA8-35F
Category	Air and Fuel

Videos

K Tuned 8th gen CAI

Installing K-Tuned Short cold air intake for my Civic Si (Behind the Headlight)

INSANE Performance Upgrade: RBC Intake, K-Tuned Parts, & More( Honda Si 9th Gen and 100HP More)

8th Gen Civic Si | K-Tuned Cold Air Intake Review | VTEC Paradise | 1440p

Installing K-tuned Honda Civic Si battery relocating tray (8th Gen)

Finishing my K-tuned Ram air intake - Honda Civic Si (8th Gen)

9th Gen Civic si K-Tuned 3.5 inch Short Ram Intake Unboxing an Install!

K tuned 3.5 cold air intake/install fa5 civic si 8th gen civic si

Ktuned 3.5in intake install (Best daily intake for 8th gen si?!?!)

The Si Gets a K-Tuned Intake!

8th Gen / RSX updates and K-Tuned 72mm Throttle Body Install

9TH GEN CIVIC SI / KTUNED 3" INTAKE INSTALL

K-TUNED 9TH GEN CIVIC SI AIR INTAKE & VELOCITY STACK

5,000+ Trusted brands

1M+ Enthusiasts

5M+ Parts sold

(760) 282-4645 hello@motormia.co

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.

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.

View Full Shipping Policy