Welcome To the Hewitt Technologies Inc. Store.

Home of the Hewitt-Tech Toyota/Lexus Secondary Air Injection System Bypass Kits. These kits offer a cost effective solution for the failure prone Secondary Air Injection Systems found on certain Toyota truck and SUVs. The bypass kit can prevent many of the trouble codes caused by a mechanical failure of the secondary air pump or a secondary air valve saving you as much as a $2000-$4000 on a repair bill, turn off your CEL and keep the vehicle out of limp mode. The kit is not a fix all solution so check our codes section and installation instructions for more info on how the kit can help you. You can also use the Contact Us page to contact us with any questions regarding the bypass kit, shipping or your trouble codes.

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Click on the Product Category Listings at Top Left or a Featured or Bestseller image to view the Full Product Descriptions

Featured Products
2005 - 2007 Plug & Play SAIS Bypass Kit
SKU: V36H
$259.00
5.0 Out Of 5 (5.0 on 44)
The Hewitt-Tech SAIS Bypass Kit Plug and Play prevents operation of the SAIS at cold start thus letting you clear your related trouble codes, the CEL and Limp mode and installation ma
Select Your Vehicle, Year, Engine:
2008 - 2014 Plug & Play SAIS Bypass Kit
SKU: V54H
$349.00
5.0 Out Of 5 (5.0 on 26)
Plug and Play Bypass Kit Covers 2008-2012 and select 13 and 14 models vehicles. Can prevent many of the trouble codes caused by a mechanical failure of the SAIS System.
Select Your Vehicle, Year, Engine:
2005 - 2007 Wired SAIS Bypass Kit
SKU: V36W
$168.00
5.0 Out Of 5 (5.0 on 13)
The Hewitt-Tech Wired SAIS Bypass Kit prevents operation of the SAIS at cold start thus letting you clear your related trouble codes, the CEL and Limp mode. Installs by wiring direct
Select Your Vehicle, Year, Engine:
Next Gen. Bypass Kits - Coming Soon!
SKU: GenII
$0.00
Check full description for update! Our Next Gen. Bypass Kits are a huge leap forward compared to all previous bypass kits. Why just stop the system from running when you can completely remove it!