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.

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

Featured Products

General SKU: V36H

2005 - 2007 Plug & Play SAIS Bypass Kit

58 Review(s)

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

$190.00

Select Your Vehicle, Year, Engine:

Tundra, 2005-2007, 4.7L (2UZ-FE) V3647HTundra, 2007, 5.7L (3UR-FE) V3657HTundra, 2007, 4.0L (1GR-FE) V3640H4Runner, 2005-2007, 4.7L (2UZ-FE) V3647HSequoia, 2005-2007, 4.7L (2UZ-FE) V3647HLexus LX470, 2006-2007, 4.7L (2UZ-FE) V3647HLexus GX470, 2005-2007, 4.7L (2UZ-FE) V3647HLandCruiser, 2006-2007, 4.7L (2UZ-FE) V3647HTacoma, 2007, 2.7L (2TR-FE) V5427H (Add $40.00)Tacoma, 2005-2006, 2.7l (2TR-FE) V3627HHilux, 2005-2007, 2.7L (2TR-FE) V3640H

General SKU: GenII

Gen-II SAIS Bypass Kit

31 Review(s)

The best and most comprehensive solution available for all vehicles! Emulates the entire system by replacing the air injection control driver(s). Check the 3V version if you don't see your vehicle listed here. Click for more info.

$400.00

Select Your Vehicle, Year, Engine:

Tundra, 2007-2019, 5.7L(3UR-FE and 3UR-FBE Non Flex & Flex Fuel) G2-2B57H1Tundra, 2010-2013, 4.6L(1UR-FE) G2-2B46H2BTundra, 2014-2019, 4.6L(1UR-FE) G2-2B46H2Tundra, 2007-2010, 4.0L(1GR-FE) G2-2B40H4Tundra 2011-2014, 4.0L(1GR-FE) G2-1B40H2Tundra, 2007-2009, 4.7L(2UZ-FE) G2-2B47H2Tacoma 2005-2019 2.7L(2TR-FE) G2-1B27H7Tacoma, 2012-2015, 4.0L(1GR-FE) G2-1B40H3 5.7PSequoia, 2010-2012, 4.6L(1UR-FE) G2-2B46H2BSequoia, 2008-2009, 4.7(2UZ-FE) G2-2B47H2Sequoia, 2008-2019, 5.7L(3UR-FE, 3UR-FBE Flex Fuel) G2-2B57H1Landcruiser, 2008-2011,2013-2019, 5.7L (3UR-FE) G2-2B57H1Landcruiser Prado, 2008-2012, 4.0L(1GR-FE) G2-1B40BLandcruiser J200, UZj200, 2008-2012, 4.7L (2UZ-FE) G2-2B47H2GX460, 2010-2013, 4.6L(1UR-FE) G2-1B46H2BGX460, 2014-2019, 4.6L(1UR-FE) G2-1B46H2LX570, 2008-2011,2013-2019, 5.7L(3UR-FE) G2-2B57H1FJ Cruiser, 2013-2014, 4.0L(1GR-FE) G2-1B40H2 5.7P4Runner, 2013-2019, 4.0L(1GR-FE) G2-1B40H2 5.7PHilux, 2005-2021, 2.7L(2TR-FE)