Kit Addons

These Kit "Addons" let the bypass kit to take care of trouble codes that the kit by itself cannot.

A bypass kit MUST be installed to use any of these kit Addons.

The Pressure Sensor Harness can take care of these codes when added to a kit:

P2431 - Air Flow / Pressure Sensor Circuit Range / Performance Bank1
P2432 - Air Flow / Pressure Sensor Circuit Low Bank 1
P2433 - Air Flow / Pressure Sensor Circuit High Bank 1
P2436 - Air Flow / Pressure Sensor Circuit Range / Performance Bank 2
P2437 - Air Flow / Pressure Sensor Circuit Low Bank 2
P2438 - Air Flow / Pressure Sensor Circuit High Bank 2
P106B - Pressure Sensor Correlation / Evap. Pressure Sensor
Only vehicles with two pressure sensors (one must be good) can take advantage of the Pressure Sensor Jumper Harness. The vehicle wiring must be checked first before using this addon. Any cut, damaged or broken wires or connectors must be repaired or this part may not work. 

The Pump Replacement Pack can take care of one of these codes when added to a kit:

P0418 - Relay 'B' Circuit Malfunction
P0419 - Relay 'B' Circuit Malfunction
Usually caused by an open circuit/damaged air pump motor. One pack is needed for each code.

Codes the kits can take care of with the addition of one or two Valve Replacement Packs

P0412 - Switching Valve 'A' Circuit Malfunction
P0415 - Switching Valve 'B' Circuit Malfunction
Usually caused by an open circuit of the solenoid coil in one of the Air Switching Valves. A = Bank1 ASV Solenoid B = Bank2 ASV Solenoid. One pack is needed for each code.

Please also check out our Codes Section for a full list of codes with descriptions and our Installation Instructions page for more information or use the Contact Us page to ask any questions you may have before ordering.

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Pressure Sensor Harness (PSH)
SKU: PSH
$50.00
The Pressure Sensor Harness when added to a SAIS Bypass Kit will let you also take care of a damaged Air Pressure Sensor without the need to replace an expensive air switching valve! Click product for more details and compatibility.
Select Your Vehicle:
Pressure Sensor Replacement (PSR-Single)
SKU: PSR-Single
$50.00
The PSR, is a direct replacement for the no longer available Toyota factory pressure sensors 89421-71010 and 89421-71030. These pressure sensors are used in all 05-07 4.7L vehicles and all of the 07-10 4.7L Except Tundra as well as the 2.7L Tacomas.
Select Your Vehicle:
Exhaust Valve Block-Off Plates
SKU: BOP
$55.00
The Exhaust Valve Block-off Plates are an integral part of the bypass kit. The plates are made from 1/8" 316 Stainless Steel designed for lifetime use.
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Valve Replacement Pack
SKU: VRP
$75.00
This Valve Replacement Pack addon will take care of a P0412 or P0415 code when added to a bypass kit without having to replace an expensive air switching valve. We can combine some addons into a custom harness. Call to order custom harnesses.
Pressure Sensor Replacement (PSR-Double)
SKU: PSR-Double
$125.00
The PSR Addon uses an equivalent Toyota Sensor and a custom harness to replace the damaged pressure sensors in your air switching valve without having to replace the expensive air switching valves. Can also be customized with valve packs.
Select Your Vehicle:
Pump Replacement Pack (PRP)
SKU: PRP
$155.00
5.0 Out Of 5 (5.0 on 1)
An alternative to replacing the SAIS Air Pump that is causing a P0418 or P0419. This is just a proxy for the bad pump must have bypass kit installed to use. Big labor/money saver! Must Be Installed With A Bypass Kit!