2007 toyota tundra crewmax 02 sensor correct Denso replacement fitment

Research is everything on correct 02 sensors. and AF se nsors.
Upstream on both banks, are AF sensors downstream are 02 sensors.
Correct fitments are for 2007 Tundra are using your vin # to correctly replace these. Why, like California Toyota Truck emissions systems require different Denso sensors
DENSO Sensors only,
My Tundra is a made in Texas Truck, see drivers door placard it will tell you. Using vin # On Denso Website will give you your Denso correct codes, but if you have issues, use their contact us, and you'll get a technician.
example my Tundra,
1.all upstream "AFR" SENSORS
ARE DENSO # 234-9026 BOTH BANKS
2. BANK 1 (DRIVERS) SIDE
downstream (Right side) 02 SENSOR is DENSO #

$50 234-4624 Upstream Heated Oxygen Sensor for Toyota/Lexus with 16” Wire and 4-Prong Plug, 0.26 Pounds

234-4624
3. BANK 2 (Passenger side) downstream (left) is DENSO # 234- 4624
By vin # yours could be different. Every site that sell Denso and others never ask for vin#s. and you may be replacing with wrong items.
Important to understand what AF and 02 Sensors actually do, when communicating with ECU. Hope this helps

 

Cali super sucks with all the restrictions. My SC400 had to have a California specific ECU vs Federal ECU... Cali is twice as much as a regular Fed ECU.... In today's standards upstream sensors should be '50 state' type sensors. There is a reason why they sell under '50 state' (mostly Cali req) emissions.