this sensor have the wire leads and connector ends on it you do not show this in the photo or do i have to splice wires to it ?

No splicing at all. There will be a plastic connector. Actually that was the hardest part to get the old one disconnected. Needed more light to see how the connector flocked together.

Code p0031 from car scanner from my "toyota 4runner v8 2003". is this right parts? how many (one or two) do i need?

Yes it is very good product and I purchased only one it working great on my Toyota.

Denso 234 4138 Oxygen Sensor | Desertcart UNITED STATES

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Specifications

ASIN	B000C5YCUW
Best Sellers Rank	#139,414 in Automotive ( See Top 100 in Automotive ) #372 in Automotive Replacement Oxygen Sensors
Brand	Denso
Brand Name	Denso
Customer Reviews	4.6 out of 5 stars 256 Reviews
Global Trade Identification Number	00042511141384
Included Components	Oxygen (O2) Sensor
Item Dimensions	5.75 x 2.19 x 1.88 inches
Item Type Name	Oxygen Sensor
Item Weight	4 ounces
Item dimensions L x W x H	5.75 x 2.19 x 1.88 inches
Manufacturer	Denso
Material	Stainless Steel, Zirconium
Material Type	Stainless Steel, Zirconium
Measurement Accuracy	High
Model	234-4138
Mounting Type	Thread-In
Output Type	electrical signal
Part Number	234-4138
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Replacement Oxygen (O2) Sensor
Style	Replacement Part
Style Name	Replacement Part
UPC	042511141384
Unit Count	1.0 Count
Upper Temperature Rating	1562 Degrees Fahrenheit
Warranty Description	Includes manufacturer provided warranty

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$186.59

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In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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Denso 234-4138 Oxygen Sensor

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Description

Specifications

Common Questions