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Product details
Part NameOxygen Sensor
PositionUpstream
BrandWalker Products
Part Number250-21000
UPC00724620016035
Estimate Delivery Date
Have Questions?
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If your vehicle is listed on the fitment table below, the product will fit your car - we guarantee it. All you need to do is to ensure that the vehicle's Year, Make, Model, Trim, and any other notes specified inside the fitment table are respected.
Monitors exhaust gases and reduces pollutants for a cleaner environment.
Coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases.
Determines the oxygen content of the exhaust gas, monitoring the air fuel ratio for combustion efficiency.
Measures oxygen levels to fine-tune air-fuel mixture, improving fuel economy and saving costs.
Coated in with electrodes made of a gas-permeable platinum layer.
Some of the interchangeable part numbers are:
Customer Video Reviews
Watch genuine customer videos showing their upgrades and honest results of similar products
Fitment Table
This product is compatible with these vehicles:
Year
Make
Model
Notes
Position
2003
Chevrolet
Chevy
1.6L
Inline engine
4 cylinders
3.11" bore
3.21" stroke
without Connector
Upstream
2002
Chevrolet
Chevy
1.6L
Inline engine
4 cylinders
3.11" bore
3.21" stroke
without Connector
Upstream
2001
Chevrolet
Chevy
1.6L
Inline engine
4 cylinders
3.11" bore
3.21" stroke
without Connector
Upstream
2000
Chevrolet
Chevy
1.6L
Inline engine
4 cylinders
3.11" bore
3.21" stroke
without Connector
Upstream
2000
Nissan
Sentra
1.6L
Inline engine
4 cylinders
2.99" bore
3.46" stroke
Engine code GA16DE
Upstream
1999
Chevrolet
Chevy
1.6L
Inline engine
4 cylinders
3.11" bore
3.21" stroke
without Connector
Upstream
1998
Chevrolet
Chevy
1.6L
Inline engine
4 cylinders
3.11" bore
3.21" stroke
without Connector
Upstream
1997
Chevrolet
Chevy
1.6L
Inline engine
4 cylinders
2.95" bore
3.54" stroke
without Connector
Upstream
1996
Chevrolet
Chevy
1.6L
Inline engine
4 cylinders
2.95" bore
3.54" stroke
without Connector
Upstream
1995
Nissan
Pickup
2.4L
Inline engine
4 cylinders
3.50" bore
3.78" stroke
B1S1
Upstream
1994
Chevrolet
S10 Blazer
3.1L
V engine
6 cylinders
3.50" bore
3.31" stroke
without Connector
Upstream
1994
Nissan
Pickup
2.4L
Inline engine
4 cylinders
3.50" bore
3.78" stroke
B1S1
Upstream
1993
Chevrolet
S10 Blazer
3.1L
V engine
6 cylinders
3.50" bore
3.31" stroke
without Connector
Upstream
1993
Nissan
Pickup
2.4L
Inline engine
4 cylinders
3.50" bore
3.78" stroke
B1S1
Upstream
1992
Chevrolet
S10 Blazer
3.1L
V engine
6 cylinders
3.50" bore
3.31" stroke
without Connector
Upstream
1992
Nissan
Pickup
2.4L
Inline engine
4 cylinders
3.50" bore
3.78" stroke
B1S1
Upstream
1991
Chevrolet
S10 Blazer
3.1L
V engine
6 cylinders
3.50" bore
3.31" stroke
without Connector
Upstream
1991
Nissan
Pickup
2.4L
Inline engine
4 cylinders
3.50" bore
3.78" stroke
B1S1
Upstream
1990
Nissan
Pickup
1.8L
Inline engine
4 cylinders
3.17" bore
3.39" stroke
Upstream
1989
Nissan
Pickup
1.8L
Inline engine
4 cylinders
3.17" bore
3.39" stroke
Upstream
1988
Nissan
Pickup
1.8L
Inline engine
4 cylinders
3.17" bore
3.39" stroke
Upstream
1987
Nissan
Pickup
1.8L
Inline engine
4 cylinders
3.17" bore
3.39" stroke
Upstream
1986
Nissan
720
2.0L
Inline engine
4 cylinders
3.35" bore
3.39" stroke
B1S1
Upstream
1986
Nissan
Pickup
1.8L
Inline engine
4 cylinders
3.17" bore
3.39" stroke
Upstream
1985
Mercedes-Benz
380SE
3.8L
V engine
8 cylinders
3.46" bore
3.07" stroke
Naturally Aspirated
GAS
Upstream
1985
Mercedes-Benz
380SL
3.8L
V engine
8 cylinders
3.46" bore
3.07" stroke
Naturally Aspirated
GAS
Upstream
1985
Mercedes-Benz
500SEC
5.0L
V engine
8 cylinders
3.78" bore
3.35" stroke
Naturally Aspirated
GAS
Upstream
1985
Mercedes-Benz
500SEL
5.0L
V engine
8 cylinders
3.78" bore
3.35" stroke
Naturally Aspirated
GAS
Upstream
1985
Nissan
720
2.0L
Inline engine
4 cylinders
3.35" bore
3.39" stroke
B1S1
Upstream
1985
Nissan
720
2.4L
Inline engine
4 cylinders
3.50" bore
3.78" stroke
B1S1
Upstream
1985
Nissan
Pickup
1.8L
Inline engine
4 cylinders
3.17" bore
3.39" stroke
Upstream
1984
Mercedes-Benz
380SE
3.8L
V engine
8 cylinders
3.46" bore
3.07" stroke
Naturally Aspirated
GAS
Upstream
1984
Mercedes-Benz
380SL
3.8L
V engine
8 cylinders
3.46" bore
3.07" stroke
Naturally Aspirated
GAS
Upstream
1984
Mercedes-Benz
500SEC
5.0L
V engine
8 cylinders
3.78" bore
3.35" stroke
Naturally Aspirated
GAS
Upstream
1984
Mercedes-Benz
500SEL
5.0L
V engine
8 cylinders
3.78" bore
3.35" stroke
Naturally Aspirated
GAS
Upstream
1984
Nissan
720
2.0L
Inline engine
4 cylinders
3.35" bore
3.39" stroke
B1S1
Upstream
1984
Nissan
720
2.4L
Inline engine
4 cylinders
3.50" bore
3.78" stroke
B1S1
Upstream
1983
Mercedes-Benz
380SEL
3.8L
V engine
8 cylinders
3.46" bore
3.07" stroke
Naturally Aspirated
GAS
Upstream
1983
Mercedes-Benz
380SL
3.8L
V engine
8 cylinders
3.46" bore
3.07" stroke
Naturally Aspirated
GAS
Upstream
1983
Nissan
720
2.4L
Inline engine
4 cylinders
3.50" bore
3.78" stroke
B1S1
Upstream
1982
Mercedes-Benz
380SEL
3.8L
V engine
8 cylinders
3.46" bore
3.07" stroke
Naturally Aspirated
GAS
Upstream
1982
Mercedes-Benz
380SL
3.8L
V engine
8 cylinders
3.46" bore
3.07" stroke
Naturally Aspirated
GAS
Upstream
1981
Mercedes-Benz
280CE
2.8L
Inline engine
6 cylinders
3.54" bore
2.89" stroke
Naturally Aspirated
GAS
Upstream
1981
Mercedes-Benz
280E
2.8L
Inline engine
6 cylinders
3.54" bore
2.89" stroke
Naturally Aspirated
GAS
Upstream
1981
Mercedes-Benz
380SEL
3.8L
V engine
8 cylinders
3.46" bore
3.07" stroke
Naturally Aspirated
GAS
Upstream
1981
Mercedes-Benz
380SL
3.8L
V engine
8 cylinders
3.46" bore
3.07" stroke
Naturally Aspirated
GAS
Upstream
1981
Mercedes-Benz
380SLC
3.8L
V engine
8 cylinders
3.46" bore
3.07" stroke
Naturally Aspirated
GAS
Upstream
1980
Mercedes-Benz
280CE
2.8L
Inline engine
6 cylinders
3.39" bore
3.10" stroke
Naturally Aspirated
GAS
Upstream
1980
Mercedes-Benz
280E
2.8L
Inline engine
6 cylinders
3.39" bore
3.10" stroke
Naturally Aspirated
GAS
Upstream
1980
Mercedes-Benz
280SE
2.8L
Inline engine
6 cylinders
3.39" bore
3.10" stroke
Naturally Aspirated
GAS
Upstream
1980
Mercedes-Benz
450SEL
4.5L
V engine
8 cylinders
3.62" bore
3.35" stroke
Naturally Aspirated
GAS
Upstream
1980
Mercedes-Benz
450SL
4.5L
V engine
8 cylinders
3.62" bore
3.35" stroke
Naturally Aspirated
GAS
Upstream
See what other customers say:
Customer Reviews
Overall rating: 4.9 / 5 from 594 reviews.
I love PartsPioneer. The rear-wheel Positive Plus pads and Genius rotors fit perfectly on my 2019 Subaru Forester. Excellent quality at a fair price. Highly recommended.
Thanks for catching an error in my order and righting it for me, complete with email to say so! This … is what customer service head and shoulders above, looks like !! Well done all !!
Service was great, appreciated the phone call to confirm the vehicle. Parts arrived quick. OEM fit. Will be ordering brakes as you can see by the picture. Very impressed.
I have bought this rotor on part pioneer for my Q3 and installed and used for over a week, they are amazing no squeaks no noises brakes have improved 110%. This rotors are the best so far I’ve always bought rotors and used in all three of my cars and so far these ones are the best that I have ever bought.
Thanks
Renato
Awesome parts, for a great deal, and the customer service is second to none, always willing to help, and they double check fitment to ensure you always get the right parts! Will definitely be ordering again.