I received the goods. They look the same, but how do you differentiate Downstream/Upstream?

They look the same cause they are the same. Meaning they will only fit either upstream or downstream. It’s not an complete set of O2 sensors for all four oxygen sensors

will these o2 sensors replace all 4 sensors on a 2005 grand marquis 4.6 liter v8?

I put all 4 in a 95 Ford Windstar a couple weeks later the engine light came back on

this sensors works with the explorer 2010 4.6L ?

Be sure to check the wiring connection also make sure they are upstream and or downstream that you need

I purchased these for my wife's 1996 Ford Mustang but how can you tell which ones are upstream and downstream ?

They are all the same, I think upstream and downstream are for the purpose of identifying the position of a detective sensor.

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🛠️ Upgrade your ride’s brain with precision oxygen sensing!

EASY INSTALLATION - Plug-and-play design means minimal downtime—get back on the road faster and stress-free.
DURABILITY GUARANTEED - Backed by a 1-year warranty, offering peace of mind and reliable long-term performance.
FUEL EFFICIENCY BOOSTER - Accurate oxygen sensing helps your engine run cleaner and more efficiently, saving you money at the pump.
UNIVERSAL COMPATIBILITY - Fits a broad range of Ford, Lincoln, Mazda, Mercury, and even Aston Martin models—covering your fleet with one purchase.
PRECISION ENGINE PERFORMANCE - Direct replacement for multiple OEM part numbers ensures seamless integration and optimal engine efficiency.

The RANSOTO Set of 4 O2 Oxygen Sensors (part 15717 and compatible replacements) offers a reliable, direct-fit solution for a wide range of Ford, Lincoln, Mazda, Mercury, and select Aston Martin vehicles. Designed to optimize engine performance and fuel efficiency, these sensors come with a 1-year warranty, ensuring durability and customer satisfaction.

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Brand	RANSOTO
Item dimensions L x W x H	7.87 x 3.54 x 2.36 inches
Item Weight	0.49 Kilograms
Style	Modern
Mounting Type	Flange Mount
Output Type	Push-Pull
Specific Uses For Product	Oxygen Sensor
UPC	697478910582
Manufacturer	RANSOTO
Item Weight	1.08 pounds
Product Dimensions	7.87 x 3.54 x 2.36 inches
Item model number	WWJ286
Manufacturer Part Number	WWJ286

RANSOTOSet of 4 O2 Oxygen Sensor 15717 Downstream/Upstream Compatible with Ford F150 F250 F350 Lincoln Mazda Mercury Replaces 15716 15718 11171843

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