Bosch 17279 Premium Upstream Air / Fuel Ratio Oxygen Sensor Bosch 17279 Upstream Oxygen Sensor
Premium Wideband 5-Wire Air / Fuel Ratio Sensor
1 Business Day Shipping 30-Day Free Returns 1-Year Warranty Direct Fit Plug & Play Core Technical Specifications Brand Bosch Manufacturer Part Number 17279 Sensor Type Wideband Air / Fuel Ratio Sensor (5-Wire Technology) Position Upstream (Pre-Catalytic Converter / Front) Connector Gender Male Connector Terminal Gender Male Pins Terminal Quantity & Type 6 Male Pins / Blade Terminals Wire Quantity 5 Wires Fitment Type Direct Replacement (Plug-and-Play) Detailed Vehicle Compatibility Make Model Year Range Engine Position Critical Production Split / Notes FORD EDGE 2012 2.0L L4 Turbocharged Upstream (Pre-Cat) Bank 1 Sensor 1 FORD EXPLORER 2012 2.0L L4 Turbocharged Upstream (Pre-Cat) Bank 1 Sensor 1 FORD F-250 SUPER DUTY 2011 6.2L V8 Upstream (Pre-Cat) To 05/02/2011 (Built Before May 2, 2011) FORD F-350 SUPER DUTY 2011 6.2L V8 Upstream (Pre-Cat) To 05/02/2011 (Built Before May 2, 2011) FORD FLEX 2010 - 2011 3.5L V6 Upstream (Pre-Cat) 2010 Models: From 07/2010 (Built July 2010 or Later) FORD TAURUS 2010 - 2012 3.5L V6 Upstream (Pre-Cat) 2010 Models: From 07/2010 (Built July 2010 or Later) LINCOLN MKS 2010 - 2011 3.5L V6 / 3.7L V6 Upstream (Pre-Cat) 2010 Models: From 06/2010 (Built June 2010 or Later) LINCOLN MKT 2010 - 2011 3.5L V6 / 3.7L V6 Upstream (Pre-Cat) 2010 Models: From 06/2010 (Built June 2010 or Later) Critical Fitment Notice ⚠️ Essential Verification Checklist Before Ordering
- Position Requirement: This sensor is specifically engineered as an UPSTREAM (Pre-Cat / Front) Air/Fuel Ratio Sensor. It will NOT fit Downstream (Post-Cat) locations.
- 6.2L V8 Super Duty Production Date Split: For 2011 Ford F-250 / F-350 6.2L V8, this sensor only fits vehicles manufactured To 05/02/2011 (Motorcraft DY1170). If built after May 2, 2011, your vehicle requires Bosch 17321 (Motorcraft DY1193).
- 3.5L / 3.7L V6 Production Date Split: For 2010 Ford Taurus, Flex, Lincoln MKS, and MKT, this sensor fits models produced From June/July 2010 and later. Models built prior require Bosch 17066 (Motorcraft DY1111).
- Emissions Compatibility: Meets and exceeds both California (CARB) and Federal (EPA) emissions standards.
- Connector & Plug Visual Inspection: Features a 5-wire harness leading to a 6-pin male plug. Please cross-check your existing harness connector before purchase.
OE Benchmark Quality
Bosch is the original inventor and world leader in automotive oxygen sensor technology. Engineered to strict OEM performance requirements, the Bosch 17279 wideband sensor provides continuous, high-speed response to your engine control unit (ECU) to maintain the exact air-fuel mixture, maximizing fuel efficiency and minimizing harmful emissions.
Direct Fit Plug & Play
- OE-Matched Connector & Harness: Comes complete with a factory-style 6-pin male connector for true plug-and-play installation without cutting, splicing, or adapting wires.
- Precision Wire Routing: Correct wire length and protective sleeving ensure hassle-free mounting using original engine wire clips.
Durability & Premium Construction
- Double Laser-Welded Stainless Steel Body: Completely sealed against ceramic oxidation, engine vibration, thermal shock, and severe exhaust environments.
- Fast-Acting Ceramic Heater: Allows the wideband sensor to reach operating temperature within seconds, reducing cold-start emissions and engine wear.
Pre-Applied Anti-Seize Compound
Sensor threads come pre-coated from the factory with specialized anti-seize compound, preventing thread galling and making future maintenance quick and effortless.
OE / OEM Part Numbers
8F9Z9F472F, 8F9Z-9F472-F, DY1170, DY-1170
Brand Cross-Reference Matrix Manufacturer / Brand Upstream (5-Wire Wideband) Cross-Reference Downstream (4-Wire Standard) Reference BOSCH 17279 16273 / 15724 / 15717 MOTORCRAFT (OE) DY-1170 / 8F9Z9F472F DY1163 / DY1056 DENSO 234-5097 234-4575 / 234-4610 / 234-4127 WALKER PRODUCTS 250-25164 250-24102 / 250-24001 NTK / NGK 24348 / 24334 22536 / 22500 DELPHI - ES20318 / ES20316 Installation Notes & Diagnostic Codes
- Installation Instructions: Ensure the exhaust pipe is fully cooled before replacement. Use a standard 22mm (7/8 in) oxygen sensor socket and torque strictly to manufacturer specs.
- Common Diagnostic Codes Fixed: Directly resolves upstream air-fuel ratio fault codes, including P0130, P0131, P0132, P0133, P0134, P0135, P0171, P0172, P0420, and P0430 when caused by a malfunctioning upstream sensor.
1-Year Warranty
Backed by a 1-Year / Unlimited Mileage Warranty against defect.
1 Workday Shipping
Fast dispatch within 1 business day directly from US warehouse.
30-Day Returns
Hassle-free 30-day return policy for uninstalled items.
Frequently Asked Questions (Q&A) Q: Can I use this sensor in a Downstream (Post-Cat) position? A: No. Bosch 17279 is a 5-wire wideband Air-Fuel Ratio Sensor designed exclusively for Upstream (Pre-Cat) applications. Downstream locations require 4-wire standard sensors such as Bosch 15724 or 16273. Q: How do I verify my vehicle\'s production date for the 2011 F-250 / F-350 6.2L V8 or 2010 Taurus/Flex? A: Check the safety compliance sticker on your driver\'s side door jamb. It lists the exact Month/Year (and often exact Date) of manufacture. You can also send us your VIN, and we will verify fitment for you. Q: Will replacing this upstream sensor clear my Check Engine Light? A: Yes, provided the issue is a faulty upstream sensor or lean/rich mixture code. After installation, perform a proper vehicle drive cycle or clear the diagnostic trouble codes with an OBD2 scanner. Need Help Confirming Compatibility?
If you are unsure whether your vehicle falls before or after a production split date, please contact us with your 17-digit VIN (Vehicle Identification Number), Model Year, and Engine Size. We will verify exact fitment within minutes!
