Air / Fuel Ratio Sensor for 2006-2011 Mazda 3 & More - DENSO 234-5040

$195.99
DENSO Auto Parts Air / Fuel Ratio Sensor 234-5040
DENSO Auto Parts Air / Fuel Ratio Sensor 234-5040

Vehicles this part fits
    Part number: 234-5040
    UPC: 042511118409
    Condition: New
    Weight: 0.40 LBS
    Item Package Quantity: 1
    $195.99
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    DENSO Auto Parts Air / Fuel Ratio Sensor P/N:234-5040
    DENSO Auto Parts Air / Fuel Ratio Sensor P/N:234-5040
    $195.99
    $195.99

    DENSO Auto Parts 234-5040 air / fuel ratio sensor for the 2006-2009 Mazda 3 4-cylinder 2.3L, the 2006-2011 3 4-cylinder 2.0L and other vehicles measures the air-fuel ratio in the exhaust and reports it to the engine computer. This new, direct-fit sensor sits in the upstream position.

    • Laser-welded stainless housing that resists corrosion
    • PTFE filter that blocks contaminants under harsh engine conditions
    • Dual-layer protection around the ceramic element for fast, reliable response times
    • Wide-band sensor with a heated element and 5 wires

    Quick facts

    • Part: DENSO Auto Parts 234-5040 air / fuel ratio sensor
    • Fits: 2006-2009 Mazda 3 4-cylinder 2.3L, the 2006-2011 3 4-cylinder 2.0L and other vehicles
    • Position: Upstream
    • Condition: New

    A worn air / fuel ratio sensor can show up as a check engine light, poorer fuel economy or a rough idle. An exhaust leak, a vacuum leak or a misfiring spark plug can be behind those signs too, so track down the cause before you buy a replacement.

    Fits

    This sensor is a direct-fit replacement for the cars named above and also for the 2009-2010 Mazda 3 Sport 4-cylinder 2.0L and the 2008-2010 Mazda 5 4-cylinder 2.3L.

    Specifications

    Fit and size

    • Position: Upstream
    • Quantity per vehicle: 1
    • Wire quantity: 5
    • Wiring harness length: 19.49 in
    • Thread diameter: 0.711 in

    Build and materials

    • Sensor type: Wide-band, heated
    • Housing: Laser-welded stainless
    • Connector gender: Male
    • Grade: Standard Replacement
    • Condition: New
    • Country of origin: Japan

    In the box

    This listing holds one air / fuel ratio sensor, and the engine takes one.

    This part cross-references / interchanges with the following part numbers:

    15788, 18053, LF3T188G1, LF8R188G1, LF8R188G1A, LFL7188G1B, LFL7188G1C, 24355, 24391, 250-25029, 350-35026

    Frequently Asked Questions

    Is this an air fuel ratio sensor for the 2006-2009 Mazda 3 4-cylinder 2.3L?

    Yes. DENSO Auto Parts 234-5040 fits the 2006-2009 Mazda 3 4-cylinder 2.3L and the 2006-2011 Mazda 3 4-cylinder 2.0L.

    Is this DENSO Auto Parts air fuel ratio sensor a wide-band type?

    Yes. DENSO Auto Parts 234-5040 is a wide-band sensor with a heated element and five wires, installed in the upstream position.

    How long is the wiring harness on this sensor?

    The harness is 19.49 inches long with five wires and a male connector. The thread diameter is 0.711 inch.

    What protects the ceramic element in this air / fuel ratio sensor?

    Dual-layer protection shields the ceramic element, and a PTFE filter blocks contaminants. The housing is laser-welded stainless.

    What signs can mean a wide-band air / fuel ratio sensor is wearing out?

    A check engine light, worse fuel economy or a rough idle can be signs. A shop can test the sensor, since that check needs the engine running.

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