Lambda Sensor (Oxygen Sensor)
OE Part Numbers: AJ5518861 / F32Z9F472A
AJ5518861 -- MAZDA Original Equipment
Specifications
| Specification |
Details |
| OE Part Number |
AJ5518861 (also AJ55-18-861, AJ55-18861) |
| Brand / Manufacturer |
MAZDA (Genuine Original Equipment) |
| Product Type |
Lambda Sensor (Oxygen / O₂ Sensor) |
| Sensor Type |
Heated, Finger-type Sensor, Switching-type Oxygen Sensor |
| Number of Wires / Poles |
4 |
| Cable Length |
750 mm |
| Overall Length |
390 mm (39 cm) |
| Thread Size |
M18 × 1.5 |
| Spanner / Socket Size |
22 mm (7/8″) |
| Weight |
95 g (net) / 144 g (gross) |
| Heated |
Yes |
| Fitment Type |
Vehicle Specific / Direct-Fit |
| Recommended Replacement Interval |
160,000 km (approx. 100,000 miles) |
| Quality Standard |
Manufactured to Mazda's original equipment specifications |
Technical Notes:
- This is a 4-wire heated switching-type oxygen sensor (finger-type sensor) manufactured to Mazda's original equipment standards
- The built-in heating element quickly brings the ceramic sensing tip up to operating temperature after a cold start, enabling the ECU to enter closed-loop fuel control sooner and reduce cold-start emissions
- The sensor monitors oxygen content in the exhaust gases and sends data to the engine control unit to optimize the air-fuel mixture, ensuring proper emissions performance and fuel efficiency
- As a direct-fit component, it features a vehicle-specific electrical connector and pre-terminated wiring, eliminating the need for cutting or splicing during installation
- Genuine Mazda OE parts are designed to fit your specific Mazda model perfectly and are backed by a manufacturer's warranty
Cross-Reference (OEM & Interchange Numbers)
This Lambda Sensor is a genuine Mazda Original Equipment component. The following OE numbers are directly interchangeable or closely related. Always verify physical fitment (connector shape, cable length and thread size) with your original part before purchasing.
| Type |
Part Number(s) |
| Primary OE Number |
AJ5518861, AJ55-18-861, AJ55-18861 |
| Related MAZDA OE Numbers |
AJ5118861, AJ9518861, AJD618861, AJ55188619U, BP6L18861, BP6J18861B, BP6F18861B, FS7N18861, L33618861, Z60118861A, ZM0318861A |
| FORD / LINCOLN / MERCURY |
F62Z9F472HH |
| Aftermarket Interchange |
ADM57008 |
Cross-Reference Notes:
- This OE number is part of the extensive Mazda oxygen sensor family, with AJ5118861 and AJD618861 being the most closely related references
- The number is also cross-referenced with F62Z9F472HH for Ford, Lincoln, and Mercury vehicles
- ADM57008 is a documented aftermarket equivalent
- Always physically compare your old sensor's connector shape, pin count (4), cable length (750 mm), and thread size (M18 × 1.5) before purchasing
Compatible Vehicles
This Lambda Sensor is an original equipment component primarily used in Mazda vehicles, with additional compatibility across certain Ford models.
Mazda Applications
| Model |
Year Range |
Engine / Notes |
| 626 IV (GE) |
1992 - 1997 |
1.8L, 2.0L petrol. Upstream position |
| 626 IV Hatchback (GE) |
1992 - 1997 |
1.8L, 2.0L petrol. Upstream position |
| MPV II (LW) |
2002 - 2006 |
3.0L V6 (200 HP) |
| MX-6 (GE) |
1992 - 1997 |
2.0L, 2.5L V6 petrol |
| Xedos 6 |
1992 - 1994 |
1.6L, 2.0L V6 petrol |
| Mazda 3 |
2007 - 2011 |
1.6L petrol (ZL02-18-861) |
| Mazda 6 (GG/GH) |
2002 - 2008 |
Various petrol engines |
| MX-5 (NB/NC) |
1998 - 2015 |
1.6L, 1.8L, 2.0L petrol |
Ford Applications
| Model |
Year Range |
Engine / Notes |
| Probe II |
1993 - 1998 |
2.5L V6 24V |
| Focus (DA/FFS/DS) |
2008 - 2011 |
2.0L LPG (SYDA) |
Fitment Notes:
- This sensor is used in both upstream and downstream positions depending on the specific vehicle application
- How to verify: Locate your vehicle's catalytic converter. The upstream sensor is installed before the catalytic converter; the downstream sensor is installed after the converter. Check the position of your original sensor before ordering
- Not compatible with diesel engines -- diesel applications use different sensors with different calibration parameters
- The vehicle fitment information above is a guide only. Always confirm compatibility using your vehicle's VIN or by physically inspecting your old sensor's position, connector shape, and thread size before ordering
F32Z9F472A -- FORD / MAZDA Original Equipment
Specifications
| Specification |
Details |
| OE Part Number |
F32Z9F472A (also F32Z-9F472-A) |
| Brand / Manufacturer |
FORD / FORD MOTOR COMPANY / FORD USA |
| Product Type |
Lambda Sensor (Oxygen / O₂ Sensor) |
| Number of Wires / Poles |
4-pin connector |
| Overall Length |
510 mm |
| Cable Length |
230 mm |
| Thread Size |
M18 × 1.5 |
| Diameter |
18 mm |
| Voltage |
12 V |
| Weight |
0.129 - 0.170 kg |
| Fitment Type |
Vehicle Specific / Direct-Fit |
| Recommended Replacement Interval |
160,000 km (approx. 100,000 miles) |
| Quality Standard |
Manufactured to Ford's original equipment specifications |
Technical Notes:
- This is a 4-wire heated oxygen sensor manufactured to Ford Motor Company's original equipment standards
- The built-in heating element quickly brings the ceramic sensing tip up to operating temperature after a cold start, enabling the ECU to enter closed-loop fuel control sooner and reduce cold-start emissions
- The sensor monitors oxygen content in the exhaust gases and sends data to the engine control unit to optimize the air-fuel mixture
- As a direct-fit component, it features a vehicle-specific electrical connector and pre-terminated wiring, eliminating the need for cutting or splicing during installation
- Genuine Ford OE parts are designed, engineered, and tested to rigorous Ford standards
Cross-Reference (OEM & Interchange Numbers)
This Lambda Sensor is a genuine Ford / Ford Motor Company Original Equipment component. The following OE numbers are directly interchangeable or closely related. Always verify physical fitment (connector shape, cable length and thread size) with your original part before purchasing.
| Type |
Part Number(s) |
| Primary OE Number |
F32Z9F472A, F32Z-9F472-A |
| Related FORD OE Numbers |
F32Z9F472B, F32Z9F472C, F62Z9F472BB, F62Z9F472CA, F62Z9F472HH, F1FZ9F472A, FR3Z9F472A, 3914864, 3802644 |
| MAZDA OE Numbers |
AJD618861, AJD6188619U, JE5018861, JE5018861A, JE5018861B, K80218861, KLA618861, KLA718861 |
| HYUNDAI OE Number |
3921022026 |
Cross-Reference Notes:
- This OE number is widely used across FORD, FORD MOTOR COMPANY, and FORD USA
- The number is also cross-referenced with numerous MAZDA OE numbers, indicating shared sensor technology across Ford and Mazda platforms
- HYUNDAI 3921022026 is also documented as a cross-reference
- Always physically compare your old sensor's connector shape, pin count (4), cable length (230 mm), and thread size (M18 × 1.5) before purchasing
Compatible Vehicles
This Lambda Sensor is an original equipment component primarily used in Ford vehicles, with additional compatibility across Mazda and Hyundai models.
Ford Applications
| Model |
Year Range |
Engine / Notes |
| Focus (DA/FFS/DS) |
2008 - 2011 |
2.0L LPG (SYDA). Front position |
| Probe II |
1993 - 1998 |
2.5L V6 24V |
| Mustang |
Various |
Various petrol engines |
| Explorer |
Various |
Various petrol engines |
| Ranger |
Various |
Various petrol engines |
| F-150 |
Various |
Various petrol engines |
| Escape |
Various |
Various petrol engines |
Mazda Applications
| Model |
Year Range |
Engine / Notes |
| Various Mazda models |
Various |
Petrol engines (shared platforms with Ford) |
Hyundai Applications
| Model |
Year Range |
Engine / Notes |
| Accent |
1994 - 2000 |
1.5L 16V |
Fitment Notes:
- This sensor is used in the front (upstream) position on Ford Focus 2.0L LPG models
- The sensor is compatible with both Ford and Mazda vehicles due to shared platform architecture
- How to verify: Locate your vehicle's catalytic converter. The upstream sensor is installed before the catalytic converter; the downstream sensor is installed after the converter. Check the position of your original sensor before ordering
- Not compatible with diesel engines -- diesel applications use different sensors with different calibration parameters
- The vehicle fitment information above is a guide only. Always confirm compatibility using your vehicle's VIN or by physically inspecting your old sensor's position, connector shape, and thread size before ordering