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NTK 24657 Air / Fuel Ratio Sensor - Upstream, Upstream Left or Upstream Right
| Brand | NTK 24657 |
|---|---|
| Position | Upstream Left |
| Mounting Bracket Included | No |
| Sensor Type | Heated |
| Thread Diameter | 18.000 |
| Thread Length | 0.38 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 20.5 |
| Product line | Direct Fit 4-Wire A/F Sensor |
| Fits | Subaru and Toyota · 21 vehicles |
Direct fit replacement. Specific-fit sensor for straightforward installation.
Heated sensor. Helps the system reach operating temperature quickly.
OE specifications. Extensively tested for quality and reliability.
Cross-references BBB Industries 13733, BBB Industries 13990 and BBB Industries 13993 for the same application. See all 28.
NTK Direct Fit A/F Sensor 24657
NTK Part Number 24657 is a direct fit, heated 4-wire air/fuel ratio sensor for specific import applications. It is built for accurate upstream fuel control feedback and OE-style fitment on select Subaru Outback, Toyota Camry, Toyota RAV4, and Toyota Solara models.
Key Features
- Direct Fit 4-Wire A/F Sensor for specific applications
- Heated sensor design for faster operating response
- 20.5 in. wiring harness length
- 18.000 mm thread diameter with 0.38 in. thread length
- Specific-fit design for OE-style replacement
- No mounting bracket included
Product Details
NTK is known for oxygen and air/fuel ratio sensor manufacturing across import and domestic coverage, and the 24657 follows that OE-focused approach. As part of the Direct Fit 4-Wire A/F Sensor line, this sensor is engineered for the correct connector, harness length, and threaded mounting dimensions needed for a clean replacement on the listed applications. The part number 24657 is a practical choice when servicing upstream air/fuel ratio sensor locations on vehicles such as the Toyota Camry, Toyota RAV4, and Subaru Outback.
This part cross-references Bosch 15217 and DENSO Auto Parts 234-9010 for the same application.
What It Helps Address
- Check engine light related to upstream air/fuel ratio sensor faults
- Incorrect fuel trim readings from a worn sensor
- Rough idle or hesitation caused by inaccurate exhaust feedback
- Failed emissions inspection tied to sensor performance
- Slow sensor response during warm-up on heated applications
Installation Notes
Fits 2001-2004 Subaru Outback, Upstream Right. Fits 2001-2004 Subaru Outback, Upstream Left. Fits 2003 Toyota Camry, Upstream. Fits 2001-2003 Toyota RAV4, Upstream. Fits 2001-2003 Toyota Solara, Upstream. Fits 2000-2002 Toyota Camry, Upstream. Fits 2000-2001 Toyota Camry, Upstream. Fits 2000 Toyota Solara, Upstream.
Confirm the connector style, thread size, and sensor location before installation. This heated 4-wire sensor uses a specific-fit layout, so matching the upstream position and emissions configuration is important for proper operation on the listed Toyota Camry, Toyota RAV4, Toyota Solara, and Subaru Outback applications.
Quality Assurance
NTK manufactures oxygen sensors with controlled ceramic production and extensive testing during manufacturing to help meet or exceed OE specifications. The brand’s OE application focus and broad sensor coverage support consistent fit, form, and function for replacement service.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2004 | Subaru | Outback | 3.0L | H6 | — | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor |
| 2004 | Subaru | Outback | 3.0L | H6 | — | Upstream Left | Compatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 4-Wire A/F Sensor |
| 2003 | Subaru | Outback | 3.0L | H6 | — | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor |
| 2003 | Subaru | Outback | 3.0L | H6 | — | Upstream Left | Compatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 4-Wire A/F Sensor |
| 2003 | Toyota | Camry | 2.4L | L4 | — | Upstream | Located in Manifold Before Warm-up (Front) Catalyst; B1S1; Federal Emissions; A/F Sensor; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor |
| 2003 | Toyota | RAV4 | 2.0L | L4 | — | Upstream | Cyls. 1 & 4; B1S1; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor |
| 2003 | Toyota | Solara | 2.4L | L4 | — | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor |
| 2002 | Subaru | Outback | 3.0L | H6 | — | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor |
| 2002 | Subaru | Outback | 3.0L | H6 | — | Upstream Left | Compatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 4-Wire A/F Sensor |
| 2002 | Toyota | Camry | 2.4L | L4 | — | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor |
| 2002 | Toyota | RAV4 | 2.0L | L4 | — | Upstream | Cyls. 1 & 4; B1S1; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor |
| 2002 | Toyota | Solara | 2.4L | L4 | — | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor |
| 2001 | Subaru | Outback | 3.0L | H6 | — | Upstream Right | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor |
| 2001 | Subaru | Outback | 3.0L | H6 | — | Upstream Left | Compatible with downstream oxygen sensor designed to meet OE specifications.; Direct Fit 4-Wire A/F Sensor |
| 2001 | Toyota | Camry | 2.2L | L4 | GAS | Upstream | B1S1; Calif. Emissions; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor |
| 2001 | Toyota | Camry | 2.2L | L4 | CNG | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor |
| 2001 | Toyota | RAV4 | 2.0L | L4 | — | Upstream | Cyls. 1 & 4; B1S1; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor |
| 2001 | Toyota | Solara | 2.2L | L4 | — | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor |
| 2000 | Toyota | Camry | 2.2L | L4 | GAS | Upstream | B1S1; Calif. Emissions; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor |
| 2000 | Toyota | Camry | 2.2L | L4 | CNG | Upstream | OE design oxygen sensor fits Bank 1 Sensor 1 for air/fuel ratio.; Direct Fit 4-Wire A/F Sensor |
| 2000 | Toyota | Solara | 2.2L | L4 | — | Upstream | B1S1; Calif. Emissions; OE Equivalent Design; Direct Fit 4-Wire A/F Sensor |
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