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Temperature Sensor 13640-32G20 – Fits Suzuki DF25A/DF30A 25–30HP
- $69.77
- $69.77
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How to Match This Part
This aftermarket engine temperature sensor replaces Suzuki Marine 13640-32G20 (also catalogued as 13640-32G20-000). It screws into the powerhead, monitors cylinder temperature for the cooling / overheat-warning circuit, and feeds the engine control system on the Suzuki four-stroke outboards listed below.
Match this part in this order:
1. Number on the sensor you remove — 13640-32G20, 13640-32G20-000, or a superseded predecessor 13640-32G00 / 13640-32G01
2. Engine model — DF25A or DF30A family at 25HP or 30HP against the compatibility table
3. Probe, lead, and connector shape — compare the product images to your original sensor
Identify the sensor by form as well as by number. The assembly has a threaded brass-toned sensing probe with hex flats for a wrench, a black braided protective lead, and a rectangular molded 2-pin electrical connector with a lock tab. If your original sensor looks different or carries an unrelated Suzuki number, do not use this part even if the horsepower overlaps.
Part Number Cross-Reference
Use these verified Suzuki catalog numbers to confirm you have the correct engine temperature sensor. Brand names and OEM numbers are for identification only.
| Type | Brand | Part Number | Notes |
|---|---|---|---|
| OEM | Suzuki Marine | 13640-32G20 | Primary SENSOR, ENGINE TEMP listing number |
| OEM | Suzuki Marine | 13640-32G20-000 | Catalog form with -000 suffix (same assembly) |
| OEM | Suzuki Marine | 13640-32G00 | Superseded predecessor (→ 13640-32G01 → 13640-32G20) |
| OEM | Suzuki Marine | 13640-32G01 | Superseded predecessor (replaced by 13640-32G20) |
This is an aftermarket part manufactured by JLM Marine. It is not sold as a genuine Suzuki Marine component.
Compatible Engine Models
Confirm your engine model and the number on the removed sensor before ordering. For Suzuki owners: Suzuki Outboard Parts Diagrams & Catalog.
| Engine Model | HP | Stroke | Notes |
|---|---|---|---|
| DF25A, DF25AR, DF25AT, DF25ATH | 25 | 4-Stroke | Confirm 13640-32G20 (or superseded 13640-32G00 / 13640-32G01) on the removed sensor |
| DF30A, DF30AQ, DF30AR, DF30AT, DF30ATH | 30 | 4-Stroke | Confirm 13640-32G20 (or superseded 13640-32G00 / 13640-32G01) on the removed sensor |
Horsepower alone is not enough — always match the OEM number and the probe / connector form shown in the product images.
Technical Specifications
| Specification | Value |
|---|---|
| Part type | Engine temperature sensor assembly |
| Primary OEM number replaced | 13640-32G20 |
| Also covers superseded numbers | 13640-32G00, 13640-32G01 |
| Engine brand | Suzuki Marine outboard |
| Rated output range | 25HP and 30HP |
| Physical configuration | Threaded sensing probe with hex flats, protected lead, molded 2-pin connector |
| Sensing role | Cylinder / engine temperature monitoring for overheat caution input |
| Condition | New unit (not remanufactured) |
Installation Guide
- 1Switch the ignition off, disconnect the negative battery cable, and allow the powerhead to cool completely before touching any cooling-system fittings.
- 2Locate the engine temperature sensor on the powerhead using your Suzuki parts diagram, release the connector lock, and unplug the harness without pulling on the wires.
- 3Use the correct wrench on the hex flats to unscrew the original sensor. Catch any coolant that escapes and keep the sensor bore clean.
- 4Compare the removed part number, probe profile, lead routing, and 2-pin connector with the replacement. Do not install if any feature differs.
- 5Start the new sensor by hand to prevent cross-threading, then tighten it only to the torque given in the applicable Suzuki service manual for your model.
- 6Reconnect the plug until the latch clicks, reconnect the battery, top up coolant if required, start the engine, and verify normal warning-system operation with no leakage at the sensor.
Note: Professional installation is recommended for engine temperature sensors on EFI four-stroke outboards.
Troubleshooting & FAQ
Important Notes
- Verify that the product images and the number on your original sensor match 13640-32G20 / 13640-32G00 / 13640-32G01, including the threaded probe, protected lead, and 2-pin connector. If anything differs, do not proceed even if your horsepower overlaps.
- This listing covers Suzuki DF25A and DF30A family applications at 25HP and 30HP that use this SENSOR, ENGINE TEMP. Confirm fitment against your engine’s parts diagram when serial-specific diagrams are available.
- This is an aftermarket replacement and is not a genuine Suzuki Marine OEM component.
- Do not invent generic torque values. Follow the service specification for your exact Suzuki model.
- Professional installation is recommended for engine temperature sensors on EFI four-stroke outboards.
Why Choose JLM MARINE?
- Precision Fit: Cross-referenced to Suzuki 13640-32G20 for the DF25A and DF30A applications listed above.
- Quality Control: Each batch is inspected for dimensional consistency and workmanship.
- Direct from Manufacturer: Aftermarket marine engine temperature sensors engineered for reliable cooling-system feedback on Suzuki four-stroke outboards.
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