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T-MAP Sensor 0261230283 – Bosch 2.5 Bar 4-Pin Replacement
- $45.77
- $45.77
- Unit price
- per
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How to Match This Part
This aftermarket combined manifold absolute pressure and intake-air temperature (T-MAP) sensor replaces Bosch 0261230283 and the related Fiat / Iveco OE number 504064370. It measures intake manifold absolute pressure and air temperature for fuel and boost control.
Match this part in this order:
1. Original part number stamped on the sensor or listed in your parts catalog — 0261230283, 0261230042, or 504064370
2. Connector — compact 4-pin plug with locking tab (numeral “4” may be molded on the housing)
3. Probe form — cylindrical sensing tip with a bright green O-ring seal and slotted protective cage
Compare the product images to your original sensor before ordering. This is not a MerCruiser / Mercury Marine MAP family (for example 864856A1 or 8M0087834) — do not order this listing if your OEM number belongs to a different sensor design.
Part Number Cross-Reference
Use this table to confirm equivalent OEM numbers for the same T-MAP sensor application.
| Type | Brand | Part Number | Notes |
|---|---|---|---|
| OEM | Bosch | 0261230283 | Primary listing number (0 261 230 283) |
| OEM | Bosch | 0261230042 | Former number; superseded by 0261230283 |
| OEM | Fiat / Iveco | 504064370 | Vehicle OE cross for the same sensor |
This is an aftermarket part manufactured by JLM Marine and is not sold as a genuine Bosch or Fiat / Iveco component.
Technical Specifications
| Specification | Value |
|---|---|
| Part type | Combined MAP + intake-air temperature (T-MAP) sensor |
| Primary OEM number | 0261230283 |
| Pressure range | 0.2 – 2.5 bar (20 – 250 kPa) |
| Temperature range | −40 °C to 130 °C |
| Connector | Compact 4-pin with locking tab |
| Seal / probe | Green O-ring on probe; slotted protective cage |
| Body | Black molded plastic, L-shaped plug-in form |
Installation Guide
1
Stop the engine and disconnect the battery negative terminal before working on intake sensors.
2
Locate the T-MAP sensor on the intake manifold or charge-air duct. Release the 4-pin connector lock and unplug the harness.
3
Remove the mounting fastener (if used) and pull the sensor straight out of the port. Inspect the bore for debris and replace any damaged port seal surface.
4
Lightly lubricate the green O-ring with clean engine oil (avoid silicone grease unless your service procedure specifies it), seat the new sensor fully, and secure the mount.
5
Reconnect the 4-pin plug until it clicks, reconnect the battery, and clear any related diagnostic codes after confirming a pressure-tight install.
Warning: A poor O-ring seal or mismatched connector can cause boost/MAP faults, rough idle, or limp mode. Confirm the OE number and probe shape against the product images before start-up.
Troubleshooting & FAQ
How do I confirm this fits my engine?
Match the number stamped on your original sensor to 0261230283, 0261230042, or 504064370, then compare the 4-pin connector and green O-ring probe to the product images. Do not rely on engine model alone.
Is this the same as MerCruiser 864856A1?
No. MerCruiser / Mercury MAP numbers such as 864856A1 and 8M0087834 are different sensor families. This listing is for the Bosch 0261230283 T-MAP form only.
Is this an OEM or aftermarket part?
This is an aftermarket replacement manufactured by JLM Marine to match the form and electrical role of Bosch 0261230283. It is not a genuine Bosch or Fiat / Iveco part.
Why Choose JLM MARINE?
- Precision Fit: T-MAP sensor matched to Bosch 0261230283 / Fiat-Iveco 504064370 form and connector.
- Quality Control: Each batch is inspected for dimensional consistency and workmanship.
- Direct from Manufacturer: New-production aftermarket sensors engineered for manifold pressure and intake-air temperature sensing.
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