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Oil Pressure Switch Compatible With 2002-2010 Caterpillar 315C 3064/3066 Diesel 1-Pin 1/8 Npt

B266-6210A2
OEM PART NUMBERS:
• Caterpillar: 266-6210 (Primary OEM number)

SPECIFICATIONS:
• Sensor Type: Oil Pressure Switch
• Output: Switch
• Thread: 1/8 NPT
• Connector: 1-Pin
• Condition: New

APPLICATION:
• Compatible with Caterpillar 307C/308C/311C/312C (2002-2010)

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

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Description

CATERPILLAR EXCAVATORS:
• Caterpillar 307C/308C/311C/312C/315C 3064/3066 Diesel (2002-2010)


IMPORTANT:
This is an oil pressure SWITCH (on/off) — NOT a variable pressure sensor. It has a single 1-pin connector and provides a simple ground signal when oil pressure drops below 0.3-0.5 bar. Do NOT confuse with 3-pin oil pressure sensors (274-6721, 278-5273, 320-3064) that provide variable 0-5V output to the ECU for gauge reading and engine management. The switch only triggers the warning light — it does NOT feed pressure data to the ECU.

The 3064/3066 engines in Cat 307C-315C excavators are Mitsubishi-built (S4KT/S6KT). Mitsubishi part number MC840-219 cross-references to Cat 266-6210 — same switch. If you see both numbers listed for your machine, they are the same part. Failure symptoms: oil pressure warning light staying on or never illuminating. Before replacing, verify actual oil pressure with a mechanical gauge — a genuine low-pressure condition requires engine service, not just a new switch. Uses 1/8 NPT thread.
⚠️ Confirm 1-pin switch (not 3-pin sensor) matches your application.

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  • Item Requires Shipping
  • 0.4 lbs.
  • W4.0000” x H3.0000” x L6.0000”
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