Oil Pressure Switch 11425039450 for Yanmar 4TNV98T 4TNV88 4TNV94L Takeuchi

This Oil Pressure Switch is a replacement switch compatible with Yanmar 4TNV98T, 4TNV88, and 4TNV94L engines as well as Takeuchi equipment, matching OEM Part# 114250-39450.

Product Overview

This oil pressure switch monitors engine oil pressure and signals the dashboard gauge or warning light. Designed for Yanmar industrial diesel engines and Takeuchi machinery, it ensures accurate pressure readings to prevent engine damage. The switch uses a reliable normally-closed or normally-open circuit depending on application.

Key Features & Performance

• Precision-threaded brass or steel housing for secure installation
• Rated for high-temperature engine environments
• Direct replacement for OEM part number 114250-39450
• Simple plug-and-play installation with standard electrical connector
• Tested for consistent activation at specified pressure thresholds

Fitment & Compatibility

• Yanmar 4TNV98T engine
• Yanmar 4TNV88 engine
• Yanmar 4TNV94L engine
• Takeuchi compact excavators and loaders using these engines

Common Uses

• Replacing a failed oil pressure switch on industrial diesel engines
• Restoring accurate oil pressure monitoring on construction equipment
• Used in Yanmar-powered generators, tractors, and compact machinery
• Service repair on Takeuchi skid steers and mini excavators

Technical Specifications

• Part Number(s): 114250-39450
• Thread Size: 1/8″ NPT or BSPT (verify application)
• Operating Pressure: Typically 4–7 PSI trigger point
• Connector Type: Spade terminal

Frequently Asked Questions

Q: How do I know if my oil pressure switch is faulty? A: A faulty switch may cause the oil pressure warning light to stay on, flicker, or fail to illuminate during engine startup — check with a manual pressure gauge to confirm.

Q: Will this switch work on a Yanmar 4TNV84T? A: No, it is specifically designed for 4TNV98T, 4TNV88, and 4TNV94L engines — verify your engine model before purchase.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.