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Genuine Thermo King Yanmar Engine Fuel Stop Shut-Off Solenoid, 40-1900 (401900)


Sale price $122.49 Regular price $174.99
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Description

The Genuine Thermo King Yanmar Engine Fuel Stop Shut-Off Solenoid (Part Number: 40-1900 / 401900) is an essential heavy-duty engine control component engineered for transport refrigeration units and auxiliary power systems. Tasked with regulating primary fuel lines, this 12-volt electronic solenoid acts as an automated safety boundary—instantly opening to allow diesel delivery during start-up cycles and cutting it entirely to stop the engine or clear critical fault alerts. Constructed from an ultra-durable metal alloy housing with a high-insulation internal coil matrix, this authentic Thermo King component is specifically built to survive severe vibration profiles, temperature shocks, and chemical contact with fuels. Swapping out a dragging or shorted solenoid resolves typical reefer engine symptoms such as sudden engine stalling, failure to start, or persistent control board fuel circuit errors. [1]
⭐ Key Features & Benefits
  • Genuine Thermo King OEM Part: Guarantees precise mechanical plunger depth and electrical resistance mapping.
  • Instant Fuel Cut-Off Safety: Rapid-response coil instantly interrupts fuel delivery to halt diesel operation under emergency failure loops.
  • Extreme Vibration Construction: Solid metal sealing sleeve shields internal windings from transport shock wear.
  • Direct-Fit Plug Interface: Features a factory-matched wire harness layout to skip risky aftermarket slicing steps.
  • Prevents Costly Reefer Shutdowns: Restores reliable engine run cycles to guard sensitive cold-chain cargo from spoil hazards. [1, 2]
🔧 Uses / Applications
  • Thermo King TriPac APU Systems: Essential replacement hardware used to control fuel shutdown lines inside TriPac and TriPac Evolution APU units. [1, 2]
  • Trailer Refrigeration Maintenance: Applied across major transport trailer reefers, including Thermo King SB, SL, SLX, TS, and Precedent series lines. [1, 2]
  • Yanmar Diesel Overhauls: Direct-fit engine core solenoid for Yanmar 2.49, 3.74, 3.88, 3.95, 4.82, and 4.86 diesel engine tiers. [1, 2]
  • High-Margin Liquidator Sourcing: Highly practical, compact mechanical part ideal for fleet trucking networks, heavy-duty commercial parts counters, and trailer servicing stations.
📊 Technical Specifications
Specification Detail
Manufacturer Thermo King / Yanmar
Part Number 40-1900 / 401900 / 42-0100
Component Type Fuel Shut-Off / Stop Control Solenoid
Operating Voltage 12V DC
Housing Material Corrosion-Resistant Carbon Steel Base
Engine Line Fitment Yanmar 2.49 / 3.74 / 3.88 / 3.95 / 4.82 / 4.86 Series
Interface Connections Integrated Wire Lead Harness
Condition Brand New
🔄 Cross‑Reference / Interchange Table
Manufacturer Line / Tier Equivalent Model Number
Thermo King (OEM Baseline) 40-1900 / 401900
Thermo King (Interchange Codes) 42-0100 / 42-100 / 420100 / 42100
Thermo King (Legacy Codes) 41-9100 / 41-6383
Yanmar (Factory Number) 401900 OEM
Installation Warning: Clean Seating Mandatory: Always inspect the mounting bore face for legacy sealant scale before setting the new solenoid plunger. Use an accurate torque wrench to tighten hardware evenly and protect the engine block casing from thread stripping.

Disclosure Policy

This product was acquired by Freeman Liquidators from a sale of merchandise subject to a commercial insurance loss. Freeman Liquidators is a secondary seller of products, is not affiliated with or sponsored by the manufacturer of the products and is not a manufacturer authorized seller of the products. Sale of this product by Freeman Liquidators is not subject to the policies of the manufacturer. Any warranty offered by the manufacturer is not available to you as the purchaser.

All products are NEVER USED but external packaging will have damage. Some items may be placed into other packaging to ensure safe shipping. All items are opened for inspection prior to shipment to ensure the best quality of products. Freeman Liquidators guarantees your satisfaction. If you are not completely satisfied with a purchased product, within 30 days from the date of purchase, return the product in its packaging and Freeman Liquidators will fully refund your money.

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Genuine Thermo King Yanmar Engine Fuel Stop Shut-Off Solenoid, 40-1900 (401900)

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