Engine Won't Start — Or Won't Shut Off? Fix It Fast with the Right Solenoid.

A failed fuel shutoff solenoid on your Isuzu-powered forklift or excavator creates an immediate, unignorable problem: the machine either won't start at all, or it won't stop when you turn the key. Both failures take equipment off the floor or off the job site instantly. The Fuel Shutoff Solenoid 1819100520 is the direct-fit replacement for Isuzu 4JG1, 4JG2, and 6BG1 engines — available in 12V and 24V, and in New Aftermarket or Genuine Original condition. Select the variant that matches your machine's electrical system and your budget.

✅ Confirmed Engine Fitment

• Isuzu 4JG1 — compact diesel (forklifts, compact equipment)
• Isuzu 4JG2 — compact diesel (forklifts, compact equipment)
• Isuzu 6BG1 — medium diesel (excavators, commercial trucks)

Not sure which voltage fits your machine? Check your equipment's electrical system spec or contact us — we'll confirm before you order.

🔧 Cross-Reference Part Numbers

• 1819100520 (Isuzu OEM reference)
• 1-81910-0520 (alternate format)
• MV2-17A (cross-reference)

⚙️ Why This Solenoid Restores Control

• Positive fail-safe fuel cutoff — electromagnetic shutdown cuts fuel flow completely on command or power loss; no partial shutdowns, no runaway engine risk
• Resolves both failure modes — stuck-closed (won't start) and stuck-open (won't stop) — the two most common solenoid failures on Isuzu diesel equipment
• 12V & 24V available — select the correct voltage for your machine's electrical system (12V for most forklifts; 24V for heavy equipment and trucks)
• Triple OEM cross-reference — covers 1819100520, 1-81910-0520, and MV2-17A for confirmed fitment regardless of how your parts catalog lists it
• Direct OEM-spec fitment — bolt-on replacement, no modifications or adapters required

📦 Variant Options

• New Aftermarket — 100% new, not rebuilt or reconditioned; full service life at aftermarket pricing
• Genuine Original — OEM Isuzu unit for applications requiring factory-spec components

🔑 Key Specs

• Part Numbers: 1819100520, 1-81910-0520, MV2-17A
• Voltage: 12V / 24V (select variant)
• Condition: New Aftermarket / Genuine Original (select variant)
• Product Type: Fuel Shutoff Solenoid
• Fits: Isuzu 4JG1, 4JG2, 6BG1 diesel engines
• Applications: Forklifts, Compact Equipment, Excavators, Commercial Trucks

Every minute of downtime on a forklift or excavator has a direct cost. Select your voltage and condition, order today — in stock and ready to ship.