Fuel Injector AR39811 — Single Unit for John Deere 3010, 3020, 4000, 4010, 4020, 4040, 4230 & More

Just one cylinder giving you trouble? This brand-new aftermarket fuel injector covers 4 OEM cross-reference numbers and fits over a dozen classic John Deere agricultural and industrial models. Whether you're doing a targeted repair or keeping a restoration on budget, this is the precise, direct-fit replacement your engine needs — no modifications, no guesswork.

✅ Fitment

• Make: John Deere
• Compatible Models: 3010, 3020, 4000, 4010, 4020, 4040, 4230, 500, 500C, 510, 600, 660
• Part Numbers (cross-ref): AR39811 / AR46846 / AR50781 / SE501163
• Quantity: 1 injector
• Fit Type: Direct OEM replacement — no modifications required

🔧 What's Included

• 1 × Fuel Injector (cross-ref: AR39811 / AR46846 / AR50781 / SE501163)
• 100% new aftermarket component
• Ready to install out of the box

⚙️ Why This Injector?

• 4 OEM cross-references covered — confident fitment across John Deere 3000 and 4000 series
• Precise fuel atomization — restores combustion efficiency and engine power to original spec
• Eliminates rough idle, misfires & black smoke — gets your tractor running cleanly again
• Cost-effective single replacement — fix the one that failed without replacing the whole set
• Ideal for restorations & targeted repairs — trusted by farmers, mechanics, and equipment dealers
• Agricultural & industrial grade — built to handle field conditions and heavy-duty use cycles

📦 Condition

Brand new aftermarket. Inspected and packaged for safe delivery.

Need to replace all 6 injectors? We carry the complete 6-piece kit at better value. Cross-reference your part number (AR39811, AR46846, AR50781, or SE501163) and confirm your model before ordering. Fitment questions? Contact us — we'll get you the right part.