Top-Selling John Deere Parts You Should Keep In-Stock on the Farm

A well-maintained machine is built to last throughout the toughest seasons, making it a necessity for hard-working farmers to keep spare parts on hand. While you don’t need to stock every part that makes up your tractor, there are a few essentials that can help you avoid expensive repairs and keep your operation moving. Here are the top-selling John Deere parts every farmer should keep in their toolshed.

Filters 

Filters are key protectors of your engine and fuel system, keeping key components clean and free of contaminants to keep your equipment running smoothly. Having spares on hand means you can replace them quickly and prevent long-term damage.

• Air Filters: Keep dust and debris out of your engine. A clogged air filter can seriously reduce fuel efficiency and engine power. Many John Deere tractors have contamination indicators, so it’s crucial you don’t ignore them.
• Oil Filters: Protect your engine oil from contaminants. Replace every 100–250 hours, and more often during harvest season when equipment runs daily.
• Fuel Filters: A clogged fuel filter can cause hard starts or stalling. Swapping in a new filter is a quick, inexpensive fix that restores performance.

Belts and Hoses

Your belts play a vital role in transferring power to critical components of your equipment, like your alternator, fan systems, and pumps, while hoses ensure proper fluid delivery. Over time, they can become worn with cracks or leaks, leading to unexpected downtime. Inspect belts and hoses every 50–100 hours of operation. Having extras on hand can save you from downtime during peak seasons. 

Stock up on:

• Fan belts
• Alternator drive belts
• Pump or auger drive belts
• Deck drive or mower belts
• Clutch drive belts
• Hydraulic hoses

Oil, Fuel, and Fluids

Routine fluid checks and replacements are non-negotiable when it comes to farm equipment maintenance. Low or contaminated fluids can damage your engine, transmission, or hydraulics. Keeping John Deere fluids in stock ensures your machines are always ready for the field.

Popular options include:

• Plus-50™ II Premium Engine Oil: Designed for year-long use, supports extended service intervals of up to 500 hours.
• Hy-Gard™: Multi-use oil for transmissions, hydraulics, wet brakes, and clutches, ensures smooth operation under high pressure.
• Cool-Gard™ II: Offers protection against freezing, boiling, corrosion, and cavitation. Six-year service life.
• Fuel-Protect™ Diesel Fuel Conditioner: Keeps fuel systems clean by preventing oxidation and deposits and lowering emissions.

Zerk Fittings

Greasing your tractor should be a daily practice — one you don’t want to skip out on. Damaged or missing zerk fittings can allow contaminants into internal components, causing bigger problems down the line. Keeping a supply of fittings on the farm makes it easy to stay on top of lubrication.

Electrical Components

Electrical parts like fuses and bulbs are small but just as essential. Bulbs can save you from being left in the dark, and fuses safeguard electrical components, preventing overload and potential fires. 

Common John Deere electrical parts to keep in stock include:

• OEM Light Bulb R136239: A 12.8 V, 50 W halogen bulb used across many compact and utility tractor models.
  
  
• AT471932 Fuse Kit: Helps safeguard electrical components from overload and potential fire hazards.
  
  

You can’t always predict when your machine will need a quick emergency repair, but you can stay prepared by keeping these parts in stock at all times. Filters, belts, hoses, fluids, grease fittings, and electrical components are affordable essentials that save time and money in the long run.

If you’re a farmer in Ohio or Indiana, you can count on Koenig Equipment as your trusted John Deere dealer. From genuine OEM parts to expert service, we’ll help you keep your equipment running strong all year long.