Butom 394018S Maintenance Kit: Air, Oil, Fuel Filters + Spark Plugs for BS/JD Engines (GT235)

All-In-One Maintenance Kit for BS and JD Engines

Upgrade your mower or compact tractor with the Butom 394018S Maintenance Kit. Built for compatibility with BS and JD engine families, this curated set brings together essential filtration components and spark plugs in a single, ready-to-install package. Instead of sourcing parts separately, you gain a cohesive kit designed to work together, helping you save time and keep your machine running smoothly through seasons of use.

In real-world terms, you’ll notice a straightforward installation that supports cleaner air intake, steadier fuel delivery, and reliable ignition. The kit is designed to fit a range of models and horsepower classes, so you can approach routine maintenance with confidence rather than guesswork. The included parts are selected to complement one another, reducing the chance of mismatches and enabling a more seamless service experience.

What’s Included

• Air filter 394018S
• Pre-filter
• Oil filter 492932S
• Fuel filter 493629
• Spark plugs x2

The all-in-one nature of the kit is designed to help you complete a tune-up efficiently, whether you’re preparing for peak season, a mid-season refresh, or routine maintenance. Each component is chosen for compatibility with the listed engines and fitments, so you can proceed with installation with a clear sense of purpose.

Key Features and Benefits

• All-In-One Kit: Save time and money by replacing multiple parts in one purchase.
• High Filtration Capacity: The air filter uses a robust pleated design to balance airflow with dust capture, helping reduce intake resistance while maintaining filtration quality.
• Potential Performance Uplift: Replacing the air filter can help restore unblocked airflow, supporting smoother operation and responsive throttle feel.
• Pliable PU Seal: The seal material aims for a tight, leak-free fit when installed correctly, with reduced vibration noise for a quieter run.
• Specified Dimensions: Outside diameter 7-1/8 in, inside diameter 5-1/2 in, overall height 2-1/4 in (excluding pre-filter). Precision sizing helps with proper seating.

What to Expect When You Use It

Designed for practical, real-world use, this kit supports routine maintenance on tractors and lawn machines in the 12.5 to 20 horsepower range and related Vanguard L-Head platforms. The components are selected to align with common JD and BS fitments, offering a balanced approach to keeping filtration, combustion, and lubrication paths clear. While results can vary with engine condition and operating environment, many users report smoother starts, steadier idle, and improved maintenance efficiency after a full tune-up with this kit.

Packaging and Fit

Included parts come neatly organized to simplify the service process, with clear labeling to help you confirm compatibility before installation. Proper seating and a clean mounting surface are recommended to maximize the seal’s effectiveness and minimize vibration during operation.