BARTOO R12T Marine Fuel Water Separator 10-Micron Spin-On Filter with Clear Bowl — Fits 3/8-inch NPT, Replaces S3240

The BARTOO R12T is a 10-micron spin-on fuel water separator that removes water and contaminants from marine fuel to protect outboard engines and related equipment.

Keeping water and particles out of your fuel system is essential for reliable engine performance. The BARTOO R12T marine fuel water separator is engineered as a direct-replacement-style spin-on element compatible with common Racor/Parker S3240-type housings, offering a 10-micron filtration rating and a reusable clear nylon bowl for visual inspection. Designed for boats, generators, and light industrial equipment, this unit balances flow rate and contamination capture to help maintain smooth running and reduce injector and pump wear.

How does the R12T remove water and dirt from fuel?

The R12T combines a fine 10-micron element with a spin-on separator design and a transparent collection bowl. As fuel passes through the element, particulates are trapped while water coalesces and drops into the bowl where it can be drained without disassembling the filter head.

• 10-micron filtration captures small particles that harm injectors and pumps
• Water-separating media causes moisture to collect in the bowl
• Transparent nylon bowl provides visual confirmation of contamination level
• Reusable bowl design allows easy draining and inspection

Will the R12T fit my outboard or generator fuel line?

This BARTOO element is built to match common R12T style dimensions and thread sizes, intended for systems using 3/8-inch NPT outlet connections and compatible heads. Check your current housing’s thread and port specifications to confirm fitment before ordering.

• Thread: NPT / ZG1/4-19 with M18 x 1.5 center thread compatibility
• Outlet compatibility: fits 3/8-inch NPT outboard motor connections
• Cross-references: replaces Racor/Parker S3240, R12T, S3213, S3227, 802893T
• Suitable for boats, trucks, generators and construction equipment

How do I change or service the R12T spin-on unit?

Service is straightforward thanks to the spin-on configuration: unscrew the old element, inspect and clean the reusable bowl, replace the gasket and O-ring provided, then screw on the new cartridge until snug. Always follow your engine or equipment manufacturer’s safety and priming instructions when replacing fuel filters.

• Includes replacement gasket and O-ring to prevent leaks at the mounting head
• Spin-on design reduces downtime and tool needs for routine changes
• Transparent bowl simplifies deciding when to replace the element
• Recommended inspection during regular maintenance intervals or if fuel quality is uncertain

What performance can I expect from a 10-micron R12T unit?

With a 10-micron rating and an R12T flow profile, this separator balances particle capture with adequate flow for small-to-medium displacement outboards and auxiliary engines. While exact service life depends on fuel quality and usage, the unit helps reduce injector clogging and fuel pump wear when replaced on schedule.

• Rated flow: approximately 30 GPH on the R12T model
• Designed for high-performance applications where finer filtration is needed
• Helps maintain consistent engine operation by reducing contaminants
• Not a substitute for following manufacturer-recommended maintenance intervals

Who is this for: The BARTOO R12T 10-micron fuel water separator is aimed at boat owners, mariners, small-engine mechanics, and equipment operators who need a reliable spin-on replacement element compatible with Racor-style housings. It’s well suited to anyone maintaining outboard motors, generators, agricultural machinery, or light industrial equipment who wants clearer fuel inspection, improved contaminant protection, and an easy-install service routine.