R12T Fuel Water Separator Marine Assembly for Diesel & Gas Engines ā Complete Kit (10 Micron | 15 GPH | NPT ZG1/4-19)
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R12T Fuel Water Separator Marine Assembly ā Premium 10-Micron Filtration for Diesel & Gas Engines
The R12T Fuel Water Separator is engineered to provide reliable fuel-water separation for marine outboard motors, diesel tractors, generators, and compact equipment. Featuring a high-efficiency 10-micron filter media with a 15 GPH (57 LPH) flow rate, this complete assembly kit protects injectors and fuel systems from water contamination and particulate damage in humid marine and agricultural environments.
š Key Takeaways
- ā 10-Micron Filtration: Effectively separates water and captures particulates down to 10 microns, protecting injectors from premature failure.
- ā Anti-Corrosion Housing: Electrostatic powder-coated finish resists rust in saltwater, lake, and high-humidity conditions.
- ā Broad Compatibility: Directly replaces S3240, 120AT, 18-7987, and RK10222. Fits marine outboards, Kubota tractors, generators, and more.
- ā Visual Inspection Bowl: Reusable clear nylon collection bowl with self-venting drain ā check fuel quality and drain water without disassembly.
Features & Benefits
| Feature | Benefit (What It Means for You) |
|---|---|
| 10-Micron High-Efficiency Media | Captures 99.9% of water and contaminants before they reach injectors ā prevents the #1 cause of diesel injector failure. |
| Electrostatic Powder-Coated Housing | Resists rust and corrosion in saltwater marine environments ā outlasts standard uncoated steel housings. |
| Visual Inspection Clear Nylon Bowl | Monitor fuel quality at a glance. Self-venting drain valve removes separated water in seconds ā no tools needed. |
| 4-Port Design (2 In, 2 Out) | Flexible installation ā route fuel lines from either side. Unused ports seal with included plugs and Teflon tape. |
| Complete Kit with Fittings | Includes 2Ć 3/8" Barb Ć 1/4" NPT male fittings and 2Ć plugs. NPT ZG1/4-19 thread standard. |
Compatibility & Cross-Reference
| Brand | OEM / Reference Part Number |
|---|---|
| Racor | S3240, 120AT, RK10222 |
| Sierra | 18-7987 |
| Universal Fit | R12T Assembly, Marine Spin-On Housing |
Verified Applications: Mercury Marine outboards, Yanmar 2GM20 diesel engines, Kubota BX tractors, Cub Cadet equipment, pressure washers, generator sets, and auxiliary fuel tank systems.
Technical Specifications
| Filter Type | Fuel Filter Water Separator (Spin-On) |
| Micron Rating | 10 Micron (Nominal) |
| Flow Rate | 15 GPH (57 LPH) |
| Port Thread | NPT ZG1/4-19 (4 ports: 2 inlet, 2 outlet) |
| Center Thread | M18 Ć 1.5 |
| Housing Material | Electrostatic powder-coated metal housing |
| Bowl Material | Reusable clear nylon with self-venting drain |
| Dimensions | 3.19 Ć 3.19 Ć 6.5 in (81 Ć 81 Ć 165 mm) |
| Weight | 0.6 kg (1.3 lb) |
Why Choose iFJF?
As a professional filter manufacturer with a CNAS certified laboratory, we design and build our products to strictly match ā and often exceed ā OEM specifications.
- š¬ Lab-Tested Performance: Every design validated for filtration efficiency and burst pressure before production.
- š 100% Leakage Control: Factory-tested under pressure to ensure zero leakage at every port and seal.
- š° Factory-Direct Supply: Premium commercial-grade quality at manufacturer pricing ā no middleman markup.
- š¦ Bulk & Wholesale Ready: Dedicated account support for fleet operators, marinas, and distributors.
Frequently Asked Questions
Q: Is this filter compatible with gasoline engines?
A: This filter is designed for diesel applications. It can be used with gasoline in low-pressure systems (under 7 PSI), but extended gasoline exposure may affect the nylon bowl over time. For dedicated gasoline applications, we recommend periodic bowl inspection every 50 hours of operation.
Q: How often should I replace the filter element?
A: We recommend replacement every 500 hours or 10,000 miles ā whichever comes first. For severe-duty applications (saltwater marine, heavy towing, dusty agricultural work), inspect the bowl monthly and replace every 250 hours.
Q: How do I prevent leaks during installation?
A: Three critical steps: (1) Apply a thin coat of clean oil to both the top and bottom O-rings before assembly. (2) For unused ports, remove the pre-installed plugs, wrap with quality Teflon tape (6-8 wraps), and re-tighten securely. (3) Fill the filter with fuel before starting to prevent air locks. Hand-tighten only ā do not use tools on the bowl.
Q: Does this fit my Kubota tractor?
A: Yes ā this R12T assembly is a verified direct replacement for Kubota BX series tractors (including BX25D). Many Kubota owners use it to prevent the fuel gelling issues common in cold-weather diesel operation. Check your existing filter's OEM number against our compatibility table above.
Q: What's the difference between this and a Racor S3240?
A: This R12T assembly is a direct-function replacement for the Racor S3240 / 120AT series. It features the same 10-micron filtration, NPT ZG1/4-19 porting, and M18Ć1.5 center thread. Key difference: our housing uses electrostatic powder coating for superior saltwater corrosion resistance at a factory-direct price point.
What's in the Box
- 1 Ć R12T Fuel Water Separator Assembly (housing + element pre-installed)
- 1 Ć Clear Nylon Collection Bowl with self-venting drain valve
- 1 Ć Pre-installed O-ring set (top + bottom, pre-lubricated)
- 2 Ć 3/8" Barb Ć 1/4" NPT Male Fittings
- 2 Ć NPT Port Plugs
š Fast Shipping from US Warehouse Ā |Ā
š° Bulk Discounts for Fleets & Marinas Ā |Ā
š§ Technical Support: support@ifjf.net
Factory Direct Supply ā iFJF is a registered trademark. All OEM part numbers are for reference only.
