CRITICAL LEAK-PROOF INSTALLATION GUIDE: To ensure a perfect seal and prevent fuel leakage, you MUST apply oil to lubricate the O-rings (between base, tank, and bowl) before installation. This product features a 4-port design (2 inputs, 2 outputs); for the unused ports, remove the pre-installed plugs, wrap them with Teflon tape, and re-tighten securely. Proper lubrication and thread sealing are the keys to a leak-free system.
10 MICRON FILTRATION EFFICIENCY: Designed for high-performance diesel engines, this R12T separator delivers a flow rate of 15 GPH (57 LPH). The advanced filter media captures particles as small as 10 microns and effectively separates water from fuel. This protection is vital for maintaining fuel injector health and preventing engine failure in humid marine or agricultural environments.
CORROSION-RESISTANT COATING & BOWL: The filter housing is finished with a durable electrostatic powder coating to resist rust in harsh ocean or lake conditions. It includes a reusable clear nylon collection bowl that allows for visual fuel inspection. The self-venting drain lets you easily remove separated water—simply loosen to drain and tighten securely to seal.
VERSATILE MOUNTING SCENARIOS: Engineered for compact spaces, this assembly is ideal For outboard motors, For tractors, and For oil storage tanks. Installation Tip: If you cannot drill holes directly into your boat's hull, we recommend mounting the filter on a wooden plate (min. 1cm thick) using screws, then adhering the plate to the boat surface with marine-grade structural glue.
ESSENTIAL START-UP PROTOCOL: To prevent air locks or dashboard errors, fill the filter with fuel BEFORE starting the engine. This spin-on assembly is compatible with/For standard replacement filters (Replacement For S3240, 120AT, 18-7987, RK10222). Ensure your fuel line fittings match the NPT ZG1/4-19 thread specification before connecting.
Package includes: 1* R12T Fuel Water Separator Filter.
Specifications
Replacement Part Number: Replacement For S3240 R12T 120AT; Replacement For 18-7987; Replacement For RK10222
Maximum Flow Rate: 15 GPH (57 LPH)
Filter Rating: 10 Micron.
Inlet/outlet thread size: ZG1/4-19
Base Connection for Filter Port / Thread Size: M18 x 1.5
Installation instruction:
1.Nylon collection bowl down when installed the water separator and filter.Lube the O-rings of filter.
2.There are 4 ports,two inputs and two outputs. We provide two plugs for the extra two ports. If you need to use two plugs, you must install them to the filter and tighten them.
3.Before installed the filter, you have to remove those plugs, teflon-tape them, and re-install them.Prevent leaks from these plugs.
4.All of the above steps are very easy to operate, you'd better use the tool to install tighten.