R12T FUEL FILTER BASE NPT ZG1/4-19 FOR 120AT S3240 DIESEL | IFJF

iFJF part No.: FJ-R12T-DZ. R12T Fuel Filter Base NPT ZG1/4-19 Threaded Head for 120AT / S3240 Product Overview The iFJF R12T Fuel Filter Base is a precision-machined aluminum filter head designed as a direct replacement for Racor 120AT and S3240 series fuel water separator assemblies. Featuring standard NPT ZG1/4-19 threaded inlet and outlet ports, this base accepts all 120AT-style spin-on filter elements. The kit includes two brass NPT fittings and two port plugs, giving you flexibility to configure the plumbing for your specific installation layout. Whether replacing a corroded original filter head on your marine diesel setup or building a custom fuel filtration system, the R12T base provides a solid, leak-free foundation. The anodized aluminum construction resists corrosion from diesel fuel, biodiesel blends, and saltwater marine environments. Key Features Anodized Aluminum Construction: Premium 6061 aluminum with anodized finish resists corrosion and pitting far more durable than raw cast alternatives. Standard NPT ZG1/4-19 Ports: Matches the most common marine and industrial diesel fuel line fittings without adapters. Includes Fittings & Plugs: Two brass NPT adapters plus two port plugs for flexible plumbing configuration. Universal 120AT Compatibility: Accepts all standard 120AT and S3240 spin-on filter elements from any manufacturer. Pre-Drilled Mounting Holes: Easy bolt-on installation to bulkheads, stringers, or custom mounting brackets. Compatibility Filter Series Element Type Micron Options Racor 120AT Spin-On 2, 10, 30 Micron Racor S3240 Spin-On 10 Micron iFJF R12T Spin-On 10 Micron Sierra 18-7947 Spin-On 10 Micron Specifications Specification Value Port Thread NPT ZG1/4-19 (Inlet & Outlet) Material Anodized 6061 Aluminum Compatible Elements 120AT, S3240, R12T, Sierra 18-7947 Kit Includes Filter Base + 2 Brass Fittings + 2 Plugs Max Operating Pressure 15 PSI (Suction Side Application) Frequently Asked Questions Q: Does this base come with a filter element? A: No, this is the filter head/base only. It accepts all standard 120AT and S3240 spin-on filter elements, available separately. Q: What thread are the ports? A: Standard NPT ZG1/4-19 the industry-standard size for marine and industrial diesel fuel filtration systems. Q: Can I mount this on a boat? A: Yes. The anodized aluminum is corrosion-resistant and suitable for marine engine compartments when mounted in a dry, ventilated area. Q: Does it fit the Racor drain bowl? A: Yes. The R12T base accepts the standard Racor-style clear nylon water collection bowl (sold separately or as part of our combo kit). Q: What's the difference between this and the combo kit? A: This is the filter head/base only. Our combo kit (sold separately) includes the head, element, bowl, and all fittings for a complete drop-in installation. Related Products & Guides Complete Your Setup: R12T Combo Kit ($29.99) Complete kit with element + bowl + fittings R12T Economy Combo ($22.99) Budget complete kit R12T Replacement Filter Element ($17.99) 10-micron spin-on cartridge R12T Clear Nylon Collection Bowl ($13.99) Replacement drain bowl R12H Marine Aluminum Combo ($49.99) Premium marine-grade system Related Guides: R12T vs R12H: Real Customer Review (20K+ Views) R12T Installation Guide Step-by-Step R12T Marine Installation: NPT & ZG Fittings Guide