FB1311 FUEL FILTER BASE FOR FILTER FF104 FF105 FF105C FF105D FF213 FS1000 FS1212 FS1242 BF948 BF957 BF1249 1R-0750 14278

iFJF part No.: FJ-1212-DZ. FB1311 Fuel Filter Base Universal Diesel Spin-On Filter Head The FB1311 Fuel Filter Base is a robust replacement filter head for spin-on diesel fuel filters. Compatible with FF104, FF105, FF105C, FF105D, FF213, FS1000, FS1212, FS1242, BF948, BF957, BF1249, and Caterpillar 1R-0750 filters, this base provides a secure, leak-free mounting solution for agricultural, construction, and over-the-road diesel applications. Key Features Universal Compatibility: Precision 1 -14 UNF threads accept FF-series, FS-series, BF-series, and Caterpillar 1R-0750 spin-on fuel filters with standard thread pattern. Heavy-Duty Aluminum Alloy: Corrosion-resistant anodized finish withstands diesel fuel exposure, heat cycling, and vibration without cracking or pitting. Leak-Free Seal: Precision-machined sealing surface ensures perfect gasket mate eliminates fuel weep and air intrusion common with worn OEM bases. Flexible Port Configuration: 1/2 NPT inlet and outlet ports with pre-installed plugs for both left and right-hand fuel line routing. IATF 16949 Certified: Manufactured to OEM-equivalent quality standards with 100% dimensional inspection. Technical Specifications Specification Value Thread Pattern 1 -14 UNF (Unified Fine Thread) Port Size 1/2 NPT (Inlet & Outlet) Material Aluminum Alloy Anodized Finish Mounting Type 2-Bolt Flange Mount Application Primary/Secondary Diesel Fuel Filtration Vehicle & Engine Compatibility Filter Series Compatible Part Numbers FF-Series FF104, FF105, FF105C, FF105D, FF213 FS-Series FS1000, FS1212, FS1242 BF-Series BF948, BF957, BF1249 Caterpillar 1R-0750, 142784S Why Choose This Product? Fuel filter bases degrade over time vibration, heat cycling, and corrosive diesel cause aluminum to pit, crack, and develop vacuum leaks. A leaking base introduces air into your fuel system, causing hard starts and power loss. The FB1311 replaces your worn base with factory-spec dimensions and upgraded sealing surfaces. Installation Notes Clean mounting surface thoroughly before installation Apply clean diesel fuel to filter gasket before spinning on Hand-tighten + 3/4 turn do NOT over-tighten Prime fuel system and check for leaks before starting Frequently Asked Questions Q: Will this fit my FF105 filter? A: Yes. The FB1311 is designed for FF104, FF105, FF105C, FF105D, and all filters in the FF105 family with 1 -14 UNF threads. Q: What thread pattern does this filter base use? A: The filter mounting stud uses 1 -14 UNF threads, which is the industry standard for spin-on diesel fuel filters in this size class. Q: Does the filter base come with mounting bolts? A: The base includes the filter head only. Mounting bolts are typically M8 or 5/16 reuse your existing hardware or source locally. Q: How do I know if my filter base needs replacement? A: Signs include fuel weeping around the filter seal, air in the fuel system (hard starting, rough idle), visible corrosion or pitting on the sealing surface, and stripped or damaged threads. Q: Is this compatible with biodiesel blends? A: Yes. The anodized aluminum construction is compatible with diesel, biodiesel blends up to B20, and standard diesel fuel additives. Order your iFJF replacement part today and experience the quality difference. Fast shipping from our US warehouse.