Description
Fuel Pump Nipple 7/3.8 (Rotax Part No. 840740)
Description
This precision-machined metal nipple is an essential component for mechanical fuel pumps on Rotax 912UL/ULS engines. It connects the pump outlet to fuel lines, ensuring secure fuel flow under engine operation.
Key Features
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Designed to fit Rotax mechanical fuel pump outlet (7 mm diameter to 3.8 mm)
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Manufactured to OEM specification for Rotax fuel systems
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Machined from durable corrosion-resistant metal
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Compact and easy to install with standard tools
Benefits
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Ensures precise fuel delivery with a reliable connection
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Prevents leaks from fitting mismatches or vibration
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OEM-quality assurance for part compatibility and durability
Application Notes
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Always replace both inlet (9/5.7) and outlet nipples during pump overhaul, per Rotax service bulletin SB‑912‑076UL
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Use proper Gasket rings and thread sealant (Loctite 577 per bulletin) during reinstallation
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Torque fittings to approximately 10 Nm to maintain proper sealing without over-tightening
