FUEL SAMPLER CUP (P/N 391d) - New Surplus
P/N: 391d
Category: Fuel Drains & Sumps
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| New Surplus | 2 Available |
Product Description
The 391d is a fuel sampler cup for drawing fuel samples from aircraft sump drains during preflight inspection. This clear plastic cup interfaces with common quick-drain valves, including F391-series flush drains found on many general aviation aircraft. Pilots and technicians use the sampler to visually inspect fuel for water contamination and particulates before flight.
Simply position the cup at the sump drain, operate the valve with the cup's probe, and collect the sample. Follow your aircraft's POH procedures for proper sampling technique and fuel disposal.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the FUEL SAMPLER CUP (P/N 391d)?
The 391d is a fuel sampler cup for drawing fuel samples from aircraft sump drains during preflight inspection. This clear plastic cup interfaces with common quick-drain valves, including F391-series flush drains found on many general aviation aircraft.
Is the 391d compatible with AVGAS and Jet-A fuels?
Fuel system components are designed for specific fuel types per their engineering specifications. The FUEL SAMPLER CUP should be verified against your aircraft's fuel system requirements. Currently available in: New Surplus. Contact us for fuel compatibility details.
Does the 391d require companion seals or gaskets for installation?
Many fuel system components require new gaskets, O-rings, or seals during installation. Check your aircraft maintenance manual for the FUEL SAMPLER CUP installation requirements. We stock related sealing components and can help identify companion parts.
Are there shipping restrictions for the 391d?
Most fuel system hardware ships via standard methods. Certain items containing fuel residue may require hazmat shipping procedures. We handle all packaging and shipping compliance. Same-day processing available for in-stock items.
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