Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
National Liftgate Parts · Electrical & Lighting
FMF3391
In stock · ships from Knoxville
This is a 4-way drain valve kit for electric-hydraulic liftgate systems.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Other applications
Other applications
Designed for liftgate hydraulic control systems, especially Maxon units. Verify terminal style and valve dimensions before ordering.
Part data verified against 3 catalog sources
Numbers this part supersedes or interchanges with. Showing 2 of 2.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It includes the solenoid coil with two spade terminals, a valve stem, and necessary seals to control hydraulic fluid flow during liftgate operation. You typically replace this solenoid when it fails, causing the liftgate to drift down, not stay raised, or leak fluid. It is a common service part for Maxon and similar liftgate brands.
Part Number: FMF3391
ELECTRIC SOLENOID - 2 WIRE
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
