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Post Onsite · Electrical & Lighting
56
In stock · ships from Knoxville
This is a rubber grommet for Betts single-contact lamp sockets, used to secure and seal the bulb socket in clearance, marker, and stop/turn/tail lights on heavy-duty trucks and trailers.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
We don't publish fitment for this part yet. Rather than guess, get it confirmed against your truck in under a minute.
It cushions the socket against vibration and prevents moisture and dirt from entering the lamp housing. Replacement is needed when the grommet becomes brittle, cracked, or loses its grip, which can lead to socket looseness and electrical failures. The single-contact design fits one-wire bulbs commonly found in basic marker and clearance lights.
Part Number: 56
BETTS SINGLE CONT. GROMMET
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside electrical & lighting
