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Euclid · Brakes & Wheel End
E5988L.
In stock · ships from Knoxville
The Euclid E5988L is a left-hand threaded inner cap nut designed for dual-mounted aluminum wheels on heavy-duty trucks.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
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All confirmed applications for this part number.
Other applications
Other applications
Left-hand thread; typically used on the left side positions of the vehicle. Always verify stud thread dimensions and wheel mount type before replacement.
Part data verified against 3 catalog sources
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It secures the inner dual wheel to the hub, providing full inner thread engagement for maximum clamping force and safety. This through-hardened Grade 8 nut is typically replaced when threads are damaged, during wheel-end rebuilds, or when switching to aluminum dual wheels requiring proper thread depth.
Part Number: E5988L.
L/H INNER NUT DUAL AL.
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
