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Euclid · Brakes & Wheel End
E5977L
In stock · ships from Knoxville
This is a left-hand threaded outer cap nut designed for heavy-duty trucks and trailers running single or dual wheels.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
This part is designed specifically for the left-hand side of the vehicle. It is a standardized outer cap nut for 1-1/8"-16 studs and fits a wide range of heavy-duty trucks and trailers utilizing that stud size.
Part data verified against 5 catalog sources
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It screws onto the wheel stud on the driver's side of the vehicle, and its left-hand thread direction is specifically engineered to resist loosening from the rotation of the wheel. You typically replace this when a nut is missing, shows signs of cross-threading, or is rusted and pitted to the point where proper torque cannot be maintained, ensuring the wheel stays securely fastened.
Part Number: E5977L
OUTER CAP NUT, LH
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside brakes & wheel end
