Stemco 340-4024 Cast Aluminum Hub Cap for Heavy-Duty Commercial Vehicles

The Stemco 340-4024 is a traditional cast aluminum hub cap engineered for heavy-duty commercial vehicle applications including trucks, trailers, and heavy haul equipment. This professional-grade wheel end component features a 4.5-inch (4-1/2") bolt circle with 6 bolt holes and 5/16" bolt size, making it compatible with a wide range of commercial vehicle wheel ends.

Key Specifications:

• Overall Depth: 2-5/8 inches
• Inside Depth: 1-7/8 inches
• Inner Flange Diameter: 3-1/2 inches
• Outer Flange Diameter: 5-1/4 inches
• Bolt Circle: 4.5 inches
• Number of Bolts: 6
• Bolt Size: 5/16 inch
• Torque Specification: 12-16 ft-lbs
• Includes Gasket (330-3024)

Design Features:

• Cast aluminum construction prevents warpage and provides superior heat dissipation
• Part of Stemco's traditional 340 series known for durability and reliability
• Compatible with oil, semi-fluid grease, and hard pack grease lubrication systems
• Made in the USA (manufactured in Longview, TX)
• Without side fill plug design

Cross-Reference Information:

• Replaces Volvo part numbers: 858381, 1027518, 527502, 527503, 891033
• Compatible Gasket: Stemco 330-3024
• Window Kit: 359-5999
• Alternative Bulk Version: 300-4024 (same part without retail packaging)

Stemco has been the trusted benchmark in commercial vehicle wheel end components for over 60 years, providing reliable hub caps engineered to meet the demanding performance requirements of modern fleets. This hub cap is designed for tractor and trailer applications where durability and long service life are critical.