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Description
The Valcrum ST-400L aluminum hub cap is engineered for 10,000–16,000 lb trailer axles, offering a premium replacement for traditional plastic oil/grease caps. With a 4" machined thread and a rugged aluminum alloy body, this cap supports both grease-packed and oil bath systems. Its integrated oil level sight window, magnetic vent plug, and drain/fill ports make it ideal for high-performance, service-friendly applications.
Detailed Information:
Thread Diameter
4.00"
Thread Type
Machined Screw-In
Material
Aluminum Alloy
Axle Rating
10,000–16,000 lbs
Fitting:
Designed to fit Lippert and Dexter hubs with 10K–16K capacity. Replaces Lippert 693935 and Valcrum ST-400 (produced after 08/2019). Compatible with both grease and oil bath hub configurations. Uses 4" standard threads and installs using the included hardware.
Features:
Premium Aluminum Construction: Durable and corrosion-resistant for long-lasting performance.
Integrated Sight Window: Allows visual monitoring of oil level without removing the cap.
Magnetic Vent Plug: Captures metal particles to help protect internal axle components.
Service Ports: Built-in drain and fill ports for easy fluid maintenance.
Complete Kit: Includes gasket, O-ring, fill plug, vent plug, retainer ring, screws, and lens.
Kit Contents:
(1) Hub Cap
(1) Oil Level Lens
(1) Retainer Ring
(1) Foam Gasket
(1) Oil Cap Gasket
(1) Magnetic Vent Plug
(1) 1/8"-27 NPTF Fill Plug
(1) O-Ring
(6) Torx Screws
Interchangeable Part Numbers:
ST-400L
Lippert 693935
ST-400 (Post 08/2019)
Product Overview:
The Valcrum ST-400L is a high-performance, 4" universal aluminum hub cap for 10K–16K axles. Designed to outlast plastic alternatives, it features a visible oil window, magnetic debris filtration, and easy-access fluid ports—all in a rugged, service-ready form. Perfect for commercial trailers and fleets requiring reliable, long-term axle protection.
ST-400L - Aluminum Oil/Grease Cap – 4" Thread – For 10K–16K Hubs | VLCRM
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ST-400L - Aluminum Oil/Grease Cap – 4" Thread – For 10K–16K Hubs | VLCRM
