Dual Dynamics 257-P Hub Oil

DUAL DYNAMICS 257-P Part Description

Manufacturer

Features & Benefits

Guards wheel-end oil from dirt water and road contamination
Pressure vent relieves vacuum and pressure changes inside the operating hub
Speeds wheel-end lubricant checks without requiring complete hub-cap removal
Lexan window makes wheel-end lubricant level visible during inspection

Dual Dynamics Oil Hub Cap

During wheel-end inspections, the Dual Dynamics Oil Hub Cap lets you see lubricant level without removing the cap while protecting the hub opening from road contamination. Made with an aluminum body and clear Lexan window, the cap combines corrosion resistance with a direct view of the oil level. That venting action lets pressure equalize inside the hub while the cap continues helping keep dirt and water outside. With the Dual Dynamics 257-P in place, you can monitor lubricant level while the hub continues breathing through normal pressure changes.

HUBCAP

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DUAL DYNAMICS 257-P Manufacturer Information

Headquartered in Lincoln, Nebraska, Dual Dynamics® is a family-owned company known for its Dual Guard Die Cast Aluminum Hubcaps. It also offers the Crossfire Dual Tire Pressure Equalization System, Load-N-Lock Lockable Anti-Theft Storage System, Dyna Lock Load Bars, and Valve Extenders. The company's first product was the Crossfire Tire Pressure Equalizer, with more than 1 million units sold. Founded in 1981, Dual Dynamics has evolved and expanded its product line to include aluminum hubcaps, cargo control devices, load bars, and valve extenders to cater to customers' changing needs. The company, being an ISO 9001:2015 registered company, ensures all its manufacturing processes conform to the highest quality and safety standards.

DUAL DYNAMICS 257-P Questions & Answers

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Q: by Tracy Harrsion on January 13, 2026

We currently did some testing on our axles that used your 257-PS hub cap. Is there any information pertaining to how much heat your hub caps will take before any issues arise. We did IR heating up to 200°C, just wanted to know if we will have any concerns or quality issues with that temperature.

A: by Ed Staff on March 05, 2026

there is potential for heat damage at 250°F or higher.

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