If you want a complete air line connection solution with built-in filtration and sealing, choose Road King Truck Parts 37; if you need heavy-duty leverage for stubborn couplings in cold weather or with thick gloves, choose ROAD SUPERIOR TRUCK PARTS Aluminum Hex Grip. These two components serve different functions on the fleet vehicle, and picking the wrong one will either leave your air system unprotected or make your daily hookups a struggle. I have analyzed the specific design specs and material compositions to help you decide which part belongs on your rig without guessing at performance that isn't documented.
• Road King Truck Parts 37: Best strength is its integrated fine mesh screening and replaceable seals for clean air flow; biggest trade-off is the lack of an extended lever arm for high-torque gripping.
• ROAD SUPERIOR TRUCK PARTS Aluminum Hex Grip: Best strength is the machined hex body providing superior torque and grip even with work gloves; biggest trade-off is that it is a handle extension only, not a full coupling assembly.
• Pick Road King if you are replacing failed gladhands and need protection against debris entering your brake lines.
• Pick ROAD SUPERIOR if your current gladhands are working but you struggle to disconnect them quickly during tight turnaround times.
The Road King Truck Parts 37 Degree Screened Angled Gladhand Pair is designed as a functional replacement unit for the actual connection point between hoses. The core value here lies in the internal engineering rather than just the external shape. The body is constructed from die-cast aluminum, which offers a solid foundation that resists impact better than standard stamped steel alternatives often found on budget parts. This construction method ensures the unit holds its shape under the vibration and stress typical of long-haul operations.
What truly sets this product apart for fleet maintenance teams is the inclusion of replaceable fine mesh screens inside the interior. In real-world conditions, road debris, dust, and moisture can compromise air quality and damage sensitive valve systems downstream. These screens act as a first line of defense, filtering out contaminants before they reach the truck's braking mechanism. Furthermore, the inclusion of replaceable rubber coupling seals means you are not forced to discard the entire unit when a seal wears out. You can service the internals, extending the life of the hardware significantly.
This product is ideal for the driver who values system integrity and wants a "set it and forget it" solution that meets or exceeds SAE J318 requirements. The color-coded red and blue connector plates simplify identification, reducing the chance of cross-connecting supply and emergency lines—a common error that can lead to serious safety incidents. However, if your primary pain point is simply the physical effort required to twist and pull a stuck hose, this straight angled gladhand might feel too short in the hand. It is a robust component for connecting lines, but it does not offer the mechanical advantage of an extended handle.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-11-06 · 7 min read · Independent comparison
The ROAD SUPERIOR TRUCK PARTS Aluminum Hex Grip takes a completely different approach to solving the same problem of air line connectivity. Instead of replacing the entire coupling mechanism, this product acts as a high-performance interface installed directly between the gladhand and the air brake line. The standout feature here is the one-piece body machined from solid billet aluminum. This manufacturing process creates a single, continuous piece of metal without welds or joints, resulting in a component that is incredibly rigid and resistant to bending under extreme force.
The geometry of this grip is where it shines. The hexagonal exterior provides multiple flat surfaces that allow a wrench or gloved hand to apply significant torque without slipping. This is critical for drivers who frequently operate in winter conditions where thick, bulky gloves reduce dexterity. The pre-applied thread sealant on the male threads also saves time during installation, ensuring a leak-free seal right out of the box. Additionally, the anodized finish serves a dual purpose: it provides corrosion protection against salt and road grime while maintaining the crucial red and blue color coding for easy visual identification.
This product is best suited for fleets where speed of operation is paramount. If your drivers spend hours every day hitching and unhitching trailers, the ability to break a coupling loose with minimal effort reduces fatigue and increases turnover efficiency. The design explicitly helps reduce hose crimping by allowing the operator to maintain better control over the angle of the pull. However, buyers should understand that this is not a replacement gladhand. It is an accessory that requires existing gladhands to function correctly. If your current couplers are worn out or damaged, installing these grips will not solve the underlying issue of leaking air or poor connections.
• Best for Air System Filtration: Road King Truck Parts 37 wins hands down because of its internal fine mesh screen, whereas the hex grip offers no filtration capabilities.
• Best for Corrosion Resistance: Both use aluminum, but the ROAD SUPERIOR grip features an anodized finish specifically noted for added corrosion protection compared to the standard die-cast of the Road King.
• Best for Physical Leverage: ROAD SUPERIOR TRUCK PARTS is the clear winner here; the hex shape and extended handle length provide mechanical advantage that the standard 4.5-inch Road King unit cannot match.
• Best for Fleet Maintenance Simplicity: Road King Truck Parts 37 includes replaceable seals and screens, allowing for cheaper long-term repairs without buying new units.
• Best for Cold Weather Operation: The hex grip is superior for gloved hands in freezing temperatures due to its large, flat gripping surfaces and non-slip design.
• Best for Complete Connection Replacement: If your old gladhands are broken, you must choose Road King Truck Parts 37; the hex grip is useless without a functional base gladhand.
• Best for Leak Prevention: Both meet strict standards, but the Road King's replaceable rubber seals offer a direct path to fixing leaks, while the hex grip relies on the pre-applied sealant on the extension threads.
• Best for Space-Constrained Bays: The compact 1.25 x 5.2 inch footprint of the ROAD SUPERIOR grip might fit better in tight storage areas compared to the bulkier 4.5-inch Road King assembly.
For my own recommendation regarding fleet vehicles, I would choose the Road King Truck Parts 37 as the primary purchase. While the hex grip is excellent for leverage, a fleet's priority should always be the integrity of the air system itself. The Road King unit solves the root cause of many issues—contaminated air and worn seals—rather than just making the connection easier. Protecting the valves and chambers from debris is a proactive safety measure that pays off in reduced downtime. However, if your drivers are constantly complaining about frozen couplings or difficulty breaking lines loose, I would strongly advise adding the ROAD SUPERIOR TRUCK PARTS Aluminum Hex Grip as a secondary tool to complement the Road King gladhands. In my opinion, combining the filtration of the Road King with the leverage of the Hex Grip creates the most robust setup for demanding commercial transport.
The Road King Truck Parts 37 installs like a standard gladhand using a wrench on the 1/2 inch port. The ROAD SUPERIOR grip also uses standard 1/2 inch threaded ports but may require more torque due to the larger handle size; both come ready for standard shop tools.
No, the hex grip is an extension handle and requires a sound, functioning gladhand to connect to. If your gladhands are cracked or leaking, you must replace the entire unit with something like the Road King Truck Parts 37 first.
Yes, the hexagonal design provides flat surfaces for grip even with thin gloves, though the large size is most beneficial for thick winter gear. The Road King gladhand relies on the smooth plastic/metal surface which can be slippery with any glove type.
No, the fine mesh screens in the Road King Truck Parts 37 are replaceable. This design allows you to clean or swap the screen if it becomes clogged, extending the lifespan of the part.
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