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(888) 312-8812 Login SignupGUNITE 3687X Brake Drum, Cast Iron, Outboard, 16.50x6.00 (Gunite)
MSRP: $631.38
$32699
Save $304.39
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In Stock
Get it by Friday, Jul 24
GUNITE 3687X Part Description
Manufacturer
Features & Benefits
- Precision-machined cast iron braking surface for smooth, balanced braking engagement
- Engineered for 16.50 x 6.00-inch air brake systems commonly used on heavy-duty trucks
- Outboard-mounted drum design allows service without removing the hub and bearings
- Promotes even heat distribution to reduce brake chatter, hot spotting, and pedal pulsation
- Maintains structural stability under repeated thermal cycling and high braking loads
Gunite Brake Drum
Maintain consistent stopping power and smooth braking engagement with the Gunite Brake Drum. Designed for 16.50 x 6.00-inch air brake systems, this outboard-mounted cast iron drum is precision-machined to deliver a stable, uniform friction surface that helps reduce vibration and brake chatter. The Gunite 3687X features an outboard design that installs directly over the wheel studs, allowing faster drum replacement without disturbing the hub or bearings. Built from high-quality cast iron, the drum manages heat evenly across the braking surface to minimize grabbing and uneven wear when operating under heavy loads or frequent stop-and-go conditions.
Technical Specifications
| Aftermarket Status | Active |
| Finished Weight | 108 |
| Maximum Wear Diameter | 16.62 |
| Drum Mount | Outboard |
| Drum Type | BDA |
| Wheel Type | Disc |
| Overall Diameter | 18.88 |
| Dust Shield Recess Diameter | 17.62 |
| Dust Shield Recess Depth | 0.73 |
| Brake Size | 16.50x6.00 |
| Brake Surface Diameter | 16.5 |
| Brake Surface Width | 6.52 |
| Mounting Flange Diameter | 13.38 |
| Overall Depth | 9.74 |
| Pilot Diameter | 8.78 |
| Bolt Circle Diameter | 11.25 |
| Number of Bolt Holes | 10 |
| Bolt Hole Size | 1.25 |
| Squealer Band Width | 1.92 |
| Mounting Flange Thickness | 0.62 |
| Outside Sidewall Diameter | 14.76 |
| Sidewall Offset | 1.14 |
| Inside Finished Diameter | 12.96 |
GUNITE 3687X Cross References
| Brand | Part Number |
|---|---|
| GUN3687X | |
| MERITOR | 85123399002 |
| WORLD AMERICAN | WA140-0005 |
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GUNITE 3687X Manufacturer Information
Heavy-duty truck and trailer manufacturers rely on Gunite® for high-quality brake drums, brake rotors, slack adjusters, hubs, and hub assemblies. A brand under Accuride Corporation, an industry leader in the manufacturing of wheels and wheel-end components for the global commercial vehicle markets, Gunite delivers world-class quality by designing and manufacturing its products in its own factory located in Rockford, Illinois. Gunite’s aluminum brake drums and other products go through rigorous vehicle field testing at fleets to ensure reliable performance even under extreme road conditions. They are proven, year after year, as the industry standard in providing maximum performance, long-term reliability, and reduced maintenance costs.
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