Lightweight Full Cast Brake Drum 3807X 16.5x8.6" Outboard Mount

Lightweight Full Cast Brake Drum 3807X | 16.5" x 8.625" Outboard Mount for Class 8 Trucks

Product Overview

The 3807X Brake Drum is a premium, lightweight full-cast solution designed for heavy-duty commercial vehicles. Engineered for the 16.5" x 8.625" wide-brake system, the 3807X provides the structural integrity of a full-cast drum while significantly reducing unsprung weight.

Manufactured from high-carbon G3000 grey iron, our 3807X drum is optimized for heat absorption and rapid dissipation. It is an ideal choice for weight-sensitive applications, such as liquid tankers, dry bulk haulers, and long-haul fleets looking to maximize payload without compromising safety or durability.

Technical Specifications

Vehicle Compatibility

The 3807X Brake Drum is a high-performance replacement for major North American Class 8 truck and trailer systems:

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Truck Brands: Freightliner (Cascadia), Kenworth (T680), Peterbilt (579), and International Navistar.

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Axle Manufacturers: Directly compatible with Meritor, Dana (Spicer), and Hendrickson 23,000 lb. axles.

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Application: Specifically designed for drive axles and trailer axles using wide-profile brake shoes.

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Cross-Reference & Interchange

This product is a direct interchangeable replacement for the following reference numbers:

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Gunite: 3807X, 3807

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Webb: 68730F, 68730

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Meritor: 53-123565-002 (Lightweight variant)

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Dayton: 123565

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Haldex: 3807X

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Fleetrite: FLT3807X

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Key Benefits

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Optimized Payload Capacity: The 3807X is engineered to be approximately 10 lbs lighter than standard 3800AX drums, allowing for increased cargo capacity per trip.

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Superior Heat Management: High-carbon iron metallurgy prevents heat checking and brake fade, ensuring stable performance during repetitive heavy braking.

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Precision Dynamic Balancing: Every drum is pre-balanced to G16 grade to eliminate vibration, extending the life of your hub seals, bearings, and tires.

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Full Cast Integrity: Unlike composite drums, our 3807X full-cast design offers uniform expansion and contraction, reducing the risk of drum out-of-roundness.

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FAQ

Q1: Can I replace my 3800AX with a 3807X?

A: Yes. The 3807X shares the same fitment dimensions (16.5" x 8.625") as the 3800AX but offers a lighter weight. It is a popular upgrade for fleets focused on weight reduction.

Q2: Is this drum suitable for severe-duty off-road use?

A: While the 3807X is extremely durable, it is primarily optimized for on-highway applications. For extreme off-road or vocational use (like logging or mining), we recommend our standard-weight heavy-duty series.

Q3: Does the lightweight design affect the braking power?

A: Not at all. The 3807X meets all FMVSS-121 requirements. The weight reduction is achieved through optimized casting geometry, not by sacrificing the friction surface.