Lippert 12-1/4" x 3-3/8" Trailer Brake Drum for 10,000 lb Axles 183537
Replacement trailer brake drum for 10,000 lb axle applications using a 12-1/4" x 3-3/8" brake size and 8 on 6-1/2" bolt pattern. Built from durable cast iron and designed for electric or hydraulic drum brake systems.
Overview
This Lippert trailer brake drum is a replacement drum-only component for 10,000 lb trailer axle applications. It is built for 12-1/4" x 3-3/8" brake assemblies and uses an 8 on 6-1/2" bolt pattern, making it a strong replacement choice when the existing drum is worn, damaged, heat-checked, or no longer braking smoothly.
R&P Service Insight
Brake drums work directly with the brake shoes to create stopping force. On heavy trailers, worn or damaged drums can reduce braking performance, create vibration, accelerate shoe wear, and make brake adjustment harder to dial in correctly.
- Drum Match: Verify the 12-1/4" diameter and 3-3/8" brake width before ordering.
- Axle Capacity: Intended for 10,000 lb axle applications where the drum specifications match.
- Brake System: Suitable for electric or hydraulic drum brake setups using the matching brake size.
R&P Knowledge Hub
Compatibility: Designed for trailer applications using a 12-1/4" x 3-3/8" brake drum, 8 on 6-1/2" bolt pattern, and 10,000 lb axle configuration.
Vehicle / System Fit: Trailer drum brake systems on compatible 10,000 lb axle applications.
Installation Notes: Confirm brake size, bolt pattern, axle rating, hub/drum style, bearing/seal compatibility, and brake type before installation.
Performance Insight: Cast iron brake drum construction provides the friction surface needed for consistent trailer braking when paired with the correct electric or hydraulic brake assembly.
Brand & Fitment Note
Selling Brand: Lippert
Application Reference: Any axle, brake, or trailer system references in this listing describe compatibility, fitment target, or application style only where supported by verified dimensions and configuration details.
What This Means: This listing is for a Lippert trailer brake drum component identified by part number 183537.
Before Ordering: Verify brake size, bolt pattern, axle capacity, hub/drum configuration, bearing and seal requirements, wheel fitment, and included components before installation.
R&P Repair Insight
Replacing a trailer brake drum is not just about matching axle weight. The brake diameter, brake width, bolt pattern, drum-only configuration, and wheel-end components all need to line up. A mismatch can create poor brake contact, wheel fitment issues, or an incomplete repair.
- Brake Size Check: Confirm the existing brake setup is 12-1/4" x 3-3/8" before ordering.
- Bolt Pattern Check: Verify the wheel bolt pattern is 8 on 6-1/2".
- Component Check: This listing identifies the included item as a trailer brake drum; do not assume bearings, seals, hardware, or brake assemblies are included unless shown separately on your order.
Features
10,000 lb Axle Application
Designed for compatible 10,000 lb trailer axle wheel-end applications where the listed drum specifications match.
12-1/4" x 3-3/8" Brake Size
Matches trailer brake systems using a 12-1/4" brake diameter and 3-3/8" brake width.
8 on 6-1/2" Bolt Pattern
Built for wheel-end applications requiring an 8 on 6-1/2" bolt pattern.
Cast Iron Drum Construction
Durable cast iron construction provides the friction surface needed for electric or hydraulic trailer drum brake operation.
Specifications
| Specification | Detail |
|---|---|
| Part Number | 183537 |
| Model | LI77AJ |
| Brand | Lippert |
| UPC | 848150068989 |
| Product Type | Trailer brake drum / drum only |
| Application | Trailer drum brake systems for compatible 10,000 lb axle applications |
| Material / Finish | Cast iron construction |
| Brake Size | 12-1/4" x 3-3/8" |
| Bolt Pattern | 8 on 6-1/2" |
| Axle Capacity | For 10,000 lb axles |
| Brake Compatibility | Allows for electric or hydraulic drum brakes where specifications match |
Fitment / Application
| Category | Details |
|---|---|
| Vehicle / System | Trailer wheel-end drum brake system |
| Primary Fit | Compatible 10,000 lb trailer axle applications using 12-1/4" x 3-3/8" brake drums |
| Secondary Fit | Electric or hydraulic drum brake systems where the drum size, bolt pattern, and wheel-end configuration match |
| Notes | Verify the existing drum dimensions, bolt pattern, axle rating, bearing and seal requirements, and brake assembly size before installation. |
Included Components
| Quantity | Item |
|---|---|
| 1 | Lippert trailer brake drum |
| Not specified | Bearings, seals, lug nuts, brake assemblies, and mounting hardware are not listed as included in the provided product details. |
