12-1/4" x 3-3/8" Hub & Drum – Fits Lippert 791399 – 9K–10K Axles – 8 on 6.5", 5/8" Studs
12-1/4" x 3-3/8" Hub & Drum – Fits Lippert 791399 – 9K–10K Axles – 8 on 6.5", 5/8" Studs is backordered and will ship as soon as it is back in stock.
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Care information
Care information
To ensure optimal performance and extend the service life of your new trailer components, please follow these care guidelines after purchase:
- Before installation, check all parts for shipping damage or missing components. Do not install damaged parts.
- Always use correct tools and torque settings. Improper installation can lead to premature wear or failure.
- For bearings, suspensions, and brake components, apply high-quality trailer grease before first use if not pre-greased.
- Some parts (like brake assemblies) require a short break-in period to achieve full performance. Follow manufacturer instructions for best results.
- Recheck fasteners, grease levels, and moving components after 100 miles of towing, then at regular intervals.
- After exposure to water, road salt, or mud, clean and dry parts thoroughly. Apply anti-rust treatment if needed.
- If storing unused parts, keep them in a dry, sealed container away from moisture and direct sunlight.
Delivery and Shipping
Delivery and Shipping
Handling Time: Orders ship out within 1 business day after payment is received.
Shipping Methods: We use trusted carriers like UPS, FedEx, or USPS based on package size and destination.
Delivery Time: Estimated delivery within 2–6 business days (U.S. domestic orders).
Tracking: A tracking number will be provided once your order is dispatched.
12-1/4" x 3-3/8" Hub & Drum – Fits Lippert 791399 – 9...
This heavy-duty hub and drum assembly is a direct replacement for Lippert part number 791399, compatible with 9,000–10,000 lb general duty trailer axles manufactured after August 2020. Precision-machined from high-strength steel, it delivers reliable braking performance under heavy loads—ideal for commercial, agricultural, and industrial trailers.
The 12-1/4" diameter × 3-3/8" width drum fits both electric and hydraulic 3-3/8" brake assemblies and includes pre-installed bearing races for quick installation. Bearings, oil seal, oil cap, and lug nuts are sold separately.
Perfect for flatbed trailers, equipment haulers, and dual tandem trailers, this assembly meets OEM standards for durability and performance.
Kit Includes:
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(1) Hub & Drum – 12-1/4" diameter × 3-3/8" width
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Pre-installed inner race (382A)
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Pre-installed outer race (25520)
(Bearings, oil seal, oil cap, and lug nuts sold separately)
Key Features:
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Direct Replacement: Fits Lippert 791399 for 9K–10K general duty axles manufactured after Aug 2020
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Precision Fitment: 8 on 6.5" bolt pattern, 5/8" studs, 4-3/4" hub pilot diameter
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Heavy-Duty Construction: Rated for up to 5,000 lbs per hub with exceptional braking performance
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Pre-Installed Races: Inner race (382A) & outer race (25520) factory-installed for convenience
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Versatile Application: Works with both electric and hydraulic 3-3/8" brake assemblies
OEM Replacement / Cross-Reference:
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Lippert 791399
Payment & Security
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