Best Trailer Jack Gear Box: Top Replacements for 5th Wheel RVs

Finding a reliable trailer jack gear box is essential for smooth, safe, and hassle-free RV adventures. This guide highlights five highly compatible, durable options designed to fit Lippert Venture, Atwood, Pac-Rim, and Stromberg-Carlson landing gear systems. Each pick is evaluated for compatibility, ease of installation, and long-term durability to help you make an informed choice for your fifth wheel or travel trailer.

Product Brand Notes
ONYUOKU 276602 ONYUOKU Universal mount, aluminum housing, compatible with multiple LG models
JDMON 276602 JDMON Strong metal housing, tested OE fit for LG-1 to LG-4 and more
Dexonu Fifth Wheel Gear Box Dexonu Direct replacement for 276602 and 179015
FHRHRY 276602 Box FHRHRY OEM-standard aluminum gearbox with reliable fit
Stromberg Carlson Gearbox Stromberg Carlson Aluminum housing; compatible with major landing gear brands

ONYUOKU 276602 RV Fifth Wheel Landing Gear Gear Box

ONYUOKU 276602 Gear Box

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The ONYUOKU 276602 gear box is designed as a versatile replacement for popular universal mount landing gear on fifth wheels and travel trailers. It targets Lippert Venture, Atwood, Pac-Rim, and Stromberg-Carlson systems (LG-1, LG-2, LG-3, LG-4, or LG-183708). The box is built to minimize installation time, with included fasteners and a straightforward fit that supports smooth extension and retraction of the landing gear jack. This makes it well-suited for RVers who want reliable performance with minimal downtime during maintenance or upgrades.

Key benefits include broad compatibility, efficient installation, and dependable operation. The aluminum construction helps resist wear and offers improved durability over lower-grade plastic alternatives. When replacing a worn gearbox, this part aims to restore original functionality and contribute to safer, easier jacking during setup and takedown at campsites or along remote routes.

Compatibility notes: Confirm the part number and model family before ordering. This gearbox targets a universal mount approach and is intended for various stall and travel trailer configurations, ensuring a good match for many common landing gear assemblies.

JDMON 276602 Gearbox for RV Fifth Wheel Landing Gear

JDMON 276602 Gearbox

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The JDMON 276602 gearbox offers a robust metal housing with solid gears designed for heavy-duty use. It targets models LG-1 through LG-4 and LG-183708, with broad compatibility across Venture, Lippert, and Pac-Rim landing gear components. This replacement part emphasizes durability and OE-like fit, with extensive testing to ensure proper alignment and secure mounting. The gearbox is positioned as a reliable upgrade for those seeking to restore or upgrade their fifth wheel’s power gear system without sacrificing performance.

Highlights include enhanced strength over plastic OEM components, thorough testing for fit, and compatibility with a wide range of landing gear configurations. By choosing this gearbox, campers may experience smoother operation and a longer service life, reducing the frequency of maintenance and parts swapping on trips.

Buying tip: Double-check model numbers and the specific LG family in your setup to ensure the best match. Proper torque during installation helps maintain long-term stability during travel and jounces on uneven surfaces.

Dexonu Fifth Wheel Gear Box Replaces 276602 179015

Dexonu Gear Box

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The Dexonu gearbox is pitched as a direct replacement for 276602 and 179015 parts. It emphasizes compatibility with Lippert Venture, Atwood, Pac-Rim, and Stromberg-Carlson landing gear systems, including LG-1 through LG-4 and LG-183708. The design uses durable aluminum construction to improve longevity and provide reliable performance under RV operating conditions. This option is presented as a cost-effective way to restore smooth gear operation and ensure dependable jacking in various travel scenarios.

Design and compatibility notes: Prioritize models and part numbers precisely to ensure a proper match. The Dexonu gearbox is intended for universal mount configurations, enabling broad applicability across multiple landing gear families and vehicle types.

Maintenance thought: If you notice sluggish gear action or irregular noise, rechecking mounting hardware and lubricant flow can support longer gearbox life and steadier jacking performance.

FHRHRY 276602 Box for RV Fifth Wheel Landing Gear

FHRHRY Gear Box

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The FHRHRY 276602 gearbox claims OEM-standard construction with aluminum housing for robust performance and reliable installation. It supports universal mount landing gear on 5th wheel RVs and is designed to fit Stromberg Carlson models LG-1 through LG-4 and LG-183708, as well as Lippert, Venture, Atwood, Pac-Rim systems. The product emphasizes a precise fit with matching holes and pins to ensure stable, secure mounting during operation.

Practical considerations include ensuring the correct part number (276602 and 179015 equivalents) and verifying the mechanical compatibility with your vehicle’s jacking system. An aluminum build is noted for improved durability and resistance to corrosion, contributing to extended service life in varying climates and road conditions.

Installation tip: Use recommended torque specs and verify full travel range after mounting to confirm there are no interferences with other undercarriage components.

Stromberg Carlson Gearbox for 5th Wheel Landing Gear

Stromberg Carlson Gearbox

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The Stromberg Carlson gearbox is designed specifically for fifth wheel landing gear and trailer jack applications, featuring a heavy-duty aluminum housing for longevity and strength. It integrates with Lippert, Venture, and Pac-Rim landing gear setups, supporting reliable operation across a broad range of configurations. The aluminum construction helps resist wear in demanding camping environments, reducing the likelihood of gear misalignment or fatigue over time.

Key considerations include confirming compatibility with your current system’s models (such as LG-1 to LG-4 and beyond) and ensuring a proper seal and lubrication path to maximize efficiency in all weather conditions. This option is suitable for RVers who require a sturdy gearbox with proven collaboration across major landing gear brands.

Buying Guide: Key Purchase Considerations

  • Compatibility: Check the part numbers (276602, 179015, LG-1 to LG-4, LG-183708) and model families listed by each gearbox. Ensure the replacement matches your landing gear system’s brand and mount type.
  • Material and Durability: Aluminum housings are common for longevity and corrosion resistance. Compare gear material as well; metal gears generally offer stronger performance than plastic equivalents.
  • Ease of Installation: Look for gearboxes that include necessary hardware and have straightforward mounting procedures. Some models emphasize direct replacement to minimize modification needs.
  • OE-Style Fit and Alignment: A precise D-shaped hole, pin, and mounting footprint help ensure a secure installation and proper transmission alignment during operation.
  • Performance and Longevity: Consider users’ feedback on smooth jacking action, reduced noise, and consistent performance under various travel conditions and weather.
  • Warranty and Support: Favor brands that back their gear boxes with clear warranty terms and responsive customer support, especially for critical RV components.
  • Budget vs. Longevity: While some options may be priced similarly, prioritize long-term reliability and compatibility to prevent repeated replacements and downtime on trips.
  • Direct Replacement Assurance: If replacing an existing part, confirm that the new gearbox directly replaces the old part numbers (e.g., 276602, 179015) to avoid mismatches.

In selecting a trailer jack gearbox, consider your RV’s brand ecosystem (Lippert, Venture, Atwood, Pac-Rim, Stromberg-Carlson) and the LG family it uses. A robust aluminum gearbox that matches the OEM’s mounting geometry will typically yield smoother operation, fewer maintenance visits, and greater confidence during travel. For installations or upgrades, using the included hardware and verifying alignment are essential steps to ensure optimal performance across your camping season.

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