🔧 RAM TJD-12000-GR — Replacement Sidewind Gear Kit for RAM Square Direct-Weld Jacks | 10,000–12,000 lb Series

Don't replace the whole jack when the gears are all that's worn out. The RAM TJD-12000-GR is the genuine replacement sidewind gear kit for RAM and etrailer square, direct-weld trailer jacks in the TJD-12000 Series. This kit includes all the gears and roll pins needed to fully rebuild the gearbox and restore smooth, reliable operation to your heavy-duty sidewind jack. Commonly needed after years of use on equipment, gooseneck, and flatbed trailers — stripping gears is normal wear on a hard-working jack, and this kit saves you $100+ over buying a whole new jack leg.

⚙️ Key Features

• Genuine RAM Replacement Part — OEM specification gears designed specifically for TJD-12000 Series square jacks
• Includes All Gears & Roll Pins — Complete kit with both gears and roll pins needed for a full gearbox rebuild; no hunting for individual components
• Restores Full 10,000–12,000 lb Capacity — Returns your jack to original rated performance when installed correctly
• Taller Gear: 1-3/4" inner diameter, 2-1/2" outer diameter
• 15 Teeth Per Gear — Precision-cut bevel gears for smooth, efficient sidewind operation
• Saves Significant Cost — Rebuilding the gearbox costs a fraction of replacing the entire jack leg
• Compatible with Pre-2012 and Post-2012 Jacks — Note: Pre-2012 jacks with bearing washer design may require additional parts; see installation notes below

📐 Specifications

• Brand: RAM Trailer Products
• MPN: TJD-12000-GR
• Also Known As: TJD12000GR, TDJ-1200-GR
• Compatible Jack Capacity: 10,000 lb lift / 12,000 lb support (TJD-12000 Series)
• Kit Contents: 2 bevel gears + roll pins
• Taller Gear OD: 2-1/2"
• Taller Gear ID: 1-3/4"
• Gear Teeth: 15 per gear
• Gear Thickness: 0.5"

✅ Compatible Jack Models (TJD-12000 Series)

• TJD-12000SP-F2 — 10K Sidewind, 12-3/8" travel, with handle
• TJD-12000SP-R2 — 10K Sidewind, 12-1/4" travel, with handle
• TJD-12000SP-R2NH — 10K Sidewind, 12-1/4" travel, without handle
• TJD2SP-12000SP-F — 10K Sidewind square jack variant
• All RAM/etrailer square direct-weld sidewind jacks in the TJD-12000 Series

🔧 Installation Notes

• Remove the cap (see TJD-12000-CP if cap is damaged) to access the gearbox
• Extract worn gears and roll pins; insert new gears and secure with included roll pins
• Pre-2012 jacks with bearing washer: If your jack was manufactured before 2012 and has a bearing washer inside, the bearing washer is no longer available as a replacement part — in this case, full jack replacement is recommended
• Etrailer/RAM rebuild video available online — search "TJD-12000-GR rebuild" for step-by-step guidance

🔁 Other Replacement Parts for TJD-12000 Series Jacks

• TJD-12000-HD — Replacement sidewind crank handle
• TJD-12000-BR — Replacement bearing
• TJD-12000-CP — Replacement cap (4" x 4" outer tube)
• TJD-12000-RSP — Replacement return spring
• TJD-12000-PPN — Replacement plunger pin assembly
• TJD-12000-RODNUT — Replacement rod and nut
• TJD-12000-CLIP — Replacement handle clip
• TJD-12000-SHABUS — Replacement handle shaft

📞 Questions? Call or text us: 517-225-1991 | AAATrailer.com — Howell, MI · Same-day shipping on most in-stock orders · Largest online selection of trailer parts in Michigan

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• Address: 4675 East Grand River Ave, Howell, MI 48843
• Phone: (517) 225-1991 (Call or text)
• Hours: Monday to Friday: 10:00 AM - 5:30 PM | Saturday: By appointment

Thank you for considering AAA Trailer. We're excited to help you hit the road with confidence! If you have any questions, don't hesitate to contact us.

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 We will be happy to assist you with eligible returns, the return instructions, and the shipping address. If you need a return or exchange, send us an email so we can discuss a replacement.