TRP Trailer Equalizer Center Bolt Kit — includes the 7/8"-9 × 4.62" greaseable (wet) center bolt with grease zerk and cotter-pin hole (TRP FA-7-1-0) paired with the matching 7/8"-9 slotted castle nut (TRP FA-6-3). This is the correct replacement hardware for the center pivot point of trailer equalizers on heavy-duty tandem and triple axle suspensions rated 5,200 – 9,000 lbs.

📦 What's Included

• • (1) TRP FA-7-1-0 — 7/8"-9 × 4.62" Wet/Greaseable Equalizer Center Bolt with grease zerk and cotter-pin hole (AAA #854-7112)
• • (1) TRP FA-6-3 — 7/8"-9 Slotted Castle Nut for cotter-pin retention (AAA #854-7212)
• • Cotter pin sold separately — standard 1/8" × 1-1/2" zinc recommended

📐 Specifications

• • Brand: TRP
• • Bolt thread: 7/8"-9 UNC
• • Bolt length: 4.62" (4-5/8")
• • Bolt style: Wet / greaseable with installed grease zerk + cotter-pin hole
• • Nut type: Slotted castle hex, 7/8"-9 UNC
• • Material: Grade 5 steel, zinc plated
• • Bolt MPN: FA-7-1-0 (TRP)
• • Nut MPN: FA-6-3 (TRP)
• • AAA Kit SKU: 854-7112KIT

🔄 Cross-References

• • Bolt (FA-7-1-0): FA710 / 013-034-00 / TRFA71063 / 166078 / 126A1
• • Nut (FA-6-3): FA63 / 006-109-00 / TRFA63 / 78CN / 7108164

🔧 Fitment
Replacement hardware for the center pivot of tandem- and triple-axle trailer equalizers (also called "rockers" or "rocker arms"). Typically fits 5.2K, 6K, 7K, 8K, and 9K leaf-spring axle suspensions. Works with 1-3/4" wide double-eye springs and 2" wide slipper springs that use a 7/8" diameter center equalizer bolt. Common on cargo, utility, car hauler, dump, and equipment trailers. The wet/greaseable bolt lets you pump fresh grease into the bushing without pulling the bolt — extends equalizer bushing life considerably.

🛠️ Installation Tips

• • Torque the slotted nut snug, then back off slightly to align the bolt pinhole with one of the nut's slots
• • Install a new cotter pin — never reuse an old one
• • Pump grease into the zerk until fresh grease appears at the bushing edges
• • Inspect equalizer bushings and replace if worn (common companion replacement)
• • Always service both sides of the trailer at the same time — order two kits for a full tandem replacement

💡 Why AAA Trailer?
Ships same-day from our Howell, Michigan warehouse. One of the largest online trailer parts stores in the country. TRP-brand bolt and castle nut matched and tested together — no mismatched hardware.

📞 Call/Text: 517-225-1991 🌐 AAATrailer.com

What sets us apart is our dedicated team of knowledgeable professionals who are always ready to assist. Great customer service isn't just a promise—it's the foundation of our success. We invite you to visit our showroom or reach out for personalized advice. Whether you're purchasing online or stopping by, we're here to make your trailer journey seamless. Visit Us Today

• 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.