Mon–Fri 9:00 AM–5:00 PM CST  |  Sat 9:00 AM–3:00 PM  |  Sun Closed  |  Call or Text 815-357-3292  •  Free Shipping on Most Orders  •  Real-Time Rates When Applicable  •  Upgrade Delivery at Checkout  |  Ships Next Business Day Monday–Friday  |  We install what we sell — parts backed by real trailer service.  |  Need fitment help? Send us your trailer part photos and we will help you match it right.  |  How are we doing? Leave a review → Mon–Fri 9:00 AM–5:00 PM CST  |  Sat 9:00 AM–3:00 PM  |  Sun Closed  |  Call or Text 815-357-3292  •  Free Shipping on Most Orders  •  Real-Time Rates When Applicable  •  Upgrade Delivery at Checkout  |  Ships Next Business Day Monday–Friday  |  We install what we sell — parts backed by real trailer service.  |  Need fitment help? Send us your trailer part photos and we will help you match it right.  |  How are we doing? Leave a review →
FAMILY OWNED & OPERATED

RAM 2-5/16" Adjustable Channel Mount Trailer Coupler - 16,000 lbs - Zinc Finish (CTA-400-Z-KIT)

$46.99
Most items ship free — select items ship for $6.39
In Stock
Not Sure It Fits? Ask a Pro
Adjustable Trailer Coupler Kit / Hardware Included

RAM CTA-400-Z-KIT 2-5/16" Adjustable Channel Mount Trailer Coupler Kit with Hardware

RAM adjustable channel mount trailer coupler kit built around the CTA-400-Z coupler, paired with the 5/8" Grade 8 mounting hardware needed for the coupler-to-channel installation. Adjustable channel bracket sold separately.

SKU: CTA-400-Z-KIT 2-5/16" Ball Hardware Included

Overview

The CTA-400-Z-KIT is a complete R&P-curated RAM adjustable channel mount coupler kit for customers who need the CTA-400-Z coupler plus the proper 5/8" mounting hardware in one package. The kit includes the zinc-plated RAM 2-5/16" adjustable channel mount coupler, two Grade 8 mounting bolts, four thru-hardened washers, and two Grade 8 nylon insert lock nuts. The adjustable channel bracket is not included.

R&P Service Insight

Adjustable channel couplers often get ordered without the correct mounting hardware. This kit solves that problem by packaging the RAM coupler with the matching Grade 8 bolt, washer, and lock nut setup for the coupler mounting points.

  • Coupler Included: Includes one RAM CTA-400-Z adjustable channel mount coupler.
  • Hardware Included: Includes two 5/8"-11 x 4-3/4" Grade 8 yellow zinc hex cap screws, four 5/8" washers, and two 5/8"-11 Grade 8 nylon insert lock nuts.
  • Bracket Note: Adjustable channel bracket is sold separately and is not part of this kit.

R&P Knowledge Hub

Compatibility: Built for adjustable channel mount trailer coupler applications using the RAM CTA-400-Z coupler and 5/8" mounting hardware.

Vehicle / System Fit: Intended for trailers using adjustable channel-style coupler mounting where the coupler, ball size, bolt size, and bracket dimensions match.

Installation Notes: Confirm your adjustable channel bracket, hole spacing, mounting width, coupler rating requirements, ball size, and hardware fit before installation.

Performance Insight: Including the hardware helps keep the coupler installation consistent by matching the 5/8" Grade 8 bolt, washer, and nylon lock nut set to the coupler mounting points.

Brand & Fitment Note

Selling Brand: R&P Carriages curated kit using RAM coupler CTA-400-Z and listed mounting hardware.

Application Reference: RAM and CTA-400-Z describe the included coupler component. Fitment depends on your trailer channel bracket, ball size, mounting holes, and installation requirements.

What This Means: This listing is for the CTA-400-Z-KIT, which includes one RAM CTA-400-Z coupler plus the listed 5/8" mounting hardware. It is not a channel bracket kit.

Before Ordering: Verify bracket compatibility, coupler rating requirements, 2-5/16" ball size, 5/8" mounting hardware needs, and included components before installation.

R&P Repair Insight

When replacing an adjustable coupler, do not assume the old hardware is reusable. Rust, thread wear, stretched bolts, damaged nuts, or mismatched washers can compromise the installation. This kit includes fresh mounting hardware for the coupler connection.

  • Bracket Check: Confirm your trailer has the correct adjustable channel bracket for the CTA-400-Z coupler.
  • Hardware Check: This kit uses 5/8"-11 mounting hardware with Grade 8 bolts and Grade 8 nylon insert lock nuts.
  • Final Check: Torque and inspect according to your trailer/coupler installation requirements before towing.

Features

Complete Coupler Hardware Kit

Includes the RAM CTA-400-Z coupler plus the listed Grade 8 mounting bolts, washers, and nylon insert lock nuts.

2-5/16" Ball Coupler

Coupler is designed for 2-5/16" trailer ball applications where the trailer setup matches the coupler and mounting configuration.

Zinc-Plated Coupler Finish

RAM CTA-400-Z coupler is listed with a zinc-plated finish for corrosion resistance in normal trailer service conditions.

Adjustable Channel Mount Design

Designed for adjustable channel mount installations; adjustable channel bracket is sold separately.

Specifications

Specification Detail
Kit SKU CTA-400-Z-KIT
Base Coupler RAM CTA-400-Z
Product Type Adjustable channel mount trailer coupler kit with hardware
Ball Size 2-5/16"
Mount Style Adjustable channel mount, 2-bolt mount
Finish Zinc plated coupler; yellow zinc mounting hardware
Hardware Size 5/8"-11 mounting hardware
Channel Bracket Sold separately

Fitment / Application

Category Details
Vehicle / System Trailer adjustable channel coupler system
Primary Fit Trailer applications requiring a RAM CTA-400-Z adjustable channel mount coupler with 2-5/16" ball size
Hardware Fit Includes 5/8"-11 Grade 8 mounting bolts, washers, and nylon insert lock nuts
Notes Verify channel bracket compatibility, ball size, coupler rating requirement, bolt fit, and installation requirements before ordering. Adjustable channel bracket is not included.

Included Components

Quantity Item
1 RAM CTA-400-Z adjustable channel mount trailer coupler, 2-5/16" ball, zinc plated
2 5/8"-11 x 4-3/4" Grade 8 yellow zinc finish hex cap screws / bolts
4 5/8" x 1.312" OD thru-hardened yellow zinc finish steel washers
2 5/8"-11 Grade 8 yellow zinc finish nylon insert lock nuts
Not included Adjustable channel bracket
Verify your trailer channel bracket, 2-5/16" ball requirement, coupler rating requirement, mounting hole fit, hardware fit, and installation requirements before use. This kit includes the RAM CTA-400-Z coupler and listed mounting hardware only; adjustable channel bracket is sold separately.
CTA-400-Z-KIT RAM adjustable channel mount coupler kit, RAM CTA-400-Z coupler with hardware, 2-5/16 trailer coupler kit, adjustable channel mount trailer coupler, zinc plated trailer coupler, 5/8 grade 8 coupler mounting hardware, trailer coupler bolts washers lock nuts, R&P Carriages coupler kit