KOONDHEEND Adjustable Shift Linkage Kit for GM Transmissions — ACA-1804 6 ft Stainless Cable, Aluminium Mount

The KOONDHEEND ACA-1804 is an adjustable aftermarket shift linkage kit that replaces LB01-ACA-1804 to deliver precise, reversible column-to-transmission shifting for many GM manual and automatic installations.

This kit combines a 6-foot stainless steel cable, an anodized aluminum mount, and hardware to adapt 1.5"–2.25" steering columns to several THM-series transmissions. It’s designed for use where factory linkages don’t fit or when building custom column-shift setups for THM200, THM350, THM400 and the short-shaft variants of 4L60/4L80-E. The package includes a written manual and links to video guidance for a smoother install.

Will the ACA-1804 replace my current LB01 or factory linkage?

Yes — the ACA-1804 is a direct replacement for LB01-ACA-1804 and intended as a drop-in solution in many aftermarket and GM columns. It’s made to match common mounting points and restore accurate gear selection where original parts are worn or incompatible.

• Direct fit for LB01-ACA-1804 replacements
• Compatible with 1.5"–2.25" columns without major modification
• Includes hardware sized for common GM mounting locations
• Not compatible with Powerglide or long-shaft 4L60E/4L80-E

What transmissions and columns does this kit work with?

The assembly is tailored to THM200-4R, THM350, THM400 and short-shaft 4L60/4L80-E transmissions and to a wide range of aftermarket or GM columns within the 1.5"–2.25" diameter range. It won’t fit long-shaft 4L60E/4L80-E or Powerglide applications.

• Supported transmissions: THM200-4R, THM350, THM400, short-shaft 4L60/4L80-E
• Column diameter: fits 1.5"–2.25" aftermarket and GM-style columns
• Reversible for left- or right-side column routing
• Pre-drilled 0.5" holes minimize drilling on most installations

How is the ACA-1804 installed in tight or custom engine bays?

The kit’s 6-foot stainless steel cable gives plenty of length to route around exhaust, brake lines, and chassis obstructions. Its reversible mounting and flexible routing allow installers to choose the cleanest path without sacrificing shifting precision.

• 6 ft cable allows routing around obstacles and frame members
• Reversible design supports left- or right-hand installations
• Clearances and bend radius reduce cable binding in tight bays
• Step-by-step manual plus online video tutorials available

What durability and customer support should I expect?

The assembly is tested through more than 2,000 shift cycles to maintain accuracy and consistent feel. KOONDHEEND backs the product with a one-year replacement policy and offers free returns if the part is incompatible with your setup.

• 2000+ cycle testing for reliable shift performance
• 1-year instant replacement via Amazon Messages
• Free return if the kit does not fit your vehicle
• Pairs with BL-1400U safety switches for neutral-safety integration

Who is this for: The KOONDHEEND ACA-1804 is aimed at hobbyists, restoration builders, and professional installers who need an adjustable, durable column-to-transmission linkage for THM-series and short-shaft 4L60/4L80-E setups. Choose this kit when you want a direct LB01-ACA-1804 replacement or a flexible routing option for tight engine bays, and avoid it for Powerglide or long-shaft 4L60E/4L80-E applications.