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

KOONDHEEND ACA-1804 Adjustable Shift Linkage Kit is a direct-fit replacement linkage assembly with a 6-foot stainless-steel cable and adjustable aluminum mount for many GM and aftermarket steering columns.

If you're replacing a worn column shifter link or fitting an aftermarket column to a GM transmission, this kit provides a long, flexible cable and an adjustable mount to reach short-shaft GM transmissions without extensive modification. It replaces LB01-ACA-1804 and works with a wide range of transmissions and 1.5"–2.25" columns, offering reversible mounting and pre-drilled mounting points to simplify installation.

Will this kit fit my GM transmission and column?

The ACA-1804 is made as a direct replacement for LB01-ACA-1804 and fits many common GM transmissions with short shafts, including THM200-4R, THM350, THM400, 4L60 and 4L80-E (short shaft versions). It’s compatible with aftermarket columns sized from 1.5" to 2.25" but not suitable for Powerglide or long-shaft 4L60E/4L80-E variations. Always check shaft length before ordering.

• Direct fit for ACA-1804/LB01-ACA-1804 models
• Compatible with THM200-4R, THM350, THM400, 4L60, 4L80-E (short shaft)
• Fits aftermarket and GM columns 1.5"–2.25" outer diameter
• Not compatible with Powerglide or long-shaft 4L60E/4L80-E

How difficult is installation for a backyard mechanic?

Installation is designed to be straightforward: the kit includes an adjustable aluminum mount, a reversible design for left- or right-side columns, and a 6-foot cable that routes around exhaust and brake hardware. KOONDHEEND supplies a step-by-step manual and online video resources to guide you; basic hand tools and familiarity with transmission linkage adjustments are all that’s required.

• Reversible mount fits left or right column locations
• 0.5" pre-drilled holes reduce drilling on most columns
• 6ft cable to route around exhaust and other obstacles
• Manual plus video tutorials available (search "ACA-1804 install")

What performance and durability can I expect?

The kit is built for repeatable shift accuracy and tested to exceed 2,000 cycles, indicating robust performance under regular use. Components include a stainless-steel flexible cable and an anodized aluminum mount engineered to resist corrosion and keep linkage travel consistent over time.

• 2000+ cycle-tested for consistent shifting
• 6ft stainless-steel cable for longevity and routing flexibility
• Aluminum mount resists corrosion and maintains alignment
• Works with BL-1400U safety switches for neutral-safety integration

What support and return options are available if it doesn’t fit?

KOONDHEEND offers a one-year replacement policy through Amazon Messages for immediate support, plus a free return if the kit is incompatible with your setup. Contact details and troubleshooting guidance are included with the product to help diagnose fitment or routing concerns quickly.

• Instant 1-year replacement via Amazon Messages
• Free returns if the part is incompatible
• Installation troubleshooting included in manual and video
• Compatible with common safety switch (BL-1400U) options

Who is this for: The KOONDHEEND ACA-1804 Adjustable Shift Linkage Kit is aimed at vehicle owners, restorers, and aftermarket installers who need a reliable column-to-transmission linkage for common GM short-shaft transmissions or are fitting aftermarket columns in classic cars, hot rods, or custom builds. Choose this kit if you want an adjustable, corrosion-resistant cable assembly with clear installation guidance and solid manufacturer support.