Bellhousing Adapter Kits

Each bellhousing adapter kit includes everything you need for a smooth installation—screws, bolts, transmission adapter plates, connectors, and more. With all essential components in one package, you can save time sourcing individual parts and focus on completing your build.

For over 50 years, Advance Adapters has been the trusted name in high-quality adapters and conversion kits. Our products are the top choice in the powertrain and 4WD aftermarket, known for precision engineering and long-lasting performance.

We offer kits specifically designed to fit seamlessly into popular vehicles, including Chevy and Dodge trucks, Jeeps, and more. By choosing Advance Adapters, you’re ensuring the easiest, most reliable installation possible—whether you’re restoring, repairing, or upgrading your drivetrain.

Frequently Asked Questions

What engine does a 1990 Geo Tracker have?

The 1990 Chevy Geo Tracker was powered by a 1.6L G16 inline-four engine with a single overhead cam design. Part of the Suzuki G series, this engine produced up to 80 horsepower and provided dependable performance for compact off-road driving.

Transmission options included a five-speed manual, the three-speed GM TH180 automatic, and the four-speed Aisin 03-72LE automatic. From 1989 through 1995, all North American Geo Trackers ran on the G16 engine. In 1996, the Tracker upgraded to the Suzuki 1.6L G16B, a 16-valve inline-four that increased output to 96 horsepower for improved power and drivability.

If you’re restoring or upgrading your Geo Tracker drivetrain, Advance Adapters offers adapter kits, transmission retrofit parts, and bellhousing adapters designed for a perfect fit.

How reliable is a 1990 Geo Tracker?

The 1990 Geo Tracker has earned a reputation as a dependable mini SUV when owners keep up with regular maintenance. Its compact 1.6L engine is easy to work on, delivers solid fuel economy, and can last for many years. However, common issues like worn front crankshaft and valve seals often lead to oil leaks, and the factory power and torque are fairly limited by modern standards.

For drivers looking to get more performance out of their Tracker, swapping in a new motor or transmission can unlock its potential. With the right bellhousing adapter kit, such as a 1990 Geo Tracker K24 bellhousing adapter, you can pair a stronger engine with the Tracker’s lightweight frame. This allows you to better leverage its high ground clearance, compact size, and excellent off-road maneuverability.

Advance Adapters offers precision-engineered solutions to make these conversions clean, reliable, and trail-ready.

Other known issues with the 1990 Geo Tracker include:

• High levels of wear on the front brake rotors and front struts.
• Problems with the fuel pump when the vehicle sits for months.
• Clutch cable breakage and other clutch pedal issues.
• There are periodic electrical glitches and failures.
• Owners must flush the transmission and brake fluid more frequently than other SUVs.

Is the K24 engine compatible with the 1990 Geo Tracker bellhousing?

You can connect a Honda K24 engine to your transmission with the proper 1990 Geo Tracker K24 bellhousing adapter. This adapter makes it possible to mate the modern K24 powerplant with your Tracker’s drivetrain, creating a much stronger and more capable setup compared to stock.

However, it’s important to note that the factory Geo Tracker transmissions were designed for the original G16 and G16B engines, which produced far less horsepower and torque. The K24 delivers significantly more power, and the stock gearboxes may not reliably handle the added stress. For a long-lasting upgrade, many builders pair the K24 swap with a stronger transmission and the appropriate conversion hardware.

Advance Adapters provides the bellhousing adapters, retrofit kits, and drivetrain components you need to complete this upgrade cleanly and safely.

What transmission can I use with a K24 swap in a 1990 Geo Tracker?

When upgrading your Tracker with a Honda K24 engine, many builders choose a six-speed manual transmission sourced from a Honda Civic or Accord K-Series. Because this transmission was originally engineered for the K24, it’s already capable of handling the added horsepower and torque that the swap delivers.

Better yet, the K-Series six-speed can integrate with the 1990 Geo Tracker drivetrain and frame configuration with only minimal modifications. By pairing the transmission with the right K24 bellhousing adapter kit, you can create a reliable, high-performance setup that maximizes the Tracker’s off-road maneuverability and durability.

Advance Adapters supplies the conversion components you need to ensure the swap is strong, safe, and built to last.

Do I need a custom clutch and flywheel for a K24 swap in a Geo Tracker?

Just as upgrading to a stronger transmission is recommended during a K24 engine swap, adding a custom clutch and flywheel is also essential to handle the increased torque. Without these upgrades, the factory setup may wear prematurely and is more likely to slip under heavy loads.

To properly connect the Honda K24 engine to your transmission, you’ll need a clutch and flywheel designed to match both the transmission bellhousing and the five-bolt pattern on the K24 crankshaft. This ensures smooth power transfer, reliable engagement, and the durability required for off-road driving and long-term use.

Pairing a reinforced clutch and flywheel with the correct 1990 Geo Tracker K24 bellhousing adapter kit creates a balanced, high-performance drivetrain that can handle the added horsepower with confidence.