Carburetor for Cub Cadet SLT1554 GT1554 LT1050 Lawn Tractor, for Kohler CV730 CV740 25HP 27HP Engine with 25-158-11-S Throttle Linkage Bushing

What It Is

This is a complete aftermarket carburetor replacement for Cub Cadet SLT1554, GT1554, and LT1050 lawn tractors equipped with 25HP or 27HP Kohler Command Pro CV730 or CV740 engines. It includes the 25-158-11-S throttle linkage bushing, which is a common wear point on these engines.

Fitment & Compatibility

Before buying, confirm your tractor model number (e.g., SLT1554, GT1554, LT1050) and engine spec: Kohler CV730 or CV740, 25HP or 27HP. This carburetor replaces OEM part numbers (check your engine’s spec sheet) but is not a genuine Kohler part—expect minor fit variations. Measure the mounting flange bolt spacing (standard 2.5” center-to-center) and throttle cable travel length (typically 2.5–3”). If your throttle linkage has a worn bushing, this kit includes the 25-158-11-S replacement. Verify your air filter housing and fuel line diameter (3/16” or 1/4”) match the carburetor inlet.

Key Things to Know

• Quality: Aftermarket carburetor—may need minor adjustment to idle and mixture screws right out of the box. Expect some plastic components versus OEM metal.
• Installation Difficulty: Moderate. You’ll need to drain fuel, remove the air cleaner assembly, disconnect throttle/choke cables, and swap the carburetor. A gasket set is included, but check for any old gasket residue on the manifold.
• Common Gotchas: The supplied gaskets may not seal perfectly—use a thin layer of fuel-resistant sealant if you see leaks. The throttle linkage bushing (25-158-11-S) is prone to cracking; install it carefully to avoid binding. If the engine surges after install, clean the main jet or adjust the idle speed screw.
• Warranty: Typically 30-day limited return—test fit immediately and don’t force bolts.

Should You Buy It

This is a budget-friendly fix for a worn carburetor on a Kohler CV730/740 engine, especially if the throttle linkage bushing is already failing. It’s ideal for DIY owners who don’t want to pay $100+ for an OEM part and are comfortable with minor tuning. Skip it if you need drop-in perfection or a long-term heavy-use solution—consider an OEM Kohler carburetor instead.