21442 Carburetor With Air Filter & Cover For Toro GTS 150cc Lawn Mower

What It Is

This is a complete carburetor assembly with an integrated air filter and cover, designed specifically for Toro GTS 150cc engines (typically found in walk-behind mowers like the Recycler or Super Recycler series). It replaces the factory carburetor to restore fuel delivery, idle, and starting performance.

Fitment & Compatibility

Before buying, confirm your engine model—this fits Toro’s 150cc GTS (Guaranteed To Start) engines, not the 160cc, 190cc, or 200cc variants. Check your mower’s model number (under the seat or on the engine shroud) and cross-reference with Toro part numbers 21442 or 214-42. This is an aftermarket part, not OEM Toro, but it’s a direct bolt-on replacement for the original carburetor on most 2010–2020 Recycler and Super Recycler models with the GTS 150cc engine. Measure the mounting bolt spacing (typically 2.25 inches center-to-center) and the air filter housing diameter (about 3.5 inches) to avoid fitment surprises. It will not fit Honda, Briggs & Stratton, or Kawasaki engines.

Key Things to Know

• Quality vs. OEM: Expect slightly thinner plastic on the air filter cover and a less robust gasket. It works, but the OEM carburetor (often $50–$80) may last longer.
• Installation difficulty: Moderate. You’ll need a screwdriver and a small wrench. Drain the fuel tank and old carb first. The hardest part is seating the new gasket and adjusting the idle speed screw after install.
• Common gotchas: The included air filter may be slightly undersized—check it seals fully. Also, the fuel line fitting can be tight; warm the hose end with a hair dryer if it won’t slip on. Prime the carb by filling the float bowl with fuel before starting.
• Tuning required: After installation, you’ll likely need to adjust the idle mixture screw (turn 1.5 turns out from fully seated as a baseline) and set the idle speed to 3,000 RPM (warm engine).

Should You Buy It

If your Toro GTS 150cc mower is hard-starting, surging, or won’t run at all, and you’re comfortable with a DIY carb swap, this is a budget-friendly fix. It’s ideal for older mowers where OEM cost isn’t justified. But if you want maximum longevity or have a newer mower under warranty, stick with the genuine Toro part.