Carburetor Carb Replaces for 42" Ariens 936060 93606000 / A175G42 960160027 936046 960160021 (960160021-01) Riding Lawn Mower Tractor with Briggs Stratton 17.5 HP Engine 6-Speed

What It Is

This is an aftermarket carburetor assembly designed to replace the original on Ariens 42-inch riding mowers equipped with a Briggs & Stratton 17.5 HP engine (typically the 31C707 or 31P977 series). It handles fuel metering and air/fuel mixing for the engine.

Fitment & Compatibility

Before buying, verify these three things:

• Model numbers: This carb replaces Ariens OEM 936060, 93606000, 936046, and fits models A175G42, 960160027, 960160021, 960160021-01. Check your mower’s model tag (under seat or on frame).
• Engine specifics: Works with Briggs & Stratton 17.5 HP engines (typically 31C707 or 31P977). Confirm your engine model number (stamped on valve cover or blower housing).
• Deck size: Only for 42-inch deck models. 46-inch or 50-inch decks use different carburetors.
• Physical check: The carb has a single-barrel design with a plastic float bowl. Measure your old carb’s mounting flange (should be about 2.5 x 2.5 inches) and fuel inlet position (left side, 90-degree barb). Ensure the choke and throttle linkage holes align.

Key Things to Know

• Quality variance: Aftermarket carbs often need minor adjustment. Expect to tweak the idle mixture screw (turn out 1.5 turns from lightly seated as a starting point).
• Installation difficulty: Moderate. You’ll need to remove the old carb, transfer the fuel line and linkage, and sync the governor. Plan 45–90 minutes.
• Common gotchas: The gaskets included may be too thick—use the original gasket if the new one causes leaks. Also, the float bowl screw is soft; don’t overtighten.
• No choke cable adapter: This carb uses a manual choke lever, not a cable. If your mower has a cable choke (some Ariens models), you’ll need to adapt or buy a different carb.

Should You Buy It

This is a solid budget fix for a non-running or rough-idling Ariens 42-inch rider with a Briggs 17.5 HP engine—provided you’re comfortable with basic small-engine tuning. If you want a perfect drop-in with zero adjustment, spend more on an OEM Briggs carburetor. For the price, it’s worth a try if your old carb is gummed up and you don’t mind tweaking the mixture.