Hipa Carburetor for Briggs & Stratton V-Twin Engines 20–25HP — 407777 Direct-Fit Repair Kit with Filters & Rebuild Set

Hipa 407777 carburetor kit is a direct-fit replacement designed to restore fuel delivery for Briggs & Stratton 20–25HP 4-cycle V-twin engines used on lawn tractors and mowers.

This aftermarket carburetor assembly arrives as a complete service kit to help you replace worn or damaged fuel components without hunting for separate parts. It’s engineered to match the mounting pattern and fuel/solenoid orientation for many Briggs & Stratton 400000 and 440000 series engines and a range of common lawn tractor models, and the package includes filters, spark plugs and a rebuild set so you can finish one repair in a single visit to the garage.

Which engine and mower models will this carburetor work with?

The Hipa 407777 is built to fit multiple Briggs & Stratton V-twin engines rated around 20–25 horsepower and many tractor model lines. It’s compatible with several factory part numbers and popular lawn tractor models from major brands, making it a versatile replacement option.

• Compatible with Briggs & Stratton 400000 & 440000 series V-twin engines (20–25 HP)
• Fits OEM part numbers including 407777, 405777, 406777, 446677, 796227 and related variants
• Used on John Deere LA120/LA130/LA135 and similar yard tractors plus many Scotts, Sabre, Craftsman and Yard-Man models

What comes in the Hipa replacement carburetor kit?

The kit bundles the carburetor with consumable parts you’ll commonly replace during a carburetor repair, so you save time sourcing components. Everything is sized and selected for a full service rebuild of the fuel delivery system on applicable V-twin engines.

• One Hipa 407777 carburetor body designed for direct bolt-on installation
• One 499486S air filter, two spark plugs, two fuel filters and one pre-filter
• One rebuild kit with gaskets and seals to renew carbs and prevent leaks

How do I confirm fit and installation orientation before I buy?

Verify your engine’s part number and the solenoid position before installation; the solenoid must be on the left side for correct fitment. Compare your old carburetor’s mounting holes, throttle linkage, and fuel inlet location to ensure compatibility.

• Check your engine serial/model and OEM carburetor part number against the listed compatible numbers
• Confirm solenoid valve is located on the left side of the carburetor body
• Match throttle and choke linkage patterns and fuel line fittings before installing

What should I expect during and after installation?

Installation follows standard small-engine carburetor replacement steps: remove the old carburetor, transfer linkage as needed, fit new gaskets, and reconnect fuel and controls. After install, allow the engine to run and adjust idle/mixture if required to achieve smooth idle and steady throttle response.

• Perform a bench comparison and transfer any needed linkage or sensors
• Use included gaskets and new fuel filters to minimize leaks and contamination
• Test run and fine-tune idle and mixture settings for reliable performance

Who is this for: This carburetor kit is aimed at home mechanics, lawn tractor owners, and maintenance professionals who need a complete, cost-effective replacement for worn or damaged carburetors on 20–25HP Briggs & Stratton V-twin engines. If you maintain John Deere LA/XT series mowers, Scotts or Sabre tractors, or similar garden equipment and want a single-purchase repair solution that includes filters and rebuild parts, this Hipa kit provides the parts necessary to complete the job without multiple orders.