Parts for 1263020421B1 — Briggs & Stratton
We found 19 parts confirmed to fit the Briggs & Stratton 1263020421B1.
Compatibility table
Prices shown are an informational reference range only, not an offer or an Amazon price — RepairKitHub does not sell parts directly. Each part links to an Amazon search so you can compare current listings yourself.
Common failure areas on this model
The confirmed parts above group into a handful of failure areas. Here is what each points to and how to check it before you order anything.
General hardware and mounting parts
Symptom: A small mechanical or mounting part has failed, cracked, or gone missing.
Check: Compare the physical shape and mounting points to the original piece, and confirm the exact part number against your model plate before ordering.
Parts in this group on 126302-0421-B1: BS798653 (CARBURETOR A), 790631 (Briggs & Statton Lawn & Garden Equipment Engine Air Filter Base), 790287 (Briggs & Statton Lawn & Garden Equipment Engine Valve Push Rod), 791969 (Briggs & Stratton Ring Set-Std), 792007 (Briggs & Statton Carburetor), 792006 (Briggs & Statton Lawn & Garden Equipment Engine Carburetor Rebuild Kit), 694260 (Briggs & Statton Fuel Tank), 398188 (Briggs & Stratton Lawn & Garden Equipment Engine Carburetor Needle Valve), 691043 (Briggs & Statton Lawn & Garden Equipment Engine Spark Plug), 491588S (Briggs & Stratton Lawn & Garden Equipment Engine Air Filter), 791766 (Briggs & Stratton Lawn & Garden Equipment Engine Fuel Line, Red), 222698S (Briggs & Stratton Lawn & Garden Equipment Engine Flywheel Key).
Storage, trim and cosmetic hardware
Symptom: A cracked shelf, broken door bin, worn hinge, or missing trim piece -- cosmetic and storage wear rather than a functional breakdown.
Check: Match the physical dimensions and mounting tabs of the old part before ordering; these pieces are often model-specific even between visually similar models.
Parts in this group on 126302-0421-B1: 790632 (Briggs & Statton Lawn & Garden Equipment Engine Breather Tube), 699206 (Briggs & Stratton Screw), 699492 (Briggs & Statton Lawn & Garden Equipment Engine Screw), 799318 (Briggs & Statton Lawn & Garden Equipment Engine Screw), 699203 (Briggs & Stratton Lawn & Garden Equipment Engine Screw), 694261 (Briggs & Statton Fuel Tank Cap).
Drive system (belts, pulleys, motors)
Symptom: A drum or tub that won't turn, a burning-rubber smell, or a loud thump or squeal during a cycle.
Check: With power off, turn the drum or tub by hand -- resistance or grinding points to the motor or a bearing, and a cracked, glazed, or snapped belt is visible once the cabinet is open.
Parts in this group on 126302-0421-B1: 498144 (Briggs & Stratton Lawn & Garden Equipment Engine Recoil Starter Pulley).
Before you buy
Match 1263020421B1 exactly against the model and serial plate on the appliance itself before ordering anything — a single mismatched character can point to a different production run with different parts. Then check the part number printed or stamped on the part you are replacing against the part numbers in the table above; the printed number is the most reliable way to confirm fitment when a model has gone through multiple production runs. RepairKitHub does not sell parts directly — every part link above routes to an Amazon search for that part number so you can compare current listings and sellers yourself.
How to confirm this is your model
Check inside a door opening, on a back or side panel, or behind a removable panel or drawer for a label printed with the model and serial number. Match every character exactly, including letters and dashes at the end — appliance model numbers often have similar prefixes but different suffixes for different production runs.
Still not sure?
Use the model lookup tool to search by model or part number, or start from the symptom your appliance is showing.