| Part Type | Honda GX Series Models | Compatible Briggs & Stratton Engines | Comments |
| Air Filters | GX120, GX160, GX200 | 550E, 575EX, 600E, 625EX, 650EX, 675EX, 700 Series | Filters for small engines typically fit across brands with minor modifications. |
| Carburetors | GX160, GX200 | 500E, 550E, 600E, 625EX, 650EX | Carburetors often cross-apply, but jetting or mounting configuration may differ slightly. |
| Spark Plugs | GX160, GX200, GX240, GX270, GX390 | 450E, 500E, 675EXi, 800 Series | Most small engines use common spark plugs (NGK or Champion), but cross-referencing part numbers is key. |
| Fuel Tanks | GX160, GX200 | 500E, 550E, 600E, 625EX | Fuel tanks may vary by size, but many aftermarket tanks offer flexibility between these models. |
| Recoil Starter Assemblies | GX160, GX200, GX240, GX270, GX340, GX390 | 450E, 500E, 675EXi, 800 Series | Starter assemblies can be adapted between many Honda GX and Briggs & Stratton small engine models. |
| Oil Filters | GX240, GX270, GX340, GX390 | 2100, 3100, 4000 Series | Oil filters are usually standardized, especially for mid-sized to larger small engines. |
| Mufflers/Exhaust | GX160, GX200 | 550EX, 600E, 675EX, 700 Series | Exhaust systems may require slight adjustments but can often be cross-installed between similar models. |
| Pistons & Rings | GX160, GX200, GX270, GX390 | 500E, 550EX, 675 Series | Piston and ring sizes vary slightly, so cross-checking exact part numbers is essential for compatibility. |
| Ignition Coils | GX120, GX160, GX200, GX240 | 450E, 500E, 675EXi, 700 Series | Many ignition coils work interchangeably with minimal modifications for wiring and mounting. |