Quick answer
The “best” mower carburetor is the one that matches your engine model and the part number on your old carb. For the most common push-mower engines: Briggs & Stratton 500-series and 300E–550EX engines use the 799583; older Briggs 122000/124000 Quantum-style engines use the 799868; Honda GCV160 mowers use a 16100-Z0L-023-type carb; and many Kohler Courage riding mowers use 20-853-series carbs. A genuine Briggs carb costs more but fits most reliably. Aftermarket kits are cheaper and often include a tune-up kit.
Before replacing the carburetor, rule out the usual suspects: stale fuel, a clogged fuel filter or line, a dirty air filter, or a stuck float bowl that a good cleaning fixes. If cleaning hasn’t worked, or the carb is plastic and warped, replacement is often cheaper than chasing gaskets and jets.
Step 1: Find your engine model number
Briggs & Stratton
Model, type and code are stamped on the engine shroud or valve cover, e.g. “09P702-0123-F1”. Briggs’ parts lookup gives the exact carb part number.
Honda
A label on the engine shows the model (e.g. GCV160LA) and the serial number on the crankcase.
Kohler
The model (e.g. SV600), specification and serial number are on a decal on the blower housing.
Many carburetors also have a part number cast or printed on the body. Matching it, or its superseding number, is the most reliable check.
| 1 |  | Briggs & Stratton 799583 GenuineBest for Briggs 500-Series Engines | Check price |
| 2 |  | Aylux 799583 Carburetor KitBest Budget for Briggs 500-Series | Check price |
| 3 |  | Briggs & Stratton 799868 GenuineBest for Older Briggs Push Mowers | Check price |
| 4 |  | Carbhub 799868 Carburetor KitBest Budget for Older Briggs | Check price |
| 5 |  | Ruixing GCV160 CarburetorBest for Honda GCV160 Mowers | Check price |
| 6 |  | Kohler Courage SV-Series Carburetor KitBest for Riding Mowers | Check price |
The best lawn mower carburetors by engine
1Briggs & Stratton 799583 GenuineBest for Briggs 500-Series Engines
The genuine Briggs carburetor used on many modern vertical-shaft push-mower engines (300E–550EX, 125cc and 140cc). It costs more than aftermarket copies but matches Briggs’ own spec.
- Type: genuine OEM
- Common fit: Briggs 500-series vertical engines (check your model)
- Replaces: older numbers such as 591160 (verify with Briggs lookup)
Best For: Owners who want guaranteed fit and quality.
Pros:
- OEM part
- Reliable fit
- Clean fuel metering
Cons:
- Pricier than copies
- No extras included
2Aylux 799583 Carburetor KitBest Budget for Briggs 500-Series
An aftermarket 799583-style carb listed to replace 593261, 595656, 591979, 591160 and 590556. It comes with an air filter, air cover, primer bulb, fuel shut-off valve, spark plug, fuel lines and clamps.
- Replaces: 799583, 593261, 595656, 591979, 591160, 590556
- Fits: B&S 300E, 450E, 500E, 550EX, 125/140cc
- Kit includes: carb, air filter + cover, primer bulb, plug, fuel lines
Best For: A budget fix plus tune-up for a common push mower.
Pros:
- Very cheap
- Full tune-up kit
- Wide fit list
Cons:
- Aftermarket quality varies
- May need minor adjustment
3Briggs & Stratton 799868 GenuineBest for Older Briggs Push Mowers
The genuine carb for most Briggs 124000-model engines. It replaces older numbers 498254, 497347, 497314, 498170, 497586 and 497410.
- Type: genuine OEM
- Fits: most Briggs 124000-model engines
- Replaces: 498254, 497347, 497314, 498170, 497586, 497410
Best For: Older 4–7 HP Briggs engines with the original carb.
Pros:
- OEM part
- Replaces many old numbers
- Reliable
Cons:
- More expensive than copies
4Carbhub 799868 Carburetor KitBest Budget for Older Briggs
An aftermarket 799868-style carb for 4–7 HP Briggs engines without a choke. It’s listed for 122000, 123000, 124000, 125000, 12G000 and 12J000-type engines and comes with a primer base, air-filter parts and a spark plug.
- Replaces: 799868, 498170, 497586, 498254, 497314, 497347
- Fits: many 12xxxx-series Briggs engines (no choke)
- Extras: primer base, air filter parts, spark plug
Best For: Cheap fixes on older Briggs push mowers.
Pros:
- Low cost
- Long fit list
- Extras included
Cons:
- Aftermarket tolerances
- Check the “no choke” note
5Ruixing GCV160 CarburetorBest for Honda GCV160 Mowers
A manual-choke carb for Honda GCV160 engines, listed to replace 16100-Z0L-023 and related numbers. It fits HRR216, HRS216, HRB216 and HRT216 mowers and includes a fuel line, filter, gaskets, two air filters and a spark plug. Check the engine serial range in the listing.
- Replaces: 16100-Z0L-023, 16100-ZM0-803/804 and others
- Fits: Honda GCV160 / GC160 engines
- Mowers: HRR216, HRS216, HRB216, HRT216
Best For: Honda HRR216 and similar push mowers.
Pros:
- Includes gaskets and filters
- Manual choke versions covered
- Cheap vs Honda OEM
Cons:
- Not for auto-choke GCV models
- Serial-number limits apply
6Kohler Courage SV-Series Carburetor KitBest for Riding Mowers
A replacement carb for Kohler Courage single-cylinder engines (SV470–SV620, 15–20 HP) found on many Cub Cadet, MTD, Troy-Bilt and Toro lawn tractors. The kit includes a fuel pump, air filter, pre-cleaner, oil filter and gaskets.
- Fits: Kohler Courage SV470–SV620
- Replaces: many 20-853-xx-S numbers
- Kit includes: carb, fuel pump, air + oil filters, gaskets
Best For: Lawn tractors with a single-cylinder Kohler Courage.
Pros:
- Big tune-up kit
- Wide tractor fit
- Much cheaper than OEM
Cons:
- Check the 20-853 number
- Aftermarket quality varies
Step 2: Replace the carburetor
Step 2a: Prepare
Shut off or clamp the fuel line, disconnect the spark plug wire and photograph the governor and throttle linkage before taking anything apart.
Step 2b: Swap the carb
Remove the air filter housing, unhook the linkages and fuel line, and unbolt the carb. Fit the new gaskets, reconnect the linkages exactly as in your photo, then reinstall the air filter.
Step 2c: Start with fresh fuel
Add fresh gasoline, open the fuel valve and check for leaks. Start the engine. If it surges or hunts, recheck the linkage before adjusting anything.
Frequently asked questions
Should I clean or replace my mower carburetor?
Clean it first if it’s metal and just gummed up. Replace it if it’s warped, corroded, cracked, or still fails after a thorough cleaning. Cheap plastic carbs often aren’t worth rebuilding.
Are aftermarket carburetors any good?
Many work fine, but quality varies. Genuine carbs cost more and fit more reliably. Aftermarket kits make sense for older or low-value mowers.
Why won’t my mower run after replacing the carb?
Check for a reversed governor or throttle link, a missing gasket, a blocked fuel line or tank vent, stale fuel and a bad spark plug.
Related: Briggs starts but won’t stay running · Adjusting a Kohler carburetor · Fixing Kohler surging
How we chose: This is a researched guide. We grouped carburetors by engine family and compared fitment, superseded part numbers and kit contents from current manufacturer and seller listings. We didn’t field-test these parts. Always confirm fit with your engine’s model number.
Update log: November 2026: rebuilt the guide. We organized the picks by engine, added genuine Briggs options, how to find your model number, replacement steps and an FAQ.