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SKU:
NLT1Q00729
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Carburetor for Kohler CH20, CH620 and CH640 18–22 HP – Replaces 24 853 181-S
$57.99
In Stock
$57.99
Sale price
$57.99
Regular price
New aftermarket carburetor for select Kohler Command CH20, CH620, and CH640 18–22 HP engines; cross-reference 24 853 181-S and 24 853 178-S before ordering.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Kohler Command CH20 engine
- Kohler Command CH620 engine
- Kohler Command CH640 engine
- Select 18–22 HP Kohler Command twin-cylinder applications
Product Overview
A Command twin that surges, starves under load, floods, or will not come off choke may need carburetor service after the fuel pump, shutoff solenoid, intake seals, and ignition are checked. This assembly replaces a carburetor that is too corroded or worn for a dependable rebuild.
Kohler specification numbers determine fitment. Compare the complete engine model/spec, throttle and choke plates, fuel-solenoid connection, and mounting pattern.
Key Features & Performance
- For select Kohler Command twin-cylinder engines
- Covers CH20, CH620, and CH640 applications
- Cross-reference for 24 853 181-S and 24 853 178-S
- Restores controlled fuel metering through idle and working load
Replaces Part Numbers
- 24 853 181-S
- 24 853 178-S
Common Uses
- Correcting surging after intake leaks are ruled out
- Replacing a stuck or leaking carburetor after storage
- Restoring engine response under mower or equipment load
Technical Specifications
- Product Type: Twin-cylinder engine carburetor
- Engine Family: Kohler Command
- Rated Application: Select 18–22 HP engines
- Condition: New
- Replacement Type: Aftermarket
Installation & Fitment
- Use the Kohler model and specification number for fitment
- Compare the fuel solenoid, linkage, and mounting flange
- Inspect the pulse fuel pump and intake seals
- Run outdoors, check for leaks, and verify governed speed
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Production date, engine type, transmission, trim, serial number, and previous repairs can change fitment. Compare the original part, mounting points, dimensions, connections, and listed reference numbers before purchase.
Frequently Asked Questions
Q: Are 24 853 181-S and 24 853 178-S engine models? A: No. They are carburetor reference numbers; CH20, CH620, and CH640 are engine models.
Q: Can a failed fuel pump look like a carburetor problem? A: Yes. Test fuel delivery and the tank vent before replacement.
Q: Will this fit every CH640? A: No. Kohler specification and serial information can change the carburetor used.
Q: What should I do with old fuel? A: Drain it safely, clean contamination from the tank and lines, and use fresh fuel before starting the new carburetor.
Part Summary
keywords: Kohler CH20 carburetor, CH620 carburetor replacement, CH640 carburetor, 24 853 181-S replacement, 24 853 178-S carburetor
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.