Koubliztic Carburetor Kit for Bolens 21" 140cc Lawn Mower (11A-020W765) — Direct-Fit Replacement with Primer Bulb & Filters

High-quality replacement carburetor kit for Bolens 21" 140cc mowers (models 11A-020W765 / 11A-B0BL765) that restores fuel delivery and simplifies engine rebuilds.

This Koubliztic carburetor assembly is engineered as a direct-fit replacement for a wide range of Bolens lawn mower part numbers, delivering reliable fuel metering and an easy install experience. Built from durable materials and factory-tested for consistent operation, the kit bundles all commonly replaced components—carburetor, filters, primer bulb, hoses and clamps—so you can fix a stubborn or poorly running engine without sourcing multiple parts.

Will this carburetor fit my Bolens 21" 140cc mower?

Yes — the 11A-020W765 / 11A-B0BL765 carburetor is designed to match the mounting, linkage, and fuel connections used by many Bolens 140cc models. Review the compatible part numbers list to confirm your exact replacement match before ordering.

• Direct replacement for part numbers: 799583, 593261, 595656, 591979, 591160, 590556, 799579.
• Compatible with a wide set of OEM reference codes (08P502-, 09P602-, 09P702- series).
• Designed for Bolens 21" 140cc mower configurations with matching intake and throttle linkages.

What comes in the Koubliztic carburetor kit and why does it matter?

The kit includes the carburetor plus every small part commonly replaced during a carb rebuild, saving time and avoiding parts hunting. Having matched components helps eliminate leaks, improper seals, and fitment frustration during installation.

• 1 x 799583 carburetor and 1 x spark plug for ignition maintenance.
• Air filters, air filter cover, and base for proper air intake protection.
• Primer bulb, fuel filter, fuel shutoff valve, hoses, clamps and rings to secure fuel flow.

How difficult is installation and what tools are needed?

Installation is straightforward for basic DIYers and small-engine hobbyists; many users complete the swap in 5–10 minutes following online video guides. Standard hand tools and a clean workspace are typically all that’s required.

• Common tools: screwdrivers, pliers, socket set for mounting bolts and clamps.
• No specialized bench equipment needed—carburetor arrives pre-assembled.
• Online installation videos and step-by-step guides make the process accessible.

How does this replacement support long-term mower performance?

A properly functioning carburetor improves fuel atomization and consistent idling, reducing hard starts and rough running. Using factory-tested materials and matching seals decreases the chance of leaks and premature wear, extending engine life when combined with routine maintenance.

• Factory testing helps ensure consistent fuel flow and reliable engine starts.
• Included filters and fuel shutoff valve protect the carburetor from contaminants.
• High-quality materials and clamps secure connections to prevent fuel drips and air leaks.

Who is this for: The Koubliztic 11A-020W765 carburetor kit is ideal for homeowners and small-engine technicians who own or service Bolens 21" 140cc lawn mowers and need a complete, direct-fit replacement. It suits anyone looking to restore proper engine performance without sourcing individual parts—especially those who prefer a single, tested kit that includes filters, primer, hoses and clamps for a clean, quick installation.