Czsmbt CV40 Carburetor Replacement for Harley-Davidson Sportster 883/1200 — Complete DIY Kit with Jets & Choke Cable

The Czsmbt CV40 Carburetor Replacement is a drop-in aftermarket carb kit engineered to restore smooth throttle response and reliable fueling for Harley-Davidson Sportster, Dyna, FXR, Softail and Touring models from the late 1980s through the 2010s.

This CV40 assembly is supplied as a complete service kit so you can replace a worn OEM carburetor and finish the job without multiple trips to the parts counter. It ships with choke cable, spare jets, spark plugs, a brush set and a fuel filter to simplify installation and initial tuning. Fitment covers a long list of Harley part numbers, making it a straightforward solution for older bikes that need consistent idle, midrange pull and dependable throttle response.

Which Harley models and part numbers will this CV40 carburetor fit?

The kit is designed for many Harley-Davidson single- and twin-carbureted models from about 1988 through the mid-2010s. It lists compatibility with Sportster 883 and 1200 variants plus several Softail, Dyna/FXR and Touring applications. Check your current OEM part number against the replacement list before ordering.

• Sportster: 883 XL883/XLH883 (1988–2006) and 1200 XLH1200 (1988–2006)
• Softail (Heritage): model years through 2017
• Dyna & FXR: model years through 2016; Touring: model years through 2016
• Referenced OEM MPNs include 27031-95, 27035-92A, 27412-99, 27482-92 and many more

What’s included in the package and why it matters to a DIY mechanic?

Rather than supplying only the carb body, this kit arrives ready for installation and basic tuning. That reduces downtime and the need to source small consumables separately. The extra jets and tools let you adjust jetting to match altitude or aftermarket exhaust and intake changes.

• CV40 carburetor body and choke cable for direct hookup
• Two spark plugs and a cleaning brush set for starter service
• Fuel filter for clean fuel delivery and longer service life
• Three extra main jets (#180, #185, #190) and three pilot jets (#42, #45, #48)

How is the carburetor jetted and what tuning options are provided?

The assembly arrives with standard stock jetting and several alternates so you can tune precisely. Factory-equivalent stock sizes are provided, plus a selection of richer main and pilot jets for common tuning needs such as altitude compensation or modified exhaust/intake. Use the brushes and extra jets to clean, test, and refine fueling during install.

• Stock main jet size: #170; supplied extra mains: #180, #185, #190
• Stock slow/pilot jet size: #45; included pilots: #42, #45, #48
• Choke cable included for correct cold-start operation

What kind of support and warranty comes with this purchase?

This product includes a one-year service commitment. If you encounter fitment issues, defects, or are otherwise unsatisfied, the manufacturer provides a refund or replacement option within that period. Keep purchase records and photos of installation issues to speed support requests.

• One-year service coverage from date of purchase
• Refund or replacement available for qualifying problems
• Save receipts and photos to help claim support quickly

Who is this for: The Czsmbt CV40 Carburetor Replacement kit is aimed at motorcycle enthusiasts, home mechanics and restoration shops working on older Harley-Davidson Sportsters, Softails, Dynas/FXRs and Touring bikes that use CV40-style carburetors. It’s especially useful if you want a low-cost, full kit replacement with spare jets and basic service parts included, allowing you to tune for local conditions or mild performance upgrades without hunting for parts.