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🏍️ Upgrade your Harley’s heartbeat with precision power!
The CV40 Carburetor Replacement is a direct-fit, high-precision 40mm carburetor designed for Harley Davidson Sportster, Softail, Dyna, FXR, and Touring models from 1988 to 2017. It comes with a full installation kit including multiple jets for fine-tuning fuel delivery, fuel lines, a filter, and spark plugs, ensuring a smooth, reliable upgrade backed by a one-year warranty.







| ASIN | B09QKY1QHJ |
| Best Sellers Rank | 105,716 in Automotive ( See Top 100 in Automotive ) 53 in Car Carburettor Rebuild Kits |
| Brand | Czsmbt |
| Brand Name | Czsmbt |
| Compatible with Vehicle Type | All Terrain Vehicle, Utility Terrain Vehicle, Quad, Motorcycle, Automobile |
| Customer Reviews | 4.4 out of 5 stars 483 Reviews |
| Flange Type | Bolt On |
| Flange type | Bolt On |
| Item Part Number | 27421-99C |
| Manufacturer | Czsmbt |
| Manufacturer Part Number | C917543z481 |
| Model Number | C917543z481 |
| OEM Equivalent Part Number | 27421-99A, 27421-99C, 27465-04, 27490-04 |
| OEM part number | 27421-99A, 27421-99C, 27465-04, 27490-04 |
| Part Interchange Info | replacement |
| Recommended Uses For Product | Motorcycle |
| Recommended uses for product | Motorcycle |
| Specific Uses For Product | Performance |
| Specific uses for product | Performance |
| Vehicle service type | All Terrain Vehicle, Utility Terrain Vehicle, Quad, Motorcycle, Automobile |
C**L
Shockingly good!
Was a bit sceptical about this carb being up to standard for such a low price. However, the carb arrived early by nearly a week. Fitted this morning and was pleased to find the range of jets included. Fitted the correct ones for my 80" 1340cc Evolution engine. Then swapped the cold start cable etc over. Super easy! The carb looks very well made and all the threads/fasteners were identical to the original HD carb. It runs superbly, idles well and crisp acceleration. Idle mixture screw set at 2.5 turns out from fully in. Look forward to spring 2025 to test properly and of course check plugs for mixture etc. Very impressive!
T**R
Fitted to Harley sport 883
Hi, took a risk buying this after reading some good reviews. After a brief spell riding this bike, it has remained in the garage for over 8 years!, doing nothing and always a next week project. This year I decided that I should kick myself up the ass and get it ready to sell. The old carburettor. Had stood with fuel and beyond cleaning. Verses a long time trying to clean this I plumbed for this. It took 3 weeks to arrive, but I had lots to do anyway, so that was ok. It arrived boxed and protected with bubble wrap. Also included were 3 spare slow jets varying, 3 main jets 180,190, 195. Fitted 170 main, 45 pilot. Also in box as on listing, spark plugs ( for bin, don't use !poor.) Fuel pipe and clips( poor- don't use) Having cleaned tank of old fuel, I set about removing old carb and fitting this, having watched U tube video of others doing this, which I would recommend. Having examined the carb in detail, I was surprised by it's quality for the money when compared to mega expensive OEM, even used. Some of the screws are very tight, so if you remove float bowl to change jets, make properly sure the bit fits absolutely properly, some people complain of stripping thm, do take precaution as your starter and you will be fine. Having got all electrics back up and working, fuel in tank I was ready to start after 9 yes. I wheeled the old girl out of the garage, got my wife to video counted to 3 and hit the indicator button instead of start, slightly red face. Choke the three brief start buttons! She fired😁 and ran. Turning off choke she spotted ABIT and had to put her back on choke, but will be fine . She was stage 1 tuned, so I've since changed to 180 main jet and yet to start her to see how she is. Just crap weather at moment. Save some time and and don't use the supplied fuel pipe it's crap and fold to easily, I refitted original one. I also fitted the original cable control from original carb as a better routed fit for cables All in all, I am happy and without this carb, the bike would be still on garage when I leave this world.😂😂. If you are no confident at doing this change it still a fair price for something that works. Don't expect premium quality but it is good value. Othewise get yourself a large bill and keep it totally original.
L**.
Excellent item.
Came with a variety of main and idle jets, fuel pipes and filters, even a couple of spark plugs. All for less than the price of a seal kit for the original. Set up and ran fine although yet to do any load tests due to icy weather. Recommend as a replacement or just to have as a spare on the shelf.
D**N
Cheap fix
Still have to do some tweaking set the Jets right and install bike started right away
P**O
CALIDAD
BUENA CALIDAD, PRECIO Y ENTREGA SIN PROBLEMAS Y RAPIDO
B**N
Better than stock
I haven’t left an Amazon review in a while, but this carburetor works better than the OEM ever did. Really woke up my 883.
A**A
Carburador repuesto Harley
Es muy completo. Lo compré para aprender a desmontar y montar!! Jejeje
M**N
HD sporster 1200 cc
Bra Pris. Fungerade riktigt bra, byte bara munstycken till rätt storlek, då jag har steg 1 ( luft o buller) Skruvade dit den, fungerade direkt. :). check !!
Trustpilot
1 month ago
3 weeks ago