



🛠️ Keep your Harley running smooth—because every ride deserves perfection.
The Fuel Check Valve Rebuild Kit is the industry's first and only solution designed to rebuild your fuel check valve using premium Dupont Viton O-rings, a solid brass nickel-plated valve, and a stainless steel spring. Compatible with over 20 Harley Davidson models (2001-2020), this compact, lightweight kit offers a cost-effective, durable alternative to full valve replacement, backed by strong customer satisfaction and proven reliability.
| ASIN | B009XIWRLA |
| Best Sellers Rank | #495,206 in Automotive ( See Top 100 in Automotive ) #351 in Powersports Fuel Lines |
| Brand | Fuel-Tool |
| Customer Reviews | 4.5 4.5 out of 5 stars (760) |
| Date First Available | November 23, 2012 |
| Exterior Finish | Painted |
| Inlet Connection Size | 0.5 Inches |
| Inlet Connection Type | Threaded |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.16 ounces |
| Item dimensions L x W x H | 5 x 3 x 0.5 inches |
| Item model number | MC-300 |
| Manufacturer | Fuel-Tool |
| Manufacturer Part Number | MC-300 |
| Material | 100% Fuel-Tool |
| Model | Fuel Tool MC-300 |
| Outlet Connection Size | 0.5 Inches |
| Outlet Connection Type | NPT |
| Product Dimensions | 5 x 3 x 0.5 inches |
| UPC | 857266003036 |
G**N
Fuel tools
Worked great on 2002 Fatboy. Buy the $100. Tool kit. It worked awesome. I keep it and an extra kit in my saddlebag. Won’t leave home without it. Learned my lesson. I couldn’t get the o-ring to fit like others have said. Got the tool kit and the o-ring fits perfectly. Just need the right tool for installation. Worth the money to me.
R**M
Works great
Solved my leaking gas line issue
B**T
Fit 2002 Roadking
Bought this back in 2017, fit 02 roadking. Now in 2025 still working great. Was not hard to install.
A**R
Close but not perfect
Bottom o-ring didn’t fit my bike. “02” Heritage. Don’t know the measurements on it but it was a little to big in diameter and a little to small in thickness. So if you order it for that year model be prepared to find a 10x14x2 mm. I bought a o-ring kit from Orileys
J**O
The perfect fix for your fuel leak.
Great product, fixes the issue. Do yourself a favor and buy the removal/installation tool. I didn't and it's a royal pain in the tail without it. While you can do it without the tool, send the $100 and get the tool, trust me, it will save you time, effort, and trouble.
A**D
Fixed fuel line leak
This kit fixed my leaking fuel line on my 2002 softail deuce efi tank outlet. Orings basically had to be dug out from the age. Make sure grooves have no residue before installing new ones. Used the Fuel Tool Installation kit. Did not have to remove or drain the tank. Took me about an hour to do this. Did the male side as well at the same time.
S**L
Right product, right price
If you don't want to pay the dealership costs and hassle to replace your check valve for this common Harley problem this is the right product for you. Don't feel like you have to buy the $100 install tool too though. I did it without but I did have to remove my tank and turn it upside down to be able to get it to work. Also need a dental pick or something else to get the old O rings out. Very pleased overall.
T**L
REALLY NOT WORTH IT
So all those reviews you've read that warn you not to do this? YOU SHOULD REALLY FOLLOW THAT ADVICE! YOU THINK that this kit will save you money? IT REALLY DOESN'T LEARN FROM MY MISTAKES!!! So it's been a LOT of years since I turned wrenches as a pro! Anyone hiring? I'm remembering once again why I burned out as a nurse!! At least steel doesn't cause you 9 kinds of hell!!! I was BMW cert anyway, non cert HD. Plus last bike was a carbed Fat Boy and now I'm on an 04 Dyna LR w/ EFI. A FEW THINGS YOU NEED TO KNOW FIRST...you can buy at a MAJOR retailer (and yes their shipping fees suck!) a BRAND NEW CHECK VALVE with the submerged FUEL HOSE that connects to your pump for roughly twice the cost of this kit. While this turned into a bit of an adventure and made me remember why I SO ENJOY turning wrenches, I REALLY WISH I would have realized a few things UP FRONT! BEFORE YOU EVEN TOUCH YOUR CHECK VALVE, YOU MUST OPEN YOUR TANK (by removing your instrument bezel/panel) AND DISCONNECT the high pressure fuel hose from the pump, OK? BECAUSE if you just jump ahead and try to remove the check valve without d/c the fuel hose inside the tank, you will SEVER the fuel line (ESP IF IT'S AN OLDER MODEL!!! The hoses get BRITTLE!!!) IF YOU STILL INSIST ON CONTINUING LIKE I DID (I STRONGLY RECOMMEND YOU DON'T). Once you have the submerged hose d/c, and you remove your check valve, DO NOT REMOVE THE SNAP RING THAT HOLDS YOUR TINY 2 mm (I think) bearings in place that are solely responsible for HOLDING YOUR QUICK DISCONNECT IN PLACE. IT WILL NOT HELP YOU OUT AT ALL FOR ANY OF THE REBUILD!!! WHY? Because if you remove that snap ring and start digging out the old O-rings, those teeny tiny little suckers will POP RIGHT OUT!!!! SO DON'T TAKE THAT APART!!! THE NEXT ISSUE IS ONCE YOU HAVE THE NEW SPRING & actual valve back in place, you have to use the smaller O-ring to hold that tiny assembly in place. THAT IS THE SUPER EASY PART!!! IT IS THE DAD-GUM LOWER O-RING THAT WILL GIVE YOU NIGHTMARES! OK, well maybe that's is a bit dramatic! BUT, IT WILL I ASSURE YOU CAUSE YOU AT LEAST A HEADACHE TO SEAT THAT LOWER O-RING! There is a tool you can buy just for that but it will run anywhere from $60 to $100! So even if you run a shop, it is STILL WAY CHEAPER to get on one of those giant bike parts dealers (mine was the one with the "&" in it) and buy a new valve WITH A BRAND NEW HOSE AND CONNECTOR (to the pump). THE CHANCES OF YOU DOING THIS IN A SHOP AS A PRO ARE SLIM TO NONE! SERIOUSLY!!! So paying for the tool seems foolhardy unless you have tons o' money to burn! You can simply pay appx $30 (plus shipping) and save yourself SO MUCH TIME AND HASSLE!!! You will still have to remove the instrument strip and disconnect that fuel line no matter WHAT YOU DO!!! Did I mention that lower O-ring? OMG! LISTEN TO ALL OF US TELLING YOU THAT YOU SHOULD JUST GET THAT NEW CHECK VALVE WITH THE ATTACHED HOSE!!! OH and if you do accidentally sever that fuel line? GOOD LUCK GETTING IT BACK ON THE VALVE STEM!!! You will have to heat the hose to make it happen. GASOLINE people!
オ**ラ
早速、交換しましたが、ガソリン漏れます。 最悪です、高いのに意味ないやん、 最悪
G**Z
Un poco Carito pero asé su jale
V**R
Super halt alles geklappt
K**N
Great service
R**L
Quedo bien pero no he probado ya encendida si tira o no
Trustpilot
4 days ago
3 weeks ago