SKU: 19201831189

1999 Honda ATV TRX300FW FOURTRAX 4X4 Cylinder Piston Top End Gasket Kit 12000-HC4-000 12251-HA0-004

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Description

1999 Honda ATV TRX300FW FOURTRAX 4X4 Cylinder Piston Top End Gasket Kit 12000-HC4-000 12251-HA0-0041988 2000 Honda TRX300 Fourtrax FW 4x4 2x4 Cylinder Piston Top End Gasket Kit Features: Kit includes cylinder, spark plugs, oil filter, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured). Cast piston has super high silicone content for additional strength. Piston skirts are Molybdenium Teflon coated to minimize resistance wear and provide extended life. Piston dome is anodized for superior heat resistance and longer

1988-2000 Honda TRX300 Fourtrax FW 4x4 2x4 Cylinder Piston Top End Gasket Kit

Features:
Kit includes cylinder, spark plugs, oil filter, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured).
Cast piston has super-high silicone content for additional strength.
Piston skirts are Molybdenium Teflon coated to minimize resistance/wear and provide extended life.
Piston dome is anodized for superior heat resistance and longer lifespan.
The gaskets use performance materials to increase durability and provide greater reliability.
Includes all gaskets pictured to rebuild top end.
Kit is for standard bore size - 74.00 mm.
All of the components within this kit are bolt-on ready for a hassle free installation.

Specifications:
Condition: Aftermarket 100% Brand New
Quantity: 1 Set
Cylinder Material: High-Grade Cast Aluminum
Piston Material: Forged Aluminum
Bore Size: STD 74.00mm
Spark Plug Dimension:
Thread Diameter: 12mm
Thread Length: 19mm
Electrode Gap:0.9mm

Replacement Part Number:
Cylinder: 12000-HC4-000, 12100-HC4-000
Cylinder head gasket: 12251-HA0-004
Cylinder base gasket: 12191-HC4-900
Cylinder o-ring(78.3x2mm): 91304-HA0-003
Valve tappet cover o-rings(57x3mm): 12392-HC4-005
Cylinder o-ring(33.7x2.4mm): 91305-HA0-680 (Sits Between Cylinder and Intake Manifold)
Intake pipe gasket: 18291-MN4-920
Valve stem seals: 12209-KL4-005
Oil filter: 15412-HM5-A10

FITMENT:
Fit for Honda TRX 300 2x4 & 4x4 FW four-wheelers 1988-2000
(This is for the Utility Model ATVs with the rack on the front and the back, NOT the race model ATVs)

Fit for 1988 Honda ATV TRX300 FOURTRAX 300
Fit for 1988 Honda ATV TRX300FW FOURTRAX 4X4
Fit for 1989 Honda ATV TRX300 FOURTRAX
Fit for 1989 Honda ATV TRX300FW FOURTRAX 4X4
Fit for 1990 Honda ATV TRX300
Fit for 1991 Honda ATV TRX300
Fit for 1991 Honda ATV TRX300FW
Fit for 1992 Honda ATV TRX300
Fit for 1992 Honda ATV TRX300FW
Fit for 1993 Honda ATV TRX300
Fit for 1993 Honda ATV TRX300FW
Fit for 1994 Honda ATV TRX300
Fit for 1994 Honda ATV TRX300FW
Fit for 1995 Honda ATV TRX300
Fit for 1995 Honda ATV TRX300FW 4X4
Fit for 1996 Honda ATV TRX300 FOURTRAX
Fit for 1996 Honda ATV TRX300FW FOURTRAX 4X4
Fit for 1997 Honda ATV TRX300
Fit for 1997 Honda ATV TRX300FW 4X4
Fit for 1998 Honda ATV TRX300
Fit for 1998 Honda ATV TRX300FW 4X4
Fit for 1999 Honda ATV TRX300 FOURTRAX
Fit for 1999 Honda ATV TRX300FW FOURTRAX 4X4
Fit for 2000 Honda ATV TRX300
Fit for 2000 Honda ATV TRX300FW 4X4

Package includes:
1x Cylinder
1x Standard Size Piston
1x Piston Ring Set
1x Wristpin
2x Circlips
1x Oil Filter
1x Cylinder Head Gasket
1x Cylinder Base Gasket
1x Exhaust Gasket
2x Valve Stem Seals
1x Exhaust Gasket
1x Cylinder O-ring(78.3x2mm)
2x Valve Tappet Cover C-rings(57x3mm)
1x Sits Between Cylinder and Intake Manifold O-ring(33.7x2.4mm)
1x Exhaust Pipe Gasket
2x Spark Plug

Note:
Ring end gaps are checked prior to shipment for proper sizing.
Please check out the product and size fits your motorcycle or not before you purchase.

Warranty:
Returns: Customers have the right to apply for a return within 60 days after the receipt of the product
24-Hour Expert Online: Solve your installation and product problems

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 19201831189

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4.1 ★★★★★
Based on 15 reviews
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geri
San Leandro, US
★★★★★ 5
Brush head stays put
I prefer to use this than the other ones. Other reviews says the brush head gets disconnected from the holder so far I didn’t have the same experience. I like the 360 brush head. It just takes time for my puppies to get used to it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
C
Verified Purchase
Customer help contact (925) 222-3186
Birmingham, US
★★★★★ 4
fine
Color: Macrobrush Kit
fair
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
L
Verified Purchase
Lauren
Chelsea, US
★★★★★ 5
Perfect Dog Toothbrush!!
Color: Macrobrush Kit, Color: Macrobrush Kit
As a pet momma of 7 animals, I make sure that all my babies are well taken care of. A lot of people forget about dental!! This toothbrush is so easy to use and has two heads so I can switch heads for my other dog. It has a great handle and I love that the bristles are 360 so they can clean every tooth!! Great for the price and functionalities!! I used it on my two pits and the size was perfect! I got the medium to large breed. The bristles are soft and it’s held up amazingly even with two pits!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2025
O
Verified Purchase
ocasio
West Palm Beach, US
★★★★★ 5
My favorite toothbrush for my fur babies!
Color: Pink (2-pack)
I think these brushes are the easiest way to brush your fur babies teeth. I can get into their mouths and really see in there and brush each tooth and make sure the tarter is off. They even assist by trying to bite the brush and I use toothpaste for dog and gently brush back and forth first the front teeth then the side teeth then the inside teeth and the top of the teeth then the inside of the bottom and top teeth and I end with the left inside top and bottom teeth. I use vanilla mint toothpaste for dogs because my dogs are allergic to proteins. Their teeth look so white and their vet comments that their teeth look so great and clean. She does want them of course to have their yearly cleaning but she said there is no rush because their teeth are so clean and she sees no dental disease. I make sure that I wash the brushes daily with soap and keep them open after use otherwise mold will grow on them if you shut them in the case they come in. My pups weigh 6 lbs and 7 lbs and are Maltese females. They cooperate fully with me brushing their teeth because I started when they were puppies and now they are one and two years old. These brushes are lightweight and not expensive at all. I usually buy several at a time to make sure I have clean ones on hand just like you would change a human toothbrush monthly. Each pup gets its own toothbrush and I label the case for each with a marker. I like these better than a regular toothbrush because it’s 360 degrees and the pup can chew on it without hurting themselves or the bristles coming off. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
A
Verified Purchase
akjruthies
Fort Morgan, US
★★★★★ 5
Dog Approved - Highly Preferred Over Standard Toothbrush
Color: Neon (4-pack)
These pet finger tooth brushes work well for me and my dog. He most definitely tolerates these so much more than a standard tooth brush. I believe I am able to reach more of his teeth and that I'm more effective brushing with these than I am with a standard brush. I put one on each of my index fingers. This makes it easier to do each side and the top and bottom without having to twist and turn to reach everything. The size is just right for my index fingers. They are a little tight getting them on and I have found that wetting my finger and the inside of the finger brush makes it a lot easier to put them on. The bristles on the finger brushes are soft, yet they are durable enough to give some good scrub quality and gum massage. These are a good price for what you get. I purchased the four-pack at right about $16.00. I have gotten numerous uses so far out of the two that I have been using. I will definitely purchase these again when it is time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025

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