VHM Top End Gasket Kit for YAMAHA YZ 144 2005-2021

On YAMAHA YZ 144 from 2005 to 2021, the VHM SK33104 top end gasket kit fits in place of the original part. As soon as the cylinder head or cylinder is removed, their gaskets must be replaced: crushed when tightened, they have taken the shape of the parts and will no longer seal. This kit groups under one part number the gaskets needed to reassemble the top end.

Specifications

• Brand: VHM
• Manufacturer part number: SK33104

When to replace it?

• Coolant or oil seeping at the head/cylinder or cylinder/crankcase joint.
• Coolant level dropping, bubbles in the radiator.
• Hissing or black marks where the exhaust leaves the cylinder.

At every piston change and every time the cylinder head or cylinder is removed, even for a simple inspection. Gaskets cost little compared with the work of stripping the engine.

Fitting tips

1. Clean the gasket faces without scratching them (plastic scraper, solvent): they must be clean, dry and free of burrs.
2. Fit the gaskets dry, without sealant, unless the workshop manual says otherwise.
3. Refit a base gasket of the same thickness as the old one, unless you are deliberately adjusting the squish.
4. Tighten the cylinder head in a criss-cross pattern, in several stages, up to the manufacturer's torque.
5. While it's apart, replace the spark plug and refill the coolant.
6. After break-in, check the torque with the engine cold and make sure there are no leaks.

Why VHM?

Founded in 1995, VHM specialises in racing engine parts for motocross, road racing and karting. The brand started out with cylinder heads featuring interchangeable combustion chambers, which became its speciality, and then developed crankshafts, connecting rods and gasket kits.

Spare parts and items to plan

• Piston : see the selection
• Piston rings : see the selection
• Spark plug : see the selection
• Coolant : LIQUI MOLY 1 L · TWIN AIR
• 2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063

Frequently asked questions

What does the kit contain?
Depends on the model. Compare with your original gaskets if in doubt.

Should I replace it along with the piston?
Yes: as soon as the cylinder head and cylinder are off, new gaskets go back on. It's the right time to fit a new piston kit and new rings if the engine has some hours on it.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
YAMAHA YZ 144 2021
YAMAHA YZ 144 2020
YAMAHA YZ 144 2019
YAMAHA YZ 144 2018
YAMAHA YZ 144 2017
YAMAHA YZ 144 2016
YAMAHA YZ 144 2015
YAMAHA YZ 144 2014
YAMAHA YZ 144 2013
YAMAHA YZ 144 2012
YAMAHA YZ 144 2011
YAMAHA YZ 144 2010
YAMAHA YZ 144 2009
YAMAHA YZ 144 2008
YAMAHA YZ 144 2007
YAMAHA YZ 144 2006
YAMAHA YZ 144 2005