VINTCO top-end gasket kit for YAMAHA IT 400, IT 425, YZ 400 from 1979 to 1980

VINTCO offers this top-end gasket kit for YAMAHA IT 400, IT 425, YZ 400 from 1979 to 1980. The top end is the cylinder, piston and cylinder head. When they are taken apart, the gaskets sealing them are crushed and cannot be reused.

Why buy a complete kit?

The benefits:

• Every top-end gasket in one part number: nothing is forgotten at reassembly.
• Cheaper than buying the gaskets one by one.
• New gaskets guarantee compression and sealing against water, oil and gases.

Why choose VINTCO?

Vintco, the American vintage-bike specialist since the early 1990s, remanufactures engine parts to the original standard, with the OEM part numbers listed.

When should you replace the gaskets on your YAMAHA IT 400?

An oil or coolant leak, seepage around the cases or a loss of compression signal a tired gasket. Having the kit to hand means the bike is never stuck waiting for one missing gasket.

No manufacturer hour figure for this model. Cross-Mania guideline: compression check every 20 h in hard use and every 40 h for leisure.

Specifications and fitting tips

• Contents: Head Gasket, Base Gasket, Intake Gasket
• Bore: 85.00 mm - 86.50 mm
• Engine: 2-stroke
• Gaskets made with modern materials and processes for OEM-equal or better fit and performance
• Top end gasket kit with all essential gaskets for a straightforward top end rebuild

Cross-Mania tip: Clean the mating faces carefully without scratching them and tighten to the manufacturer's torque.

Also needed with this part

• Piston : WISECO
• 2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063
• Coolant : LIQUI MOLY 1 L · TWIN AIR

Compatibility

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

Fits:
YAMAHA IT 400 1979
YAMAHA IT 425 1980
YAMAHA YZ 400 1979