ATHENA Complete Engine Gasket Kit without oil seals for YAMAHA XT 660 1991-1997

On YAMAHA XT 660 from 1991 to 1997, the ATHENA P400485850660/1 complete engine gasket kit fits in place of the original part. A full engine rebuild calls for new gaskets wherever parts have been separated. This kit saves you ordering gaskets one by one and makes sure the engine goes back together perfectly sealed.

Specifications

• Brand: ATHENA
• Manufacturer part number: P400485850660/1
• EAN code: 8051764547623
• Weight: 220 g
• Engine: 4-stroke

When to replace it?

• Oil seeping at the crankcase or cover joints.
• Coolant or oil leak after the engine has been apart.
• Gaskets hardened, torn or stuck to the parts on disassembly.

During a complete engine rebuild (connecting rod, crankshaft bearings, gearbox) or whenever the crankcases are split.

Fitting tips

1. Clean all the gasket faces without scratching them and remove any remains of old gaskets.
2. Fit the gaskets dry, except where the workshop manual specifies sealant.
3. Replace the O-rings at the same time: a crushed O-ring can't be reused.
4. With the cases split, also replace the crankshaft bearings and oil seals and check the gearbox bearings.
5. Tighten the crankcases and covers in a criss-cross pattern to the manufacturer's torque, then fill up with oil and coolant.

Why ATHENA?

Founded in 1973 near Vicenza, Athena is an Italian engine gasket specialist that has made its gaskets on its own production lines since day one, as well as a renowned manufacturer of pistons and cylinder kits. The brand supplies original equipment to manufacturers such as KTM, Ducati, Fantic, Piaggio and Triumph, and is a partner of the MXGP motocross world championship.

Spare parts and items to plan

• Crankshaft bearings and seals : see the selection
• Engine oil seals : see the selection
• Gearbox bearings : see the selection
• 4-stroke engine oil : LIQUI MOLY 10W40 1 L · MOTUL 10W50
• Coolant : LIQUI MOLY 1 L · TWIN AIR
• Spark plug : see the selection

Frequently asked questions

Are the oil seals included?
No: this kit does not include the engine oil seals; order them separately if needed (engine oil seal kit).

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

Compatibility

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

Fits:
YAMAHA XT 660 1997
YAMAHA XT 660 1996
YAMAHA XT 660 1995
YAMAHA XT 660 1994
YAMAHA XT 660 1993
YAMAHA XT 660 1992
YAMAHA XT 660 1991