Piston: Specifications

Dimensional Specifications

Component Illustration:

Piston Clearance:
Nominal 0.025 - 0.045 mm

Measurements:
Dimension R 43 mm
Dimension A 3.45 mm
Dimension O 78.5
Dimension H 56.45 mm

Piston Diameter
Piston diameter is measured at right angles to the gudgeon pin holes, 16 mm from the bottom of the piston.

Important
New pistons are graphite coated, but the coating is not included in the measurement below.

Classification Codes
Standard
8 85.945 - 85.955 mm
99 85.955 - 85.965 mm
00 85.965 - 85.975 mm
01 85.975 - 85.985 mm
02 85.985 - 85.995 mm

Oversizes
7+0.5 86.435 - 86.445 mm
8+0.5 86.445 - 86.455 mm
9+0.5 86.455 - 86.465 mm
0+0.5 86.465 - 86.475 mm