Explorer Sport Trac 4WD V8-4.6L VIN 8 (2007)
2. NOTE: For precision fit, new pistons are divided into 3 categories (grade sizes). A paint spot on the new pistons indicates the grade size. Choose
the piston with the correct paint color after measuring the cylinder bore diameter.
Choose the piston with the correct paint color.
Piston Ring End Gap
Piston Ring End Gap
CAUTION: Use care when fitting piston rings to avoid possible damage to the piston ring or the cylinder bore.
CAUTION: Piston rings should not be transferred from one piston to another.
NOTE: Cylinder bore must be within specification for taper and out-of-round.
1. Use a piston without rings to push a piston ring in a cylinder to the bottom of ring travel.
2. Use a feeler gauge to measure the top piston ring end gap and the second piston ring end gap.
