MANLEY/TOTAL SEAL Premium Steel Piston Rings [Bore Size 3.700 | File Fit | Ring Widths 1.5mm x 1.5mm x 3mm | Oil Ring Tension 9-13 lbs.] (FORD 4.6L & 5.4L MOD) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS