Engine Piston Set for Nissan Frontier, Pathfinder, and Xterra 4.0L V6 VQ40DE (2005–2019) — (Fits: Nissan)
The piston assembly for the Nissan VQ40DE engine features a standard bore of 95.50 mm (3.7598–3.7602 inches) and a compression height of approximately 31.60 mm. These pistons are constructed from aluminum alloy, featuring a dish-top design; the skirts are coated, while the crowns undergo an anodizing treatment. The piston rings typically utilize a 1.2–1.2–2.5 mm configuration, designed to accommodate a compression ratio of 10.0:1.
Description
Piston Assembly Specifications
Standard Bore: 95.50 mm (3.7598–3.7602 in) · Oversize Option: 0.50 mm (0.020 in) (Common Size)
Piston Skirt Diameter: 95.480–95.490 mm (3.7590–3.7594 in)
Compression Height: 31.60 mm
Piston Pin Diameter: 21.989–21.995 mm (0.8657–0.8659 in)
Piston Ring Dimensions: Top Ring (1.2 mm), Second Ring (1.2 mm), Oil Ring (2.5 mm)
Piston Ring End Gap (Top Ring): 0.23–0.33 mm (0.0091–0.0130 in)
Piston Ring End Gap (Second Ring): 0.33–0.48 mm (0.0130–0.0189 in)
Piston Ring End Gap (Oil Ring): 0.20–0.50 mm (0.0079–0.0197 in)
Material: ZL109 Cast Aluminum
Piston Type: Recessed Top
Connecting Rod Center Distance: 165.82–165.92 mm (6.5283–6.5323 in)
OE Part Numbers (Reference): 12010-EA200, 12010-EA206, 12010-9BP2C














