4GR-FSE Lexus Piston Set — For Toyota 2.5L

Piston Set for Toyota 4GR-FSE (Crown, Mark X) and Lexus IS250 2.5

The Toyota 4GR-FSE/4GR-E30 STD (Standard) piston assembly is specifically designed for 2.5L engines, featuring a cylinder bore of 83.00 mm, and is typically manufactured from ZL109 aluminum alloy. This assembly is engineered to accommodate a compression ratio of 12.0:1 and utilizes a three-ring piston configuration; the respective heights of the piston rings are typically 1.2 mm (top ring), 1.2 mm (second ring), and 2.0 mm (oil ring).

Description

4GR Standard (STD) Piston Assembly Key Specifications:
Bore Diameter: 83.00 mm (Standard).
Applicable Engine Models: 4GR-FSE (Direct Injection), 4GR-E30.
Piston Material: ZL109 Aluminum Alloy.
Piston Ring Dimensions: 1.2 mm / 1.2 mm / 2.0 mm.
Compression Ratio: 12.0:1.
OEM Compatible Part Numbers: 13011-31220, 13011-31260, 13011-31270, 13301-31020.
Piston Skirt Coating: Typically features a Moly (Molybdenum Disulfide) coating to reduce friction.
Applicable Vehicle Models: Commonly used in models such as the Toyota Crown, Toyota Mark X, and Lexus IS250.