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Piston Assembly — Buick LaCrosse (LY7 / LLT) — 6-Cylinder 3.6L — STD — 12616971 / 12616972
Piston Assembly — Buick LaCrosse (LY7 / LLT) — 6-Cylinder 3.6L — STD — 12616971 / 12616972
Piston Assembly — Buick LaCrosse (LY7 / LLT) — 6-Cylinder 3.6L — STD — 12616971 / 12616972
Piston Assembly — Buick LaCrosse (LY7 / LLT) — 6-Cylinder 3.6L — STD — 12616971 / 12616972
Piston Assembly — Buick LaCrosse (LY7 / LLT) — 6-Cylinder 3.6L — STD — 12616971 / 12616972
  1. Piston Assembly — Buick LaCrosse (LY7 / LLT) — 6-Cylinder 3.6L — STD — 12616971 / 12616972
  2. Piston Assembly — Buick LaCrosse (LY7 / LLT) — 6-Cylinder 3.6L — STD — 12616971 / 12616972
  3. Piston Assembly — Buick LaCrosse (LY7 / LLT) — 6-Cylinder 3.6L — STD — 12616971 / 12616972
  4. Piston Assembly — Buick LaCrosse (LY7 / LLT) — 6-Cylinder 3.6L — STD — 12616971 / 12616972
  5. Piston Assembly — Buick LaCrosse (LY7 / LLT) — 6-Cylinder 3.6L — STD — 12616971 / 12616972

3.6L STD Pistons & Ring Kit for Chevrolet Traverse Buick Enclave OEM12616972 new

The standard piston assembly for the Buick LaCrosse 3.6L (LY7/LLT) features a cast aluminum construction with a bore diameter of 94.00 mm; the piston skirt is coated with a polymer finish, and the assembly is equipped with a full-floating piston pin. The piston ring configuration typically consists of a 1.20 mm top ring groove, a 1.50 mm second ring groove, and a 2.50 mm oil ring groove—a design specifically engineered for General Motors (GM) high-performance V6 engines with a compression ratio of 11.3:1.

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Description

Key Specifications (Standard Dimensions):
Engine Code: LY7 (2005–2008), LLT (2009–2010); 3.6L V6
Bore: 94.00 mm (Standard)
Material: ZL109 Cast Aluminum Alloy
Skirt Coating: Anti-friction Polymer Coating
Piston Pin: Full-Floating Type
Piston Ring Dimensions: Top Ring (1.2 mm), Second Ring (1.5 mm), Oil Ring (2.5 mm)
Compression Height: ≈ 32 mm
Overall Length: ≈ 55 mm

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