Wiseco K694M9558AP Nissan VR38DETT Forged Piston 95.58mm Bore -7cc Dome 1.210 in. Compression Height

The Wiseco K694M9558AP is a Professional Series forged performance piston engineered for the Nissan VR38DETT engine platform. Featuring a 95.58 mm (+0.08 mm oversize) bore, a -7 cc dome crown design, a 1.210 in. compression height, and a 0.9055 in. (23.0 mm) wrist pin diameter, this piston is precision-built to handle the demands of high-output forced-induction builds. This listing is for a single piston.

Key Features:

• 2618 High-Strength Aluminum Alloy — Forged from 2618 alloy for superior tensile strength and thermal fatigue resistance under extreme boost and high-RPM conditions
• ArmorGlide® Skirt Coating — Proprietary coating provides seizure resistance, reduces friction, and enables quieter piston operation
• -7 cc Dome Crown — Optimized crown geometry with specially designed valve pockets for improved airflow and precise compression ratio tuning
• 1.210 in. Compression Height — Engineered for compatibility with stroker and custom rod/stroke combinations
• Precision Ring Grooves — Machined to exacting tolerances for consistent ring seal and minimal blow-by
• HD Forging — Heavy-duty forging process for a lighter piston with superior strength compared to cast alternatives
• Engineered, Forged & Machined in the USA — Manufactured at Wiseco's facility in Mentor, Ohio

Wiseco Professional Series pistons are designed for heavy-to-severe duty race builds where reliability and performance cannot be compromised. The K694M9558AP is sold individually and is intended for use in custom engine builds where exact specifications are matched to connecting rod length, stroke, and compression targets.

Specifications:

• Bore Diameter: 95.58 mm (3.763 in.) / +0.08 mm oversize
• Compression Height: 1.210 in. (30.73 mm)
• Wrist Pin Diameter: 0.9055 in. (23.0 mm)
• Dome Volume: -7 cc (dome)
• Material: 2618 Aluminum Alloy
• Quantity: 1 Piston