Remanufactured GM Chevrolet 3.5L 3.9L Pair Cylinder Heads OHV W/ Head Gasket Set and Bolts

Remanufactured GM Chevrolet 3.5L 3.9L (Casting 523) OHV Cylinder Heads Pair w/ Gaskets & Bolts

Professional OEM Replacement Kit with Complete Installation Hardware

Restore your engine’s performance and reliability with this premium pair of remanufactured GM 3.5L and 3.9L V6 OHV cylinder heads. This comprehensive kit features “523” casting heads that have been precision-machined to meet or exceed OEM specifications, ensuring a perfect fit and long-term durability. Each set includes a high-quality head gasket set and a complete bolt kit for a streamlined, professional-grade installation.

🛠️ In-House Machining Process

• Cleaning: Fully disassembled and thermally cleaned.
• Soda Blasted: Castings are blasted with Sodium Bicarbonate. Because baking soda is water-soluble, there is zero risk of abrasive media clogging oil passages.
• Pressure Testing: Tested to 60 PSI to ensure no cracks or porosity leaks.
• Surfacing: All heads are resurfaced on our Rottler S85A for a precision gasket-sealing surface.
• Valve Job: Multi-angle valve job performed; every port is Vacuum Tested to ensure valves are seated 100% airtight.

📊 Technical Specifications

• Engine Size: 3.5L / 3.9L V6
• Casting Number: 523
• Engine Type: OHV (Overhead Valve)
• Condition: Remanufactured
• Included Components: Pair of Cylinder Heads (Left and Right), Head Gasket Set, and Cylinder Head Bolts
• Core Return Required

🚛 Fitment Data

Common Applications:

• Saturn Aura: 2007–2008 Saturn Aura (3.5L)
• Pontiac G6: 2006–2010 Pontiac G6 (3.9L)
• Chevrolet Impala: 2006 Chevrolet Impala (3.5L)
• Chevrolet Impala: 2006–2011 Chevrolet Impala (3.9L)
• Chevrolet Impala: 2007–2010 Chevrolet Impala (3.5L, VIN K 8th digit)
• Chevrolet Impala: 2007–2010 Chevrolet Impala (3.5L, VIN N 8th digit, Front)
• Chevrolet Impala: 2011 Chevrolet Impala (3.5L, VIN K 8th digit)
• Buick Lucerne: 2009–2011 Buick Lucerne (3.9L)
• Chevrolet Malibu: 2006–2010 Chevrolet Malibu (3.5L, VIN K 8th digit, Opt LZE)
• Buick Montana: 2006–2009 Buick Montana (SV6, 3.9L)
• Chevrolet Monte Carlo: 2006–2007 Chevrolet Monte Carlo (3.5L)
• Chevrolet Monte Carlo: 2006–2007 Chevrolet Monte Carlo (3.9L)
• Buick Relay: 2006–2007 Buick Relay (3.9L)
• Chevrolet Terrazza: 2006–2007 Chevrolet Terrazza (3.9L)
• Chevrolet Uplander: 2006–2009 Chevrolet Uplander (3.9L)
• Saturn Vue: 2008–2010 Saturn Vue (3.5L)