Sierra 18-3879 Cylinder Head Gasket for GM 4.3L V6 Marine Engine

The Sierra 18-3879 is a premium marine-grade cylinder head gasket engineered for GM 262 CID (4.3L) V6 marine engines. This steel gasket features a 4.100-inch bore and 0.035-inch compressed thickness, providing superior sealing capabilities to enhance engine performance and longevity in harsh marine environments.

Key Features:

• Steel construction for durability and heat resistance
• 4.100-inch bore diameter for precise fitment
• 0.035-inch compressed thickness ensures proper sealing
• Designed to meet or exceed OEM specifications
• Compatible with Mercruiser, OMC, Volvo Penta, and Crusader stern drives
• Sold individually

OEM Cross-References:

• Mercruiser: 27-11986, 27-42744, 27-816460, 27-879150140
• OMC: 3854299, 910833, 912227, 914930
• Volvo Penta: 3854299, 856371, 912227, 914930
• Crusader: 33408
• GLM: 36100
• Mallory: 9-63707

Sierra manufactures premium-quality aftermarket replacements engineered to meet or exceed original equipment standards, ensuring reliable, leak-free performance for your marine engine.