Spartan MLS Head Gasket SBC 4.035 x .039

The SCE Gaskets Spartan MLS Head Gasket SBC 4.035 x .039 is a multi-layer steel cylinder head gasket engineered for Small Block Chevy engines requiring precise bore sizing and compression thickness control. This gasket delivers the seal integrity demanded by high-performance and street applications where combustion chamber compression and gasket durability directly impact engine reliability and power output.

The 4.035-inch bore diameter matches the cylinder wall specifications of many Small Block Chevy platforms, while the 0.039-inch compression thickness is engineered to maintain the target compression ratio and sealed cylinder volume. Multi-layer steel construction provides superior gasket durability across thermal cycling, pressure spikes, and sustained combustion temperatures compared to single-layer designs. The MLS design accommodates modern honing finishes and resists blow-out conditions that compromise softer gasket materials. Each gasket is manufactured to tight tolerances to ensure consistent sealing across all eight cylinders without compromise to any bore.

This gasket is specified for Small Block Chevy engines undergoing complete cylinder head rebuilds, engine reassembly after machine work, or replacement during upper-end maintenance. Correct bore sizing and compression thickness are critical to prevent gasket failure, oil or coolant seepage, and combustion leakage that degrades performance. The Spartan series from SCE Gaskets is recognized for consistent quality and long-term sealing performance in both naturally aspirated and boosted Small Block applications.