JE Pro Seal Chevrolet Small Block 400 4.2in 0.039in Headgasket (ref C5249-040)

SKU: JEPGM1004-039

Head Gaskets

JE Pro Seal Head Gaskets...

JE Pro Seal Chevrolet Small Block 400 4.2in 0.039in Headgasket (ref C5249-040)

JE Pistons

JE Pro Seal Chevrolet Small Block 400 4.2in 0.039in Headgasket (ref C5249-040)

SKU: JEPGM1004-039

Head Gaskets

JE Pro Seal Head Gaskets...

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

JE Pistons MLS head gaskets have a unique rubber-like coating and multi layers of steel (MLS). They ensure that engine gasses can only escape via the exhaust ports, while preventing coolant and oil from leaking into the cylinders and combustion chambers. The outer layers have raised and sunken designs built into the stainless steel to provide a seal in key areas, and the inner layers act like a spring to expand and contract under high-pressure applications. MLS head gaskets are designed to maintain their seal in extreme conditions, for a stabilized gasket with less distortion and an improved combustion seal around the cylinder bores. For replacement or upgrade, order the model recommended for your specific vehicle and engine application.

Part Type

Head Gaskets

Data: v4.2 - Upd: 2026-10-13 21:37:09

Specifications

Product Attributes - Brand: JE Pistons
Product Attributes - Manufacturer's Part Number: GM1004-039
Product Attributes - Part Type: Head Gaskets
Product Attributes - Product Line: JE Pistons MLS Head Gaskets
Product Attributes - UPC: 193564240149
Product Attributes - Bore (in.): 4.200 in.
Product Attributes - Bore (mm): 106.680mm
Product Attributes - Gasket Material: Multi-layer steel
Product Attributes - Compressed Thickness (in.): 0.039 in.
Product Attributes - Compressed Volume (cc): 8.854cc
Product Attributes - Lock Wire: No
Product Attributes - Quantity: Sold individually.

Reference Information

Brand Name/s	JE Pistons
StreetFX SKU	jepGM1004-039
SFX Item ID	4361126
Supplier Item Code	4361126
Manufacturer SKU	GM1004-039
Manufacturer UPC	193564240149
Alternative References	4.2in, 0.039in, C5249-040)