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Cometic Gasket
Cometic GM 4.2L Vortec 4.200in Bore .040in MLS Head Gasket
SKU: C006 C15374-040
Moderate — 2–4 hours
Description
Part #: C15374-040
COMETIC MLX (Multi-Layer Stopper) gaskets utilize an integrated stopper layer for combustion chamber sealing and improved clamp load around the cylinder without increasing bore distortion. MLX technology can be found in some head gaskets and are made from the same materials as our MLS Head Gaskets. No sealants or re-torque required.
GM LL8 Atlas .040" MLX Cylinder Head Gasket, 3.710" Bore.
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
The company emphasizes customer satisfaction and continually improves its operations based on feedback. This gasket is constructed with MLX (Multi-Layer Stopper) technology, which includes an integrated stopper layer for enhanced combustion chamber sealing and improved clamp load without increasing bore distortion.
Fitment
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Specifications
| Brand | Cometic Gasket |
| Part Number | C006 C15374-040 |
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Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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