Sale

Gaskets and Seals Engine Gaskets and Seals

Cometic Gasket

Cometic GM LB7/LLY/LBZ/LMM/LGH/LML Duramax .053in MLX Cylinder 4.130in Bore RHS Head Gasket

$216.98 $195.29 Save $21.69

SKU: C006 C15375-053

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

Part #: C15375-053

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 LB7/LLY/LBZ/LMM/LGH/LML Duramax .053in. MLX Cylinder Head Gasket | 4.130in. Bore | RHS

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 Cometic C15375-053 MLX Head Gasket is a direct replacement for damaged or worn gaskets. The MLX gasket features an outer layer of high-temperature polymer with embossments for a micro seal, and is proudly made in the USA from American materials.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCometic Gasket
Part NumberC006 C15375-053

Videos

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.

View Full Return Policy