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Aeroflow MLS H/G 351W 4.155"B .045" SUIT AFR HEADS COMETIC / CMC5912-045 | TrackTheory
AEROFLOW · CMC5912-045 Aeroflow · CMC5912-045 MLS H/G 351W 4.155"B .045" SUIT AFR HEADS COMETIC / CMC5912-045 Reliable combustion seal for 351W builds running AFR cylinder heads.
▸ Multi-layer steel construction handles high-compression and forced-induction applications▸ 0.045-inch compressed thickness suits most AFR head combinations▸ 4.155-inch bore size matches common 351 Windsor overbore specs▸ Cometic MLS technology resists blowout on high-cycle track engines▸ Direct fitment reference CMC5912-045 for confident ordering$215
Australian-owned. Stocking circuit racing parts, track-day essentials, and performance upgrades.
MLS H/G 351W 4.155"B .045" SUIT AFR HE… $215.38
Add to cart Dispatched in 1-2 business days · 30-day returns
Home Shop Garage Account incl. GST · ships AU-wide
“The bite is sharp from the first stop. Compounds where they should be when the rotors come up to temperature.”
Specifications
On the spec sheet. Spec sheet coming — contact support for full spec details. Fitment
Will this fit? Fitment data still being indexed for this product. Ask BuildBot for a fit-check against your vehicle.
Why this part
A composite gasket on a built 351W is a liability waiting to surface. Multi-layer steel seals conform to minor surface irregularities without sacrificing clamping integrity under repeated heat cycles. For an engine that sees track use, the cost difference between this and a cheaper alternative is trivial against the labour of pulling heads a second time.
Pairs well with
Other parts in this build. © 2026 TrackTheory · ABN 33 689 462 504 Built in Adelaide · Shipping AU-wide
