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Aeroflow 351W IRON DISTRIBUTOR GEAR 0.531 SHAFT ALT.MA29421 MSD - 85852 | TrackTheory
AEROFLOW · MSD85852 Aeroflow · MSD85852 351W IRON DISTRIBUTOR GEAR 0.531 SHAFT ALT.MA29421 MSD - 85852 Correct iron gear for 351W distributors — protects your cam from day one.
▸ Cast iron construction matched to factory iron camshafts▸ Machined for 0.531-inch shaft diameter, direct MSD fitment▸ Drop-in replacement for MA29421 with no modification required▸ Prevents accelerated wear from mismatched gear materials▸ Suits flat-tappet hydraulic cam setups in stock or mild builds$91
Australian-owned. Stocking circuit racing parts, track-day essentials, and performance upgrades.
351W IRON DISTRIBUTOR GEAR 0.531 SHAFT… $90.75
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
Running a steel gear against an iron cam is a known wear accelerator — the wrong choice costs you a camshaft. The Aeroflow 85852 uses cast iron that matches factory cam hardness, so contact wear stays predictable and manageable. For 351W Falcons, Fairlanes, and Mustangs on a hydraulic flat-tappet setup, this is the gear the engine was designed around.
Pairs well with
Other parts in this build. © 2026 TrackTheory · ABN 33 689 482 504 Built in Adelaide · Shipping AU-wide
