Supercharger & Boost for the Dodge Hellcat
Upgraded pulleys, snouts, ported blowers, and cooling to make more boost and more power on the Hellcat's supercharged 6.2 HEMI.
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Boost on a Hellcat comes down to how fast the blower spins relative to the crank, which is why the upper pulley is the headline part. It is also why a pulley bought on its own is the most common way to make a Hellcat slower, hotter, and less reliable — the pulley is one item on a list that has to be bought together.
Find supercharger & boost on eBay Motors
Used, OEM, and hard-to-find supercharger & boost for the Hellcat — live listings, prices set by the seller.
New Amazon parts for this category are added daily. In the meantime, browse live listings on eBay Motors above.
How to choose supercharger & boost for a Hellcat
Buy the package, not the pulley
A smaller upper pulley raises boost, which raises cylinder pressure, fuel demand, and charge temperature at the same time. The tune, the fuelling, and the cooling have to move with it. Ordering the pulley first and working out the rest later is the sequence that damages engines.
Match the part to the variant
The standard Hellcat and the Redeye do not share blower hardware — the Redeye runs the larger supercharger with its own pulley and snout parts. "Fits Hellcat" is not enough on this shelf; the listing has to name your variant.
Belt slip caps the whole exercise
Spin the blower harder and the belt has to hold more load. Owners chasing boost without addressing tension and belt wrap end up with a car that makes its best number on paper and slips on the road.
Cooling is part of the boost budget
More boost means more heat in the charge air, and heat is what the calibration pulls timing to protect against. A heat exchanger and a healthy intercooler loop are how a bigger pulley keeps making its power on the third run instead of only the first.
Fitment checkpoints
- Pulleys, snouts, and blower internals are variant-specific (standard Hellcat vs. Redeye) rather than body-specific — a Challenger and Charger of the same variant take the same parts.
- Upper (blower) and lower (crank) pulleys are different decisions with different consequences. Be certain which one a listing is selling.
- Pulley swaps often need the correct install and removal tooling. Factor it in rather than discovering it mid-job.
- Ported blowers, snouts, and used factory units are an eBay Motors market — this is one of the categories where the used listings genuinely beat the new shelf.
Supercharger & Boost reading on Hellcat Parts
Pulley & tune guide
What a smaller pulley actually does, and the order to do things in.
Supercharger & bolt-on upgrades
The supporting parts that let a boost increase stick.
Cooling & heat-soak
Heat exchangers, chiller tanks, and the loop most owners forget exists.
E85 & flex-fuel conversion
The fuelling side of a boost increase.