
Serious builds looking for maximum performance
Fits 5.7L and 6.4L HEMI with MDS (automatic trans only).
Comp Cams
MPN: MK201-303-17 · SKU: MDS-PLUGS
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Horsepower
Skill Level
Install Time
Build Stage
View on Car
See replacement target on car →Transmission
Estimated Install Cost
Total with part: $2,139.95–$2,639.95
What You'll Need
Required when replacing MDS lifters on automatic trans HEMIs.
Serious builds looking for maximum performance
Fits 5.7L and 6.4L HEMI with MDS (automatic trans only).
ConflictECU Tuner / Programmer — Cam swap without a tune will idle wrong and may damage the engine.
Strongly RecommendedVVT Limiter / Cam Phaser Lock — Variable Valve Timing must be limited or locked when running an aftermarket cam, otherwise idle quality and timing become unstable.
When you replace the factory MDS lifters with non-MDS lifters, the oil passages that fed the MDS solenoids are left open. These passages MUST be sealed or you'll lose oil pressure — the oil that should be lubricating your bearings and cam will be dumping out through open passages instead. These simple aluminum plugs press into the lifter valley to seal those passages. It's a $30 part that prevents thousands in engine damage. Four plugs are needed per engine (one for each MDS solenoid bank). Automatic transmission HEMIs only — manual trans models don't have MDS.
MDS Delete Plug Kit changes 2 primary stock components (highlighted red). Included or supporting pieces are listed below.
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The build planner counts these as covered so you don't double-pay for parts this upgrade already addresses.
Camshaft
Replaces stock
Valve Springs
Included in kit
Valve Lifters (Non-MDS)
Included in kit
MDS Delete Plugs
Replaces stock
Pushrods
Included in kit
ECU Tune
Required support — not included
Specifications
3 attributes| Installation | Advanced mechanical skills required, visit to body shop recommended.1 |
| Power Increase | Adds a max of 82 horsepower.1 |
| Retuning | Retuning recommended.1 |
Sources: 1AmericanMuscle
Compare prices across 1 retailer — every link opens the real product page
Verified fitment includes 2022 Dodge Challenger. The full compatibility list is shown in the Compatible Vehicles section above; if your specific year/trim is not listed, double-check with the retailer before purchase.
Based on product data
This is rated as an easy bolt-on install (Part of cam install). Most owners complete it in a driveway with hand tools.
Based on product data
On a stock vehicle this typically adds about 82 HP at the crank, measured against a baseline pull. Real-world numbers vary by altitude, fuel quality, and supporting mods.
Based on product data
Key callouts from the retailer install notes: • Requires custom tuning. • Disabling of the MDS and phaser limiter or lock required.
Based on product data
Plan on having or sourcing: Required when replacing MDS lifters on automatic trans HEMIs.. The build planner on this site flags missing supporting parts when you add this kit to a build.
Based on product data
VVT & MDS Delete buyer's guide
How to pick vvt & mds delete for your Challenger — what matters, what doesn't, and what to avoid.
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