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Vehicle Info NeededMSD IGNITIONPART NUMBER: 121-8428
HEI Advance Curve Kit For Street Fire Distributors
$5093$56.59You Save$5.66
Ships on Sep 03, 2026
Lowest Price GuaranteeAdvance Curve Kit
- HEI Advance Curve Kit
- For Street Fire Distributors
Designed for the Street Fire HEI and stock style HEI DistributorsKit Includes: - New advance weights
- Springs to set the rate of advance
- New bushings..Note: Will not work with MSD Pro-Billet HEI distributor 121-8365.
- Fits Street-Fire HEI
- Fits Stock Style HEI Distributors
- Not for MSD Billet and Pro-Billet Distributors
Part TypeDistributor Advance Kit
BrandMSD IGNITION
Package Height1.5
Package Width5.8
Package Length7.7
Weight0.2 PG
Part CategoryPerformance Parts
Advance Weights IncludedYes
ColorBlack
Advance Limit Bushings IncludedYes
QuantitySold as a kit
Distributor TypeHEI
Adjustable Vacuum Advance IncludedNo
Part FitmentSemi Universal
Spring Quantity6
Vendor Part Number8428
Package Qty1
Package TypeEA
No Questions
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Some parts are not legal for use in California or other states with similar laws / regulations
