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Vehicle Info NeededPROFORMPART NUMBER: 778-66437
Lightning-Bolt 100 Amp Mini-Alternator w/10SI Mount
$26795
4 left in stock
Ships on Sep 08, 2026
Lowest Price GuaranteeMini-Alternator w/10SI Mount
Lightning-Bolt 100 Amp Mini-Alternator w/10SI MountOver 80 Amps at Idle to Over 100 at Top End 1-Wire 12 Volt Hook-Up Internal Regulator 98 mm Stator 100 Amp Internal Fan 2 3/4 in. V-Belt Pulley Lightweight Only 7 lbs. Aluminum
Proform 66437 Lightning-Bolt 100 Amp Mini-Alternator Features:
- Included billet aluminum adapter kit for direct mounting to a standard 10SI mount
- 40 Percent lighter than a full-size 10SI alternator
- Mounts configured the same as 93 mm mini alternators
- Lightning-Bolt unique aluminum housing
- Ideal for Street or Strip
Proform 66437 Lightning-Bolt 100 Amp Mini-Alternator Note:
- V-belt style pulley can be changed to serpentine
Over a 100 Amps Output from a Mini, Lightweight Alternator
Proform Lightning-Bolt 100 Amp Mini Alternators are 40 percent lighter than other 10SI alternators, making them ideal for racing with the Amps needed for the street.
Part TypeAlternator
Product LineProform Lightning-Bolt 100 Amp Mini Alternators
BrandPROFORM
Package Height6.5
Package Width7.0
Package Length8.25
Weight8.64 PG
One-Wire CapableYes
Pulley IncludedYes
Pulley Belt TypeV-Belt
Amperage Rating100 amps
Voltage12 v
QuantitySold individually
Fan TypeInternal
Mounting Type10SI
Regulator TypeInternal
FinishNatural
Vendor Part Number66437
Package Qty1
Package TypeEA
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