Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededMARCH PERFORMANCEPART NUMBER: 655-P2556-05
P2556-05 Ultra Series Alternator, 140 Amp, 12v Single Wire, Polished Finish, GM 10SI,, 6.6 in. Center to Center
$14995
Ships on 09/15/2026
Lowest Price GuaranteeGM
Ultra Series Alternator140 Amp 12v Single Wire Polished Finish GM 10SI 6 & 12 o'clock Mount 6.6 in. Center to Center
March Performance P2556-05 Features:
- 140 Amps
- 12V Single Wire Connection
- Polished Finish
- Center to Center 6.6"
- Driver Side 6 and 12 o'clock mount
- Mounting Type: Bolt On
- Finish: Polished
- Fan Type: External
- External Fan Included: No
- One Wire Capable: Yes
- Pulley Included: No
- Case Color: Polished
- Amperage: 140
- Voltage: 12
High Output and Polished Style
March Performance Ultra Series Alternators are engineered to provide superior electrical output for modern and high-demand applications while maintaining a sleek, polished appearance. Built from premium materials with precision manufacturing, these alternators ensure reliable performance, reduced weight, and long-lasting durability. Perfect for street rods, muscle cars, and custom projects, March Performance Ultra Series Alternators deliver consistent power with show-quality style under the hood.
Part TypeAlternator
Product LineMarch Performance Ultra Series Alternators
BrandMARCH PERFORMANCE
Package Height7.0
Package Width8.0
Package Length9.0
Weight13.0 PG
Part CategoryPerformance Parts
Case ColorPolished
Pulley IncludedNo
Voltage12
Amperage140
One Wire CapableYes
Fan TypeExternal
Part FitmentSemi Universal
Mounting TypeBolt On
FinishPolished
External Fan IncludedNo
Vendor Part NumberP2556-05
Package Qty1
Package TypeEA
No Questions
No Reviews
Some parts are not legal for use in California or other states with similar laws / regulations
