March Performance Ultra Series GM 10SI Alternator, 140 Amp 1 Wire Polished Finish

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SKU: MAR-P2556-05

GM 1-Wire Alternator, 140 Amps, Polished

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Pricing: $169.95

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Description

March Ultra Series GM 10SI Alternator — 140 Amp, 1-Wire, Polished

Part No.

MAR-P2556-05

Finish

Clear

Family

Alternator

A polished GM 10SI-case alternator rated at 140 amps with a simple one-wire hookup — no external regulator, no harness to build. Ultra-low cut-in voltage regulation keeps the output coming at idle, which is where a big-cam Pontiac with an electric fan and an ignition box actually needs it. Neoprene-sealed bearings and high copper and steel content in the rotor and stator are what carry the output without cooking the unit.

Specifications

140 amp output
1-wire hookup
6 and 12 o'clock mounting positions
6.6" center-to-center mounting
Neoprene-sealed bearings
Polished finish

Application

Universal GM 10SI applications

Before you order

Pulley and fan are not included unless supplied as part of a March pulley or serpentine kit.

Finish — March CLEAR

March's signature finish — a clear powder coat over machine-finished billet aluminum. High shine, no polishing required.

Availability: In stock, no wait

Why Buy It From Butler

Butler Performance builds Pontiac engines every day, and we sell the accessory drives we actually run on them. If you are not certain which balancer, timing cover or water pump is on your engine — or which chassis version of a kit your car takes — call us before you order. It is a five-minute phone call that saves a return.

866-762-7527

Butler Tech Library

Upgrading Your Pontiac Ignition

Distributors, coils, multi-spark boxes, and wiring — what modern ignition actually improves over the original, and what you need to make the swap.

Read the Ignition Guide ›

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