This handy little adapter harness allows you to plug an oval 4 pin late model GM alternator in to a Rectangular CS130 or CS144 vehicle harness. This harness is required in order to install certain high output alternators on GM trucks that originally came...

This voltage boost harness fits 1996-2004 GM Trucks and SUV's with oval GM alternator plug. The longer Yellow wire gets connected to an ignition switched 12V+ source to turn the alternator on and off with ignition. This harness can be used with stock...

This voltage boost harness fits alternators with a GM 4 pin plug and is similar to our "plug and play" H104-L harness. The P101-L is the simplified version of the H104-L which makes it great for secondary alternator setups for a cleaner look or engine...

Installation Notes: This unit comes equipped with a smaller 1.75 inch diameter alternator pulley, and will require a slightly shorter drive belt for proper belt tension.  Not recommended for sustained use above 5,000 RPM engine speed. The Elite...

The S series of 6 phase alternators offers incredible low RPM output in a compact and durable package. Highly efficient, these units use less horsepower than conventional 3 phase alternators. 12 diodes, twin rectifier plates and outstanding airflow...

S Series The S series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower than conventional 3 phase alternators. 12 diodes, twin rectifier plates and outstanding airflow...

Ford/Vette 6 rib pulley. black hard anodized aluminum

4 Rib 2.9" Billet aluminum racing pulley - Hard anodized

S Series The S series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower per Kw of power produced than conventional 3 phase alternators. 12 diodes, twin rectifier plates...

S Series The S series of 6 phase alternators offers incredible output in a compact and durable package. Highly efficient, these units use less horsepower than conventional 3 phase alternators. 12 diodes, twin rectifier plates and outstanding airflow...

This MechMan Marine certified high output 170 amp 6 phase alternator is a great upgrade for boats using the popular "GM LS Truck" bolt pattern alternator. This style alternator was used by many boat manufacturers from the late 1990's through 2018. (check...