GM has offered several series of alternators over the years, each time taking a step up in performance. The great thing about these alternators and aftermarket brackets is that for the most part they are interchangeable. Starting with the externally regulated 10dn alternator of the 1960s and moving all the way to the CS130D alternator of late, aftermarket brackets with rod end tensioners will interchange. The 2" mounting foot width is common to all of them and the 6.61" bolt spacing is common (except the CS130D has 7.24" bolt spacing, which many brackets accommodate). Race Prepped Alternators feature a balanced rotor for high rpm applications.
GM 12si-Style Alternator
- Chrome
- 150 Amp
- 1v Belt Pulley
- Includes: Baffle & Cone
- Ultimate Custom Billet Look At Affordable Prices
- Smooth Die Cast Housing w/Teardrop Design
- Smooth Back w/Special Powermaster Vents
- Gold Battery Post
- Proof Of Performance Tags
- Note: Charge Wire Not Included.
Specifications:
GM 12si-Style Alternator
- Chrome
- 150 Amp
- 1v Belt Pulley
- Includes: Baffle & Cone
- Ultimate Custom Billet Look At Affordable Prices
- Smooth Die Cast Housing w/Teardrop Design
- Smooth Back w/Special Powermaster Vents
- Gold Battery Post
- Proof Of Performance Tags
- Note: Charge Wire Not Included.
Specifications:
| Advertised Amperage Output | 150 amps |
| Alternator Brackets Included | No |
| Alternator Case Style | GM 12si |
| Alternator Finish | Chrome plated |
| Amperage | 140 AMP |
| Belt Included | NO |
| Mounting | OEM |
| One-Wire Capable | Yes |
| Package Depth | 7.10 |
| Package Height | 9.30 |
| Package Width | 7.70 |
| Part Category | Performance Parts |
| Pulley Included | Yes |
| Pulley Style | V-Belt Pulley |
| Quantity | Sold individually |
| Regulator Included | Yes |
| Regulator Style | Internal |
| Shipping Weight | 13.99 |
| Vendor Part Number | 37294 |
| Voltage Compatibility | 12 |