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1987 GMC R1500 Suburban V8 5.0L 12si High Output Alternator
1987 GMC R1500 Suburban V8 5.0L 12si High Output Alternator
1987 GMC R1500 Suburban V8 5.0L 12si High Output Alternator
Upgrade your 1987 GMC R1500 Suburban V8 5.0L 12si with a high-output alternator from JS Alternators. This direct-fit alternator drops into your stock alternator location with no modifications required.
Key Features
- Direct Fit — Drops into your factory alternator location
- Smaller Pulley Included — Spins faster for maximum output
- High-Output Performance — Built for car audio, marine, racing, and high-demand electrical systems
Fitment
- 1987 GMC R1500 Suburban V8 5.0L 12si
- Direct replacement — bolts into the stock alternator location
Notes
- A smaller pulley is included — install a 1/2" to 1" shorter belt for proper fit
- If you require a specific voltage setpoint, purchase a compatible voltage regulator separately
- A Big 3 Wiring Upgrade Kit is required when installing any high-output alternator — 1/0 gauge 100% copper wire is recommended
Pro Tip: Pair this alternator with a Big 3 Wiring Upgrade Kit to ensure your electrical system can handle the increased output safely and efficiently.